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Asteroseismology from Space: WIRE Monitoring of the δ Sct Star θ2 Tauri

Published online by Cambridge University Press:  12 April 2016

E. Poretti ,
D. Buzasi ,
R. Laher ,
J. Catanzarite  and
T. Conrow
E. Poretti
Affiliation:
Osservatorio Astronomico di Brera, Italy
D. Buzasi
Affiliation:
Department of Physics, US Air Force Academy, Colorado, USA
R. Laher
Affiliation:
SIRTF Science Center, California Institute of Technology, USA
J. Catanzarite
Affiliation:
Interferometry Science Center, California, USA
T. Conrow
Affiliation:
Infrared Processing and Analysis Center, California, USA

Extract

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Soon after launch in March 1999, the primary science instrument onboard the Wide-Field Infrared Explorer (WIRE) satellite failed due to loss of coolant. However, it proved possible to begin an asteroseismology program using the 52-mm aperture star camera. A few bright stars were monitored with the 512x512 SITe CCD in a bandpass approximately equivalent to V + R; further details about the orbit, the detector and the raw data reduction can be found in Buzasi et al. (2000) and Buzasi (2000). We included the binary star θ2 Tauri among the targets. It is composed of an A7IV primary and an A5V secondary (P = 140.728 d). The primary is a a δ Scuti star which has been observed several times in the last twenty years. Five terms have been determined in its light curve (Breger, 1989 and references therein); Li et al. (1997) demonstrated the amplitude variability of some of these terms by comparing different campaigns.

Type
Part 6. Asteroseismology from Space and from the Ground
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 624 - 625
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Breger, M., Garrido, R., Huang, Lin, Jiang, Shi-yang, Guo, Zi-he, Frueh, M., & Paparo, M. 1989, A&A, 214, 209 Google Scholar
Buzasi, D. 2000, in The Third MONS Workshop: Science Preparation and Target Selection, eds. Teixeira, T. & Bedding, T., (Aarhus Universitet Publ.), 9 Google Scholar
Buzasi, D., Catanzarite, J., Laher, R., Conrow, T., & Kreidl, T. 2000, ApJ, 532, 133.CrossRefGoogle Scholar
Li, Z.-P., Zhou, A.-Y., & Yang, D. 1997, PASP, 109, 217 Google Scholar
Poretti, E., Buzasi, D., Laher, R., Catanzarite, J., & Conrow, T. 2002, A&A, in press (astro-ph/0111361)Google Scholar