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2014A&A...561A.146S - Astronomy and Astrophysics, volume 561A, 146-146 (2014/1-1)

Optical and near-IR observations of the faint and fast 2008ha-like supernova 2010ae.

STRITZINGER M.D., HSIAO E., VALENTI S., TADDIA F., RIVERA-THORSEN T.J., LELOUDAS G., MAEDA K., PASTORELLO A., PHILLIPS M.M., PIGNATA G., BARON E., BURNS C.R., CONTRERAS C., FOLATELLI G., HAMUY M., HOEFLICH P., MORRELL N., PRIETO J.L., BENETTI S., CAMPILLAY A., HAISLIP J.B., LACLUTZE A.P., MOORE J.P. and REICHART D.E.

Abstract (from CDS):

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 > MV > -15.3 mag, while modeling of the UVOIR light curve suggests it produced 0.003-0.007 M of 56Ni, ejected 0.30-0.60 M of material, and had an explosion energy of 0.04-0.30x1051 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 The values of these explosion parameters are similar to the peculiar SN 2008ha -for which we also present previously unpublished early phase optical and NIR light curves - and places these two transients at the faint end of the 2002cx-like SN population.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 CoII. Comparison with a collection of published and unpublished NIR spectra of other 2002cx-like SNe, reveals that a CoII footprint is ubiquitous to this subclass of transients, providing a link to Type Ia SNe.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.

Abstract Copyright:

Journal keyword(s): supernovae: general - supernovae: individual: SN 2008ha - supernovae: individual: SN 2010ae

VizieR on-line data: <Available at CDS (J/A+A/561/A146): list.dat sp/*>

Nomenclature: Table 1: [SHV2014] SN 2010ae NN (Nos 1-39). Table A.1: [SHV2014] SN 2008ha NN (Nos 1-37).

Simbad objects: 28

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2020.02.24-10:22:51

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