2011A&A...534L..15C


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.18CET18:46:14

2011A&A...534L..15C - Astronomy and Astrophysics, volume 534, L15-15 (2011/10-1)

A study of the color diversity around maximum light in type Ia supernovae.

CARTIER R., FORSTER F., COPPI P., HAMUY M., MAEDA K., PIGNATA G. and FOLATELLI G.

Abstract (from CDS):

From a sample of 12 well-observed TypeIa supernovae, we find clear evidence of correlations between early phase (U-B), (V-R), and (V-I) colors and the velocity shifts of the [FeII] λ7155 and [NiII] λ7378 nebular lines measured from late-phase spectra. As these lines are thought to trace the ashes of the initial deflagration process, our findings provide additional support to the new paradigm of off-center explosions in TypeIa supernovae, and we interpret these correlations as viewing angle effects in the observed colors. We also show that the nebular velocity shifts are related to the strength and width of the CaII H&K and IR-triplet lines near-maximum light. The evidence presented here implies that the viewing angle must be taken into account when deriving extinction values and distances in future cosmological studies based on TypeIa supernovae.

Abstract Copyright:

Journal keyword(s): distance scale - supernovae: general

Simbad objects: 7

goto Full paper

goto View the reference in ADS

Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SN 2002bo SN* 10 18 06.51 +21 49 41.7   13.95       SN.Ia 265 1
2 SN 1994D SN* 12 34 02.395 +07 42 05.70   11.75 12.03     SNIa 519 1
3 SN 2002dj SN* 13 13 00.34 -19 31 08.7     17.0     SN.Ia 94 1
4 SN 2003du SN* 14 34 35.80 +59 20 03.8   13.46       SN.Ia 308 1
5 SN 2005cf SN* 15 21 33.12 -07 26 57.1   13.54       SN.Ia 228 1
6 SN 2002er SN* 17 11 29.88 +07 59 44.8   14.25       SNIa 115 1
7 SN 2004eo SN* 20 32 54.19 +09 55 42.7   15.07 17.8     SN.Ia 160 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2011A&A...534L..15C and select 'bookmark this link' or equivalent in the popup menu


2019.11.18-18:46:14

© Université de Strasbourg/CNRS

    • Contact