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

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

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..244..348c&link_type=abstract

Dark Galaxies and Lost Baryons, Proceedings of the International Astronomical Union, IAU Symposium, Volume 244, p. 348-349

Statistics

Applications

Galaxies: Kinematics And Dynamics, Radio Lines: Galaxies

Scientific paper

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.

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