SIMBAD references

2013ApJ...777...10P - Astrophys. J., 777, 10 (2013/November-1)

Short timescale variations in the atmosphere of Antares A.

PUGH T. and GRAY D.F.

Abstract (from CDS):

We analyze three years of high-resolution spectroscopic data and find radial velocity variations with a characteristic timescale of 100±6 days that are nearly sinusoidal. Simultaneous variations in line-depth ratios imply temperature variations of up to 100 K. No photometric variation is seen on a 100 day timescale. The timescale of the variation and its resonant nature suggest solar-like oscillations driven by large-scale convection.

Abstract Copyright: ∼

Journal keyword(s): convection - stars: individual: alpha Sco A - stars: late-type - supergiants - techniques: radial velocities - techniques: spectroscopic

Simbad objects: 3

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