THE YOUNG AND BRIGHT TYPE IA SUPERNOVA ASASSN-14lp: DISCOVERY, EARLY-TIME OBSERVATIONS, FIRST-LIGHT TIME, DISTANCE TO NGC 4666, AND PROGENITOR CONSTRAINTS
AuthorShappee, B. J.
Piro, A. L.
Holoien, T. W.-S.
Prieto, J. L.
Burns, C. R.
Kochanek, C. S.
Stanek, K. Z.
Beacom, J. F.
Danilet, A. B.
Hsiao, E. Y.
Szczygieł, D. M.
Thompson, T. A.
Wagner, M. R.
Woźniak, P. R.
AffiliationUniv Arizona, Large Binocular Telescope Observ
Keywordsgalaxies: distances and redshifts
supernovae: individual (ASASSN-141p, Type Ia, NGC 4666, ASASSN-141p)
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationTHE YOUNG AND BRIGHT TYPE IA SUPERNOVA ASASSN-14lp: DISCOVERY, EARLY-TIME OBSERVATIONS, FIRST-LIGHT TIME, DISTANCE TO NGC 4666, AND PROGENITOR CONSTRAINTS 2016, 826 (2):144 The Astrophysical Journal
JournalThe Astrophysical Journal
Rights© 2016. The American Astronomical Society. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractOn 2014 December 9.61, the All-sky Automated Survey for SuperNovae (ASAS-SN or "Assassin") discovered ASASSN-141p just similar to 2 days after first light using a global array of 14 cm diameter telescopes. ASASSN-141p went on to become a bright supernova (V = 11.94 mag), second only to SN 2014J for the year. We present prediscovery photometry (with a detection less than a day after first light) and ultraviolet through near-infrared photometric and spectroscopic data covering the rise and fall of ASASSN-141p for more than 100 days. We find that ASASSN-141p had a broad light curve (Delta m(15) (B) = 0.80 +/- 0.05), a B-band maximum at 2457015.82 +/- 0.03, a rise time of 16.941(-0.10)(+0.11) days, and moderate host-galaxy extinction (E (B - V)host = 0.33 +/- 0.06). Using ASASSN-141p, we derive a distance modulus for NGC 4666 of mu = 30.8 +/- 0.2, corresponding to a distance of 14.7 +/- 1.5 Mpc. However, adding ASASSN-141p to the calibrating sample of Type Ia supernovae still requires an independent distance to the host galaxy. Finally, using our early-time photometric and spectroscopic observations, we rule out red giant secondaries and, assuming a favorable viewing angle and explosion time, any nondegenerate companion larger than 0.34 RG(circle dot).
VersionFinal published version
SponsorsNSF [AST-0908816, AST-1515876, AST-1515927, PHY-1404311, AST-0306969, AST-0607438, AST-1008343, AST-9987045]; CCAPP at the Ohio State University; Mt. Cuba Astronomical Foundation; Millennium Institute of Astrophysics (MAS) of the Millennium Science Initiative, Chilean Ministry of Economy [IC120009]; NASA through Hubble Fellowship - Space Telescope Science Institute [HF-51348.001]; Research in Astronomy, Inc., for NASA [NAS 5-26555]; DOE Computational Science Graduate Fellowship [DE-FG02-97ER25308]; FONDECYT ; Ministry of Economy, Development, and Tourism's Millennium Science Initiative [IC120009]; Strategic Priority Research Program-The Emergence of Cosmological Structures" of the Chinese Academy of Sciences [XDB09000000]; Danish Agency for Science and Technology and Innovation realized through a Sapere Aude Level 2 grant; Laboratory Directed Research and Development program at LANL; Smithsonian Astrophysical Observatory; UK Science and Technology Facilities Council; NSF Telescope System Instrumentation Program (TSIP); Ohio Board of Regents; Ohio State University Office of Research; Alfred P. Sloan Foundation; Participating Institutions; National Science Foundation; U.S. Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England; Robert Martin Ayers Sciences Fund