Absolute dimensions of solar-type eclipsing binaries. I. uvby light curves for HS Aqr, KX Aqr, AL Ari, V963 Cen, MR Del, NY Hya, DU Leo, UW LMi, and V358 Pup

Details Absolute dimensions of solar-type eclipsing binaries. I. uvby light curves for HS Aqr, KX Aqr, AL Ari, V963 Cen, MR Del, NY Hya, DU Leo, UW LMi, and V358 Pup Absolute dimensions of solar-type eclipsing binaries. I. uvby light curves for HS Aqr, KX Aqr, AL Ari, V963 Cen, MR Del, NY Hya, DU Leo, UW LMi, and V358 Pup

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...374..980c&link_type=abstract

Astronomy and Astrophysics, v.374, p.980-996 (2001)

Astronomy and Astrophysics

Astrophysics

20

Stars: Fundamental Parameters, Stars: Binaries: Close, Stars: Binaries: Eclipsing, Stars: Evolution, Stars: Late Type, Techniques: Photometric

Scientific paper

We present complete uvby light curves of 9 recently discovered eclipsing binaries having late F, G, and K type components within or near the main-sequence band. They are the first results from a long term program carried out since 1994 at the Strömgren Automatic Telescope at ESO, La Silla. The aim is to provide the accurate absolute dimensions for solar-type stars needed for critical tests of the corresponding theoretical models. A serious dilemma appears to be present in the comparison of predictions from current stellar models with fundamental properties of known 0.7-1.1 Msun eclipsing binaries (Popper \cite{dmp97b}, Clausen et al. \cite{granada99b}). Spectroscopic observations of the 9 eclipsing binaries are either available or are being obtained, and detailed analyses of the individual systems will be published in a series of subsequent papers. The light curves were obtained as part of a systematic search for new eclipsing systems among a large sample of (mostly) spectroscopic binaries. Catalogues of the extensive uvby and beta photometry from this search will be published separately. Based on observations carried out with the Strömgren Automatic Telescope (SAT) at ESO, La Silla, Chile. When the individual analyses are finished, Tables 12-20 will gradually be made available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/374/980

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