2008ApJ...683L..29K


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST18:19:36

2008ApJ...683L..29K - Astrophys. J., 683, L29-L32 (2008/August-2)

SN 2007ax: an extremely faint type Ia supernova.

KASLIWAL M.M., OFEK E.O., GAL-YAM A., RAU A., BROWN P.J., CENKO S.B., CAMERON P.B., QUIMBY R., KULKARNI S.R., BILDSTEN L., MILNE P. and BRYNGELSON G.

Abstract (from CDS):

We present multiband photometric and optical spectroscopic observations of SN 2007ax, the faintest and reddest Type Ia supernova (SN Ia) yet observed. With MB=-15.9 and (B-V)max=1.2, this SN is over half a magnitude fainter at maximum light than any other SN Ia. Similar to subluminous SN 2005ke, SN 2007ax also appears to show excess in UV emission at late time. Traditionally, Δm15(B) has been used to parameterize the decline rate for SNe Ia. However, the B-band transition from fast to slow decline occurs sooner than 15 days for faint SNe Ia. Therefore we suggest that a more physically motivated parameter, the time of intersection of the two slopes, be used instead. Only by explaining the faintest (and the brightest) supernovae can we thoroughly understand the physics of thermonuclear explosions. We suggest that future surveys should carefully design their cadence, depth, pointings, and follow-up to find an unbiased sample of extremely faint members of this subclass of faint SNe Ia.

Abstract Copyright:

Journal keyword(s): supernovae: individual (SN 2007ax) - Stars: Supernovae: Individual: Alphanumeric: SN 1991bg - Stars: Supernovae: Individual: Alphanumeric: SN 1999by - supernovae: individual (SN 2005ke) - Stars: Supernovae: General - Ultraviolet: Stars

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 252 GiG 00 48 01.484 +27 37 25.76   13.4 12.49     ~ 76 0
2 SN 1998de SN* 00 48 06.88 +27 37 28.5   17.56       SNIapec 79 1
3 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2009 1
4 NGC 1367 GiG 03 35 01.351 -24 55 59.19   11.48   9.98 11.1 ~ 175 0
5 SN 2005ke SN* 03 35 04.35 -24 56 38.8     17.2     SNIap 126 1
6 SN 2007ax SN* 08 22 43.26 +22 33 16.9     17.2     SNIap 50 1
7 NGC 2577 GiP 08 22 43.4499824492 +22 33 11.140845735   13.8       ~ 106 0
8 SN 2005am SN* 09 16 12.47 -16 18 16.0     17.5     SNIa 99 1
9 SN 1999by SN* 09 21 52.07 +51 00 06.6   13.66       SNIap 264 1
10 NGC 2841 LIN 09 22 02.655 +50 58 35.32 10.43 10.09 9.22     ~ 1009 1
11 NGC 4070 LIN 12 04 11.2987693782 +20 24 35.360329298   14.3       ~ 70 0
12 SN 2005bl SN* 12 04 12.24 +20 24 24.6           SNIap 89 1
13 SN 1991bg SN* 12 25 03.70 +12 52 15.6   14.75 14.3     SNIapec 541 1
14 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1672 2
15 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6036 0
16 NAME LOCAL SUPERCL SCG 12 31 +12.4           ~ 468 0
17 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4351 2

    Equat.    Gal    SGal    Ecl

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2021.05.16-18:19:36

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