830 citations · 14.7k across the 186 of their papers we have counts for
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Morphology, Environment, and the HI Mass Function
Christopher M. Springob, Martha P. Haynes, Riccardo Giovanelli
We exploit a large, complete optical diameter and HI flux limited sample of spiral galaxies with types later than S0a to derive a robust measurement of the HI mass function (HIMF)…
Detection of 21 Centimeter HI Absorption at z = 0.78 in a Survey of Radio Continuum Sources
Jeremy Darling, Riccardo Giovanelli, Martha P. Haynes +2
We report the detection of a deep broad HI 21 cm absorption system at z = 0.78 toward the radio source [HB89] 2351+456 (4C+45.51) at z = 1.992. The HI absorption was identified in…
The Impact of Distance Uncertainties on Local Luminosity and Mass Functions
Karen L. Masters, Martha P. Haynes, Riccardo Giovanelli
In order to investigate discrepancies between recent published estimates of the the HI mass function (HIMF), we explore the impact of distance uncertainties on the derivation of th…
Extinction Effects in Spiral Galaxy Rotation Curves
Carlos Valotto, Riccardo Giovanelli
Observations show that the slope of the inner part of the H/[NII] rotation curves of disk galaxies is depressed by extinction: at fixed luminosity, the observed slope is in fact…
M/L, H-alpha Rotation Curves, and HI Measurements for 329 Nearby Cluster and Field Spirals: I. Data
Nicole P. Vogt, Martha P. Haynes, Terry Herter +1
A survey of 329 nearby galaxies (redshift z < 0.045) has been conducted to study the distribution of mass and light within spiral galaxies over a range of environments. The 18 obse…
M/L, H-alpha Rotation Curves, and HI Measurements for 329 Nearby Cluster and Field Spirals: III. Evolutionin Fundamental Galaxy Parameters
Nicole P. Vogt, Martha P. Haynes, Riccardo Giovanelli +1
We have conducted a study of optical and HI properties of spiral galaxies (size, luminosity, H-alpha flux distribution, circular velocity, HI gas mass) to investigate causes (e.g.,…