Results 61 to 70 of about 43,328 (216)

Binary stars in the RAVE survey

EPJ Web of Conferences, 2012
We searched the sample of RAVE survey spectra for both types of spectroscopic binary stars in order to estimate their number in the sample and perform a study on newly discovered binaries.
Zwitter T., Matijevič G., Munari U.
doaj   +1 more source

The analysis of SuperWASP photometric data for the overcontact binary QW Gem [PDF]

Serbian Astronomical Journal, 2013
The paper presents an analysis of photometric observations of the eclipsing binary QW Gem. The orbital and physical parameters of the system are derived using the modeling code by G. Djurašević.
Cséki A.
doaj   +1 more source

Transient jets in V617 Sagittarii [PDF]

, 2007
Some of the luminous Compact Binary Supersoft X-Ray sources (CBSS) have shown indications of jets, also called satellites due to their appearance in the spectra.
A. Damineli, A. S. Oliveira, Becker, C. A. O. Torres, Cieslinski, Cowley, Crampton, Deufel, Diaz, Greiner, Hamada, Herbig, Hutchings, J. E. Steiner, McGrath, Motch, Oliveira, Quaintrell, Schandl, Smak, Southwell, Steiner, Steiner, Steiner, Tomov, Trümper, van den Heuvel, van Teeseling, van Teeseling   +28 more
core   +1 more source

Orbits and Dynamical Masses for Six Binary Systems in the Hyades Cluster

The Astrophysical Journal
We report long-baseline interferometric observations with the CHARA Array that resolve six previously known double-lined spectroscopic binary systems in the Hyades cluster, with orbital periods ranging from 3 to 358 days: HD 27483, HD 283882, HD 26874 ...
Guillermo Torres, Gail H. Schaefer, Robert P. Stefanik, David W. Latham, Andrew F. Boden, Narsireddy Anugu, Jeremy W. Jones, Robert Klement, Stefan Kraus, Cyprien Lanthermann, John D. Monnier   +10 more
doaj   +1 more source

The Spectroscopic Binary Characteristics of the Mercury-Manganese Stars

International Astronomical Union Colloquium, 1976
SummaryThe 80 confirmed and suspected mercury manganese stars identified prior to 1974 and north of declination -20° have been studied from 654 high dispersion spectrograms. (2.4 - 15 Å mm-1) for velocity and degree of peculiarity. The binary frequency based on velocity variability criteria alone appears to be a normal main sequence value of about 50%,
openaire   +4 more sources

Spectroscopic Studies of Binary and Multiple Star Systems [PDF]

International Astronomical Union Colloquium, 1992
There can be few subjects that benefit more than binary stars do from complementary approaches. Consider their orbits, for an initial example. By ‘visual’ methods — by which I mean all methods of obtaining angular resolution on the sky, including the modern techniques of optical interferometry — one can determine an orbit, but with the scale known in ...
openaire   +1 more source

Hidden in Plain Sight: Searching for Dark Companions to Bright Stars with the Large Binocular Telescope and SHARK-VIS

The Astrophysical Journal
We report the results from a pilot study to search for black holes and other dark companions in binary systems using direct imaging with SHARK-VIS and the iLocater pathfinder “Lili” on the Large Binocular Telescope.
D. M. Rowan, T. A. Thompson, C. S. Kochanek, G. Li Causi, J. Roth, P. Vaccari, F. Pedichini, R. Piazzesi, S. Antoniucci, V. Testa, M. C. Johnson, J. Crass, J. R. Crepp, A. Bechter, E. B. Bechter, B. L. Sands, R. J. Harris, B. J. Fulton   +17 more
doaj   +1 more source

The Galactic O-Star Spectroscopic Survey (GOSSS). III. 142 additional O-type systems [PDF]

, 2016
This is the third installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R~2500 digital observations selected from the Galactic O-Star Catalog (GOSC).
Alfaro, E. J., Apellániz, J. Maíz, Arias, J. I., Barbá, R. H., Gamen, R. C., Herrero, A., Leão, J. R. S., Marco, A., Negueruela, I., Simón-Díaz, S., Sota, A., Walborn, N. R.   +11 more
core   +4 more sources

WIYN Open Cluster Study. XC. Barium Surface Abundances of Blue Straggler Stars in the Open Clusters NGC 7789 and M67

The Astrophysical Journal
We investigate barium (Ba) abundances in blue straggler stars (BSSs) in two open clusters, NGC 7789 (1.6 Gyr) and M67 (4 Gyr), as signatures of asymptotic-giant-branch (AGB) mass transfer.
Andrew C. Nine, Robert D. Mathieu, Simon C. Schuler, Katelyn E. Milliman   +3 more
doaj   +1 more source

A New Catalog of Am-type Chemically Peculiar Stars Based on LAMOST

The Astrophysical Journal Supplement Series, 2023
A total of about 21,600 Am candidates were detected with the MKCLASS code based on the low-resolution spectra of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Data Releases 8 (v1.0), 9 (v0), and 10 (v0), which greatly expands the database
Xiao-man Tian, Zhi-hua Wang, Li-ying Zhu, Xiao-Ling Yang   +3 more
doaj   +1 more source