SIMBAD references

2012ApJ...747..108M - Astrophys. J., 747, 108 (2012/March-2)

Asteroseismology of the nearby SN-II progenitor: Rigel. I. The MOST high-precision photometry and radial velocity monitoring.

MORAVVEJI E., GUINAN E.F., SHULTZ M., WILLIAMSON M.H. and MOYA A.

Abstract (from CDS):

Rigel (β Ori, B8 Ia) is a nearby blue supergiant displaying α Cyg type variability, and is one of the nearest Type II supernova progenitors. As such it is an excellent test bed to study the internal structure of pre-core-collapse stars. In this study, for the first time, we present 28 days of high-precision MOST photometry and over six years of spectroscopic monitoring. We report 19 significant pulsation modes of signal-to-noise ratio, S/N ≳ 4.6 from radial velocities, with variability timescales ranging from 1.21 to 74.7 days, which are associated with high-order low-degree gravity modes. While the radial velocity variations show a degree of correlation with the flux changes, there is no clear interplay between the equivalent widths of different metallic and Hα lines.

Abstract Copyright:

Journal keyword(s): asteroseismology - techniques: spectroscopic - stars: individual: Rigel - Sun: oscillations - supergiants

VizieR on-line data: <Available at CDS (J/ApJ/747/108): data1.dat data2.dat>

Simbad objects: 10

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2019.10.21-08:33:36

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