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In close eclipsing binaries, measurements of the variations in binary's eclipse timing may be used to infer information about the existence of circumbinary objects. To determine the possibility of the detection of such variations with CoRoT…

Earth and Planetary Astrophysics · Physics 2015-05-27 R. Schwarz , N. Haghighipour , S. Eggl , E. Pilat-Lohinger , B. Funk

We present the analysis of the CoRoT star 105288363, a new Blazhko RR Lyrae star of type RRab (f0 = 1.7623 c/d), observed with the CoRoT space craft during the second long run in direction of the galactic center (LRc02, time base 145 d).…

Solar and Stellar Astrophysics · Physics 2016-08-14 E. Guggenberger , K. Kolenberg , E. Chapellier , E. Poretti , R. Szabó , J. M. Benkő , M. Paparó

We analyze the surface structure of the planet host star CoRoT-2a using a consistent model for both the `global' (i.e., rotationally modulated) lightcurve and the transit lightcurves, using data provided by the CoRoT mission. Selecting a…

Solar and Stellar Astrophysics · Physics 2015-05-14 K. F. Huber , S. Czesla , U. Wolter , J. H. M. M. Schmitt

Eclipsing binaries (EBs) are unique targets for measuring precise stellar properties and constrain stellar evolution models. In particular, it is possible to measure at the percent level masses and radii of both components of a double-lined…

Solar and Stellar Astrophysics · Physics 2020-01-08 Patrick Gaulme , Joyce A. Guzik

We searched for eclipses of two millisecond pulsars, PSR J1807-2459 and PSR B1908+00. These pulsars are in very low mass binary systems with orbital parameters similar to those of eclipsing binaries. Observations were made with the GBT at…

Astrophysics · Physics 2007-05-23 David J. Nice , Ingrid H. Stairs , Zaven Arzoumanian

We present a comprehensive photometric and spectroscopic analysis of the Algol-type binary \textit{Gaia} DR3 1892576067672499328. We identified the system as a spectroscopic binary based on medium-resolution LAMOST spectra. Combined with…

The present work concerns the Asteroseismology of the Kepler detached eclipsing binary KIC 8504570. Particularly, it focuses on the pulsational behaviour of the oscillating component of this system and the estimation of its physical…

Solar and Stellar Astrophysics · Physics 2020-10-21 Alexios Liakos , Panagiotis Niarchos

We present the first full orbital and physical analysis of HD 187669, recognized by the All-Sky Automated Survey (ASAS) as the eclipsing binary ASAS J195222-3233.7. We combined multi-band photometry from the ASAS and SuperWASP public…

The late B-type star V772 Cas (HD 10260) was previously suspected to be a rare example of a magnetic chemically peculiar star in an eclipsing binary system. Photometric observations of this star obtained by the TESS satellite show clear…

Solar and Stellar Astrophysics · Physics 2020-11-18 O. Kochukhov , C. Johnston , J. Labadie-Bartz , S. Shetye , T. A. Ryabchikova , A. Tkachenko , M. E. Shultz

We report the discovery of the first high-amplitude delta Scuti star in an eclipsing binary, which we have designated UNSW-V-500. The system is an Algol-type semi-detached eclipsing binary of maximum brightness V = 12.52 mag. A best-fitting…

This research paper has light curve modelling, spectroscopy, and detailed asteroseismic studies for five detached eclipsing binaries with a $\gamma$ Dor component that have been found so far by the sky surveys. The objective is to study the…

Solar and Stellar Astrophysics · Physics 2025-02-25 O. Cakirli , B. Hoyman , O. Ozdarcan , S. Bilir

We present the first measurement of pulse scattering close to the eclipse region of PSR B1957+20, which is in a compact binary system with a low-mass star. We measured pulse scattering time-scales up to 0.2 ms close to the eclipse and…

High Energy Astrophysical Phenomena · Physics 2022-04-20 J. T. Bai , S. Dai , Q. J. Zhi , W. A. Coles , D. Li , W. W. Zhu , G. Hobbs , G. J. Qiao , N. Wang , J. P. Yuan , M. D. Filipovic , J. B. Wang , Z. C. Pan , L. H. Shang , S. J. Dang , S. Q. Wang , C. C. Miao

We describe the discovery of a 0.68+0.52 solar mass eclipsing binary (EB) with an 8.4-day orbital period, found through a systematic search of ten fields of the Trans-atlantic Exoplanet Survey (TrES). Such long-period low-mass EBs…

KIC 3230227 is a short period ($P\approx 7.0$ days) eclipsing binary with a very eccentric orbit ($e=0.6$). From combined analysis of radial velocities and {\it Kepler} light curves, this system is found to be composed of two A-type stars,…

Solar and Stellar Astrophysics · Physics 2017-01-11 Zhao Guo , Douglas R. Gies , Jim Fuller

We present the analysis of the time series observations of CoRoT\,102699796 obtained by the CoRoT satellite that show the presence of five independent oscillation frequencies in the range 3.6-5 c/d. Using spectra acquired with FLAMES@VLT,…

Solar and Stellar Astrophysics · Physics 2015-05-28 V. Ripepi , F. Cusano , M. Di Criscienzo , G. Catanzaro , F. Palla , M. Marconi , P. Ventura , C. Neiner , C. Catala , S. Bernabei

We present the characterization of KIC 4142768, an eclipsing binary with two evolved A-type stars in an eccentric orbit with a period of 14 days. We measure the fundamental parameters of the two components ($M_1=2.05M_{\odot},…

Solar and Stellar Astrophysics · Physics 2020-01-08 Zhao Guo , Jim Fuller , Avi Shporer , Gang Li , Kelly Hambleton , Joseph Manuel , Simon Murphy , Howard Isaacson

We aim to identify and characterize secondary eclipses in the original light curves of all published CoRoT planets using uniform detection and evaluation critetia. Our analysis is based on a Bayesian model selection between two competing…

Earth and Planetary Astrophysics · Physics 2015-06-12 Hannu Parviainen , Hans Deeg , Juan Antonio Belmonte

A new magnetic, eclipsing cataclysmic variable is identified as the counterpart of the X-ray source RX J0719.2+6557 detected during the ROSAT all-sky survey. The relative phasing of photometric and spectroscopic periods indicates a…

Astrophysics · Physics 2007-05-23 G. Tovmassian , J. Greiner , F. -J. Zickgraf , P. Kroll , J. Krautter , I. Thiering , A. Serrano

The low mass X-ray binary 2A 1822-371 is an eclipsing system with an accretion disc corona and with an orbital period of 5.57 hr. The primary is an 0.59 s X-ray pulsar with a proposed strong magnetic field of 10^10-10^12 G. In this paper we…

High Energy Astrophysical Phenomena · Physics 2017-04-12 A. Bak Nielsen , A. Patruno , C. D'Angelo

We report on analysis of the two-color VR CCD observations of the newly discovered variable 2MASS J18024395+4003309=VSX J180243.9+400331 obtained using the 1-m telescope of the Mt. Lemmon Observatory (LOAO) in the field of the intermediate…

Solar and Stellar Astrophysics · Physics 2015-12-15 Ivan L. Andronov , Yonggi Kim , Young-Hee Kim , Joh-Na Yoon , Lidia L. Chinarova , Mariia G. Tkachenko