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Related papers: Asiago eclipsing binaries program. IV. SZ Camelopa…

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We present follow-up observations and analysis of the recently discovered short period low-mass eclipsing binary, SDSS J001641-000925. With an orbital period of 0.19856 days, this system has one of the shortest known periods for an M dwarf…

We identify 231 objects in the newly released Cycle 0 dataset from the Kepler Mission as double-eclipse, detached eclipsing binary systems with Teff < 5500 K and orbital periods shorter than ~32 days. We model each light curve using the…

Solar and Stellar Astrophysics · Physics 2015-05-19 J. L. Coughlin , M. Lopez-Morales , T. E. Harrison , N. Ule , D. I. Hoffman

We report seismic analyses of five pulsating subdwarf B (sdBV) stars observed during Kepler's K2 mission, each with a white dwarf companion. We find three of the five to be g-mode-dominated hybrid pulsators. For the other two, we only…

Solar and Stellar Astrophysics · Physics 2025-06-06 M. D. Reed , A. S. Baran , J. H. Telting , R. H. Ostensen , C. S. Jeffery , Y. Gaibor

We have investigated multiband optical photometric variability and stability of the H$\alpha$ line profile of the transient X-ray binary IGR J01583+6713. We set an upper limit of 0.05 mag on photometric variations in the {\it V} band over a…

Astrophysics · Physics 2009-11-13 Ramanpreet Kaur , Biswajit Paul , Brijesh Kumar , Ram Sagar

Double-close-binary quadruples (2+2 systems) are hierarchical systems of four stars where two short-period binary systems move around their common center of mass on a wider orbit. Using Gaia Early Data Release 3, we search for comoving…

Solar and Stellar Astrophysics · Physics 2022-03-02 Gavin B. Fezenko , Hsiang-Chih Hwang , Nadia L. Zakamska

We report the very first analysis of 27 eclipsing binary systems with high eccentricities that sometimes reach up to 0.8. The orbital periods for these systems range from 1.4 to 37 days, and the median of the sample is 10.3 days. Star…

Solar and Stellar Astrophysics · Physics 2021-08-17 P. Zasche , Z. Henzl , M. Masek

We present the analysis of photometric and spectroscopic data of six bright Galactic Cepheids: GH Carinae, V419 Centauri, V898 Centauri, AD Puppis, AY Sagittarii, and ST Velorum. Based on new radial velocity data (in some cases supplemented…

Solar and Stellar Astrophysics · Physics 2013-03-20 L. Szabados , A. Derekas , L. L. Kiss , J. Kovács , R. I. Anderson , Cs. Kiss , T. Szalai , P. Székely , J. L. Christiansen

We present high-speed, three-colour photometry of the eclipsing cataclysmic variable SDSS J170213.26+322954.1 (hereafter SDSS J1702+3229). This system has an orbital period of 2.4 hours, placing it within the ``period gap'' for cataclysmic…

Astrophysics · Physics 2009-11-11 S. P. Littlefair , V. S. Dhillon , T. R. Marsh , B. T. Gaensicke

A multisite photometric campaign for the Beta Cephei and eclipsing variable 16 Lacertae is reported. 749 h of high-quality differential photoelectric Stromgren, Johnson and Geneva time-series photometry were obtained with ten telescopes…

In this paper we present the first results of a detailed spectroscopic and photometric analysis of the V = 11.7m eclipsing binary ASAS J052821+0338.5. With the FIES spectrograph at the Nordic Optical Telescope we have obtained a series of…

Astrophysics · Physics 2009-11-13 H. C. Stempels , L. Hebb , K. G. Stassun , J. Holtzman , N. Dunstone , L. Glowienka , S. Frandsen

This work presents an extensive analysis of the properties of three southern semi-detached eclipsing binaries hosting a pulsating component, namely HM Pup, V632 Sco, and TT Vel. Systematic multi-filtered photometric observations were…

Solar and Stellar Astrophysics · Physics 2022-07-27 A. Liakos , D. J. W. Moriarty , M. G. Blackford , J. F. West , P. Evans , C. M. Moriarty , S. M. Sweet

We present an updated O-C diagram of the light-time variations of the eclipsing binary (component B) in the system QZ Carinae as it moves in the long-period orbit around the non-eclipsing pair (component A). This includes new Variable Stars…

We describe a newly-discovered detached M-dwarf eclipsing binary system, the fourth such system known. This system was first observed by the TrES network during a long term photometry campaign of 54 nights. Analysis of the folded light…

PSR B1259-63/SS 2883 is a binary system in which a 48-ms pulsar orbits around a Be star in a high eccentric orbit with a long orbital period of about 3.4 yr. Extensive broadband observational data are available for this system from radio…

High Energy Astrophysical Phenomena · Physics 2015-05-28 S. W. Kong , Y. W. Yu , Y. F. Huang , K. S. Cheng

PSR B1259-63/SS2883 is a binary system which consists of a 48-ms radio pulsar and a massive star in a highly eccentric orbit with a period of about 3.4 years. Non-pulsed and non-thermal emissions from this binary have been reported in the…

High Energy Astrophysical Phenomena · Physics 2011-11-03 Masaki Mori , Akiko Kawachi , Shigehiro Nagataki , Jumpei Takata

APOGEE spectra offer $\lesssim$1 km s$^{-1}$ precision in the measurement of stellar radial velocities (RVs). This holds even when multiple stars are captured in the same spectrum, as happens most commonly with double-lined spectroscopic…

We present a new study of the Z~Cam-type eclipsing cataclysmic variable AY~Piscium with the aim of determining the fundamental parameters of the system and the structure of the accretion flow therein. We use time-resolved photometric…

Solar and Stellar Astrophysics · Physics 2023-06-13 Jan Kára , Sergey Zharikov , Marek Wolf , Ainash Amantayeva , Gulnur Subebekova , Serik Khokhlov , Aldiyar Agishev , Jaroslav Merc

We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and $\delta$ Scuti-type pulsations with a mode frequency of 21.09533…

BVR light curves and radial velocities for the double-lined eclipsing binary V1135\,Her were obtained. The brighter component of V1135\,Her is a Cepheid variable with a pulsation period of 4.22433$\pm$0.00026 days. The orbital period of the…

Solar and Stellar Astrophysics · Physics 2013-04-23 E. Sipahi , C. Ibanoglu , O. Cakirli , H. A. Dal , S. Evren

The star HD144548 (=HIP~78977; TYP~6212-1273-1) has been known as a detached eclipsing binary and a bona-fide member of the Upper Scorpius OB association. Continuous photometry from the K2 mission on Campaign Two has revealed the presence…

Solar and Stellar Astrophysics · Physics 2015-11-25 R. Alonso , H. J. Deeg , S. Hoyer , N. Lodieu , E. Palle , R. Sanchis-Ojeda