2013ApJ...770L..35S

Query : 2013ApJ...770L..35S

2013ApJ...770L..35S - Astrophys. J., 770, L35 (2013/June-3)

Circumstellar absorption in double detonation type Ia supernovae.

SHEN K.J., GUILLOCHON J. and FOLEY R.J.

Abstract (from CDS):

Upon formation, degenerate He core white dwarfs are surrounded by a radiative H-rich layer primarily supported by ideal gas pressure. In this Letter, we examine the effect of this H-rich layer on mass transfer in He+C/O double white dwarf binaries that will eventually merge and possibly yield a Type Ia supernova (SN Ia) in the double detonation scenario. Because its thermal profile and equation of state differ from the underlying He core, the H-rich layer is transferred stably onto the C/O white dwarf prior to the He core's tidal disruption. We find that this material is ejected from the binary system and sweeps up the surrounding interstellar medium hundreds to thousands of years before the SN Ia. The close match between the resulting circumstellar medium profiles and values inferred from recent observations of circumstellar absorption in SNe Ia gives further credence to the resurgent double detonation scenario.

Abstract Copyright: ∼

Journal keyword(s): binaries: close - novae, cataclysmic variables - nuclear reactions, nucleosynthesis, abundances - supernovae: general - white dwarfs

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 2007le SN* 23 38 48.45 -06 31 21.7     15.2     SNIa 139 1

Query : 2013ApJ...770L..35S

Basic data :
SN 2007le -- SuperNova
Other object types: otypes_help 		SN* (2012MNRAS,SN)
ICRS coord. (ep=J2000) : 		23 38 48.45 -06 31 21.7 (Optical) [ ] C 2015ApJS..220....9F
FK4 coord. (ep=B1950 eq=1950) : 		23 36 13.92 -06 47 59.2 [ ]
Gal coord. (ep=J2000) : 		079.70298 -63.12481 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 1883 [~] / z(spectroscopic) 0.0063 [~] / cz 1889 [~]
   (Opt) D 2012MNRAS.425.1789S
Spectral type: 		SNIa C 2015ApJS..220....9F
Fluxes (1) :
V 15.2 [~] D 2008yCat.2283....0B
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SN 2007le

References (139 between 1850 and 2026) (Total 139)
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