Possible Mass and Angular Momentum Loss in Algol-Type Binaries. V. RT Persei and TX Ursae Majoris

@article{Qian2001PossibleMA,  title={Possible Mass and Angular Momentum Loss in Algol-Type Binaries. V. RT Persei and TX Ursae Majoris},  author={Sheng-Bang Qian},  journal={The Astronomical Journal},  year={2001},  volume={122},  pages={2686 - 2691},  url={https://api.semanticscholar.org/CorpusID:121698690}}
  • S. Qian
  • Published1 November 2001
  • Physics
  • The Astronomical Journal
The changes in the orbital periods of two EA-type eclipsing binaries, RT Per and TX UMa, are studied in detail, based on the analysis of their times of minimum light. For RT Per, it is shown that the trend of the O-C curve can be described by a parabola opening at the bottom, which indicates a secular period decrease at the rate dP/dt = -9.29 × 10-8 days yr-1. By subtracting the secular decrease in the O-C curve, the residuals display an oscillatory variation that can either be described by a… 

23 Citations

Orbital Period Studies of Two Algol‐Type Eclipsing Binary Systems: TY Pegasi and X Trianguli

O - C curves of two EA‐type eclipsing binaries, TY Peg and X Tri, are formed and studied in detail based on all available times of light minimum. For TY Peg, it was discovered that the general trend…

Orbital period variations of four Algol-type eclipsing binaries: SWCyg, UU Leo, XX Cep and BO Vul

The orbital period behaviours of four Algol-type eclipsing binaries SW Cyg, UU Leo, XX Cep and BO Vul are studied, by using all available times of minimum light in the literature. Their O – C…

A Double Wave in the Orbital-period Variations of the Eclipsing Binary RT Per

Orbital-period variations of the low-mass, semi-detached eclipsing binary RT Per are analyzed. In addition to the secular variation of the orbital period determined by the mass transfer between the…

TZ Lyrae: an Algol-type Eclipsing Binary with Mass Transfer

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…

Complex Period Variations in the Binary System IM Aurigae

Results of a new light-curve analysis and period variation study of the eclipsing binary IM Aur are presented. Four solutions are given according to the dierent spectral types of the primary,…

Long-Term Orbital Period Variations for EU Hydrae

Long-term period variations of an Algol-type eclipsing binary star, EU Hydrae, are presented based on an analysis of its O - C curve. As in the cases of other Algols studied in recent papers by one…

The Near-Contact Binary RU Ursae Minoris

The near-contact binary RU UMi with an F0-type primary and a K-type secondary was observed in 2003. With the latest version of the Wilson-Devinney code, the photometric elements were computed. The…

Period investigation of Algol systems TZ Eri and TU Her

TZ Eri and TU Her are both classic Algol-type systems (Algols). By observing and collecting times of minimum light, we constructed the O – C curves for the two systems. The long-time upward and…

20 References

Possible Mass and Angular Momentum Loss in Algol-Type Binaries. IV. UU Andromedae and Z Persei

The orbital periods of two Algol-type binaries, UU And and Z Per, are studied based on the analysis of the O-C data. It is discovered that the orbital period of UU And shows seven irregular jumps…

Possible Mass and Angular Momentum Loss in Algol-Type Binaries. II. TT Delphini, BO Monocerotis, and Y Piscium

The period variations of three Algol-type binaries, TT Del, BO Mon, and Y Psc, are studied based on the analysis of the O-C observations. The orbital period of TT Del is discovered to be decreasing…

Possible Mass and Angular Momentum Loss in Algol-Type Binaries. III. TU Cancri, FZ Delphini, AY Geminorum, VZ Leonis, FH Orionis, IU Persei, XZ Persei, and BE Vulpeculae

Orbital period variations of eight Algol-type binaries, TU Cnc, FZ Del, AY Gem, VZ Leo, FH Ori, IU Per, XZ Per, and BE Vul, are studied based on the analysis of the O-C observations. It is discovered…

Light-time effect in RT Persei

The minimum time residuals (O−C) of RT Persei, obtained by using all the times of minima is interpreted in terms of light-time effect, caused by the presence of two more distant components. This…

SPECTROGRAPHIC STUDY OF THE ECLIPSING BINARY TX URSAE MAJORIS

TX Ursae Majoris was found to be a spectroscopic binary with a period of 3.09 days by Pearce (1932) in 1925. Later Rugemer ( 1931 ) and Schneller ( 1931 ) independently demonstrated that TX UMa was…

Spectral behaviour of the eclipsing binary TX UMa around primary minimum

Sixty-one blue spectrograms of TX UMa were obtained in the years 1969–1970, mainly in phases close to the primary minimum of the eclipsing system. The radial velocity curve displays clear rotational…

A reanalysis of the light curve of RT Persei with the W-D code

The UBV photometric observations of RT Per, from Sanwal and Chaubey (1981), were analyzed by the Wilson and Devinney code (1971). The light curves include reflection effects that for the first time…

The semi-detached system RT Persei and its light curve

The observedV light curve of the eclipsing binary RT Persei has been analysed by four different methods of solution to get the geometrical and photometric elements of the system. The results show a…

On the Dimensions and Constitution of Variable Stars.

Gaposchkin, C., and Menzel, D. H., Ibid., No. 428, 1-13 (1936); Payne-Gaposchkin, C., and Gaposchkin, S., Ibid., No. 445, 1-19 (1942). 2 Wyse, A. H., Astrophys. Jour., 95, 356-385 (1942). 3 Bowen, I.…

Related Papers

Showing 1 through 3 of 0 Related Papers