Results 111 to 120 of about 1,006,206 (194)

A Catalog of Early-type Runaway Stars from LAMOST DR8

The Astrophysical Journal Supplement Series
Runaway stars are OB-type stars ejected from their birthplace with large peculiar velocities. The leading hypothesis addressed in their formation includes the supernova ejection mechanism and the dynamic ejection scenario.
Yanjun Guo, Luqian Wang, Chao Liu, You Wu, ZhanWen Han, XueFei Chen   +5 more
doaj   +1 more source

Tales of stellar and binary coevolution, told by stellar oscillations

Astronomy & Astrophysics
Context. Red giants are increasingly used as stellar population tracers due to their well-understood evolution and the availability of asteroseismic observables. However, stellar binarity can alter observable properties and introduce strong biases. Aims.
Beck Paul G.
doaj   +1 more source

On the Value of High Precision Radial Velocity Observations and Astrometric Orbits for Binary Stars Hosting Exoplanets

Research Notes of the AAS
Abstract Observations have concluded that exoplanet hosting binary stars appear to have wider mean separations than a definitive sample of “field binaries” as well as an apparent deficit of very close pairs. Many exoplanets orbit near their host stars equatorial plane, especially for close-in, small planets.
openaire   +1 more source

Astrometric Accelerations of Provisional Targets for the Habitable Worlds Observatory

The Astronomical Journal
NASA’s Habitable Worlds Observatory (HWO) will be the first space telescope capable of directly imaging Earth-like planets in the habitable zones (HZs) of Sun-like stars to probe their atmospheres for signs of life.
Katie E. Painter, Brendan P. Bowler, Kyle Franson, Juliette C. Becker, Jennifer A. Burt   +4 more
doaj   +1 more source

Dynamical Masses for the Hyades Binary System vB 120

The Astrophysical Journal
We report spectroscopic observations of vB 120 (HD 30712), a 5.7 yr astrometric–spectroscopic binary system in the Hyades cluster. We combine our radial velocities with others from the literature, and with existing speckle interferometry measurements, to
Guillermo Torres, Robert P. Stefanik, David W. Latham   +2 more
doaj   +1 more source

Orbital motion and dynamical mass of the complex periodic variable binary system 2MASS J05082729–2101444

Astronomy & Astrophysics
Aims. This study focuses on the low-mass binary 2MASS J05082729-2101444 (2M0508-21), one of the few known radio-loud members of the complex periodic variable sample. Our aim is to use very long baseline interferometry to constrain the orbit. Methods.
Curiel S., Ortiz-León G. N., Béjar V. J. S., Viganò D., Girart J. M., Kaur S., Shan Y., Murgas F., Zechmeister M., Amado P. J., Caballero J. A., Henning Th., Ilin E., Montes D., Morales J. C., Morata Ò., Pérez-Torres M., Quirrenbach A., Reiners A., Ribas I., Sánchez-Monge Á., Schweitzer A., Vico Linares J. I., Zapatero Osorio M. R.   +23 more
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Astrometric search for extrasolar planets in stellar multiple systems [PDF]

, 2011
Taking our own solar system as an archetype, most exoplanet search programs are concentrated on single and solar like stars. However, it is an accepted estimation that about the half of all stars are a member of a stellar multiple systems, but the ...
Röll, Tristan Alexander
core  

Astrometric detection of Neutron Star Companions to High Mass X-ray Binaries [PDF]

Proceedings of the International Astronomical Union, 2005
C. Ó Maoiléidigh, E. J. A. Meurs, L. Norci   +2 more
openaire   +1 more source

Ongoing astrometric microlensing events of two nearby stars

, 2018
Context. Astrometric microlensing is an excellent tool to determine the mass of stellar objects. By measuring the astrometric shift of a background source star in combination with precise predictions of its unlensed position and of the lens position ...
J. Wambsganss, J. Klüter, U. Bastian, M. Demleitner   +3 more
core   +1 more source

Formation of Be Stars via Wind Accretion: Case Study on Black Hole + Be Star Binaries

The Astrophysical Journal Letters
Be stars are rapidly rotating main-sequence stars that play a crucial role in understanding stellar evolution and binary interactions. In this Letter, we propose a new formation scenario for black hole (BH) + Be star binaries (hereafter BHBe binaries ...
Zhenwei Li, Shi Jia, Dandan Wei, Hongwei Ge, Hailiang Chen, Yangyang Zhang, Xuefei Chen, Zhanwen Han   +7 more
doaj   +1 more source