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The Megamaser Cosmology Project. XI. A Geometric Distance to CGCG 074-064

文献类型：期刊论文

作者Pesce, D. W.1,2; Braatz, J. A.3; Reid, M. J.1; Condon, J. J.3; Gao, F.3,4; Henkel, C.5,6; Kuo, C. Y.7; Lo, K. Y.3; Zhao, W.8,9
刊名ASTROPHYSICAL JOURNAL
出版日期2020-02-20
卷号890期号:2页码:15
ISSN号0004-637X
DOI10.3847/1538-4357/ab6bcd
英文摘要As part of the survey component of the Megamaser Cosmology Project, we have discovered a disk megamaser system in the galaxy CGCG 074-064. Using the Green Bank Telescope and the Very Large Array, we have obtained spectral monitoring observations of this maser system at a monthly cadence over the course of two years. We find that the systemic maser features display line-of-sight accelerations of similar to 4.4 km s(-1) yr(-1) that are nearly constant with velocity, while the high-velocity maser features show accelerations that are consistent with zero. We have also used the High-Sensitivity Array to make a high-sensitivity very long baseline interferometric map of the maser system in CGCG 074-064, which reveals that the masers reside in a thin, edge-on disk with a diameter of similar to 1.5 mas (0.6 pc). Fitting a three-dimensional warped disk model to the data, we measure a black hole mass of 2.42(-0.20)(+0.22) x 10(7) M-circle dot and a geometric distance to the system of 87.6(-7.2)(+7.9) Mpc. Assuming a cosmic microwave background-frame recession velocity of 7308 +/- 150 km s(-1), we constrain the Hubble constant to = H-0 = 81.0(-6.9)(+7.4) (stat.) +/- 1.4 (sys.) km s(-1) Mpc(-1).
WOS关键词MOLECULAR DISK ; MASER ; GALAXY ; VARIABILITY ; MOTIONS ; FIELD ; JET
资助项目NSF through the Grote Reber Fellowship Program ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000522100700027
出版者IOP PUBLISHING LTD
资助机构NSF through the Grote Reber Fellowship Program ; NSF through the Grote Reber Fellowship Program ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; NSF through the Grote Reber Fellowship Program ; NSF through the Grote Reber Fellowship Program ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; NSF through the Grote Reber Fellowship Program ; NSF through the Grote Reber Fellowship Program ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; NSF through the Grote Reber Fellowship Program ; NSF through the Grote Reber Fellowship Program ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - John Templeton Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation ; Black Hole Initiative at Harvard University - Gordon and Betty Moore Foundation
源URL[http://ir.bao.ac.cn/handle/114a11/55704]  
专题中国科学院国家天文台
通讯作者Pesce, D. W.
作者单位1.Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
2.Harvard Univ, Black Hole Initiat, 20 Garden St, Cambridge, MA 02138 USA
3.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA
4.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
5.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
6.King Abdulaziz Univ, Fac Sci, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia
7.Natl Sun Yat Sen Univ, Dept Phys, 70 Lianhai Rd, Kaohsiung 804, Taiwan
8.Shanghai Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
9.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
推荐引用方式
GB/T 7714		 Pesce, D. W.,Braatz, J. A.,Reid, M. J.,et al. The Megamaser Cosmology Project. XI. A Geometric Distance to CGCG 074-064[J]. ASTROPHYSICAL JOURNAL,2020,890(2):15.
APA Pesce, D. W..,Braatz, J. A..,Reid, M. J..,Condon, J. J..,Gao, F..,...&Zhao, W..(2020).The Megamaser Cosmology Project. XI. A Geometric Distance to CGCG 074-064.ASTROPHYSICAL JOURNAL,890(2),15.
MLA Pesce, D. W.,et al."The Megamaser Cosmology Project. XI. A Geometric Distance to CGCG 074-064".ASTROPHYSICAL JOURNAL 890.2(2020):15.

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