2005A&A...441..641D


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST14:07:09

2005A&A...441..641D - Astronomy and Astrophysics, volume 441, 641-651 (2005/10-2)

Constraints on parameters of B-type pulsators from combined multicolour photometry and radial velocity data. I. β Cephei stars.

DASZYNSKA-DASZKIEWICZ J., DZIEMBOWSKI W.A. and PAMYATNYKH A.A.

Abstract (from CDS):

We analyze data on pulsation amplitudes and phases for two β Cephei stars, δ Cet and ν Eri. Stroemgren photometry and radial velocity measurements are used simultaneously to obtain constraints on mean parameters of the stars and identification of the excited modes. The inference about the radial mode order and mean star parameters is based on comparison of certain complex parameter, f, determined from data, with its counterpart derived from linear nonadiabatic modelling of stellar oscillations. The theoretical f values are very sensitive to the adopted opacity data. In our modelling we rely on the data from OPAL and OP projects. Significant differences were found. New seismic models of ν Eri were constructed with both the OPAL and OP opacities.

Abstract Copyright:

Journal keyword(s): stars: oscillation (including pulsations) - stars: early-type - stars: atmospheres

Simbad objects: 3

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Number of rows : 3

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 * del Cet bC* 02 39 28.95579 +00 19 42.6345 2.97 3.85 4.07     B2IV 365 0
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5698 1
3 * nu. Eri bC* 04 36 19.1414419 -03 21 08.856678 2.82 3.737 3.928     B2III 366 0

    Equat.    Gal    SGal    Ecl

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2020.08.09-14:07:09

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