Title: A deep vla search for oh (1612 mhz) maser sources in the galactic plane
Authors: Blommaert, Joris ×
Vanlangevelde, Hj
Michiels, Wfp #
Issue Date: Jul-1994
Publisher: Springer-Verlag
Series Title: Astronomy & Astrophysics vol:287 issue:2 pages:479-492
Abstract: The results of a VLA OH (1612 MHz) search for OH/IR stars in 7 fields along the galactic plane are presented. Forty-four sources were detected of which 35 were not previously known. It is shown that ''blind'' radio interferometric observations (such as with the VLA) are capable of filling up the gap in the IRAS based OH surveys near the galactic plane. This is important for the dynamical modelling of the disc and bulge of our Galaxy. It is also demonstrated that the high resolution of a synthesis telescope is needed to avoid confusion in the galactic plane. Most detected sources are likely to be young (less than or similar to 1 Gyr) and massive (M(ms) > 2 - 3M.) evolved stars and have high expansion velocities (v(exp) > 14.5 km/s) and small deviations (< 10 km/s) from galactic rotation. Like Baud et al. (1981) we find a peak in the number of sources around l = 25-degrees, a region associated with active star formation and a low number of stars at l = 50 and 100.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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