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HD 195465


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Near-IR speckle imaging of massive young stellar objects
We present near-IR speckle images of 21 massive Young Stellar Objects(YSOs) associated with outflows. The aim of this study is to search forsub-arcsecond reflection nebulae associated with the outflow cavity. Wefind that 6 of the massive YSOs show a conical nebula which can beinterpreted in terms of reflected light from the dusty walls of theoutflow cavity. In all cases, the small scale structures seen in ourimages are compared with outflow indicators found in the literature. Noclear correlation is found between the presence of the reflectionnebulosity and any property such as degree of embeddedness. We also notethat 3 of the sources show close companions, one of them belonging alsoto the sample with conical nebula.Figures \ref{S140SpeckleFig}, \ref{S255SpeckleFig},\ref{Ha101Fig}-\ref{HGL490Fig} and\ref{GL2591SpeckleFig}-\ref{GL5180peckleFig} are only available inelectronic form at http://www.edpsciences.org

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观测天体数据

星座:天鵝座
右阿森松:20h30m08.95s
赤纬:+37°10'01.2"
视星:7.975
距离:260.417 天文距离
右阿森松适当运动:0.6
赤纬适当运动:-7.8
B-T magnitude:9.724
V-T magnitude:8.12

目录:
适当名称   (Edit)
HD 1989HD 195465
TYCHO-2 2000TYC 2697-551-1
USNO-A2.0USNO-A2 1200-15213128
HIPHIP 101147

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