NAOC Open IR
The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints
Pesce, D. W.1,2; Braatz, J. A.3; Reid, M. J.1; Riess, A. G.4,5; Scolnic, D.6; Condon, J. J.3; Gao, F.3,7; Henkel, C.8,9; Impellizzeri, C. M. V.3,10; Kuo, C. Y.11,12; Lo, K. Y.3
2020-03-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume891Issue:1Pages:9
AbstractWe present a measurement of the Hubble constant made using geometric distance measurements to megamaser-hosting galaxies. We have applied an improved approach for fitting maser data and obtained better distance estimates for four galaxies previously published by the Megamaser Cosmology Project: UGC 3789, NGC 6264, NGC 6323, and NGC 5765b. Combining these updated distance measurements with those for the maser galaxies CGCG 074-064 and NGC 4258, and assuming a fixed velocity uncertainty of 250 km s(-1) associated with peculiar motions, we constrain the Hubble constant to be H-0 = 73.9 +/- 3.0 km s(-1) Mpc(-1) independent of distance ladders and the cosmic microwave background. This best value relies solely on maser-based distance and velocity measurements, and it does not use any peculiar velocity corrections. Different approaches for correcting peculiar velocities do not modify H-0 by more than +/- 1 sigma, with the full range of best-fit Hubble constant values spanning 71.8-76.9 km s(-1) Mpc(-1). We corroborate prior indications that the local value of H-0 exceeds the early-universe value, with a confidence level varying from 95% to 99% for different treatments of the peculiar velocities.
Funding OrganizationNational Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation
DOI10.3847/2041-8213/ab75f0
WOS KeywordMASER EMISSION ; PECULIAR VELOCITIES ; GEOMETRIC DISTANCE ; DARK ENERGY ; MOTION ; SCALE
Language英语
Funding ProjectNational Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation
Funding OrganizationNational Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; black hole Initiative at Harvard University - John Templeton Foundation ; black hole Initiative at Harvard University - John Templeton Foundation ; Gordon and Betty Moore Foundation ; Gordon and Betty Moore Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000537512600001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83366
Collection中国科学院国家天文台
Corresponding AuthorPesce, D. W.
Affiliation1.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.Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
5.Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA
6.Duke Univ, Dept Phys, 120 Sci Dr, Durham, NC 27708 USA
7.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
8.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
9.King Abdulaziz Univ, Astron Dept, Fac Sci, POB 80203, Jeddah 21589, Saudi Arabia
10.Joint ALMA Observ, Alonso Cordova 3107, Santiago, Chile
11.Natl Sun Yat Sen Univ, Dept Phys, 70 Lianhai Rd, Kaohsiung 804, Taiwan
12.Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan
Recommended Citation
GB/T 7714
Pesce, D. W.,Braatz, J. A.,Reid, M. J.,et al. The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,891(1):9.
APA Pesce, D. W..,Braatz, J. A..,Reid, M. J..,Riess, A. G..,Scolnic, D..,...&Lo, K. Y..(2020).The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints.ASTROPHYSICAL JOURNAL LETTERS,891(1),9.
MLA Pesce, D. W.,et al."The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints".ASTROPHYSICAL JOURNAL LETTERS 891.1(2020):9.
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