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HD 4481


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Chemical analysis of 24 dusty (pre-)main-sequence stars
We have analysed the chemical photospheric composition of 24 HerbigAe/Be and Vega-type stars in search for the λ Bootis phenomenon.We present the results of the elemental abundances of the sample stars.Some of the stars were never before studied spectroscopically at opticalwavelengths. We have determined the projected rotational velocities ofour sample stars. Furthermore, we discuss stars that depict a(selective) depletion pattern in detail. HD 4881 andHD 139614 seem to display an overall deficiency.AB Aur and possibly HD 126367 havesubsolar values for the iron abundance, but are almost solar in silicon.HD 100546 is the only clear λ Bootis star inour sample.Appendix is only available in electronic form athttp://www.edpsciences.org

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观测天体数据

星座:仙女座
右阿森松:00h47m15.88s
赤纬:+37°16'31.4"
视星:9.413
右阿森松适当运动:1
赤纬适当运动:-7.7
B-T magnitude:9.545
V-T magnitude:9.424

目录:
适当名称   (Edit)
HD 1989HD 4481
TYCHO-2 2000TYC 2288-1493-1
USNO-A2.0USNO-A2 1200-00338337
HIPHIP 3687

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