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We have identified three K2 transiting star-planet systems, K2-51 (EPIC 202900527), K2-67 (EPIC 206155547), and K2-76 (EPIC 206432863), as stellar binaries with low-mass stellar secondaries. The three systems were statistically validated as…

We present a homogeneously-selected sample of 15779 candidate binary systems with main sequence primary stars and orbital periods shorter than 5 days. The targets were selected from TESS full-frame image lightcurves on the basis of their…

太阳与恒星天体物理 · 物理学 2023-07-03 Matthew J. Green , Dan Maoz , Tsevi Mazeh , Simchon Faigler , Sahar Shahaf , Roy Gomel , Kareem El-Badry , Hans-Walter Rix

The Kepler mission has provided high quality light curves for more than 2000 eclipsing binaries. Tertiary companions to these binaries can be detected if they transit one or both stars in the binary or if they perturb the binary enough to…

太阳与恒星天体物理 · 物理学 2015-03-26 Jerome A. Orosz

Variability of the spin period of the white dwarf in the V405 Aur (RX J0558.0+5353) system using our observations and previously published maxima timings is analyzed. As the phase light curve contains two nearly equal photometric waves, one…

We present new long-term CCD photometry for EP And acquired during the period 2007 to 2012. The light curves display total eclipses at primary minima and season-to-season light variability. Our synthesis for all available light curves…

太阳与恒星天体物理 · 物理学 2015-06-12 Jae Woo Lee , Tobias Cornelius Hinse , Jang-Ho Park

We announce the detection of two new planetary-mass companions around Kepler-451 binary system in addition to the one detected previously based on eclipse timing variation analysis. We found that an inner planet with 43 d period with a…

地球与行星天体物理 · 物理学 2022-11-02 Ekrem Murat Esmer , Özgür Baştürk , Selim Osman Selam , Sinan Aliş

New and previously published observations of the bright eclipsing binary VV Orionis are analyzed. We present new radial velocities and interstellar reddening measurements from high-resolution spectra of this detached, short-period (P=1.48…

天体物理学 · 物理学 2008-11-26 Dirk Terrell , Ulisse Munari , Alessandro Siviero

We derive absolute dimensions of the early B-type detached eclipsing binary V453 Cygni (B0.4 IV + B0.7 IV, P=3.89d), a member of the open cluster NGC 6871. From the analysis of new, high-resolution, spectroscopy and the UBV light curves of…

天体物理学 · 物理学 2009-11-10 J. Southworth , P. F. L. Maxted , B. Smalley

Pulsar timing observations have revealed companions to neutron stars that include other neutron stars, white dwarfs, main-sequence stars, and planets. We demonstrate that the correlated and apparently stochastic residual times of arrival…

We produce and analyze eclipse time variation (ETV) curves for some 2600 Kepler binaries. We find good to excellent evidence for a third body in 222 systems via either the light-travel-time (LTTE) or dynamical effect delays. Approximately…

太阳与恒星天体物理 · 物理学 2015-12-16 T. Borkovits , T. Hajdu , J. Sztakovics , S. Rappaport , A. Levine , I. B. Bíró , P. Klagyivik

The systems V949 Cen, V358 Pup, and V1055 Sco are triples comprised of an eclipsing binary orbiting with a distant visual component on a much longer orbit. The first detailed photometric analysis of these interesting systems was performed…

太阳与恒星天体物理 · 物理学 2015-07-28 P. Zasche , K. Honkova , J. Jurysek , M. Masek

Aims: New CCD observations for semidetached and detached eclipsing binaries from the Large Magellanic Cloud were carried out using the Danish 1.54-m telescope located at the La Silla Observatory in Chile. The selected systems were monitored…

太阳与恒星天体物理 · 物理学 2016-05-25 P. Zasche , M. Wolf , J. Vrastil , L. Pilarcik , J. Jurysek

XTE J1710-281 is a transient eclipsing binary system with a period close to 3.28 hours, hosting a neutron star. The average eclipse duration is 420 seconds, and eclipse arrival times reported in the literature span from 1999 to 2017. A…

高能天体物理现象 · 物理学 2024-06-19 R. Iaria , T. Di Salvo , A. Anitra , C. Miceli , W. Leone , C. Maraventano , F. Barra , A. Riggio , A. Sanna , A. Manca , L. Burderi

The source X 1822-371 is an eclipsing compact binary system with a period close to 5.57 hr and an orbital period derivative $\dot{P}_{\rm orb}$ of 1.51(7)$\times 10^{-10}$ s s$^{-1}$. The very large value of $\dot{P}_{\rm orb}$ is…

高能天体物理现象 · 物理学 2019-05-22 S. M. Mazzola , R. Iaria , T. Di Salvo , A. F. Gambino , A. Marino , L. Burderi , A. Sanna , A. Riggio , M. Tailo

In an effort to determine accurate orbital and physical properties of a large number of bright stars, a method was developed to fit simultaneously stellar parameters (masses, luminosities, effective temperatures), distance, and orbits to…

太阳与恒星天体物理 · 物理学 2024-10-21 Dinko Nazor , Andrei Tokovinin

LS 5039 is one of a handful of $\gamma$-ray binary systems in the Milky Way, comprising a pulsar and a massive O-type companion star with an orbital period of 3.9 day. Recently, we conducted a data analysis using approximately 16 year of…

高能天体物理现象 · 物理学 2024-09-17 Lujun Zeng , Mengqing Zhang , Chongyang Ren , Pengfei Zhang , Jingzhi Yan

Close, compact, hierarchical, multiple stellar systems, i.e., multiples having an outer orbital period from months to a few years, comprise a small, but continuously growing group of the triple and multiple star zoo. Many of them consist of…

太阳与恒星天体物理 · 物理学 2022-01-05 Tamás Borkovits

Twenty-one eclipsing binaries were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. The photometric data were processed and analyzed, resulting in a first light-curve study of these neglected…

太阳与恒星天体物理 · 物理学 2011-02-15 P. Zasche

By using available archival X-ray data, we significantly extended the list of times of X-ray minima. The new list includes 65 data points obtained by critically re-analyzing RXTE ASM data, 88 data points based on observations by MAXI, and…

高能天体物理现象 · 物理学 2019-02-07 Igor I. Antokhin , Anatol M. Cherepashchuk

We report eclipse timing variation analyses of 26 compact hierarchical triple stars comprised of an eccentric eclipsing ('inner') binary and a relatively close tertiary component found in the {\em Kepler} field. We simultaneously fit the…

太阳与恒星天体物理 · 物理学 2015-06-23 Tamas Borkovits , Saul Rappaport , Tamas Hajdu , Janos Sztakovics