Published November 1, 2013 | Version v1
Journal article Metadata-only

SHORT TIMESCALE VARIATIONS IN THE ATMOSPHERE OF ANTARES A

Creators

  • 1. Department of Physics and Astronomy, Western University, London, ON (Canada)

Description

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

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/777/1/10

Additional details

Identifiers

DOI
10.1088/0004-637X/777/1/10;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
777
Journal Issue
1
Journal Page Range
[6 p.]
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45091926
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ASTRONOMY; ASTROPHYSICS; CONVECTION; OSCILLATIONS; PHOTOMETRY; RADIAL VELOCITY; RESOLUTION; STARS; VARIATIONS
Descriptors DEC
ENERGY TRANSFER; HEAT TRANSFER; MASS TRANSFER; PHYSICS; VELOCITY