Spectroscopic and photometric observations of the selected Algol-type binaries - IV. V799Cassiopeiae, BX Piscium and HD 172189

Details Spectroscopic and photometric observations of the selected Algol-type binaries - IV. V799Cassiopeiae, BX Piscium and HD 172189 Spectroscopic and photometric observations of the selected Algol-type binaries - IV. V799Cassiopeiae, BX Piscium and HD 172189

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mnras.392..757i&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 392, Issue 2, pp. 757-767.

Astronomy and Astrophysics

Astronomy

3

Binaries: Eclipsing, Binaries: General, Binaries: Spectroscopic, Stars: Individual: V799Cas, Stars: Individual: Bxpsc, Stars: Individual: Hd 172189

Scientific paper

We present new radial velocities and UBV photometric observations of three eclipsing binaries, V799Cas, BXPsc and HD172189, in order to increase the number of close binaries with absolute parameters determined accurately. Standard wide-band indices for the systems and comparison stars were determined accurately. Using the times of mid-eclipses, new ephemerides are calculated for three systems. V799Cas and HD172189 consist of two well-detached components in eccentric orbits. BXPsc is a single-lined eclipsing binary which consists of a late-A and an early-K star. The effective temperatures of the hotter components and reddening of the systems have been estimated from Johnson wide-band UBV photometric calibrations. The UBV photometric data and radial velocities were analysed simultaneously for the systems' parameters using Wilson-Devinney code. The masses have been found to be 3.08 +/- 0.40, 2.97 +/- 0.40; 1.85 +/- 0.14, 0.80 +/- 0.08; 2.06 +/- 0.15, 1.87 +/- 0.14 Msolar for the primary and secondary stars of V799Cas, BXPsc and HD172189, respectively. The radii of the components are derived in the case of V799Cas: 3.23 +/- 0.14, 3.20 +/- 0.14; in those of BXPsc: 3.76 +/- 0.14, 2.18 +/- 0.09; and HD172189: 4.01 +/- 0.09, 2.97 +/- 0.07 Rsolar. We have calculated the distances to the systems of V799Cas, BXPsc and HD172189 as 607 +/- 35, 213 +/- 6 and 432 +/- 12 pc, respectively, using bolometric magnitudes and empirical bolometric corrections for the component stars. The model predictions match the measured properties of V779Cas, BXPsc and HD172189 for an age of 250 Myr, 1 Gyr and 890 Myr, respectively. A subsolar fractional metal abundance, Z ~ 0.008, provides a better match to the absolute parameters of all three systems.
Based on observations collected at the Catania Astrophysical Observatory (Italy), Ege University Observatory (İzmir, Turkey) and David Dunlap Observatory (Canada).
E-mail: cibanoglu@ege.edu.tr

Affiliated with

Also associated with

No associations

Rating

Spectroscopic and photometric observations of the selected Algol-type binaries - IV. V799Cassiopeiae, BX Piscium and HD 172189 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectroscopic and photometric observations of the selected Algol-type binaries - IV. V799Cassiopeiae, BX Piscium and HD 172189, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic and photometric observations of the selected Algol-type binaries - IV. V799Cassiopeiae, BX Piscium and HD 172189 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1139284