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HD 18507


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Detection of Molecular Hydrogen Emission Associated with LkHα 264
We have detected the emission of molecular hydrogen from a classicalTTauri star, LkHα264 in the v = 1 - 0 S(1) line at 2.122μm. Theline velocity is coincident with the rest velocity of the star. The lineprofile is well reproduced by a model in which the line emanates frommaterial in a Keplerian rotating circumstellar disk. Fluorescence byX-ray ionization and shock excitation due to accretion or a low-velocitywind are considered for the emission mechanism of molecular hydrogen.

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观测天体数据

星座:白羊座
右阿森松:02h59m15.45s
赤纬:+25°27'57.3"
视星:9.135
右阿森松适当运动:-5.6
赤纬适当运动:-1.7
B-T magnitude:9.427
V-T magnitude:9.16

目录:
适当名称   (Edit)
HD 1989HD 18507
TYCHO-2 2000TYC 1786-1334-1
USNO-A2.0USNO-A2 1125-00959340
HIPHIP 13915

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