2MTF-IV. A bulk flow measurement of the local Universe
文献类型：期刊论文
| 作者 | Hong, Tao1,2,3 ; Springob, Christopher M.2,3,4; Staveley-Smith, Lister2,3; Scrimgeour, Morag I.2,3,5,6; Masters, Karen L.7,8; Macri, Lucas M.9; Koribalski, Baerbel S.10; Jones, D. Heath11; Jarrett, Tom H.12
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2014-11-21 |
| 卷号 | 445期号:1页码:402-413 |
| 关键词 | surveys galaxies: distances and redshifts galaxies: spiral |
| 英文摘要 | Using the 2MASS near-infrared photometry and high-signal-to-noise HI 21-cm data from the Arecibo, Green Bank, Nancay, and Parkes telescopes, we calculate the redshift-independent distances and peculiar velocities of 2018 bright inclined spiral galaxies over the whole sky. This project is part of the 2MASS Tully-Fisher survey (2MTF), aiming to map the galaxy peculiar velocity field within 100 h(-1) Mpc, with an all-sky coverage apart from Galactic latitudes vertical bar b vertical bar < 5 degrees. A chi(2) minimization method was adopted to analyse the Tully-Fisher peculiar velocity field in J, H, and K bands, using a Gaussian filter. We combine information from the three wavebands, to provide bulk flow measurements of 310.9 +/- 33.9, 280.8 +/- 25.0, and 292.3 +/- 27.8 km s(-1) at depths of 20, 30, and 40 h(-1) Mpc, respectively. Each of these bulk flow vectors points in a direction similar to those found by previous measurements. At each of the three depths, the bulk flow magnitude is consistent with predictions made by the Lambda cold dark matter (Lambda CDM) model at the 1 sigma level. The maximum likelihood and minimum variance method were also used to analyse the 2MTF samples, giving similar results. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343827700032 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6364]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Western Australia, Int Ctr Radio Astron Res, Crawley, WA 6009, Australia 3.ARC Ctr Excellence All Sky Astrophys CAASTRO, Redfern, NSW 2016, Australia 4.Australian Astron Observ, N Ryde, NSW 1670, Australia 5.Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada 6.Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada 7.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England 8.Univ Portsmouth, South East Phys Network Www Sepnet Ac Uk, Portsmouth PO1 3FX, Hants, England 9.Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA 10.Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Epping, NSW 1710, Australia |
| 推荐引用方式 GB/T 7714 | Hong, Tao,Springob, Christopher M.,Staveley-Smith, Lister,et al. 2MTF-IV. A bulk flow measurement of the local Universe[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,445(1):402-413. |
| APA | Hong, Tao.,Springob, Christopher M..,Staveley-Smith, Lister.,Scrimgeour, Morag I..,Masters, Karen L..,...&Jarrett, Tom H..(2014).2MTF-IV. A bulk flow measurement of the local Universe.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,445(1),402-413. |
| MLA | Hong, Tao,et al."2MTF-IV. A bulk flow measurement of the local Universe".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 445.1(2014):402-413. |
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来源：国家天文台
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