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HD 31788


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Photometric and spectroscopic analysis of high Galactic latitude molecular clouds. I - Distances and extinctions of stars toward 25 selected regions
The paper presents new photoelectric photometry in the UBV, uvby, andH-beta systems for 320 stars at high Galactic latitudes, selected fortheir proximity to the densest portions of a variety of high Galacticlatitude atomic and molecular clouds. Low-resolution digital spectra areemployed to classify 115 of the stars. Several novel techniques aredeveloped for automatic digital spectral classification, and fordereddening Stromgren uvby-beta and Johnson UBV,H-beta photometry. Anempirical determination of the errors in the derived dereddened colors,and techniques for converting between the two photometric systems arepresented on the basis of the analysis of a statistically significantsample of 1480 stars with complete data sets in both photometric systemsand with an accurate MK spectral type. New constraints on the distancesto several clouds are presented.

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观测天体数据

星座:天兔座
右阿森松:04h58m04.13s
赤纬:-16°11'06.8"
视星:8.033
距离:354.61 天文距离
右阿森松适当运动:8.9
赤纬适当运动:0.3
B-T magnitude:8.149
V-T magnitude:8.043

目录:
适当名称   (Edit)
HD 1989HD 31788
TYCHO-2 2000TYC 5900-248-1
USNO-A2.0USNO-A2 0675-01803515
HIPHIP 23083

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