Results 51 to 60 of about 96,398 (314)

A Spectroscopic Survey for Binary Stars in the Globular Cluster NGC 5053 [PDF]

The Astronomical Journal, 1996
We carried out a radial velocity survey for spectroscopic binaries in the low density globular cluster NGC5053. Our sample contains a total of 77 cluster member giant and subgiant stars with visual magnitudes of 14.5-18.6. Of these 77 stars, 66 stars have on average of 3-4 measurements with a total of 236 velocities.
Yan, Lin, Cohen, J. G.
openaire   +6 more sources

The IACOB project. VI. On the elusive detection of massive O-type stars close to the ZAMS

, 2020
The apparent lack of massive O-type stars near the zero-age main sequence (at ages < 2 Myr) is a topic widely discussed. Different explanations for this elusive detection have been proposed, but no firm conclusions have been reached yet. We reassess this
Arias, J. I., Barbá, R. H., Castro, N., Cerviño, M., Haemmerlé, L., Herrero, A., Holgado, G., Lennon, D. J., Meynet, G., Simón-Díaz, S.   +9 more
core   +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

Observations of Binary Stars with the Differential Speckle Survey Instrument. IX. Observations of Known and Suspected Binaries, and a Partial Survey of Be Stars [PDF]

Astronomical Journal, 2020
We report 370 measures of 170 components of binary and multiple-star systems, obtained from speckle imaging observations made with the Differential Speckle Survey Instrument at Lowell Observatory’s Discovery Channel Telescope in 2015 through 2017. Of the
E. Horch, G. V. van Belle, James W. Davidson, D. Willmarth, F. Fekel, M. Muterspaugh, D. Casetti-Dinescu, F. W. Hahne, Nicole M. Granucci, C. Clark, J. Winters, Justin D. Rupert, Samuel A. Weiss, N. Colton, D. Nusdeo, T. Henry   +15 more
semanticscholar   +1 more source

Velocity Curve Analysis of the Spectroscopic Binary Stars V373 Cas, V2388 Oph, V401 Cyg, GM Dra, V523 Cas, AB And, and HD 141929 by Artificial Neural Networks

, 2009
We used an Artificial Neural Network (ANN) to derive the orbital parameters of spectroscopic binary stars. Using measured radial velocity data of seven double-lined spectroscopic binary systems V373 Cas, V2388 Oph, V401 Cyg, GM Dra, V523 Cas, AB And, and
Bazarghan, Carrier, Hill, K. Ghaderi, K. Karami, Karami, Karami, Karami, Karami, Karami, Lehmann-Filhés, M. M. Soltanzadeh, Petrie, R. Mohebi, R. Sadeghi, Smart   +15 more
core   +1 more source

Close Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color–Magnitude Diagram [PDF]

Astrophysical Journal, 2020
Many problems in contemporary astrophysics—from understanding the formation of black holes to untangling the chemical evolution of galaxies—rely on knowledge about binary stars.
A. Price-Whelan, D. Hogg, H. Rix, R. Beaton, H. Lewis, D. Nidever, Andres Almeida, C. Badenes, R. Barbá, T. Beers, J. Carlberg, Nathan De Lee, J. Fernández-Trincado, P. Frinchaboy, D. A. Garc'ia-Hern'andez, P. Green, S. Hasselquist, P. Longa-Peña, S. Majewski, C. Nitschelm, J. Sobeck, K. Stassun, G. Stringfellow, N. Troup   +23 more
semanticscholar   +1 more source

Searching for Double-line Spectroscopic Binaries in the LAMOST Medium-resolution Spectroscopic Survey with Deep Learning

The Astrophysical Journal Supplement Series, 2023
Double-line spectroscopic binaries (SB2s) are a vital class of spectroscopic binaries for studying star formation and evolution. Searching for SB2s has been a hot topic in astronomy.
Zepeng Zheng, Zhong Cao, Hui Deng, Ying Mei, Lei Tan, Feng Wang   +5 more
doaj   +1 more source

A Spectroscopic Study of Field and Runaway OB Stars

, 2006
Identifying binaries among runaway O- and B-type stars offers valuable insight into the evolution of open clusters and close binary stars. Here we present a spectroscopic investigation of 12 known or suspected binaries among field and runaway OB stars ...
Allen C., Aslanov A. A., Aslanov A. A., Beardsley W. R., Blaauw A., Douglas R. Gies, Erika D. Grundstrom, Keenan F. P., M. Virginia McSwain, Mayer P., Moffat A. F. J., Plaskett J. S., Poveda A., Schaller G., Stickland D. J., Tabetha S. Boyajian, Voges W., Wesselius P. R., Zejnalov S. K.   +18 more
core   +1 more source

WIYN Open Cluster Study. LXXXVII. Hubble Space Telescope Ultraviolet Detection of Hot White Dwarf Companions to Blue Lurkers in M67

The Astrophysical Journal, 2023
We present the results of our Hubble Space Telescope far-ultraviolet survey of the blue lurkers (BLs) in M67. We find evidence for two white dwarf (WD) companions among the BLs that are indicative of mass transfer from an evolved companion, one in WOCS ...
Andrew C. Nine, Robert D. Mathieu, Natalie M. Gosnell, Emily M. Leiner   +3 more
doaj   +1 more source

The Hot R Coronae Borealis Star DY Centauri is a Binary [PDF]

, 2012
The remarkable hot R Coronae Borealis (RCB) star DY Cen is revealed to be the first and only binary system to be found among the RCB stars and their likely relatives, including the extreme helium stars and the hydrogen-deficient carbon stars.
Garcia-Hernandez, D. A., Jeffery, C. Simon, Lambert, David L., McArthur, Barbara, Rao, N. Kameswara, Woolf, Vincent M.   +5 more
core   +2 more sources