Results 11 to 20 of about 127,440 (200)

The origin of very wide binary systems [PDF]

, 2009
The majority of stars in the Galactic field and halo are part of binary or multiple systems. A significant fraction of these systems have orbital separations in excess of thousands of astronomical units, and systems wider than a parsec have been ...
Bastian, D. Malmberg, de Grijs, Duquennoy, Goodwin, Kouwenhoven, Kouwenhoven, Kouwenhoven, M. B. Davies, M. B. N. Kouwenhoven, Mengel, P. Kroupa, Richard J. Parker, S. P. Goodwin   +13 more
core   +3 more sources

Unusually Wide Binaries: Are They Wide or Unusual? [PDF]

, 2009
We describe an astrometric and spectroscopic campaign to confirm the youth and association of a complete sample of candidate wide companions in Taurus and Upper Sco.
Adam L. Kraus, Adams, Ahmic, Ardila, Artigau, Baraffe, Boden, Bouy, Briceno, Burgasser, Cameron, Cameron, Carpenter, Chabrier, Close, Close, de Zeeuw, Dhital, Duchene, Duquennoy, Durisen, Epchtein, Furlan, Ghez, Hartigan, Hillenbrand, Hillenbrand, Itoh, Kraus, Kraus, Kraus, Kraus, Kraus, Kunkel, Köhler, Leggett, Leinert, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Lynne A. Hillenbrand, Martín, Martín, Massarotti, Metchev, Monet, Padgett, Patience, Peebles, Prato, Prato, Prato, Preibisch, Preibisch, Preibisch, Radigan, Reid, Reipurth, Salim, Scalo, Schaefer, Schlegel, Scholz, Simon, Simon, Sirianni, Skrutskie, Slesnick, Slesnick, Slesnick, Stapelfeldt, Steffen, Torres, White, White, White, Wing, Zuckerman   +83 more
core   +2 more sources

Carbon-enhanced metal-poor stars: a window on AGB nucleosynthesis and binary evolution. II. Statistical analysis of a sample of 67 CEMP-$s$ stars [PDF]

, 2015
Many observed CEMP stars are found in binary systems and show enhanced abundances of $s$-elements. The origin of the chemical abundances of these CEMP-$s$ stars is believed to be accretion in the past of enriched material from a primary star in the AGB ...
Abate, C., Izzard, R. G., Karakas, A. I., Pols, O. R.   +3 more
core   +2 more sources

Erratum: Testing gravity with wide binary stars like α Centauri [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
Peer ...
Indranil Banik, Hongsheng Zhao
openaire   +4 more sources

A wide star–black-hole binary system from radial-velocity measurements [PDF]

Nature, 2019
All stellar mass black holes have hitherto been identified by X-rays emitted by gas that is accreting onto the black hole from a companion star. These systems are all binaries with black holes below 30 M$_{\odot}$$^{1-4}$. Theory predicts, however, that X-ray emitting systems form a minority of the total population of star-black hole binaries$^{5,6 ...
Liu, Jifeng, Zhang, Haotong, Howard, Andrew W., Bai, Zhongrui, Lu, Youjun, Soria, Roberto, Justham, Stephen, Li, Xiangdong, Zheng, Zheng, Wang, Tinggui, Belczynski, Krzysztof, Casares, Jorge, Zhang, Wei, Yuan, Hailong, Dong, Yiqiao, Lei, Yajuan, Isaacson, Howard, Wang, Song, Bai, Yu, Shao, Yong, Gao, Qing, Wang, Yilun, Niu, Zexi, Cui, Kaiming, Zheng, Chuanjie, Mu, Xiaoyong, Zhang, Lan, Wang, Wei, Heger, Alexander, Qi, Zhaoxiang, Liao, Shilong, Lattanzi, Mario, Gu, Wei-Min, Wang, Junfeng, Wu, Jianfeng, Shao, Lijing, Shen, Rongfeng, Wang, Xiaofeng, Bregman, Joel, Di Stefano, Rosanne, Liu, Qingzhong, Han, Zhanwen, Zhang, Tianmeng, Wang, Huijuan, Ren, Juanjuan, Zhang, Junbo, Zhang, Jujia, Wang, Xiaoli, Cabrera-Lavers, Antonio, Corradi, Romano, Rebolo, Rafael, Zhao, Yongheng, Zhao, Gang, Chu, Yaoquan, Cui, Xiangqun   +54 more
openaire   +5 more sources

Stability criteria for wide binary stars harboring Oort Clouds [PDF]

Astronomy & Astrophysics, 2018
Context. In recent years, several numerical studies have been done in the field of the stability limit. Although, many of them included the analysis of asteroids or planets, is not possible to find in the literature any work on how the presence of a binary star could affect other possible configurations in a three-body problem. In order to develop this
Calandra, Maria Florencia, Correa Otto, Jorge Alfredo, Gil Hutton, Ricardo Alfredo   +2 more
openaire   +2 more sources

The distribution of wide binary stars on the sky [PDF]

Monthly Notices of the Royal Astronomical Society, 1989
Etude de la distribution de binaires larges de brillance intermediaire dans plusieurs champs des Poles Galactiques Nord et Sud totalisant environ 800 deg 2 . Une variete de tests statistiques est appliquee pour montrer que ces binaires ne sont pas distribuees selon une loi de Poisson, mais qu'une structure significative est apparente dans la ...
Sirpa Saarinen, Gerard Gilmore
openaire   +1 more source

A Catalogue of Nearby Wide Binary and Multiple Stars [PDF]

International Astronomical Union Colloquium, 1992
AbstractNo modern catalogue of wide binary and multiple systems (WBMS) exists for the region of the solar vicinity (stars nearer than ~22 pc), that include updated information on their membership to moving clusters and an age classification. With the aim of filling this gap, and also because of its importance for investigating the dynamical evolution ...
A. Poveda, M.A. Herrera, C. Allen, G. Cordero, C. Lavalley   +4 more
openaire   +1 more source

Statistical Modeling and Analysis of Wide Binary Star Systems [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractPost-main-sequence (MS) mass loss causes orbital separation amplification in fragile (i.e. common proper motion) binary star systems. Components typically have separations around ∼1000 AU. Such wide pairs experience negligible tidal interactions and mass transfer between companions; thus they evolve as two separate but coeval stars.
K.B. Johnston, T.D. Oswalt, D. Valls-Gabaud   +2 more
openaire   +1 more source

Mapping the Shores of the Brown Dwarf Desert II: Multiple Star Formation in Taurus-Auriga [PDF]

, 2011
We have conducted a high-resolution imaging study of the Taurus-Auriga star-forming region in order to characterize the primordial outcome of multiple star formation and the extent of the brown dwarf desert. Our survey identified 16 new binary companions
Adam L. Kraus, Allen, Baraffe, Boden, Bodenheimer, Bonnell, Bonnell, Bonnor, Boss, Bouvier, Bouy, Briceño, Briceño, Briceño, Burgasser, Burgasser, Carpenter, Chabrier, Chiang, Close, Connelley, D'Antona, Duchêne, Duchêne, Duchêne, Duquennoy, Enoch, Fortney, Frantz Martinache, Furlan, Ghez, Ghez, Goldsmith, Grether, Haisch, Hanawa, Hartigan, Hillenbrand, Ida, Ireland, Ireland, Itoh, Jensen, Kenyon, Konopacky, Kraus, Kraus, Kraus, Kraus, Kraus, Kraus, Kraus, Köhler, Königl, Lada, Law, Leinert, Lin, Lloyd, Loinard, Looney, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Luhman, Lynne A. Hillenbrand, Marley, Martinache, Martinache, Martín, Massarotti, Matt, Matzner, Metchev, Michael J. Ireland, Nguyen, Ochi, Offner, Patience, Prato, Prato, Raghavan, Rebull, Rebull, Reid, Reipurth, Reipurth, Richichi, Sartoretti, Schaefer, Schmidt-Kaler, Scholz, Shakura, Shu, Simon, Slesnick, Stamatellos, Stapelfeldt, Steffen, Tobin, Tokovinin, Torres, Torres, Ward-Thompson, White, White, White, White, White, Woitas, Zacharias   +114 more
core   +3 more sources