SIMBAD references

2001AJ....121.3127V - Astron. J., 121, 3127-3132 (2001/June-0)

The peculiar type Ia Supernova 1999by: spectroscopy at early epochs.

VINKO J., KISS L.L., CSAK B., FURESZ G., SZABO R., THOMSON J.R. and MOCHNACKI S.W.

Abstract (from CDS):

We present medium-resolution (λ/Δλ~2500) optical spectroscopy of SN 1999by in NGC 2841 made around its light maximum. That the depth ratio of the two Si II features at 5800 and 6150 Å are R(Si II)~0.63 at maximum indicates that this SN belongs to the peculiar subluminous Type SNe Ia. Radial velocities inferred from the minimum of the 6150 Å trough reveal a steeper decline of the velocity curve than expected for normal SNe Ia, consistent with the behavior of published VRI light curves. A revised absolute magnitude of SN 1999by and distance to its host galaxy NGC 2841 are estimated based on the multicolor light-curve shape (MLCS) method, resulting in MV(max)=-18.06±0.1 mag and d=17.1±1.2 Mpc, respectively. An approximate linear dependence of the luminosity parameter Δ on R(Si II) is presented.

Abstract Copyright:

Journal keyword(s): Stars: Distances - Stars: Supernovae: General - Stars: Supernovae: Individual: Alphanumeric: SN 1999by

CDS comments: Table 2 : SN 1981R misprint for 1981B

Simbad objects: 16

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2020.10.25-09:28:32

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