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Arecibo Survey of HI Emission from Disk Galaxies at Redshift z~0.2

Published online by Cambridge University Press:  01 June 2007

B. Catinella ,
M. P. Haynes ,
J. P. Gardner ,
A. J. Connolly  and
R. Giovanelli
B. Catinella
Affiliation:
NAIC-Arecibo Observatory†, Arecibo, PR 00612, USA; email: [email protected]
M. P. Haynes
Affiliation:
Center for Radiophysics and Space Research and NAIC, Cornell University, Ithaca, NY 14853, USA
J. P. Gardner
Affiliation:
Dept. of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA
A. J. Connolly
Affiliation:
Dept. of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA
R. Giovanelli
Affiliation:
Center for Radiophysics and Space Research and NAIC, Cornell University, Ithaca, NY 14853, USA
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Abstract

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We present results from a targeted survey undertaken with the 305m Arecibo radiotelescope to detect HI-line emission from disk galaxies at redshift z>0.16. Among other applications, this dataset will be used to study the evolution of disk scaling relations at intermediate redshifts. Compared to optical velocity widths, HI measurements sample a larger fraction of the disks, where the rotation curves are typically flat, and are not affected by slit smearing and misalignment or by aperture effects. Thus, in contrast to studies based on optical spectroscopy, this dataset allows for a direct comparison with the local Tully-Fisher relation that is technique independent.

Keywords

galaxies: kinematics and dynamicsradio lines: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S244: Dark Galaxies and Lost Baryons , June 2007 , pp. 348 - 349
Copyright
Copyright © International Astronomical Union 2008

References

Flores, H. et al. 2006, A&A, 455, 107Google Scholar
Tully, R. B., & Fisher, J. R. 1977, A&A, 54, 661Google Scholar
York, D. G. et al. 2000, AJ, 120, 1579CrossRefGoogle Scholar