Home List of Titles The Hubble Space Telescope key project on the extragalactic distance scale XXIV: the calibration of Tully-Fisher relations and the value of the Hubble constant
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/210938
- The Hubble Space Telescope key project on the extragalactic distance scale XXIV: the calibration of Tully-Fisher relations and the value of the Hubble constant
- Sakai, Shoko; Mould, Jeremy R.; Hughes, Shaun M. G.; Huchra, John P.; Macri, Lucas M.; Kennicutt Jr, Robert C.; Gibson, Brad K.; Ferrarese, Laura; Freedman, Wendy L.; Han, Mingsheng; Ford, Holland C.; Graham, John A.; Illingworth, Garth D.; Kelson, Daniel D.; Madore, Barry F.; Sebo, Kim; Silbermann, N. A.; Stetson, Peter B.
- This paper presents the calibration of BVRIH-0.5 Tully-Fisher relations based on Cepheid distances to 21 galaxies within 25 Mpc and 23 clusters within 10,000 km s-1. These relations have been applied to several distant cluster surveys in order to derive a value for the Hubble constant, H0, mainly concentrating on an I-band all-sky survey by Giovanelli and collaborators, consisting of total I magnitudes and 50% line width data for ~550 galaxies in 16 clusters. For comparison, we also derive the values of H0 using surveys in the B and V bands by Bothun and collaborators, and in H band by Aaronson and collaborators. Careful comparisons with various other databases from the literature suggest that the H-band data, which have isophotal magnitudes extrapolated from aperture magnitudes rather than total magnitudes, are subject to systematic uncertainties. Taking a weighted average of the estimates of Hubble constants from four surveys, we obtain H0 = 71 ± 4 (random) ± 7 (systematic). We have also investigated how the value of H0 is affected by various systematic uncertainties, such as the internal extinction correction method used, Tully-Fisher slopes and shapes, a possible metallicity dependence of the Cepheid period-luminosity relation, and cluster population incompleteness bias.
- Publication type
- Journal article
- The Astrophysical Journal, Vol. 529, no. 2 (Feb 2000), pp. 698-722
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences
- Distance scale; Galaxies: distances and redshifts; Galaxies: kinematics and dynamics; Galaxies: photometry
- University of Chicago Press
- Publisher URL
- Copyright © 2000 The American Astronomical Society. All rights reserved. The American Astronomical Society does not allow institutions to archive either the accepted manuscript or the published version of the article.
- Peer reviewed