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A survey of radio emission from galactic OB stars
Radio continuum observations of 88 O-type and early B-type stars are examined. Results are presented for a subset of these stars which forms a distance-limited sample of all OB stars within 2.5 kpc
The binary system MWC 349.
The ionized zone surrounding MWC 349 has been resolved using the VLA. On the basis of a radio continuum map, it is concluded that there is a physical interaction between the two stellar components of
Infrared extinction maps and submillimeter dust continuum maps are powerful probes of the density structure in the envelope of star-forming cores. We make a direct comparison between infrared and
Orion B (NGC 2024). I: VLA and IR observations of the H II region
Les observations du continuum et de la raie d'absorption OH a une frequence de 1667 MHz sont presentees pour la region H II compacte et le nuage moleculaire associe Orion B. Les cartes du continuum
Revealing the Photodissociation Region: HST/NICMOS Imaging of NGC 7027
We report results from a Hubble Space Telescope (HST) and Near-Infrared Camera and Multiobject Spectrometer (NICMOS) program to study the distribution of hot neutral (molecular hydrogen) and ionized
The Extended Environment of M17: A Star Formation History
M17 is one of the youngest and most massive nearby star-formation regions in the Galaxy. It features a bright H II region erupting as a blister from the side of a giant molecular cloud (GMC).
CO J = 2-1 and 4-3 Observations of Proto-planetary Nebulae: Time-variable Mass Loss
Observations made with the Heinrich Hertz Telescope of CO millimeter and submillimeter emission toward a sample of 22 proto-planetary nebula (PPN) candidates resulted in detections of 12 sources in
The abundance of HCN in circumstellar envelopes of AGB stars of different chemical type
Aims. A multi-transition survey of HCN (sub-) millimeter line emission from a large sample of asymptotic giant branch (AGB) stars of different chemical type is presented. The data are analysed and
The Discovery of Nonthermal Radio Emission from Magnetic Bp--Ap Stars
In a VLA survey of chemically peculiar B- and A-type stars with strong magnetic fields, five of the 34 stars observed have been identified as 6 cm continuum sources. Three of the detections are