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HD 105899


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An infrared-optical study of IRAS point sources in the Virgo region
Optical identifications for 199 of the 206 IRAS point sources in a 113sq deg area centered on the Virgo cluster are made using four deepIIIa-J plates obtained with the 1.2-m UK Schmidt Telescope. Only 4percent of the E and S0 galaxies brigher than B = 16 are detected, ascompared with 44 percent of the Sc galaxies. Infrared properties of theVirgo cluster are found to be similar to those of field galaxies atsimilar redshifts. Such IRAS galaxies are typical spirals with B of lessthan about 14, infrared to optical luminosity ratios of about 1, andinfrared luminosities of about 10 to the 9th solar luminosities,properties which are independent of neutral hydrogen content for theVirgo cluster galaxies. Data suggest that the optically faint galaxieshave L(IR) of greater than 10 to the 12th solar luminosities.

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Observation and Astrometry data

Constellation:Virgo
Right ascension:12h11m18.54s
Declination:+08°36'03.8"
Apparent magnitude:8.606
Proper motion RA:-8.2
Proper motion Dec:1.1
B-T magnitude:10.413
V-T magnitude:8.756

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 105899
TYCHO-2 2000TYC 866-1033-1
USNO-A2.0USNO-A2 0975-06904927

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