Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007chjaa...7..258y&link_type=abstract
Chinese Journal of Astronomy and Astrophysics, Volume 7, Issue 2, pp. 258-264 (2007).
Astronomy and Astrophysics
Astrophysics
2
Stars: Binaries: Close, Stars: Binaries: Eclipsing, Stars: Individual: Tz Lyrae
Scientific paper
We present a detailed investigation of the Algol-type binary TZ Lyrae, based on 55 light minimum timings spanning 90 years. It is found that the orbital period shows a long-term increase with a cyclic variation superimposed. The rate of the secular increase is dP/dt=+7.18× 10^{-8} d yr^{-1}, indicating that a mass transfer from the less massive component to the more massive one at a rate of dm=+2.21×10^{-8} M_&sun; yr^{-1}. The cyclic component, with a period of P_{3}=45.5 yr and an amplitude of A=0.0040°, may be interpreted as either the light-time effect in the presence of a third body or magnetic activity cycles in the components. Using the latest version Wilson-Devinney code, a revised photometric solution was deduced from B and V observations. The results show that TZ Lyr is an Algol-type eclipsing binary with a mass ratio of q=0.297(±0.003). The semidetached configuration with a lobe-filling secondary suggests a mass transfer from the secondary to the primary, which is in agreement with the long-term period increase of the binary system.
Yang Yuan-Gui
Yin Xin-guo
No associations
LandOfFree
TZ Lyrae: an Algol-type Eclipsing Binary with Mass Transfer 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 TZ Lyrae: an Algol-type Eclipsing Binary with Mass Transfer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and TZ Lyrae: an Algol-type Eclipsing Binary with Mass Transfer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1078294