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HD 30729


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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:波江座
右阿森松:04h49m41.61s
赤纬:-12°02'35.4"
视星:8.248
距离:862.069 天文距离
右阿森松适当运动:5.3
赤纬适当运动:-1.3
B-T magnitude:8.247
V-T magnitude:8.248

目录:
适当名称   (Edit)
HD 1989HD 30729
TYCHO-2 2000TYC 5325-101-1
USNO-A2.0USNO-A2 0750-01114910
HIPHIP 22435

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