An optical search for the intergalactic H I cloud in Leo

Details An optical search for the intergalactic H I cloud in Leo An optical search for the intergalactic H I cloud in Leo

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.213..111k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 213, March 1, 1985, p. 111-115.

Astronomy and Astrophysics

Astronomy

8

Hydrogen Clouds, Intergalactic Media, Mass To Light Ratios, Charge Coupled Devices, Spiral Galaxies, Stellar Luminosity

Scientific paper

An optical search has been made for the large intergalactic H I cloud discovered from Arecibo by Schneider et al. A very deep red UKSTU plate of the area has been scanned by the APM machine and deep CCD frames of a small area near a peak in the H I emission have been acquired. No extended emission is found at the limiting surface brightness of the photographic material and no excess of stars above that expected from our Galaxy is found in the CCD data. However, due to the extreme size of the H I cloud, the upper limit on the total luminosity is that of a dwarf galaxy, MB ⪆ -18. Thus a highly extended very low surface brightness galaxy can not be ruled out, at present.

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