Results 1 to 10 of about 84,288 (244)

Heartbeat Stars and the Ringing of Tidal Pulsations [PDF]

EPJ Web of Conferences, 2015
With the advent of high precision photometry from satellites such as Kepler and CoRoT, a whole new layer of interesting and astounding astronomical objects has been revealed: heartbeat stars are an example of such objects.
Hambleton Kelly, Kurtz Don, Prša Andrej, Fuller Jim, Thompson Susan   +4 more
doaj   +3 more sources

A Application of WD Model to EB Type Contact Binary System [PDF]

Journal of Astronomy and Space Sciences, 2000
The EB type contact binaries show large temperature difference ( T 1,000K) between two components. Thus we have modified the mode 3 of the WD program to adjust albedos, limb darkening coefficients and gravity darkening exponents for both components of ...
Su-Yeon Oh, Kyu-Dong Oh
doaj  

Absolute Dimensions of Contact Binary Stars in Baade Window [PDF]

Journal of Astronomy and Space Sciences, 1999
The light curves of the representative 6 contact binary stars observed by OGLE Project of searching for dark matter in our Galaxy have been analyzed by the method of the Wilson and Devinney Differential Correction to find photometric solutions.
Young Woon Kang
doaj  

A Method of Rapidly Deriving Late-type Contact Binary Parameters and Its Application in the Catalina Sky Survey

The Astrophysical Journal Supplement Series
With the continuous development of large optical surveys, a large number of light curves of late-type contact binary systems (CBs) have been released.
JinLiang Wang, Xu Ding, JiaJia Li, JianPing Xiong, QiYuan Cheng, KaiFan Ji   +5 more
doaj   +1 more source

The Investigation of 84 TESS Totally Eclipsing Contact Binaries

The Astronomical Journal
Based on the eclipsing binary catalog provided by A. Prša et al., 84 totally eclipsing contact binaries with stable light curves were selected. The Transiting Exoplanet Survey Satellite light curves of these 84 targets were studied using the Physics Of ...
Yani Guo, Kai Li, Liheng Wang, Qiqi Xia, Xiang Gao, Jingran Xu, Jingyi Wang   +6 more
doaj   +1 more source

A Study of Nine Extremely Low Mass Ratio-contact Binary Systems

The Astronomical Journal
Low-mass ratio systems (LMR) are a very interesting class of contact eclipsing binaries challenging the theoretical models of stability. These systems are also considered possible progenitors of the rare low-mass optical transients called red novae.
Eleni Lalounta, Panagiota-Eleftheria Christopoulou, Athanasios Papageorgiou, C. E. Ferreira Lopes, Márcio Catelan   +4 more
doaj   +1 more source

Binary Analysis and Period Study of the Long-period, High-mass-ratio Contact Binary KIC 7766185

The Astronomical Journal
We present an in-depth photometric and spectroscopic study of the contact binary KIC 7766185. Spectroscopic observations were conducted on the Mayall 4 m telescope at Kitt Peak National Observatory and used to extract radial velocities.
Conor M. Larsen, Andrej Prša
doaj   +1 more source

The First Photometric Analysis of Two Low-mass-ratio Contact Binary Systems in TESS Survey

The Astronomical Journal
Low-mass-ratio ( q ) contact binary systems are progenitors of stellar mergers such as blue stragglers or fast-rotating FK Com stars. In this study, we present the first light curve analysis of two newly identified low mass-ratio contact binary systems ...
Qiyuan Cheng, Jianping Xiong, Xu Ding, Kaifan Ji, Jiao Li, Chao Liu, Jiangdan Li, Jingxiao Luo, Xin Lyu, Zhanwen Han, Xuefei Chen   +10 more
doaj   +1 more source

Physical Parameters of 12,201 ASAS-SN Contact Binaries Determined by a Neural Network

The Astrophysical Journal Supplement Series
In the era of astronomical big data, more than one million contact binaries have been discovered. Traditional approaches of light-curve analysis are inadequate for investigating such an extensive number of systems.
Kai Li, Li-Heng Wang
doaj   +1 more source

An Estimate of the Binary Star Fraction among Young Stars at the Galactic Center: Possible Evidence of a Radial Dependence

The Astrophysical Journal
We present the first estimate of the intrinsic binary fraction of young stars across the central ≈0.4 pc surrounding the supermassive black hole (SMBH) at the Milky Way Galactic center (GC).
Abhimat K. Gautam, Tuan Do, Andrea M. Ghez, Devin S. Chu, Matthew W. Hosek Jr., Shoko Sakai, Smadar Naoz, Mark R. Morris, Anna Ciurlo, Zoë Haggard, Jessica R. Lu   +10 more
doaj   +1 more source