Globular cluster calibration of the peak brightness of the Type Ia supernova 1992A and the value of H0

被引:28
作者
Della Valle, M
Kissler-Patig, M
Danziger, J
Storm, J
机构
[1] Univ Padua, Dept Astron, I-35122 Padua, Italy
[2] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA
[3] Osserv Astron Trieste, I-34131 Trieste, Italy
[4] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
[5] European So Observ, Santiago 19, Chile
关键词
supernovae : general; supernovae : individual : SN 1992A; globular clusters : general; distance scale;
D O I
10.1046/j.1365-8711.1998.01783.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have determined the absolute magnitude at maximum light of SN 1992A by using the turnover magnitude of the globular cluster luminosity function of its parent galaxy, NGC 1380, A recalibration of the peak of the turnover magnitude of the Milky Way clusters using the latest Hipparcos results has been made with an assessment of the complete random and systematic error budget. The following results emerge: a distance to NGC 1380 of 18.6 +/- 1.4 Mpc, corresponding to (m - M) = 31.35 +/- 0.16, and an absolute magnitude of SN 1992A at maximum of M(B)(max) = -18.79 +/- 0.16. Taken at face value, SN 1992A seems to be more than half a magnitude fainter than the other SNe Ia for which accurate distances exist. We discuss the implications of this result and present possible explanations. We also discuss the Phillips relationship between rate of decline and the absolute magnitude at maximum, on the basis of nine SNe Ia, the individual distances of which have been obtained with Cepheids and the globular cluster luminosity function. The new calibration of this relationship, applied to the most distant SNe of the Calan-Tololo survey, yields H(0) = 62 +/- 6 km s(-1) Mpc(-1).
引用
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页码:267 / 276
页数:10
相关论文
共 95 条
[1]   VRI PHOTOMETRY OF GLOBULAR-CLUSTERS IN VIRGO AND LEO ELLIPTICALS [J].
AJHAR, EA ;
BLAKESLEE, JP ;
TONRY, JL .
ASTRONOMICAL JOURNAL, 1994, 108 (06) :2087-2101
[2]   NOVAE IN THE ANDROMEDA NEBULA [J].
ARP, HC .
ASTRONOMICAL JOURNAL, 1956, 61 (01) :15-&
[3]   GLOBULAR-CLUSTER SYSTEMS AS DISTANCE INDICATORS - METALLICITY EFFECTS ON THE LUMINOSITY FUNCTION [J].
ASHMAN, KM ;
CONTI, A ;
ZEPF, SE .
ASTRONOMICAL JOURNAL, 1995, 110 (03) :1164-1170
[4]   The absolute photographic magnitude of supernovae. [J].
Baade, W .
ASTROPHYSICAL JOURNAL, 1938, 88 (03) :285-304
[5]  
BAADE W, 1936, PASP, V48, P237
[6]  
BAADE W, 1941, 14 C INT ASTR PAR, P177
[7]  
BARBON R, 1990, ASTRON ASTROPHYS, V237, P79
[8]  
BARBON R, 1973, ASTRON ASTROPHYS, V25, P241
[9]  
BARBON R, 1989, ASTRON ASTROPHYS SUP, V81, P421
[10]   DISTRIBUTION OF SUPERNOVAE RELATIVE TO SPIRAL ARMS AND H-II-REGIONS [J].
BARTUNOV, OS ;
TSVETKOV, DY ;
FILIMONOVA, IV .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1994, 106 (706) :1276-1284