中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 国家天文台
  3. 中国科学院国家天文台
Discovery and characterization of 3000+main-sequence binaries from APOGEE spectra

文献类型：期刊论文

作者El-Badry, Kareem1,2,3; Ting, Yuan-Sen4,5,6,7; Rix, Hans-Walter3; Quataert, Eliot1,2; Weisz, Daniel R.1,2; Cargile, Phillip8; Conroy, Charlie8; Hogg, David W.3,9,10,11; Bergemann, Maria3; Liu, Chao10,12
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018-05-01
卷号476期号:1页码:528-553
关键词methods: data analysis binaries: spectroscopic Galaxy: stellar content
ISSN号0035-8711
DOI10.1093/mnras/sty240
英文摘要We develop a data-driven spectral model for identifying and characterizing spatially unresolved multiple-star systems and apply it to APOGEE DR13 spectra of main-sequence stars. Binaries and triples are identified as targets whose spectra can be significantly better fit by a superposition of two or three model spectra, drawn from the same isochrone, than any single-star model. From an initial sample of similar to 20 000 main-sequence targets, we identify similar to 2500 binaries in which both the primary and secondary stars contribute detectably to the spectrum, simultaneously fitting for the velocities and stellar parameters of both components. We additionally identify and fit similar to 200 triple systems, as well as similar to 700 velocity-variable systems in which the secondary does not contribute detectably to the spectrum. Our model simplifies the process of simultaneously fitting single-or multi-epoch spectra with composite models and does not depend on a velocity offset between the two components of a binary, making it sensitive to traditionally undetectable systems with periods of hundreds or thousands of years. In agreement with conventional expectations, almost all the spectrally identified binaries with measured parallaxes fall above the main sequence in the colour-magnitude diagram. We find excellent agreement between spectrally and dynamically inferred mass ratios for the similar to 600 binaries in which a dynamical mass ratio can be measured from multi-epoch radial velocities. We obtain full orbital solutions for 64 systems, including 14 close binaries within hierarchical triples. We make available catalogues of stellar parameters, abundances, mass ratios, and orbital parameters.
WOS关键词LOW-MASS BINARIES ; SOLAR-TYPE STARS ; COMPOSITE SPECTRA ; RADIAL-VELOCITIES ; SPECTROSCOPIC BINARIES ; ORBITAL ELEMENTS ; MILKY-WAY ; O-STAR ; STELLAR ; MULTIPLICITY
资助项目Berkeley Fellowship ; Hellman award ; NSF ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant[321035] ; Australian Research Council[DP160103747] ; Carnegie-Princeton Fellowship ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Simons Investigator Award from the Simons Foundation ; Alfred P. Sloan Foundation ; NASA[NNX15AK14G] ; NSF[AST-1313280] ; Packard Foundation ; [SFB 881]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000429276700043
出版者OXFORD UNIV PRESS
资助机构Berkeley Fellowship ; Berkeley Fellowship ; Hellman award ; Hellman award ; NSF ; NSF ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; Australian Research Council ; Australian Research Council ; Carnegie-Princeton Fellowship ; Carnegie-Princeton Fellowship ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Simons Investigator Award from the Simons Foundation ; Simons Investigator Award from the Simons Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; NASA ; NASA ; NSF ; NSF ; Packard Foundation ; Packard Foundation ; Berkeley Fellowship ; Berkeley Fellowship ; Hellman award ; Hellman award ; NSF ; NSF ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; Australian Research Council ; Australian Research Council ; Carnegie-Princeton Fellowship ; Carnegie-Princeton Fellowship ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Simons Investigator Award from the Simons Foundation ; Simons Investigator Award from the Simons Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; NASA ; NASA ; NSF ; NSF ; Packard Foundation ; Packard Foundation ; Berkeley Fellowship ; Berkeley Fellowship ; Hellman award ; Hellman award ; NSF ; NSF ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; Australian Research Council ; Australian Research Council ; Carnegie-Princeton Fellowship ; Carnegie-Princeton Fellowship ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Simons Investigator Award from the Simons Foundation ; Simons Investigator Award from the Simons Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; NASA ; NASA ; NSF ; NSF ; Packard Foundation ; Packard Foundation ; Berkeley Fellowship ; Berkeley Fellowship ; Hellman award ; Hellman award ; NSF ; NSF ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Union's Seventh Framework Programme (FP 7) ERC Grant ; Australian Research Council ; Australian Research Council ; Carnegie-Princeton Fellowship ; Carnegie-Princeton Fellowship ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Martin A. and Helen Chooljian Membership from the Institute for Advanced Study at Princeton ; Simons Investigator Award from the Simons Foundation ; Simons Investigator Award from the Simons Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; NASA ; NASA ; NSF ; NSF ; Packard Foundation ; Packard Foundation
源URL[http://ir.bao.ac.cn/handle/114a11/37136]  
专题中国科学院国家天文台
通讯作者El-Badry, Kareem
作者单位1.Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
2.Univ Calif Berkeley, Theoret Astrophys Ctr, Berkeley, CA 94720 USA
3.Max Planck Inst Astron, D-69117 Heidelberg, Germany
4.Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 0200, Australia
5.Inst Adv Study, Olden Lane, Princeton, NJ 08540 USA
6.Observ Carnegie Inst Washington, Pasadena, CA 91101 USA
7.Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
8.Harvard Univ, Dept Astron, Cambridge, MA 02138 USA
9.Flatiron Inst, Ctr Computat Astrophys, New York, NY 10010 USA
10.NYU, Dept Phys, Ctr Cosmol & Particle Phys, 4 Washington Pl, New York, NY 10003 USA
推荐引用方式
GB/T 7714		 El-Badry, Kareem,Ting, Yuan-Sen,Rix, Hans-Walter,et al. Discovery and characterization of 3000+main-sequence binaries from APOGEE spectra[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,476(1):528-553.
APA El-Badry, Kareem.,Ting, Yuan-Sen.,Rix, Hans-Walter.,Quataert, Eliot.,Weisz, Daniel R..,...&Liu, Chao.(2018).Discovery and characterization of 3000+main-sequence binaries from APOGEE spectra.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,476(1),528-553.
MLA El-Badry, Kareem,et al."Discovery and characterization of 3000+main-sequence binaries from APOGEE spectra".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 476.1(2018):528-553.

入库方式： OAI收割

来源：国家天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。