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HD 170202


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The distance and structure of L379
UBV and H-beta photometry has been carried out on 107 stars locatedwithin the more obscured region of the dark galactic cloud L379. Most ofthe measured stars are fainter than 10.0 m and their spectralclassification is not available in the literature. Spectral types werefound for 47 stars using movement along the reddening line coupled withthe assumption that all stars are on the main sequence. For each star,the extinction A(v) (mag) and the distance r(kpc) were derived, and fromthe A(v)-r graph, an attempt was made to determine the structure ofL379.

UBV photometry in the vicinity of L379
UBV photometric sequence is presented for 102 stars in the vicinity ofL379, which was obtained for distance determinations of L379, anisolated dark cloud which has been identified as a source of bipolarmolecular flow. Of these stars, 76 are those with known MK spectraltypes. The available data were insufficient for an accurate distancedetermination of L379, and additional UBV photometry within the cloud isplanned.

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观测天体数据

星座:盾牌座
右阿森松:18h28m45.18s
赤纬:-14°11'21.6"
视星:9.159
右阿森松适当运动:8.3
赤纬适当运动:-5.1
B-T magnitude:9.788
V-T magnitude:9.211

目录:
适当名称
HD 1989HD 170202
TYCHO-2 2000TYC 5702-1030-1
USNO-A2.0USNO-A2 0750-13273449
HIPHIP 90560

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