An HI survey of polar ring galaxies
II. The Effelsberg sample *
Received 2 July 1996 / Accepted 14 August 1996
We present the results of a neutral hydrogen survey conducted with the 100-m radiotelescope at Effelsberg of 44 northern objects in the polar-ring galaxy atlas of Whitmore et al.(1990). These observations were performed to complement the Green Bank observations of polar-ring galaxies (Paper I). We detected 29 of these above our detection limit of a few mJy. The relative content of neutral hydrogen () of the early-type galaxies (E, S0) in this sample is significantly higher than for galaxies of the same morphological types from comparison samples, i.e. for elliptical galaxies = 0.17 0.09 and for S0 galaxies =0.75 0.13 which is about 6 times the mean value from the comparison samples for the same morphological types.
Key words: galaxies: distances and redshifts; elliptical and lenticular; ISM; peculiar radio lines: galaxies
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© European Southern Observatory (ESO) 1997
Online publication: July 3, 1998