Journal
ASTRONOMY & ASTROPHYSICS
Volume 561, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201322889
Keywords
supernovae: general; supernovae: individual: SN 2008ha; supernovae: individual: SN 2010ae
Categories
Funding
- Danish Agency for Science and Technology and Innovation
- Instrument Center for Danish Astrophysics (IDA)
- World Premier International Research Center Initiative, MEXT, Japan
- Swedish Research Council [623-2011-7117]
- PRIN-INAF
- Proyecto FONDECYT [11090421]
- Millennium Center for Supernova Science [P10-064-F]
- Programa Iniciativa Cientifica Milenio del Ministerio de Economia, Fomento y Turismo de Chile
- NSF [AST-0306969, AST-0607438, AST-1008343]
- National Aeronautics and Space Administration
- Office of Science of the US Department of Energy [DE-AC02-05CH11231]
- Direct For Mathematical & Physical Scien [1008962, 1008343] Funding Source: National Science Foundation
- Division Of Astronomical Sciences [1211782] Funding Source: National Science Foundation
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A comprehensive set of optical and near-infrared (NIR) photometry and spectroscopy is presented for the faint and fast 2008ha-like supernova (SN) 2010ae. Contingent on the adopted value of host extinction, SN 2010ae reached a peak brightness of -13.8 > M-V > -15.3 mag, while modeling of the UVOIR light curve suggests it produced 0.003-0.007 M-circle dot of Ni-56, ejected 0.30-0.60 M-circle dot of material, and had an explosion energy of 0.04-0.30 x 10(51) erg. The values of these explosion parameters are similar to the peculiar SN 2008ha -for which we also present previously unpublished early phase optical and NIR light curves - and places these two transients at the faint end of the 2002cx-like SN population. Detailed inspection of the post-maximum NIR spectroscopic sequence indicates the presence of a multitude of spectral features, which are identified through SYNAPPS modeling to be mainly attributed to Co II. Comparison with a collection of published and unpublished NIR spectra of other 2002cx-like SNe, reveals that a Co II footprint is ubiquitous to this subclass of transients, providing a link to Type Ia SNe. A visual-wavelength spectrum of SN 2010ae obtained at +252 days past maximum shows a striking resemblance to a similar epoch spectrum of SN 2002cx. However, subtle differences in the strength and ratio of calcium emission features, as well as diversity among similar epoch spectra of other 2002cx-like SNe indicates a range of physical conditions of the ejecta, highlighting the heterogeneous nature of this peculiar class of transients.
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