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For refcode 1994AJ....107.1629T:
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1994AJ....107.1629T GALAXY STRUCTURES IN THE HERCULES REGION MASSIMO TARENGHI, BIANCA GARILLI, AND DARIO MACCAGNI European Southern Observatory, Garching, Germany Electronic mail: mtarengh@eso.org bianca,dario@ifetr.mi.cnr.it Received 1993 October 22; revised 1994 January 8 ABSTRACT 216 redshifts have been obtained in a region of 981 sq deg south of the Hercules supercluster. 172 of these redshifts are of galaxies with m_pg_ <= 15.1, 110 of which had no previous velocity measurement. 44 new redshifts are of galaxies fainter than m_pg_ = 15.1. With these new data we have been able to define a sample in a vast region (~1700 sq deg) around Hercules limited to m_pg_ <= 15.1 with a velocity completeness of 81.5%. 189 galaxies have been morphologically classified so that all galaxies in the sample with known velocity now also have known morphology. The magnitude limited sample, including 556 galaxies, is then used to identify and describe galaxy structures in the region. We find that the overdense volume is small, that its overall appearance is that of a coral branch floating in a sea of nothing and that early and late type galaxies define different structures.
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