Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31451
Title: | The Most Rapidly Declining Type I Supernova 2019bkc/ATLAS19dqr | Authors: | Chen, Ping Dong, Subo Stritzinger, M. D. Holmbo, Simon Strader, Jay Kochanek, C. S. Peng, Eric W. BENETTI, Stefano Bersier, D. Brownsberger, Sasha Buckley, David A. H. Gromadzki, Mariusz Moran, Shane PASTORELLO, Andrea Aydi, Elias Bose, Subhash Connor, Thomas Boutsia, K. Di Mille, F. ELIAS DE LA ROSA, NANCY DEL CARMEN French, K. Decker Holoien, Thomas W. -S. Mattila, Seppo Shappee, B. J. Stark, Antony A. Swihart, Samuel J. |
Issue Date: | 2020 | Journal: | THE ASTROPHYSICAL JOURNAL LETTERS | Number: | 889 | Issue: | 1 | First Page: | L6 | Abstract: | We report observations of the hydrogen-deficient supernova (SN) 2019bkc/ATLAS19dqr. With B- and r-band decline between peak and 10 days post peak of ${\rm{\Delta }}{m}_{10}(B)=5.24\pm 0.07$ mag and ${\rm{\Delta }}{m}_{10}(r)=3.85\pm 0.10$ mag, respectively, SN 2019bkc is the most rapidly declining SN I discovered so far. While its closest matches are the rapidly declining SN 2005ek and SN 2010X, the light curves and spectra of SN 2019bkc show some unprecedented characteristics. SN 2019bkc appears "hostless," with no identifiable host galaxy near its location, although it may be associated with the galaxy cluster MKW1 at z = 0.02. We evaluate a number of existing models of fast-evolving SNe, and we find that none of them can satisfactorily explain all aspects of SN 2019bkc observations. | URI: | http://hdl.handle.net/20.500.12386/31451 | URL: | https://iopscience.iop.org/article/10.3847/2041-8213/ab62a4 https://arxiv.org/pdf/1905.02205.pdf |
ISSN: | 2041-8205 | DOI: | 10.3847/2041-8213/ab62a4 | Bibcode ADS: | 2020ApJ...889L...6C | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Chen_2020_ApJL_889_L6_postprint.pdf | postprint | 7.11 MB | Adobe PDF | View/Open |
Chen_2020_ApJL_889_L6_editorial.pdf | [Administrators only] | 4.73 MB | Adobe PDF |
Page view(s)
37
checked on Apr 24, 2024
Download(s)
16
checked on Apr 24, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.