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FIRST PARALLAX MEASUREMENTS TOWARD A 6.7 GHz METHANOL MASER WITH THE AUSTRALIAN LONG BASELINE ARRAY-DISTANCE TO G 339.884-1.259
Krishnan, V.1,2; Ellingsen, S. P.1; Reid, M. J.3; Brunthaler, A.4; Sanna, A.4; McCallum, J.1; Reynolds, C.5; Bignall, H. E.5; Phillips, C. J.2; Dodson, R.6; Rioja, M.6,7; Caswell, J. L.2; Chen, X.8; Dawson, J. R.2,9; Fujisawa, K.10; Goedhart, S.11,16; Green, J. A.2,12; Hachisuka, K.8,10; Honma, M.13; Menten, K.4; Shen, Z. Q.8; Voronkov, M. A.2; Walsh, A. J.5; Xu, Y.14; Zhang, B.8; Zheng, X. W.15
2015-06-01
Source PublicationASTROPHYSICAL JOURNAL
Volume805Issue:2Pages:129
AbstractWe have conducted the first parallax and proper motion measurements of 6.7 GHz methanol maser emission using the Australian Long Baseline Array. The parallax of G 339.884-1.259 measured from five epochs of observations is 0.48 +/- 0.08 mas, corresponding to a distance of 2.1(-0.3)(+0.4) kpc, placing it in the Scutum spiral arm. This is consistent (within the combined uncertainty) with the kinematic distance estimate for this source at 2.5 +/- 0.5 kpc using the latest Solar and Galactic rotation parameters. We find from the Lyman continuum photon flux that the embedded core of the young star is of spectral type B1, demonstrating that luminous 6.7 GHz methanol masers can be associated with high-mass stars toward the lower end of the mass range.
KeywordAstrometry Galaxy: Kinematics And Dynamics Masers Stars: Formation
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/805/2/129
WOS KeywordSTAR-FORMING REGIONS ; H-II REGIONS ; PERSEUS SPIRAL ARM ; OUTER ROTATION CURVE ; TRIGONOMETRIC PARALLAXES ; MILKY-WAY ; GALACTIC LONGITUDES ; VLBI ASTROMETRY ; HIGH-RESOLUTION ; MASSIVE STARS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000356715400044
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14903
Collection紫金山天文台青海观测站
Affiliation1.Univ Tasmania, Sch Phys Sci, Hobart, Tas 7001, Australia
2.CSIRO, Australia Telescope Natl Fac, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia
3.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
4.Max Planck Inst Radioastron, D-53121 Bonn, Germany
5.Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia
6.Univ Western Australia M468, Int Ctr Radio Astron Res, Crawley, WA 09, Australia
7.Observ Astron Nacl IGN, E-28014 Madrid, Spain
8.Shanghai Astron Observ, Shanghai 200030, Peoples R China
9.Macquarie Univ, Dept Phys & Astron, MQ Res Ctr Astron Astrophys & Astrophoton, N Ryde, NSW 2109, Australia
10.Yamaguchi Univ, Fac Sci, Dept Phys, Yamaguchi 7538512, Japan
11.Hartebeesthoek Radio Astron Observ, ZA-1740 Krugersdorp, South Africa
12.Jodrell Bank Observ, SKA Org, Macclesfield SK11 9DL, Cheshire, England
13.Grad Univ Adv Study, Natl Astron Observ Japan & Dept Astron Sci, Mizusawa VLBI Observ, Mitaka, Tokyo 1818588, Japan
14.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
15.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China
16.SKA South Africa, ZA-7405 Pinelands, South Africa
Recommended Citation
GB/T 7714
Krishnan, V.,Ellingsen, S. P.,Reid, M. J.,et al. FIRST PARALLAX MEASUREMENTS TOWARD A 6.7 GHz METHANOL MASER WITH THE AUSTRALIAN LONG BASELINE ARRAY-DISTANCE TO G 339.884-1.259[J]. ASTROPHYSICAL JOURNAL,2015,805(2):129.
APA Krishnan, V..,Ellingsen, S. P..,Reid, M. J..,Brunthaler, A..,Sanna, A..,...&Zheng, X. W..(2015).FIRST PARALLAX MEASUREMENTS TOWARD A 6.7 GHz METHANOL MASER WITH THE AUSTRALIAN LONG BASELINE ARRAY-DISTANCE TO G 339.884-1.259.ASTROPHYSICAL JOURNAL,805(2),129.
MLA Krishnan, V.,et al."FIRST PARALLAX MEASUREMENTS TOWARD A 6.7 GHz METHANOL MASER WITH THE AUSTRALIAN LONG BASELINE ARRAY-DISTANCE TO G 339.884-1.259".ASTROPHYSICAL JOURNAL 805.2(2015):129.
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