Results 71 to 80 of about 58,665 (312)

LTD064402+245919, Compact Binary or Subgiant with Red Star Eclipsing Binary?

Research Notes of the AAS, 2022
Abstract Recently, a single-line spectroscopic binary, LTD064402+245919, has been discovered by Yang et al. Using data from LAMOST and ZTF, the unseen companion is estimated to have a mass of 1–3 M ⊙, orbiting a subgiant with orbital period of 14.50 days, making it a good compact binary candidate without X-ray emission.
Jincheng Guo, Cheng Liu
openaire   +2 more sources

Constraining the Variability and Binary Fraction of Galactic Center Young Stars

, 2016
We present constraints on the variability and binarity of young stars in the central 10 arcseconds (~0.4 pc) of the Milky Way Galactic Center (GC) using Keck Adaptive Optics data over a 12 year baseline.
Chappell, Samantha, Do, Tuan, Gautam, Abhimat K., Ghez, Andrea M., Lu, Jessica R., Morris, Mark R., Sakai, Shoko, Sitarski, Breann N., Witzel, Gunther   +8 more
core   +2 more sources

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
A. Collier Cameron, A. J. Norton, Akerlof, Alekseev, Alekseev, B. Enoch, Bejgman, Boller, Bouvier, Bouvier, Bouvier, Brancewicz, Brelstaff, C. A. Haswell, C. Hellier, Chrastina, Collier Cameron, Collier Cameron, D. J. Christian, D. M. Wilson, D. Pollacco, Deeter, Dempsey, Engle, Evans, Feast, Gershberg, Hall, Hall, Hartmann, I. Skillen, J. Irwin, J. P. Nicholas, Jeffries, K. Horne, Koen, Loomis, M. Gallaway, Meinunger, Monet, N. Parley, Neuhauser, P. J. Wheatley, Pallavicini, Pettersen, Pizzolato, Pribulla, Qian, R. A. Street, R. G. West, R. Ryans, Rosner, S. R. Kane, Schmidt, Schmidt, Selam, Skillen, Stanishev, Strassmeier, T. A. Lister, Tamuz, Turner, Vilhu, W. I. Clarkson, Walter, Wegner, Wheatley, Zhang   +67 more
core   +3 more sources

Calibrating convective-core overshooting with eclipsing binary systems. The case of low-mass main-sequence stars [PDF]

, 2016
In a robust statistical way, we quantify the uncertainty that affects the calibration of the overshooting efficiency parameter $\beta$ that is owing to the uncertainty on the observational data in double-lined eclipsing binary systems.
G. Valle, M. Dell'Omodarme, P. Moroni, S. Degl'innocenti   +3 more
semanticscholar   +1 more source

The Mass and Angular Momentum Relation of Eclipsing Binaries [PDF]

Journal of Astronomy and Space Sciences, 1998
With a total 3780 eclipsing binary system in the Catalogue of Approximate Photometric and Absolute Elements of Eclipsing Variable Stars by Svechnikov & Kuznetsova (1990), the empirical relations between the systemic mass and orbital angular momentum have
Kyu-Dong Oh
doaj  

Quantitative spectroscopy of close binary stars [PDF]

, 2011
The method of spectral disentangling has now created the opportunity for studying the chemical composition in previously inaccessible components of binary and multiple stars.
Brogaard, Clausen, Clausen, Cugier, De Mink, Grundahl, Hadrava, Hadrava, Hadrava, Hareter, Hensberge, Hensberge, Hensberge, J. Southworth, K. Pavlovski, Linder, Lyubimkov, Mahy, Meynet, Mkrtichian, North, Pavlovski, Pavlovski, Pavlovski, Pavlovski, Sarna, Simon, Southworth, Southworth, Tamajo, Tkachenko, Tomkin, Torres, Torres, Wheelwright, Yakut   +35 more
core   +1 more source

A catalogue of temperatures for Kepler eclipsing binary stars [PDF]

, 2013
We have combined the Kepler Eclipsing Binary Catalogue with information from the HES, KIS and 2MASS photometric surveys to produce spectral energy distribution fits to over 2600 eclipsing binaries in the catalogue over a wavelength range of 0.36–2.16 A ...
David J Armstrong, Y. G. M. Chew, F. Faedi, D. Pollacco   +3 more
semanticscholar   +1 more source

SDSS J0926+3624: The shortest period eclipsing binary star [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
Accepted for publication in MNRAS. 19 pages, including 15 figures and 6 tables.
Copperwheat, C.M., Marsh, T.R., Littlefair, S.P., Dhillon, V.S., Ramsay, G., Drake, A.J., Gänsicke, B.T., Groot, P.J., Hakala, P., Koester, D., Nelemans, G., Roelofs, G., Southworth, J., Steeghs, D., Tulloch, S.   +14 more
openaire   +5 more sources

Testing convection in stellar models using detached eclipsing binaries [PDF]

, 2006
The fundamental properties of detached eclipsing binary stars can be measured very accurately, which could make them important objects for constraining the treatment of convection in theoretical stellar models.
Andersen, Hans Bruntt, John Southworth, Lebreton, Ludwig, Maeder, Meynet, Nordström, Southworth, Southworth, Southworth   +10 more
core   +4 more sources

KEPLER ECLIPSING BINARY STARS. IV. PRECISE ECLIPSE TIMES FOR CLOSE BINARIES AND IDENTIFICATION OF CANDIDATE THREE-BODY SYSTEMS [PDF]

, 2013
We present a catalog of precise eclipse times and analysis of third-body signals among 1279 close binaries in the latest Kepler Eclipsing Binary Catalog.
K. Conroy, A. Prša, K. Stassun, J. Orosz, D. Fabrycky, W. Welsh   +5 more
semanticscholar   +1 more source