The Type Ia supernova 1999aw:: A probable 1999aa-like event in a low-luminosity host galaxy

被引:77
作者
Strolger, LG
Smith, RC
Suntzeff, NB
Phillips, MM
Aldering, G
Nugent, P
Knop, R
Perlmutter, S
Schommer, RA
Ho, LC
Hamuy, M
Krisciunas, K
Germany, LM
Covarrubias, R
Candia, P
Athey, A
Blanc, G
Bonacic, A
Bowers, T
Conley, A
Dahlén, T
Freedman, W
Galaz, G
Gates, E
Goldhaber, G
Goobar, A
Groom, D
Hook, IM
Marzke, R
Mateo, M
McCarthy, P
Méndez, J
Muena, C
Persson, SE
Quimby, R
Roth, M
Ruiz-Lapuente, P
Seguel, J
Szentgyorgyi, A
von Braun, K
Wood-Vasey, WM
York, T
机构
[1] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
[2] Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, La Serena, Chile
[3] Observ Carnegie Inst Washington, Observ Las Campanas, La Serena, Chile
[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[5] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA
[6] European So Observ, Santiago 19, Chile
[7] Univ Washington, Dept Astron, Seattle, WA 98195 USA
[8] CEA, DSM, DAPNIA,Ctr Etud Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France
[9] Pontificia Univ Catolica Chile, Santiago 22, Chile
[10] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[11] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[12] Stockholm Observ, SCFAB, Dept Phys, SE-10691 Stockholm, Sweden
[13] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA
[14] Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
[15] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[16] Univ Barcelona, Dept Astron, E-08028 Barcelona, Spain
[17] Isaac Newton Grp, E-38780 Tenerife, Spain
[18] Univ Concepcion, Dept Fis, Concepcion, Chile
[19] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
关键词
supernovae : general; supernovae : individual (SN 1999aw);
D O I
10.1086/343058
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
SN 1999aw was discovered during the first campaign of the Nearby Galaxies Supernova Search project. This luminous, slow-declining [Deltam(15)(B) = 0.81 +/- 0.03] Type Ia supernova was noteworthy in at least two respects. First, it occurred in an extremely low luminosity host galaxy that was not visible in the template images nor in initial subsequent deep imaging. Second, the photometric and spectral properties of this supernova indicate that it very likely was similar to the subclass of Type Ia supernovae whose prototype is SN 1999aa. This paper presents the BVRI and J(s)HK(s) light curves of SN 1999aw ( through similar to100 days past maximum light), as well as several epochs of optical spectra. From these data, we calculate the bolometric light curve and give estimates of the luminosity at maximum light and the initial Ni-56 mass. In addition, we present deep BVI images obtained recently with the Baade 6.5 m telescope at Las Campanas Observatory that reveal the remarkably low-luminosity host galaxy.
引用
收藏
页码:2905 / 2919
页数:15
相关论文
共 62 条
[1]  
ALDERING G, 2000, AIP C P, V522
[2]  
[Anonymous], PUB ASTRON SOC PAC
[3]  
ARDEBERG A, 1973, ASTRON ASTROPHYS, V28, P295
[4]   TYPE-I SUPER-NOVAE .1. ANALYTIC SOLUTIONS FOR THE EARLY PART OF THE LIGHT-CURVE [J].
ARNETT, WD .
ASTROPHYSICAL JOURNAL, 1982, 253 (02) :785-797
[5]   JHKLM PHOTOMETRY - STANDARD SYSTEMS, PASSBANDS, AND INTRINSIC COLORS [J].
BESSELL, MS ;
BRETT, JM .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1988, 100 (631) :1134-1151
[6]   UBVRI PASSBANDS [J].
BESSELL, MS .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1990, 102 (656) :1181-1199
[8]   TYPE I SUPERNOVAE [J].
BRANCH, D ;
PATCHETT, B .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1973, 161 (01) :71-83
[9]   ON THE RELATIVE FREQUENCIES OF SPECTROSCOPICALLY NORMAL AND PECULIAR TYPE-IA SUPERNOVAE [J].
BRANCH, D ;
FISHER, A ;
NUGENT, P .
ASTRONOMICAL JOURNAL, 1993, 106 (06) :2383-2391
[10]  
CADONAU R, 1990, ASTRON ASTROPHYS SUP, V82, P145