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TYC 875-994-1


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Optical identifications of the IRAS faint sources in the Virgo cluster area.
This paper presents a study on the deep optical identifications of 369IRAS faint sources in a 102 square degree area centered on the Virgocluster. We obtained the positions and magnitudes of candidates fromfour UK Schmidt Telescope IIIa-J direct plates. 89 (24%) are identifiedas stars and 276 (75%) as galaxies. There are 4 (1%) empty fields to theplate limit of B=~22. The infrared-optical database for 193 FSC-onlysources is given. Most of the IRAS galaxy sources are spirals. There are83 IRAS galaxy sources being regarded as the cluster members by Binggeliet al. (1985). In our sample, a correlation between the luminosity ratioL_IR_/L_B_ and the infrared flux ratio F(100μm)/F(60μm) isevident. For the member galaxies, a weak correlation between L_IR_/L_B_and L_IR_ is also found.

UBV Photoelectric Photometry Catalogue (1986). III Errors and Problems on DM and HD Stars
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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Basakci
Sað Açýklýk:12h44m25.09s
Yükselim:+07°59'50.1"
Görünürdeki Parlaklýk:8.849
Uzaklýk:584.795 parsek
özdevim Sað Açýklýk:-16.9
özdevim Yükselim:-4.2
B-T magnitude:10.809
V-T magnitude:9.011

Kataloglar ve belirtme:
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TYCHO-2 2000TYC 875-994-1
USNO-A2.0USNO-A2 0975-07021996
HIPHIP 62165

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