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HST spectrum and timing of the ultracompact X-ray binary candidate 47 Tuc X9

文献类型：期刊论文

作者Tudor, V.1; Miller-Jones, J. C. A.1; Knigge, C.2; Maccarone, T. J.3; Tauris, T. M.4,5; Bahramian, A.6; Chomiuk, L.6; Heinke, C. O.7; Sivakoff, G. R.7; Strader, J.6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2018-05-01
卷号476期号:2页码:1889-1908
关键词accretion, accretion discs stars: black holes stars: neutron X-rays: binaries
ISSN号0035-8711
DOI10.1093/mnras/sty284
英文摘要To confirm the nature of the donor star in the ultracompact X-ray binary candidate 47 Tuc X9, we obtained optical spectra (3000-10 000 angstrom) with the Hubble Space Telescope / Space Telescope Imaging Spectrograph. We find no strong emission or absorption features in the spectrum of X9. In particular, we place 3 sigma upper limits on the H alpha and He II lambda 4686 emission line equivalent widths -EWH alpha less than or similar to 14 angstrom and -EWHe II less than or similar to 9 angstrom, respectively. This is much lower than seen for typical X-ray binaries at a similar X-ray luminosity (which, for L2-10 keV approximate to 10(33)-10(34) erg s(-1) is typically -EWH alpha similar to 50 angstrom). This supports our previous suggestion, by Bahramian et al., of an H-poor donor in X9. We perform timing analysis on archival far-ultraviolet, V-and I-band data to search for periodicities. In the optical bands, we recover the 7-d superorbital period initially discovered in X-rays, but we do not recover the orbital period. In the far-ultraviolet, we find evidence for a 27.2 min period (shorter than the 28.2 min period seen in X-rays). We find that either a neutron star or black hole could explain the observed properties of X9. We also perform binary evolution calculations, showing that the formation of an initial black hole/He-star binary early in the life of a globular cluster could evolve into a present-day system such as X9 (should the compact object in this system indeed be a black hole) via mass-transfer driven by gravitational wave radiation.
WOS关键词ADVECTION-DOMINATED ACCRETION ; SPACE-TELESCOPE COUNTERPARTS ; MASS-TRANSFER INSTABILITIES ; NGC-4472 GLOBULAR-CLUSTER ; FAR-ULTRAVIOLET SURVEY ; BLACK-HOLE CANDIDATE ; WHITE-DWARF DONORS ; SU-UMA STARS ; NEUTRON-STARS ; 4U 1626-67
资助项目Curtin Strategic International Research Scholarship from Curtin University ; Australian Research Council[FT140101082] ; Packard Foundation ; National Science Foundation[AST-1308124] ; Natural Sciences and Engineering Research Council of Canada ; Curtin University through the Peter Curran Memorial Fellowship ; European Union[664931] ; NASA[NAS 5-26555] ; NASA through Space Telescope Science Institute[HST-GO-14203.002] ; state government of Western Australia
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000430940900034
出版者OXFORD UNIV PRESS
资助机构Curtin Strategic International Research Scholarship from Curtin University ; Curtin Strategic International Research Scholarship from Curtin University ; Australian Research Council ; Australian Research Council ; Packard Foundation ; Packard Foundation ; National Science Foundation ; National Science Foundation ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Curtin University through the Peter Curran Memorial Fellowship ; Curtin University through the Peter Curran Memorial Fellowship ; European Union ; European Union ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; state government of Western Australia ; state government of Western Australia ; Curtin Strategic International Research Scholarship from Curtin University ; Curtin Strategic International Research Scholarship from Curtin University ; Australian Research Council ; Australian Research Council ; Packard Foundation ; Packard Foundation ; National Science Foundation ; National Science Foundation ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Curtin University through the Peter Curran Memorial Fellowship ; Curtin University through the Peter Curran Memorial Fellowship ; European Union ; European Union ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; state government of Western Australia ; state government of Western Australia ; Curtin Strategic International Research Scholarship from Curtin University ; Curtin Strategic International Research Scholarship from Curtin University ; Australian Research Council ; Australian Research Council ; Packard Foundation ; Packard Foundation ; National Science Foundation ; National Science Foundation ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Curtin University through the Peter Curran Memorial Fellowship ; Curtin University through the Peter Curran Memorial Fellowship ; European Union ; European Union ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; state government of Western Australia ; state government of Western Australia ; Curtin Strategic International Research Scholarship from Curtin University ; Curtin Strategic International Research Scholarship from Curtin University ; Australian Research Council ; Australian Research Council ; Packard Foundation ; Packard Foundation ; National Science Foundation ; National Science Foundation ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Curtin University through the Peter Curran Memorial Fellowship ; Curtin University through the Peter Curran Memorial Fellowship ; European Union ; European Union ; NASA ; NASA ; NASA through Space Telescope Science Institute ; NASA through Space Telescope Science Institute ; state government of Western Australia ; state government of Western Australia
源URL[http://ir.bao.ac.cn/handle/114a11/21236]  
专题中国科学院国家天文台
通讯作者Tudor, V.
作者单位1.Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia
2.Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
3.Texas Tech Univ, Dept Phys, Box 41051, Lubbock, TX 79409 USA
4.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
5.Univ Bonn, Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany
6.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
7.Univ Alberta, Dept Phys, CCIS 4-183, Edmonton, AB T6G 2E1, Canada
8.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
9.Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch 8020, New Zealand
10.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
推荐引用方式
GB/T 7714		 Tudor, V.,Miller-Jones, J. C. A.,Knigge, C.,et al. HST spectrum and timing of the ultracompact X-ray binary candidate 47 Tuc X9[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,476(2):1889-1908.
APA Tudor, V..,Miller-Jones, J. C. A..,Knigge, C..,Maccarone, T. J..,Tauris, T. M..,...&Zurek, D. R..(2018).HST spectrum and timing of the ultracompact X-ray binary candidate 47 Tuc X9.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,476(2),1889-1908.
MLA Tudor, V.,et al."HST spectrum and timing of the ultracompact X-ray binary candidate 47 Tuc X9".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 476.2(2018):1889-1908.

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