Results 81 to 90 of about 43,328 (216)

The White Dwarf Pareto: Tracing Mass Loss in Binary Systems

The Astrophysical Journal
The white dwarf mass distribution has been studied primarily at two extremes: objects that presumably evolved as single stars, and members of close binaries that likely underwent substantial interaction.
Sahar Shahaf
doaj   +1 more source

Panchromatic imaging and spectroscopic observations of the mass ejections of RY Scuti

, 2015
We describe recent panchromatic imaging and spectroscopic studies of the supergiant, mass-transferring, binary star RY Scuti, which is in a brief transitional phase to become a Wolf-Rayet star and a stripped-envelope supernova.Comment: To appear in the ...
Gehrz, Robert D., Shenoy, Dinesh, Smith, Nathan   +2 more
core   +1 more source

The CHARA Array Interferometric Program on the Multiplicity of Classical Be Stars: New Detections and Orbits of Stripped Subdwarf Companions

The Astrophysical Journal
Rapid rotation and nonradial pulsations enable Be stars to build decretion disks, where the characteristic line emission forms. A major but unconstrained fraction of Be stars owe their rapid rotation to mass and angular momentum transfer in a binary. The
Robert Klement, Thomas Rivinius, Douglas R. Gies, Dietrich Baade, Antoine Mérand, John D. Monnier, Gail H. Schaefer, Cyprien Lanthermann, Narsireddy Anugu, Stefan Kraus, Tyler Gardner   +10 more
doaj   +1 more source

Three-dimensional Orbit and Dynamical Masses of GJ 105 AC

The Astrophysical Journal
The precision of stellar models is higher than the precision at which we are able to measure the masses of most stars, with the notable exception of binaries where we can determine dynamical masses of the component stars.
Cayla M. Dedrick, Jason T. Wright, Jason D. Eastman, Cullen H. Blake, Samson A. Johnson, Peter Plavchan, John Asher Johnson, David H. Sliski, Maurice L. Wilson, Robert A. Wittenmyer, Thomas Barclay, Jonathan Horner, Stephen R. Kane, Sharon X. Wang   +13 more
doaj   +1 more source

Spectroscopic Binaries and Collapsed Stars: Part II

, 2018
Fifty years ago, borrowing an idea from our Russian friends Guseinov and Zeldovich, we looked for very compact stars (neutron stars and black holes, in modern terminology) as optically-invisible components of single-line spectroscopic binaries. We didn't find any, but our method was very close to the processes that soon identified neutron stars in the ...
Trimble, Virginia, Thorne, Kip S.
openaire   +2 more sources

Absolute Dimensions of the Interferometric Binary HD 174881: A Test of Stellar Evolution Models for Evolved Stars

The Astrophysical Journal
We report high-resolution spectroscopic monitoring and long-baseline interferometric observations with the Palomar Testbed Interferometer (PTI) of the 215 day binary system HD 174881 (K1 II-III), composed of two giant stars.
Guillermo Torres, Andrew F. Boden, John D. Monnier, Gerard T. van Belle   +3 more
doaj   +1 more source

A Survey of Proper-Motion Stars. XIV. Spectroscopic Binaries among Metal-poor Field Blue Stragglers [PDF]

, 2001
Bruce W. Carney, David W. Latham, John B. Laird, Catherine E. Grant, Jon A. Morse   +4 more
openalex   +3 more sources

Small-scale magnetic fields of the spectroscopic binary T Tauri stars V1878 Ori and V4046 Sgr [PDF]

, 2022
A. Hahlin, O. Kochukhov
openalex   +1 more source

2dF-AAOmega spectroscopy of massive stars in the Magellanic Clouds: The north-eastern region of the Large Magellanic Cloud

, 2015
We present spectral classifications from optical spectroscopy of 263 massive stars in the north-eastern region of the Large Magellanic Cloud. The observed two-degree field includes the massive 30 Doradus star-forming region, the environs of SN1987A, and ...
Bailey, M., Evans, C. J., Hainich, R., van Loon, J. Th.   +3 more
core   +1 more source

Russian Virtual Observatory: Data Sources

Open Astronomy, 2016
The purpose of this review is to analyze main directions of creation and functioning of major data sources developed by Russian astronomers or with their participation and to compare them with the worldwide trends in these fields. We discuss astronomical
Malkov O., Dluzhnevskaya O., Bakanas E., Kilpio E., Kniazev A., Kovaleva D., Mironov A., Pakhomov Yu., Ryabchikova T., Rykhlova L., Sachkov M., Sazonov S., Zhukov A.   +12 more
doaj   +1 more source