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The evolution of binary systems consisting of an asymptotic giant branch star of mass equal to 3 M_sun or 5 M_sun, and a main sequence star of mass equal to 0.4 M_sun or 0.6 M_sun with orbital periods > 200 days has been followed from the…

We have discovered a partially eclipsing white dwarf, low-mass M dwarf binary (3 hour 54.41 second orbital period), SDSS J143547.87+373338.5, from May 2007 observations at the WIYN telescope. Here we present blue band photometry of three…

Astrophysics · Physics 2009-11-13 Justin D. R. Steinfadt , Lars Bildsten , Steve B. Howell

A sample of 33 eclipsing binaries observed in a field of the SMC with FLAMES@VLT is presented. The radial velocity curves obtained, together with existing OGLE light curves, allowed the determination of all stellar and orbital parameters of…

Astrophysics · Physics 2009-11-13 Pierre L. North , Romain Gauderon , Frederic Royer

Starting from more than 11,200 short-period (less than 0.5 days) EW-type eclipsing binary candidates with the All-Sky Automated Survey for Supernovae (ASAS-SN) V-band light curves, we use MCMC and neural networks (NNs) to obtain the mass…

Solar and Stellar Astrophysics · Physics 2024-01-30 Xu-Zhi Li , Qing-Feng Zhu , Xu Ding , Xiao-Hui Xu , Hang Zheng , Jin-Sheng Qiu , Ming-Chao Liu

We present an analysis of LAMOST J171013.211+532646.04 (hereafter J1710), a binary system comprising a hot subdwarf B star (sdB) and a white dwarf (WD) companion. Multi-epoch spectroscopy reveals an orbital period of 109.20279 minutes,…

Solar and Stellar Astrophysics · Physics 2025-01-29 Mingkuan Yang , Hailong Yuan , Zhongrui Bai , Zhenwei Li , Yuji He , Xin Huang , Yiqiao Dong , Mengxin Wang , Xuefei Chen , Junfeng Wang , Yao Cheng , Haotong Zhang

The Super Wide Angle Search for Planets (SuperWASP) is a whole-sky high-cadence optical survey which has searched for exoplanetary transit signatures since 2004. Its archive contains long-term light curves for ~30 million 8-15 V magnitude…

Solar and Stellar Astrophysics · Physics 2015-04-28 M. E. Lohr

Photometric analysis of $BVR_C$ light curves of newly discovered eclipsing binary GSC 0008-00901 is presented. The orbital period is improved to 0.28948(11) days. Photometric parameters are determined, as well. The analysis yielded to…

Astrophysics · Physics 2008-11-26 S. Parimucha , T. Pribulla , M. Vaňko , P. Dubovsky , L. Hambalek

We present observations of a new low-mass double-lined eclipsing binary system discovered using repeat observations of the celestial equator from the Sloan Digital Sky Survey II. Using near-infrared photometry and optical spectroscopy we…

Astrophysics · Physics 2010-04-29 Cullen H. Blake , Guillermo Torres , Joshua S. Bloom , B. Scott Gaudi

We have discovered a doubly eclipsing, bound, quadruple star system in the field of K2 Campaign 7. EPIC 219217635 is a stellar image with $Kp = 12.7$ that contains an eclipsing binary (`EB') with $P_A = 3.59470$ d and a second EB with $P_B…

Eclipses in the 14.4-day period double-lined binary SS Lac were observed photographically and visually early in the 20th century, but stopped some 50 or 60 years ago. This has been explained by the presence of a distant third star in the…

Astrophysics · Physics 2009-10-31 Guillermo Torres

We present a detailed study of the F-type detached eclipsing binary BK Peg, based on new photometric and spectroscopic observations. The two components, which have evolved to the upper half of the main-sequence band, are quite different…

Solar and Stellar Astrophysics · Physics 2015-05-18 J. V. Clausen , S. Frandsen , H. Bruntt , E. H. Olsen , B. E. Helt , K. Gregersen , D. Juncher , P. Krogstrup

The CCD photometric observations of the eclipsing binary PS Persei (PS Per) were obtained on two consecutive days in 2009. The 2003 version Wilson-Devinney code was used to analyze the first complete light curves in $V$ and $R$ bands. It is…

Solar and Stellar Astrophysics · Physics 2015-05-19 Jinzhao Yuan

A long-term spectroscopic and photometric survey of the most luminous and massive stars in the vicinity of the super-massive black hole Sgr A* revealed two new binaries; a long-period Ofpe/WN9 binary, GCIRS 16NE, with a modest eccentricity…

Astrophysics of Galaxies · Physics 2015-06-16 O. Pfuhl , T. Alexander , S. Gillessen , F. Martins , R. Genzel , F. Eisenhauer , T. K. Fritz , T. Ott

We present a catalog of 56 candidate intermediate mass eclipsing binary systems extracted from the 3rd data release of the All Sky Automated Survey. We gather pertinent observational data and derive orbital properties, including…

Solar and Stellar Astrophysics · Physics 2015-05-27 S. J. Williams , D. R. Gies , J. W. Helsel , R. A. Matson , S. Caballero-Nieves

In this paper we report on $\sim10$ years of observations of PSR J2051$-$0827, at radio frequencies in the range 110--4032 MHz. We investigate the eclipse phenomena of this black widow pulsar using model fits of increased dispersion and…

High Energy Astrophysical Phenomena · Physics 2019-09-16 E. J. Polzin , R. P. Breton , B. W. Stappers , B. Bhattacharyya , G. H. Janssen , S. Osłowski , M. S. E. Roberts , C. Sobey

We derive masses and radii for both components in the single-lined eclipsing binary HAT-TR-205-013, which consists of a F7V primary and a late M-dwarf secondary. The system's period is short, $P=2.230736 \pm 0.000010$ days, with an orbit…

The eclipsing polar CSS081231 turned bright (V_max ~ 14.5) in late 2008 and was subsequently observed intensively with small and medium-sized telescopes. A homogeneous analysis of this comprehensive dataset comprising 109 eclipse epochs is…

Solar and Stellar Astrophysics · Physics 2015-06-23 A. D. Schwope , F. Mackebrandt , B. D. Thinius , C. Littlefield , P. Garnavich , A. Oksanen , T. Granzer

The detection of O- and B-type stars with extremely low-mass companions is very important for understanding the formation and evolution of binary stars. However, their finding remains a challenge because the low-mass components in such…

Solar and Stellar Astrophysics · Physics 2024-09-17 Linfeng Chang , Shengbang Qian , Lei Zang , Fuxing Li

(Abridged) In the binary radio pulsar system J0737-3039, the faster pulsar A is eclipsed once per orbit. We construct a simple geometric model which successfully reproduces the eclipse light curves, based on the idea that the radio pulses…

Astrophysics · Physics 2009-11-10 Maxim Lyutikov , Christopher Thompson

We identify $240$ short-period ($P \lesssim 10$ days) binary systems in the TESS data, $180$ of which are heartbeat binaries (HB). The sample is mostly a mix of A and B-type stars and primarily includes eclipsing systems, where over $30\%$…

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