Astronomy and Astrophysics – Astronomy
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...109..123c&link_type=abstract
Astronomy and Astrophysics, vol. 109, no. 1, May 1982, p. 123-130.
Astronomy and Astrophysics
Astronomy
12
Ammonia, Molecular Clouds, Orion Nebula, Radio Sources (Astronomy), Star Formation, B Stars, Carbon Monoxide, Continuous Spectra, Early Stars, Energy Budgets, Gas Density, Gas Temperature, H Ii Regions, Infrared Astronomy, Molecular Spectra, Radio Telescopes, Stellar Luminosity, Water Masers
Scientific paper
Detailed mapping of an extended NH3 cloud located in the Orion complex close to the reflection nebula NGC 2071 is presented. Observations of the J,K = (1,1) and (2,2) inversion lines of NH3 at 23.69 and 23.72 GHz were made with a 25-m radiotelescope at a linear resolution of 3 pc, along with radio continuum observations at 6 cm using the VLA. Ammonia line mapping and its comparison with CO observations show the region to be a typical small (about 1 pc), warm (about 20 K), dense (H2 density greater than 10,000/cm) and massive (about 620 solar masses) cloud in which star formation is taking place. No noticeable clumping is present at the limiting resolution. The peak of ammonia emission occurs at the position of the BN-type source NGC 2071 IRS, where an unresolved H II region is also found, suggesting that star formation has already occurred in the core of the molecular cloud. The cloud luminosity, H II region ionization and the CO profiles may thus be explained by an early B type star embedded in the BN-like object
Calamai Giovanni
Felli Marcello
Giardinelli S.
No associations
LandOfFree
Star formation in the NH3 cloud of the NGC 2071 region does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Star formation in the NH3 cloud of the NGC 2071 region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Star formation in the NH3 cloud of the NGC 2071 region will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1099852