Combined light curve and radial velocity analysis of the neglected contact binary S Ant

被引：0

作者：

Latkovic, Olivera ^{[1
]}

Ceki, Atila ^{[1
]}

机构：

[1] Astron Observ, Volgina 7, Belgrade 11000, Serbia

来源：

NEW ASTRONOMY | 2024年 / 113卷

关键词：

Stars: Binaries: Close; Stars: Binaries: Eclipsing; Stars: Fundamental parameters; Stars: Individual: S Ant; PHYSICAL PARAMETERS; CLOSE BINARIES; STARS; SYSTEMS; ORIGIN; AGE;

D O I：

10.1016/j.newast.2024.102291

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first combined photometric and spectroscopic solution of the bright southern contact binary S Ant based on the Transiting Exoplanet Survey Satellite (TESS) light curve and the radial velocities from the David Dunlap Observatory survey. S Ant is a W UMa type binary in deep contact, with a mass ratio of 0.34 and a relatively massive and hot F-type primary. Beside the standard modeling of the phase-binned light curve, we also perform "seasonal modeling" where we treat each of the 83 orbital cycles present in the TESS data as a separate light curve. The resulting ensemble of solutions shows evidence of quasi-periodic migration of a long-lived, dark, polar spot. The migration is confirmed independently by eclipse time variations which display remarkably strong correlation with the spot location.

引用

页数：8

共 50 条

[31] FIRST PRECISION LIGHT CURVE ANALYSIS OF THE NEGLECTED EXTREME MASS RATIO SOLAR-TYPE BINARY HR BOOTIS
Samec, Ronald G.
Benkendorf, Barry
Dignan, James B.
Robb, Russell
Kring, James
Faulkner, Danny R.
ASTRONOMICAL JOURNAL, 2015, 149 (04):
[32] A LIGHT SYNTHESIS PROGRAM FOR BINARY STARS .2. LIGHT-CURVE AND COLOR CURVE EFFECTS IN A CONTACT SYSTEM
LINNELL, AP
ASTROPHYSICAL JOURNAL, 1986, 300 (01): : 304 - 313
[33] Light Curve Analysis of some Eclipsing Binary Systems
M. S. Aleanzi
M. M. Elkateeb
Astrophysics, 2021, 64 : 33 - 40
[34] MODELLING OF LIGHT AND RADIAL VELOCITY CURVES IN X-RAY BINARY SYSTEMS
Antokhina, E. A.
PROCEEDINGS OF THE XV NATIONAL CONFERENCE OF ASTRONOMERS OF SERBIA, 2009, 86 : 67 - 74
[35] Light Curve Analysis of some Eclipsing Binary Systems
Aleanzi, M. S.
Elkateeb, M. M.
ASTROPHYSICS, 2021, 64 (01) : 33 - 40
[36] The light-curve intrinsic variability in 47 Kepler contact binary stars
Debski, B.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 516 (04) : 5003 - 5020
[37] Light-curve study and physical properties of the contact binary EQ Tauri
Hrivnak, Bruce J.
Lu, Wenxian
Eaton, Jeffery
Kenning, Daniel
ASTRONOMICAL JOURNAL, 2006, 132 (02): : 960 - 966
[38] A RADIAL VELOCITY AND LIGHT CURVE STUDY OF PULSATIONS AND BINARITY IN PROTO-PLANETARY NEBULAE
Hrivnak, B. J.
Lu, W.
de Steene, G. Van
Van Winckel, H.
Sperauskas, J.
Bohlender, D.
PHYSICS OF EVOLVED STARS: A CONFERENCE DEDICATED TO THE MEMORY OF OLIVIER CHESNEAU, 2015, 71-72 : 127 - 128
[39] Contact binaries: II. The importance of deformation caused by rotation and tides to the light curve of a contact binary
Luo ChangQing
Huang RunQian
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2012, 55 (05) : 899 - 906
[40] First ground-based photometry and light curve analysis of the recently discovered contact binary HX UMa
Selam, S
Albayrak, B
Yilmaz, M
Senavci, HV
Özavci, I
Çetintas, C
ASTROPHYSICS AND SPACE SCIENCE, 2005, 296 (1-4) : 305 - 308

← 1 2 3 4 5 →