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The TAOS Project Stellar Variability II. Detection of 15 Variable Stars
- Publication Year :
- 2010
-
Abstract
- The Taiwanese-American Occultation Survey (TAOS) project has collected more than a billion photometric measurements since 2005 January. These sky survey data-covering timescales from a fraction of a second to a few hundred days-are a useful source to study stellar variability. A total of 167 star fields, mostly along the ecliptic plane, have been selected for photometric monitoring with the TAOS telescopes. This paper presents our initial analysis of a search for periodic variable stars from the time-series TAOS data on one particular TAOS field, No. 151 (RA = 17$^{\rm h}30^{\rm m}6\fs$67, Dec = 27\degr17\arcmin 30\arcsec, J2000), which had been observed over 47 epochs in 2005. A total of 81 candidate variables are identified in the 3 square degree field, with magnitudes in the range 8 < R < 16. On the basis of the periodicity and shape of the lightcurves, 29 variables, 15 of which were previously unknown, are classified as RR Lyrae, Cepheid, delta Scuti, SX Phonencis, semi-regular and eclipsing binaries.<br />Comment: 20 pages, 6 figures, accepted in The Astronomical Journal
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1003.2526
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/0004-6256/139/5/2026