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HD 136603


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Emission-line stars with infrared dust emission - Implications of the galactic distribution
Near-infrared photometry of a final selection of emission-line stars ispresented. A sample of about 700 such stars is analyzed and it is shownthat those with circumstellar dust have a spiral arm distribution in thegalaxy. The peculiar Be stars with dust are also considered inisolation; these too are found to have a Population I distribution. Itis therefore unlikely that they are symbiotic stars or the progenitorsof normal planetary nebulae; they probably form a distinct type whosenearest relatives are the VV Cephei stars.

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Observation and Astrometry data

Constellation:てんびん座
Right ascension:15h22m21.81s
Declination:-25°27'34.2"
Apparent magnitude:7.836
Distance:367.647 parsecs
Proper motion RA:-18.7
Proper motion Dec:2.5
B-T magnitude:9.603
V-T magnitude:7.982

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 136603
TYCHO-2 2000TYC 6767-736-1
USNO-A2.0USNO-A2 0600-17965054
HIPHIP 75227

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