Radio continuum and carbon monoxide observations of V645 Cygni /GL 2789/

Details Radio continuum and carbon monoxide observations of V645 Cygni /GL 2789/ Radio continuum and carbon monoxide observations of V645 Cygni /GL 2789/

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86.1245r&link_type=abstract

Astronomical Journal, vol. 86, Aug. 1981, p. 1245-1249. Research supported by the Consejo Nacional de Ciencia y Tecnologia.

Astronomy and Astrophysics

Astronomy

26

Carbon Monoxide, Early Stars, Radio Sources (Astronomy), Variable Stars, Continuous Spectra, Emission Spectra, H Ii Regions, Nebulae

Scientific paper

Using the VLA at a wavelength of 6 cm, a 2 x 2 arcmin region centered on V 645 Cyg (GL 2789), was mapped. No continuum source was found in the immediate vicinity of V 645 Cyg at a level of 2 mJy. This upper limit places constraints on the parameters of any H II region associated with V 645 Cyg. An unresolved (equal to or less than 0.5 arcsec) source with a flux density of 8 mJy displaced approximately 50 arcmin to the southeast of V 645 Cyg was detected. The possible relationship between this source and V 645 Cyg is discussed. The CO emission profile shows moderately broad (15 km/s) wings. The blueshifted and redshifted emission comes from spatially unresolved (equal to or less than 1 arcmin) regions that are centered on V 645 Cyg to within observational error (15 arcsec). The presence of these CO emission wings strengthens the suggestion that V 645 Cyg is a recently formed early-type star.

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