TRIGONOMETRIC PARALLAXES OF MASSIVE STAR-FORMING REGIONS: III. G59.7+0.1 AND W 51 IRS2
نویسندگان
چکیده
منابع مشابه
Trigonometric Parallaxes of Massive Star Forming Regions : I . S 252 & G 232 . 6 + 1 . 0
We are conducting a large program with the NRAO Very Long Baseline Array (VLBA) to measure trigonometric parallaxes of massive star-forming regions across the Milky Way. Here we report measurement of the parallax and proper motion of methanol masers in S 252 and G232.6+1.0. The parallax of S 252 is 0.476 ± 0.006 mas (2.10 −0.026 kpc), placing it in the Perseus spiral arm. The parallax of G232.6...
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We report trigonometric parallaxes for the sources NGC 7538 and Cep A, corresponding to distances of 2.65 −0.11 kpc and 0.70 +0.04 −0.04 kpc, respectively. The distance to NGC 7538 is considerably smaller than its kinematic distance and places it in the Perseus spiral arm. The distance to Cep A is also smaller than its kinematic distance and places it in the “Local” arm or spur. Combining the d...
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We present the largest sample of high-mass star-forming regions observed using submillimetre imaging polarimetry. The data were taken using SCUBA in conjunction with the polarimeter on the JCMT in Hawaii. In total, 16 star forming regions were observed, although some of these contain multiple cores. The polarimetry implies a variety of magnetic field morphologies, with some very ordered fields....
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In order to distinguish between the various components of massive star forming regions (i.e. infalling, outflowing and rotating gas structures) within our own Galaxy, we require high angular resolution observations which are sensitive to structures on all size scales. To this end, we present observations of the molecular and ionized gas towards massive star forming regions at 230 GHz from the S...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2009
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/693/1/413