BVRI photometry of supernovae

Citation
Wcg. Ho et al., BVRI photometry of supernovae, PUB AST S P, 113(789), 2001, pp. 1349-1364
Citations number
60
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN journal
0004-6280 → ACNP
Volume
113
Issue
789
Year of publication
2001
Pages
1349 - 1364
Database
ISI
SICI code
0004-6280(200111)113:789<1349:BPOS>2.0.ZU;2-2
Abstract
We present optical photometry of one Type IIn supernova (1994Y) and nine Ty pe Ia supernovae (1993Y, 1993Z, 1993ae, 1994B, 1994C, 1994M, 1994Q, 1994ae, and 1995D). SN 1993Y and SN 1993Z appear to be normal SN Ia events with si milar rates of decline, but we do not have data near maximum brightness. Th e colors of SN 1994C suggest that it suffers from significant reddening or is intrinsically red. The light curves of SN 1994Y are complicated; they sh ow a slow rise and gradual decline near maximum brightness in VRI and numer ous changes in the decline rates at later times. SN 1994Y also demonstrates color evolution similar to that of the SN IIn 1988Z, but it is slightly mo re luminous and declines more rapidly than SN 1988Z. The behavior of SN 199 4Y indicates a small ejecta mass and a gradual strengthening of the H alpha emission relative to the continuum.