FIRST PARALLAX MEASUREMENTS TOWARD A 6.7 GHz METHANOL MASER WITH THE AUSTRALIAN LONG BASELINE ARRAY-DISTANCE TO G 339.884-1.259

	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
刊名	ASTROPHYSICAL JOURNAL
	2015-06-01
卷号	805 期号:2
关键词	astrometry Galaxy: kinematics and dynamics masers stars: formation
英文摘要	We 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	STAR-FORMING REGIONS ; H-II REGIONS ; PERSEUS SPIRAL ARM ; OUTER ROTATION CURVE ; TRIGONOMETRIC PARALLAXES ; MILKY-WAY ; GALACTIC LONGITUDES ; VLBI ASTROMETRY ; HIGH-RESOLUTION ; MASSIVE STARS
收录类别	SCI
语种	英语
WOS记录号	WOS:000356715400044
公开日期	2015-08-18
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/18356]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.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
推荐引用方式 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).
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).
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).