Light curves of ROTSE-I delta Scuti type stars (Jin+, 2003)

Details Light curves of ROTSE-I delta Scuti type stars (Jin+, 2003) Light curves of ROTSE-I delta Scuti type stars (Jin+, 2003)

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat..34040621j&link_type=abstract

VizieR On-line Data Catalog: J/A+A/404/621. Originally published in: 2003A&A...404..621J

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Stars: Variable, Photometry: Ccd

Scientific paper

We present multi-passband CCD photometry of 20 ROTSE-I δ Scuti type pulsating stars and 1 RR Lyrae star to re-classify their variable types using the comparison of amplitudes between V and I passbands. For the re-classification, we used a criterion that pulsating stars have larger amplitude differences between passbands than eclipsing binaries because brightness changes of pulsating stars are mainly due to the temperature variations. As a result, only six stars were re-confirmed as δ Scuti variables and thirteen stars turned out to be W UMa type eclipsing binaries. The other two stars were identified as one cataclysmic variable and one non-variable, respectively. Our results suggest that a number of ROTSE-I δ Scuti type stars, which do not show typical pulsating light curves of high amplitude δ Scuti stars, are W UMa type eclipsing binaries.
(22 data files).

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