Hubble Constant at Intermediate Redshift using the CO-Line Tully-Fisher Relation
Astrophysics
2015-06-24 v1
Abstract
We have determined distances and Hubble ratios for galaxies at intermediate redshifts, cz=about 10,000 to 35,000 km/s, by applying the CO-line Tully-Fisher relation to our 12CO (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 J-band result, we obtain a Hubble constant of H_0 = 60 (+/- 10) km/s/Mpc. We argue that the CO line-NIR TFR can be a complimentary method to the other methods for measuring distances of galaxies at intermediate and high redshifts.
Keywords
Cite
@article{arxiv.astro-ph/0108462,
title = {Hubble Constant at Intermediate Redshift using the CO-Line Tully-Fisher Relation},
author = {Y. Tutui and Y. Sofue and M. Honma and T. Ichikawa and K. Wakamatsu},
journal= {arXiv preprint arXiv:astro-ph/0108462},
year = {2015}
}
Comments
PASJ in press