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From optical photometry we show that SDSSJ121258.25-012310.1 is a new eclipsing, post common-envelope binary with an orbital period of 8.06 hours and an eclipse length of 23 minutes. We observed the object over 11 nights in different bands…

We present the visual orbit of the double-lined spectroscopic binary HD 224355 from interferometric observations with the CHARA Array, as well as an updated spectroscopic analysis using echelle spectra from the Apache Point Observatory 3.5m…

The young nearby solar-type star HD 91962 is a rare quadruple system where three companions revolve around the main component with periods of 170.3 days, 8.85 years, and 205 years. The two outer orbits are nearly co-planar, and all orbits…

Solar and Stellar Astrophysics · Physics 2015-05-27 Andrei Tokovinin , David W. Latham , Brian D. Mason

We present an extensive set of photometry and radial velocities for the detached eclipsing binary KV 29 in the intermediate-aged open cluster M11 (NGC 6705). Spectroscopy shows that the system is double-lined and all available evidence…

Solar and Stellar Astrophysics · Physics 2016-08-19 Ernest A. Bavarsad , Eric L. Sandquist , Matthew D. Shetrone , Jerome A. Orosz

V1388 Ori is an early-B type detached eclipsing binary whose physical properties have previously been measured from dedicated spectroscopy and a ground-based survey light curve. We reconsider the properties of the system using…

Solar and Stellar Astrophysics · Physics 2022-05-19 John Southworth , Dominic M. Bowman

We study the O-type star HD 161853, which has been noted as a probable double-lined spectroscopic binary system. We secured high-resolution spectra of HD 161853 during the past nine years. We separated the two components in the system and…

Solar and Stellar Astrophysics · Physics 2015-11-18 R. Gamen , C. Putkuri , N. I. Morrell , R. H. Barbá , J. I. Arias , J. Maíz Apellániz , N. R. Walborn , A. Sota , E. J. Alfaro

We present a study of eclipsing binary J064726.39+223431.6 using spectra from the LAMOST-MRS and TESS photometry. We use full-spectrum fitting to derive radial velocities and spectral parameters: ${T_{\rm eff}}_{A,B}=6177,\,5820$ K, $v…

Solar and Stellar Astrophysics · Physics 2022-12-20 Mikhail Kovalev , Song Wang , Xuefei Chen , Zhanwen Han

We revisit various sets of published results from X-ray and optical studies of the Galactic black hole (BH) candidate MAXI J0637-430, which went into outburst in 2019. Combining the previously reported values of peak outburst luminosity,…

High Energy Astrophysical Phenomena · Physics 2022-07-20 Roberto Soria , Ruican Ma , Lian Tao , Shuang-Nan Zhang

Eclipsing binary systems hold a central position within astrophysics in that the fundamental parameters of stars can be determined by direct observations. The simultaneous analyses of high-quality space observations, combined with…

Solar and Stellar Astrophysics · Physics 2023-10-25 Neslihan Alan

We aim at measuring the stellar parameters of the two Chemically Peculiar components of the B9.5Vp HgMn + A2 Vm double-lined spectroscopic binary HD141556, whose period is 15.25 days. We combined historical radial velocity measurements with…

Solar and Stellar Astrophysics · Physics 2015-06-15 Jean-Baptiste Le Bouquin , Herve Beust , Gilles Duvert , Jean-Philippe Berger , F. Menard , G. Zins

We present the results of a spectroscopic and photometric analysis of HD314884, a slowly pulsating B star (SPB) in a binary system with detected soft X-ray emission. We spectrally classify the B star as a B5V-B6V star with T$_{eff}$ =…

Solar and Stellar Astrophysics · Physics 2015-06-22 Christopher B. Johnson , R. I. Hynes , T. Maccarone , C T. Britt , H. Davis , P. G. Jonker , M. A. P. Torres , D. Steeghs , S. Greiss , G. Nelemans

We present photometric observations in B and V as well as spectroscopic observations of the detached, eccentric 6.6-day double-lined eclipsing binary GG Ori, a member of the Orion OB1 association. Absolute dimensions of the components,…

Astrophysics · Physics 2009-10-31 G. Torres , C. H. S. Lacy , A. Claret , J. A. Sabby

We used very long baseline interferometry to constrain the orbit of the binary system 2MASS J05082729-2101444. We observed the system with the VLBA in three epochs at a frequency of 4.85 GHz, which provides an angular resolution of about 3…

HD 45166 was selected as a candidate to the V Sagittae Class. It's spectrum shows quite narrow emission lines of He, C, N, and O, possibly indicating a low inclination for the binary system. We performed high resolution and high stability…

Astrophysics · Physics 2007-05-23 Alexandre S. Oliveira , J. E. Steiner

KIC 7177553 is a quadruple system containing two binaries of orbital periods 16.5 and 18 d. All components have comparable masses and are slowly rotating, non-evolved stars of spectral type near G2V. The longer period binary is eclipsing…

Solar and Stellar Astrophysics · Physics 2017-01-11 James MacDonald , D. J. Mullan

We report the discovery of a new detached eclipsing binary known as NSVS01031772 with component masses M_1= 0.5428 +/- 0.0027Msun, M_2= 0.4982 +/- 0.0025Msun, and radii R_1= 0.5260 +/- 0.0028Rsun, R_2= 0.5088 +/- 0.0030Rsun. The system has…

We report high-resolution spectroscopic observations of the young star HD 34700, which confirm it to be a double-lined spectroscopic binary. We derive an accurate orbital solution with a period of 23.4877 +/- 0.0013 days and an eccentricity…

Astrophysics · Physics 2009-11-10 Guillermo Torres

We report on a three year spectroscopic monitoring program of the H-alpha emission in the massive X-ray binary LS I +65 010 = 2S 0114+650, which consists of a B-supergiant and a slowly rotating X-ray pulsar. We present revised orbital…

[abridged] We report four years of radial velocity monitoring observations of SDSS J080531.84+481233.0 that reveal significant and periodic variability, confirming the binary nature of the source. We infer an orbital period of 2.02$\pm$0.03…

Solar and Stellar Astrophysics · Physics 2016-08-17 Adam J. Burgasser , Cullen H. Blake , Christopher R. Gelino , Johannes Sahlmann , Daniella Bardalez Gagliuffi

V1765 Cyg is a detached eclipsing binary containing a B0.5 supergiant and a B1 main-sequence star, with an orbital period of 13.37 d and an eccentricity of 0.315. The system shows apsidal motion and the supergiant exhibits strong stochastic…

Solar and Stellar Astrophysics · Physics 2023-11-02 John Southworth