检索结果-内蒙古大学图书馆

Carbon 2020年 156卷 576-576页

作者： V.M. Gubarev V.Y. Yakovlev M.G. Sertsu O.F. Yakushev V.M. Krivtsun Yu G. Gladush I.A. Ostanin A. Sokolov F. Schäfers V.V. Medvedev A.G. Nasibulin Moscow Institute of Physics and Technology (State University) Institutskiy pereulok str. 9 Dolgoprudny Moscow Region 141701 Russia Skolkovo Institute of Science and Technology Nobel str. 3 Moscow 121205 Russia Helmholtz Zentrum Berlin (BESSY-II) Albert-Einstein-Strasse 15 D-12489 Berlin Germany P. N. Lebedev Physical Institute of the Russian Academy of Science Moscow Russia Institute for Spectroscopy of the Russian Academy of Science Moscow Troitsk Russia Faculty of Physics Higher School of Economics Old Basmannya 21/4 Moscow Russia Center for Computational and Data-Intensive Science and Engineering Skolkovo Institute of Science and Technology Moscow Russia Multi-Scale Mechanics (MSM) Faculty of Engineering Technology MESA+ University of Twente Enschede the Netherlands Department of Applied Physics Aalto University 15100 FI-00076 Aalto Finland

New ASKAP Radio Supernova Remnants and Candidates in the Large Magellanic Cloud

学校读者我要写书评

暂无评论

arXiv 2022年

作者： Bozzetto, Luke M. Filipović, Miroslav D. Sano, H. Alsaberi, R.Z.E. Barnes, L.A. Bojičić, I.S. Brose, R. Chomiuk, L. Crawford, Evan J. Dai, S. Ghavam, M. Haberl, F. Hill, T. Hopkins, A.M. Ingallinera, A. Jarrett, T. Kavanagh, P.J. Koribalski, B.S. Kothes, R. Leahy, D. Lenc, E. Leonidaki, I. Maggi, P. Maitra, C. Matthew, C. Payne, J.L. Pennock, C.M. Points, S. Reid, W. Riggi, S. Rowell, G. Sasaki, M. Safi-Harb, S. van Loon, J.Th. Tothill, N.F.H. Urošević, D. Zangrandi, F. Western Sydney University Locked Bag 1797 DC South PenrithNSW2751 Australia Faculty of Engineering Gifu University 1-1 Yanagido Gifu501-1193 Japan Dublin Institute for Advanced Studies Astronomy & Astrophysics Section 31 Fitzwilliam Place D02 XF86 Dublin 2 Ireland Center for Data Intensive and Time Domain Astronomy Department of Physics and Astronomy Michigan State University East LansingMI48824 United States Max-Planck-Institut für extraterrestrische Physik Gießenbachstraße 1 GarchingD-85748 Germany Australian Astronomical Optics AAO-Macquarie Faculty of Science and Engineering Macquarie University 105 Delhi Rd North RydeNSW2113 Australia INAF – Osservatorio Astrofisico di Catania via Santa Sofia 78 CataniaI-95123 Italy Department of Astronomy University of Cape Town Rondebosch7701 South Africa School of Cosmic Physics Dublin Institute for Advanced Studies 31 Fitzwilliam Place Dublin 2 Ireland ATNF CSIRO Space & Astronomy PO Box 76 EppingNSW1710 Australia Dominion Radio Astrophysical Observatory Herzberg Astronomy and Astrophysics National Research Council Canada PO Box 248 PentictonBCV2A 6J9 Canada Department of Physics and Astronomy University of Calgary University of Calgary CalgaryABT2N 1N4 Canada Department of Physics University of Crete HeraklionGR-70013 Greece Institute of Astrophysics FORTH HeraklionGR-71110 Greece Observatoire Astronomique de Strasbourg Université de Strasbourg CNRS 11 rue de l’Université StrasbourgF-67000 France Lennard-Jones Laboratories Keele University StaffordshireST5 5BG United Kingdom Cerro Tololo Inter-American Observatory NSF’s NOIRLab Casilla 603 La Serena Chile Observatory Hill Waitoki 130 Dormer Rd Helensville RD2 Auckland0875 New Zealand School of Mathematical and Physical Sciences Macquarie University SydneyNSW2109 Australia School of Physical Sciences The University of Adelaide Adelaide5005 Australia Dr. Karl Remeis Observatory Erlangen Centre for Astroparticle Physics

We present a new Australian Square Kilometre Array Pathfinder (ASKAP) sample of 14 radio Supernova Remnant (SNR) candidates in the Large Magellanic Cloud (LMC). This new sample is a significant increase to the known number of older, larger and low surface brightness LMC SNRs. We employ a multi-frequency search for each object and found possible traces of optical and occasionally X-ray emission in several of these 14 SNR candidates. One of these 14 SNR candidates (MCSNR J0522–6543) has multi-frequency properties that strongly indicate a bona fide SNR. We also investigate a sample of 20 previously suggested LMC SNR candidates and confirm the SNR nature of MCSNR J0506–6815. We detect lower surface brightness SNR candidates which were likely formed by a combination of shock waves and strong stellar winds from massive progenitors (and possibly surrounding OB stars). Some of our new SNR candidates are also found in a lower density environments in which SNe type Ia explode inside a previously excavated interstellar medium (ISM). Copyright © 2022, The Authors. All rights reserved.

关键词： Shock waves

The TESS-Keck Survey XXI: 13 New Planets and Homogeneous Properties for 21 Subgiant Systems

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Chontos, Ashley Huber, Daniel Grunblatt, Samuel K. Saunders, Nicholas Winn, Joshua N. McCormack, Mason Knudstrup, Emil Albrecht, Simon H. Crossfield, Ian J.M. Rodriguez, Joseph E. Ciardi, David R. Collins, Karen A. Jenkins, Jon M. Bieryla, Allyson Batalha, Natalie M. Beard, Corey Dai, Fei Dalba, Paul A. Fetherolf, Tara Giacalone, Steven Hill, Michelle L. Howard, Andrew W. Isaacson, Howard Kane, Stephen R. Lubin, Jack Macdougall, Mason G. Močnik, Teo Akana Murphy, Joseph M. Petigura, Erik A. Pidhorodetska, Daria Polanski, Alex S. Robertson, Paul Rubenzahl, Ryan A. Turtelboom, Emma V. Weiss, Lauren M. van Zandt, Judah Ricker, George R. Vanderspek, Roland Latham, David W. Seager, Sara Quinn, Samuel N. Shporer, Avi Eisner, Nora L. Goeke, Robert F. Levine, Alan M. Ting, Eric B. Howell, Steve Schlieder, Joshua E. Benni, Paul Boyle, Andrew W. Gan, Tianjun Girardin, Eric Gonzalez, Erica Gregorio, Joao Horne, Keith Livingston, John Lund, Michael B. Mann, Christopher R. Massey, Bob Matthews, Elisabeth C. McLeod, Kim K. Palle, Enric Popowicz, Adam Relles, Howard M. Schwarz, Richard P. Sefako, Ramotholo Srdoc, Gregor Tan, Thiam-Guan Wang, Gavin Ziegler, Carl Institute for Astronomy University of Hawai'i 2680 Woodlawn Drive HonoluluHI96822 United States Department of Astrophysical Sciences Princeton University 4 Ivy Lane PrincetonNJ08544 United States School of Physics University of Sydney NSW2006 Australia Department of Physics and Astronomy Johns Hopkins University 3400 N Charles St BaltimoreMD21218 United States Department of Astronomy & Astrophysics University of Chicago ChicagoIL60637 United States Department of Space Earth and Environment Chalmers University of Technology Gothenburg412 93 Sweden Stellar Astrophysics Centre Department of Physics and Astronomy Aarhus University Ny Munkegade 120 Aarhus CDK-8000 Denmark Department of Physics & Astronomy University of Kansas 1251 Wescoe Hall Dr. 1082 Malott LawrenceKS66045 United States Center for Data Intensive and Time Domain Astronomy Department of Physics and Astronomy Michigan State University East LansingMI48824 United States Caltech/IPAC-NASA Exoplanet Science Institute 770 S. Wilson Avenue PasadenaCA91106 United States Center for Astrophysics Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United States NASA Ames Research Center Moffett FieldCA94035 United States Department of Astronomy and Astrophysics University of California Santa CruzCA95060 United States Department of Physics & Astronomy University of California Irvine IrvineCA92697 United States Division of Geological and Planetary Sciences 1200 E California Blvd PasadenaCA91125 United States Department of Astronomy California Institute of Technology PasadenaCA91125 United States Department of Astronomy and Astrophysics University of California Santa CruzCA95064 United States Department of Physics California State University San MarcosCA92096 United States Department of Earth and Planetary Sciences University of California RiversideCA92521 United States Department of Astronomy University of California Berkeley BerkeleyCA94720 United States

We present a dedicated transit and radial velocity survey of planets orbiting subgiant stars observed by the TESS Mission. Using ∼16 nights on Keck/HIRES, we confirm and characterize 12 new transiting planets - TOI-329 b, HD 39688 b (TOI-480), TOI-603 b, TOI-1199 b, TOI-1294 b, TOI-1439 b, TOI-1605 b, TOI-1828 b, HD 148193 b (TOI-1836), TOI-1885 b, HD 83342 b (TOI-1898), TOI-2019 b - and provide updated properties for 9 previously confirmed TESS subgiant systems (TOI-197, TOI-954, TOI-1181, TOI-1296, TOI-1298, TOI-1601, TOI-1736, TOI-1842, TOI-2145). We also report the discovery of an outer, non-transiting planet, TOI-1294 (Equation presented) and three additional stars with long-term RV trends. We find that at least 19±8% of subgiants in our sample of 21 stars have outer companions, comparable to main-sequence stars. We perform a homogeneous analysis of the stars and planets in the sample, with median uncertainties of 3%, 8% and 15% for planet radii, masses and ages, doubling the number of known planets orbiting subgiant stars with bulk densities measured to better than 10%. We observe a dearth of giant planets around evolved stars with short orbital periods, consistent with tidal dissipation theories that predict the rapid inspiral of planets as their host stars leave the main sequence. We note the possible evidence for two distinct classes of hot Jupiter populations, indicating multiple formation channels to explain the observed distributions around evolved stars. Finally, continued RV monitoring of planets in this sample will provide a more comprehensive understanding of demographics for evolved planetary systems. © 2024, CC BY.

关键词： Planets

The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets∗

学校读者我要写书评

暂无评论

arXiv 2022年

作者： Yee, Samuel W. Winn, Joshua N. Hartman, Joel D. Bouma, Luke G. Zhou, George Quinn, Samuel N. Latham, David W. Bieryla, Allyson Rodriguez, Joseph E. Collins, Karen A. Alfaro, Owen Barkaoui, Khalid Beard, Corey Belinski, Alexander A. Benkhaldoun, Zouhair Benni, Paul Bernacki, Krzysztof Boyle, Andrew W. Butler, R. Paul Caldwell, Douglas A. Chontos, Ashley Christiansen, Jessie L. Ciardi, David R. Collins, Kevin I. Conti, Dennis M. Crane, Jeffrey D. Daylan, Tansu Dressing, Courtney D. Eastman, Jason D. Essack, Zahra Evans, Phil Everett, Mark E. Fajardo-Acosta, Sergio Forés-Toribio, Raquel Furlan, Elise Ghachoui, Mourad Gillon, Michaël Hellier, Coel Helm, Ian Howard, Andrew W. Howell, Steve B. Isaacson, Howard Jehin, Emmanuel Jenkins, Jon M. Jensen, Eric L.N. Kielkopf, John F. Laloum, Didier Leonhardes-Barboza, Naunet Lewin, Pablo Logsdon, Sarah E. Lubin, Jack Lund, Michael B. MacDougall, Mason G. Mann, Andrew W. Maslennikova, Natalia A. Massey, Bob McLeod, Kim K. Muñoz, Jose A. Newman, Patrick Orlov, Valeri Plavchan, Peter Popowicz, Adam Pozuelos, Francisco J. Pritchard, Tyler A. Radford, Don J. Reefe, Michael Ricker, George R. Rudat, Alexander Safonov, Boris S. Schwarz, Richard P. Schweiker, Heidi Scott, Nicholas J. Seager, S. Shectman, Stephen A. Stockdale, Chris Tan, Thiam-Guan Teske, Johanna K. Thomas, Neil B. Timmermans, Mathilde Vanderspek, Roland Vermilion, David Watanabe, David Weiss, Lauren M. West, Richard G. Van Zandt, Judah Zejmo, Michal Ziegler, Carl Department of Astrophysical Sciences Princeton University 4 Ivy Lane PrincetonNJ08544 United States Department of Astronomy California Institute of Technology PasadenaCA91125 United States University of Southern Queensland Centre for Astrophysics West Street ToowoombaQLD4350 Australia Center for Astrophysics Harvard & Smithsonian 60 Garden St CambridgeMA02138 United States Center for Data Intensive and Time Domain Astronomy Department of Physics and Astronomy Michigan State University East LansingMI48824 United States George Mason University 4400 University Drive FairfaxVA22030 United States Astrobiology Research Unit Université de Liège 19C Allée du 6 Août Liège4000 Belgium Department of Earth Atmospheric and Planetary Sciences Massachusetts Institute of Technology CambridgeMA02139 United States Tenerife La LagunaE-38205 Spain Department of Physics & Astronomy University of California Irvine IrvineCA92697 United States Sternberg Astronomical Institute M.V. Lomonosov Moscow State University 13 Universitetskij pr. Moscow119234 Russia Oukaimeden Observatory High Energy Physics and Astrophysics Laboratory Faculty of sciences Semlalia Cadi Ayyad University Marrakech Morocco ActonMA United States Silesian University of Technology Department of Electronics Electrical Engineering and Microelectronics Akademicka 16 Gliwice44-100 Poland Earth and Planets Laboratory Carnegie Institution for Science 5241 Broad Branch Road NW WashingtonDC20015 United States SETI Institute United States NASA Ames Research Center Moffett Field CA94035 United States Institute for Astronomy University of Hawai’i HonoluluHI96822 United States Caltech/IPAC-NASA Exoplanet Science Institute 770 S. Wilson Avenue PasadenaCA91106 United States American Association of Variable Star Observers 49 Bay State Road CambridgeMA02138 United States Observatories of the Carnegie Institution for Science 813 Santa Barbara Street PasadenaCA91101 United States

NASA’s Transiting Exoplanet Survey Satellite (TESS) mission promises to improve our understanding of hot Jupiters by providing an all-sky, magnitude-limited sample of transiting hot Jupiters suitable for population studies. Assembling such a sample requires confirming hundreds of planet candidates with additional follow-up observations. Here, we present twenty hot Jupiters that were detected using TESS data and confirmed to be planets through photometric, spectroscopic, and imaging observations coordinated by the TESS Follow-up Observing Program (TFOP). These twenty planets have orbital periods shorter than 7 days and orbit relatively bright FGK stars (10.9 ◦). We also investigated the possibility that TOI-1937 is a member of the NGC 2516 open cluster, but ultimately found the evidence for cluster membership to be ambiguous. These objects are part of a larger effort to build a complete sample of hot Jupiters to be used for future demographic and detailed characterization work. © 2022, CC BY.

关键词： Planets

APOGEE-centric Ananke Simulations in a SciServer SQL database

学校读者我要写书评

暂无评论

Research Notes of the AAS 2022年第6期6卷 125-125页

作者： Rachael L. Beaton Suzanne Werner Arik W. Mitschang Gerard Lemson Aniruddha Thakar Anne-Marie Weijmans Joel R. Brownstein Farnik Nikakhtar Robyn E. Sanderson Andrew Wetzel Sarah Loebman Sanjib Sharma Space Telescope Science Institute 3700 San Martin Drive Baltimore MD 21218 USA rbeaton@princeton.edu Department of Astrophysical Sciences Princeton University 4 Ivy Lane Princeton NJ 08544 USA The Observatories of the Carnegie Institution for Science 813 Santa Barbara St. Pasadena CA 91101 USA Institute For Data Intensive Engineering and Science Johns Hopkins University. 3701 San Martin Drive Baltimore MD 21218 USA Center for Astrophysical Sciences Department of Physics and Astronomy Johns Hopkins University 3400 North Charles Street Baltimore MD 21218 USA School of Physics and Astronomy University of St Andrews North Haugh St Andrews KY16 9SS UK Department of Physics and Astronomy University of Utah 115 S. 1400 E. Salt Lake City UT 84112 USA Department of Physics & Astronomy University of Pennsylvania 209 S 33rd St. Philadelphia PA 19104 USA Center for Computational Astrophysics Flatiron Institute 162 5th Ave New York NY 10010 USA Department of Physics & Astronomy University of California Davis CA 95616 USA Department of Physics University of California Merced 5200 North Lake Rd. Merced CA 95343 USA Sydney Institute for Astronomy School of Physics A28 The University of Sydney NSW 2006 Australia Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D) Australia

Modern galaxy simulations have reached the complexity required to create sophisticated mock catalogs. Ananke is a set of nine mock catalogs constructed from synthetic surveys of three Milky Way-like galaxies from the Latte suite of FIRE simulations. Ananke provides observed quantities for comparison with modern large-scale stellar surveys. In SDSS-IV DR17, mock catalogs for the Apache Point Galactic Evolution Experiment (APOGEE) were built from Ananke synthetic surveys as a Value-Added Catalog, but were only provided as large flat files (∼>10's GB). Here we announce an >40 Tb SQL database for nine APOGEE-specific mock catalogs and describe additions to the data model necessary for effective user queries. The catalogs can be accessed on the free, science platform, SciServer—supported by the institute for data intensive engineering and science at the Johns Hopkins University (IDIES); SciServer supports server-side analysis with commonly used coding languages and tools.

关键词： Catalogs Milky Way Galaxy Surveys Redshift surveys Astronomy databases

First-passage and first-hitting times of Lévy flights and Lévy walks

学校读者我要写书评

暂无评论

arXiv 2019年

作者： Palyulin, Vladimir V. Blackburn, George Lomholt, Michael A. Watkins, Nicholas W. Metzler, Ralf Klages, Rainer Chechkin, Aleksei V. Centre for Computational and Data-Intensive Science and Engineering Skolkovo Institute of Science and Technology Nobelya Ulitsa 3 Moscow121205 Russia Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 DresdenD-01187 Germany £ Centre for Fusion Space and Astrophysics University of Warwick Coventry United Kingdom MEMPHYS - Centre for Biomembrane Physics Department of Physics Chemistry and Pharmacy University of Southern Denmark Odense M5230 Denmark Institute for Physics & Astronomy University of Potsdam Potsdam-GolmD-14476 Germany Centre for the Analysis of Time Series London School of Economics and Political Sciences London United Kingdom Faculty of Science Technology Engineering and Mathematics Open University Milton Keynes United Kingdom Institut für Theoretische Physik Technische Universität Berlin Hardenbergstraße 36 Berlin10623 Germany Queen Mary University of London School of Mathematical Sciences Mile End Road LondonE1 4NS United Kingdom Akhiezer Institute for Theoretical Physics National Science Centre "Kharkov Institute of Physics and Technology" Kharkov61108 Ukraine

For both Lévy flight and Lévy walk search processes we analyse the full distribution of first-passage and first-hitting (or first-arrival) times. These are, respectively, the times when the particle moves across a point at some given distance from its initial position for the first time, or when it lands at a given point for the first time. For Lévy motions with their propensity for long relocation events and thus the possibility to jump across a given point in space without actually hitting it ("leapovers"), these two definitions lead to significantly different results. We study the first-passage and first-hitting time distributions as functions of the Lévy stable index, highlighting the different behaviour for the cases when the first absolute moment of the jump length distribution is finite or infinite. In particular we examine the limits of short and long times. Our results will find their application in the mathematical modelling of random search processes as well as computer algorithms. Copyright © 2019, The Authors. All rights reserved.

关键词：

The Early Light Curve of SN 2023bee: Constraining Type Ia Supernova Progenitors the Apian Way

学校读者我要写书评

暂无评论

arXiv 2023年

作者： Hosseinzadeh, Griffin Sand, David J. Sarbadhicary, Sumit K. Ryder, Stuart D. Jha, Saurabh W. Dong, Yize Bostroem, K. Azalee Andrews, Jennifer E. Hoang, Emily Janzen, Daryl Jencson, Jacob E. Lundquist, Michael Meza Retamal, Nicolas E. Pearson, Jeniveve Shrestha, Manisha Valenti, Stefano Wyatt, Samuel Farah, Joseph Howell, D. Andrew McCully, Curtis Newsome, Megan Gonzalez, Estefania Padilla Pellegrino, Craig Terreran, Giacomo Alzaabi, Muzoun Green, Elizabeth M. Gurney, Jessica L. Milne, Peter A. Ridenhour, Kaycee I. Smith, Nathan Robles, Paulina Soto Kwok, Lindsey A. Schwab, Michaela Gromadzki, Mariusz Buckley, David A.H. Itagaki, Koichi Hiramatsu, Daichi Chomiuk, Laura Lundqvist, Peter Haislip, Joshua Kouprianov, Vladimir Reichart, Daniel E. Steward Observatory University of Arizona 933 North Cherry Avenue TucsonAZ85721-0065 United States Center for Cosmology and AstroParticle Physics Ohio State University 191 West Woodruff Avenue ColumbusOH43210-1117 United States School of Mathematical and Physical Sciences Macquarie University SydneyNSW2109 Australia Astrophysics and Space Technologies Research Centre Macquarie University SydneyNSW2109 Australia Department of Physics and Astronomy Rutgers The State University of New Jersey 136 Frelinghuysen Road PiscatawayNJ08854-8019 United States Department of Physics and Astronomy University of California Davis 1 Shields Avenue DavisCA95616-5270 United States Gemini Observatory 670 North A‘ohoku Place HiloHI96720-2700 United States Department of Physics & Engineering Physics University of Saskatchewan 116 Science Place SaskatoonSKS7N 5E2 Canada W. M. Keck Observatory 65-1120 Māmalahoa Highway KamuelaHI96743-8431 United States Department of Astronomy University of Washington 3910 15th Avenue NE SeattleWA98195-0002 United States Las Cumbres Observatory 6740 Cortona Drive Suite 102 GoletaCA93117-5575 United States Department of Physics University of California Santa BarbaraCA93106-9530 United States Astronomical Observatory University of Warsaw Al. Ujazdowskie 4 Warszawa00-478 Poland South African Astronomical Observatory P.O. Box 9 Observatory7935 South Africa Department of Physics University of the Free State P.O. Box 339 Bloemfontein9300 South Africa Department of Astronomy University of Cape Town Private Bag X3 Rondebosch7701 South Africa Itagaki Astronomical Observatory Yamagata990-2492 Japan Center for Astrophysics Harvard & Smithsonian 60 Garden Street CambridgeMA02138-1516 United States The NSF AI Institute for Artificial Intelligence and Fundamental Interactions United States Center for Data Intensive and Time Domain Astronomy Department of Physics and Astronomy Michigan State University East LansingMI48

We present very early photometric and spectroscopic observations of the Type Ia supernova (SN Ia) 2023bee, starting about 8 hr after the explosion, which reveal a strong excess in the optical and nearest UV (U and UVW1) bands during the first several days of explosion. This data set allows us to probe the nature of the binary companion of the exploding white dwarf and the conditions leading to its ignition. We find a good match to the Kasen model in which a main-sequence companion star stings the ejecta with a shock as they buzz past. Models of double detonations, shells of radioactive nickel near the surface, interaction with circumstellar material, and pulsational delayed detonations do not provide good matches to our light curves. We also observe signatures of unburned material, in the form of carbon absorption, in our earliest spectra. Our radio nondetections place a limit on the mass-loss rate from the putative companion that rules out a red giant but allows a main-sequence star. We discuss our results in the context of other similar SNe Ia in the literature. Copyright © 2023, The Authors. All rights reserved.

关键词： Detonation

Author Correction: Natural Erosion of Sandstone as Shape Optimisation

学校读者我要写书评

暂无评论

Scientific reports 2018年第1期8卷 6232页

作者： Igor Ostanin Alexander Safonov Ivan Oseledets Center for Computational and Data-Intensive Science and Engineering Skolkovo Institute of Science and Technology Moscow Russia. i.ostanin@skoltech.ru. Center for Design Manufacturing and Materials Skolkovo Institute of Science and Technology Moscow Russia. Center for Computational and Data-Intensive Science and Engineering Skolkovo Institute of Science and Technology Moscow Russia.

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.

关键词：

Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq

学校读者我要写书评

暂无评论

arXiv 2023年

作者： Pearson, Jeniveve Sand, David J. Lundqvist, Peter Galbany, Lluís Andrews, Jennifer E. Bostroem, K. Azalee Dong, Yize Hoang, Emily Hosseinzadeh, Griffin Janzen, Daryl Jencson, Jacob E. Lundquist, Michael J. Mehta, Darshana Retamal, Nicolás Meza Shrestha, Manisha Valenti, Stefano Wyatt, Samuel Anderson, Joseph P. Ashall, Chris Auchettl, Katie Baron, Eddie Blondin, Stéphane Burns, Christopher R. Cai, Yongzhi Chen, Ting-Wan Chomiuk, Laura Coulter, David A. Cross, Dane Davis, Kyle W. de Jaeger, Thomas DerKacy, James M. Desai, Dhvanil D. Dimitriadis, Georgios Do, Aaron Farah, Joseph R. Foley, Ryan J. Gromadzki, Mariusz Gutiérrez, Claudia P. Haislip, Joshua González Hernández, Jonay I. Hinkle, Jason T. Hoogendam, Willem B. Howell, D. Andrew Hoeflich, Peter Hsiao, Eric Huber, Mark E. Jha, Saurabh W. Palau, Cristina Jiménez Kilpatrick, Charles D. Kouprianov, Vladimir Kumar, Sahana Kwok, Lindsey A. Larison, Conor LeBaron, Natalie Le Saux, Xavier Lu, Jing McCully, Curtis Evans, Tycho Mera Milne, Peter Modjaz, Maryam Morrell, Nidia Müller-Bravo, Tomás E. Newsome, Megan Nicholl, Matt Gonzalez, Estefania Padilla Payne, Anna V. Pellegrino, Craig Phan, Kim Pineda-García, Jonathan Piro, Anthony L. Piscarreta, Lara Polin, Abigail Reichart, Daniel E. Rojas-Bravo, César Ryder, Stuart D. Salmaso, Irene Schwab, Michaela Shahbandeh, Melissa Shappee, Benjamin J. Siebert, Matthew R. Smith, Nathan Strader, Jay Taggart, Kirsty Terreran, Giacomo Tinyanont, Samaporn Tucker, M.A. Valerin, Giorgio Young, D.R. Steward Observatory University of Arizona 933 North Cherry Avenue TucsonAZ85721-0065 United States Oskar Klein Centre Department of Astronomy Stockholm University Albanova University Centre StockholmSE-106 91 Sweden Campus UAB Carrer de Can Magrans s/n BarcelonaE-08193 Spain Institut d’Estudis Espacials de Catalunya Gran Capità 2-4 Edifici Nexus Desp. 201 BarcelonaE-08034 Spain Gemini Observatory 670 North A‘ohoku Place HiloHI96720-2700 United States Department of Physics and Astronomy University of California Davis 1 Shields Avenue DavisCA95616-5270 United States Department of Physics & Engineering Physics University of Saskatchewan 116 Science Place SaskatoonSKS7N 5E2 Canada Department of Physics and Astronomy The Johns Hopkins University 3400 North Charles Street BaltimoreMD21218 United States W. M. Keck Observatory 65-1120 Māmalahoa Highway KamuelaHI96743-8431 United States Department of Astronomy University of Washington 3910 15th Avenue NE SeattleWA98195-0002 United States European Southern Observatory Alonso de Córdova 3107 Casilla 19 Santiago Chile Millennium Institute of Astrophysics MAS Nuncio Monsenor Sotero Sanz 100 Off. 104 Providencia Santiago Chile Department of Physics Virginia Tech 850 West Campus Drive BlacksburgVA24061 United States School of Physics The University of Melbourne ParkvilleVIC3010 Australia Department of Astronomy and Astrophysics University of California Santa CruzCA95064-1077 United States Planetary Science Institute 1700 East Fort Lowell Road Suite 106 TucsonAZ85719-2395 United States Hamburger Sternwarte Gojenbergsweg 112 Hamburg21029 Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma 440 W. Brooks NormanOK73019-2061 United States Aix-Marseille Univ CNRS CNES LAM Marseille13388 France Observatories of the Carnegie Institute for Science 813 Santa Barbara Street PasadenaCA91101-1232 United States Yunnan Observatories Chinese Academy of

We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining type Ia supernova (SN Ia) in NGC 1784 (D ≈ 31 Mpc), from Copyright © 2023, The Authors. All rights... 详细信息

关键词： Explosions

AGC 226178 and NGVS 3543: Two deceptive dwarfs towards Virgo

学校读者我要写书评

暂无评论

arXiv 2021年

作者： Jones, Michael G. Sand, David J. Bellazzini, Michele Spekkens, Kristine Cannon, John M. Mutlu-Pakdil, Burçin Karunakaran, Ananthan Beccari, Giacomo Magrini, Laura Cresci, Giovanni Inoue, John L. Fuson, Jackson Adams, Elizabeth A.K. Battaglia, Giuseppina Bennet, Paul Crnojević, Denija Caldwell, Nelson Guhathakurta, Puragra Haynes, Martha P. Muñoz, Ricardo R. Seth, Anil Strader, Jay Toloba, Elisa Zaritsky, Dennis Steward Observatory University of Arizona 933 North Cherry Avenue Rm. N204 TucsonAZ85721-0065 United States INAF Osservatorio di Astrofisica e Scienza dello Spazio di Bologna Via Gobetti 93/3 Bologna40129 Italy Department of Physics and Space Science Royal Military College of Canada P.O. Box 17000 Station Forces Kingston ONK7K 7B4 Canada Department of Physics Engineering Physics and Astronomy Queen’s University KingstonONK7L 3N6 Canada Department of Physics & Astronomy Macalester College 1600 Grand Avenue Saint PaulMN55105 United States Kavli Institute for Cosmological Physics University of Chicago ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago ChicagoIL60637 United States Glorieta de la Astronomía Granada18008 Spain European Southern Observatory Karl-Schwarzschild-Strasse 2 Garching bei MünchenD-85748 Germany INAF - Osservatorio Astrofisico di Arcetri Largo E. Fermi 5 Firenze50125 Italy ASTRON the Netherlands Institute for Radio Astronomy Oude Hoogeveesedijk 4 Dwingeloo7991 PD Netherlands Kapteyn Astronomical Institute PO Box 800 Groningen9700 AV Netherlands Instituto de Astrofísica de Canarias Vía Láctea s/n La Laguna38205 Spain Universidad de La Laguna Avda. Astrofísico Fco. Sánchez Tenerife La LagunaE-38205 Spain Space Telescope Science Institute 3700 San Martin Drive BaltimoreMD21218 United States University of Tampa 401 West Kennedy Boulevard TampaFL33606 United States Center for Astrophysics Harvard & Smithsonian 60 Garden Street CambridgeMA02138 United States UCO/Lick Observatory University of California Santa Cruz 1156 High Street Santa CruzCA95064 United States Cornell Center for Astrophysics and Planetary Science Space Sciences Building Cornell University IthacaNY14853 United States Departamento de Astronomía Universidad de Chile Camino El Observatorio 1515 Las Condes Santiago Chile Department of Physics & Astronomy University of Utah Salt Lake CityUT8

The two sources AGC 226178 and NGVS 3543, an extremely faint, clumpy, blue stellar system and a low surface brightness dwarf spheroidal, are adjacent systems in the direction of the Virgo cluster. Both have been studied in detail previously, with it being suggested that they are unrelated normal dwarf galaxies or that NGVS 3543 recently lost its gas through ram pressure stripping, and that AGC 226178 formed from this stripped gas. However, with Hubble Space Telescope Advanced Camera for Surveys imaging we demonstrate that the stellar population of NGVS 3543 is inconsistent with being at the distance of the Virgo cluster, and that it is likely a foreground object at approximately 10 Mpc. Whereas the stellar population of AGC 226178 is consistent with it being a very young (10-100 Myr) object in the Virgo cluster. Through a re-analysis of the original ALFALFA H i detection we show that AGC 226178 likely formed from gas stripped from the nearby dwarf galaxy VCC 2034, a hypothesis strengthened by the high metallicity measured with MUSE VLT observations. However, it is unclear whether ram pressure or a tidal interaction is responsible for stripping the gas. AGC 226178 is one of at least five similar objects now known towards Virgo. These objects are all young and unlikely to remain visible for over ∼500 Myr, suggesting that they are continually produced in the cluster. © 2021, CC BY.

关键词： Galaxies