Trigonometric Parallaxes of Massive Star-Forming Regions. II. Cep A and NGC 7538
作者： A. Brunthaler , X. W. Zheng , Y. Xu , L. Moscadelli , M. J. Reid
DOI: 10.1088/0004-637X/693/1/406
关键词: Rotation 、 Spiral galaxy 、 Physics 、 Motion (geometry) 、 Astrophysics 、 Star (graph theory) 、 Peculiar velocity 、 Kinematics 、 Maser 、 Astronomy 、 Galactic Center
摘要: We report trigonometric parallaxes for the sources NGC 7538 and Cep A, corresponding to distances of 2.65+(0.12)(-0.11) 0.70+(0.04)(-0.04) kpc, respectively. The distance is considerably smaller than its kinematic places it in Perseus spiral arm. A also "Local" arm or spur. Combining proper motions with observed radial velocities gives location full space motion star-forming regions. find significant deviations from circular galactic orbits these sources: both show large peculiar (greater 10 km s(-1)) counter rotation has a comparable toward Galactic center.
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Moshe Elitzur, Michele R. Pestalozzi, Roy S. Booth, John E. Conway, Erratum: “A Circumstellar Disk in a High-Mass Star-forming Region” (ApJ, 603, L113 [2003]) The Astrophysical Journal. ,vol. 606, ,(2004) , 10.1086/421296
R. A. Gaume, W. M. Goss, H. R. Dickel, T. L. Wilson, K. J. Johnston, The NGC 7538 IRS 1 region of star formation: Observations of the H66 alpha recombination line with a spatial resolution of 300 AU The Astrophysical Journal. ,vol. 438, pp. 776- ,(1995) , 10.1086/175122
Ye Xu, MJ Reid, XW Zheng, KM Menten, The distance to the Perseus spiral arm in the Milky Way. Science. ,vol. 311, pp. 54- 57 ,(2006) , 10.1126/SCIENCE.1120914
Roy S. Booth, Michele R. Pestalozzi, Moshe Elitzur, John E. Conway, A Circumstellar Disc in a High-Mass Star Forming Region arXiv: Astrophysics. ,(2004) , 10.1086/421296
James J. Binney, Walter Dehnen, Local stellar kinematics from Hipparcos data web science. ,vol. 298, pp. 387- 394 ,(1998) , 10.1046/J.1365-8711.1998.01600.X
V. Migenes, R. J. Cohen, G. C. Brebner, OH maser proper motions in Cepheus A Monthly Notices of the Royal Astronomical Society. ,vol. 254, pp. 501- 508 ,(1992) , 10.1093/MNRAS/254.3.501
José M. Torrelles,, José F. Gómez,, Luis F. Rodríguez,, Salvador Curiel,, Paul T. P. Ho,, Guido Garay, The Thermal Radio Jet of Cepheus A HW2 and the Water Maser Distribution at 0.″08 Scale (60 AU) The Astrophysical Journal. ,vol. 457, ,(1996) , 10.1086/309903
M. J. Reid, K. M. Menten, A. Brunthaler, X. W. Zheng, L. Moscadelli, Y. Xu, TRIGONOMETRIC PARALLAXES OF MASSIVE STAR-FORMING REGIONS. I. S 252 & G232.6+1.0 The Astrophysical Journal. ,vol. 693, pp. 397- 405 ,(2009) , 10.1088/0004-637X/693/1/397
Michele R. Pestalozzi, Moshe Elitzur, John E. Conway, Roy S. Booth, A CIRCUMSTELLAR DISK IN A HIGH-MASS STAR-FORMING REGION The Astrophysical Journal. ,vol. 603, pp. 113- 116 ,(2004) , 10.1086/383127
Harold L. Johnson, Photometric Distances of Galactic Clusters. The Astrophysical Journal. ,vol. 126, pp. 121- ,(1957) , 10.1086/146377