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HD 143703

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관련 글

The λ Bootis phenomenon: interaction between a star and a diffuse interstellar cloud The λ Bootis stars, a group of late B- to early F-type PopulationI stars, have surface abundances that resemble the general metaldepletion pattern found in the interstellar medium. Inspired by therecent result that the fundamental parameters of these peculiar starsdiffer in no respect from those of a comparison sample of normal stars,the hypothesis of an interaction between a star and a diffuseinterstellar cloud is considered as a possible explanation of thepeculiar abundance pattern. It is found that such a scenario is able toexplain the selective accretion of interstellar gas depleted incondensable elements as well as the spectral range of the λBootis phenomenon.
Photoelectric photometry of stars in the Vilnius system in Kapteyn areas SA 2, 4 and 6 Photoelectric photometry in the Vilnius system of 114 standard stars inKapteyn areas SA 2, 4, and 6 is presented with mean square errors of thearithmetic mean +/- 0.005 mag. Photometrically determined spectral typesand luminosity classes of the stars are also presented.
Photoelectric Photometry of Stars in Kapteyn Area SA:6 in the Vilnius Photometric System Not Available

관련 링크

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관측 및 측정 데이터

별자리:	작은곰자리
적경:	15^h54^m23.13^s
적위:	+75Â°45'18.1"
가시등급:	8.883
거리:	434.783 파섹
적경상의 고유운동:	-21.2
적위상의 고유운동:	36.1
B-T magnitude:	9.091
V-T magnitude:	8.901

천체목록:

일반명	(Edit)
HD 1989	HD 143703
TYCHO-2 2000	TYC 4560-1414-1
USNO-A2.0	USNO-A2 1650-01817885
HIP	HIP 77885

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