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HD 35329


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Empirical temperature calibrations for early-type stars
Three temperature calibrations of suitable photometric quantities havebeen derived for O and B stars. A sample of 120 stars with reliableT(eff.) determinations has been used for establishing each calibration.The different calibrations have been critically discussed and compared.Temperature determinations for 1009 program stars have been obtainedwith an accuracy of the order of 10 percent.

E(B-V) determination from an UV-visual two-colour diagram - O and B stars in the Catalogue of Stellar Ultraviolet Fluxes
For the O and B type stars in the Catalogue of Stellar UltravioletFluxes, an approach is presented which does not require a preciseknowledge of spectral type and luminosity class for deriving E(B-V)color excesses. The method is based on the use of an UV-visual two-colordiagram; galactic variations in the interstellar extinction law areanalyzed and fully taken into account. The results have been comparedwith those derived by using the differences between observed andintrinsic colors for stars with known spectral classification. The verygood agreement in a large number of cases (94 percent) demonstrates thatthe present approach permits the derivation of reliable color excessvalues for early-type stars even if only a rough spectral classificationis available.

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观测天体数据

星座:獵戶座
右阿森松:05h24m34.75s
赤纬:+15°58'31.0"
视星:8.504
距离:456.621 天文距离
右阿森松适当运动:-7.4
赤纬适当运动:-3.9
B-T magnitude:8.67
V-T magnitude:8.518

目录:
适当名称   (Edit)
HD 1989HD 35329
TYCHO-2 2000TYC 1296-1762-1
USNO-A2.0USNO-A2 1050-01979243
HIPHIP 25287

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