Hubble constant at intermediate redshift using the CO-line Tully-Fisher relation

被引:11
作者
Tutui, Y [1 ]
Sofue, Y
Honma, M
Takashi, I
Wakamatsu, K
机构
[1] Univ Tokyo, Inst Astron, Mitaka, Tokyo 1810015, Japan
[2] NHK Japan Broadcasting Corp, Program Prod Dept, Sci & Environm Div, Shibuya Ku, Tokyo 1508001, Japan
[3] Natl Astron Observ, VERA Project Off, Mitaka, Tokyo 1818588, Japan
[4] Tohoku Univ, Inst Astron, Aoba Ku, Sendai, Miyagi 9808578, Japan
[5] Gifu Univ, Dept Technol, Gifu 50111, Japan
基金
日本学术振兴会;
关键词
cosmology : Hubble constant; galaxies : distances and redshifts; ISM : CO line;
D O I
10.1093/pasj/53.5.701
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have determined distances and Hubble ratios for galaxies at intermediate redshifts, cz similar to 10000 to 35000 km s(-1), by applying the CO-line Tully-Fisher relation to our (CO)-C-12 (J = 1-0)-line observations using the Nobeyama 45-m telescope, and near-IR (NIR) photometry in the J- and H-bands using the 1.88-m telescope at Okayama Astrophysical Observatory. By averaging the Hubble ratios from the J-band result, we obtained a Hubble constant of H-0 = 60 +/- 10 kms(-1) Mpc(-1). We argue that the CO line-NIR Tully-Fisher relation can be a complimentary method to the other methods for measuring the distances of galaxies at intermediate and high redshifts.
引用
收藏
页码:701 / 712
页数:12
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