Survey of ortho-H2D+ in high-mass star-forming regions
نویسندگان
چکیده
منابع مشابه
Molecular Outflows in Low- and High-Mass Star Forming Regions
We review the known properties of molecular outflows from lowand high-mass young stars. General trends among outflows are identified, and the most recent studies on the morphology, kinematics, energetics, and evolution of molecular outflows are discussed, focusing on results from high-resolution millimeter observations. We review the existing four broad classes of outflow models and compare num...
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We have surveyed the high-mass Galactic star-forming regions G19.61 0.23, G45.47+0.05, and W75N for interstellar methanol (CH3OH), formic acid (HCOOH), acetic acid (CH3COOH), methyl formate (HCOOCH3), methyl cyanide (CH3CN), and ethyl cyanide (CH3CH2CN) with the Berkeley-Illinois-Maryland Association Array. From our observations, we have detected two new sources of interstellar HCOOH toward the...
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Aims. The goal of this work is to characterize the millimeter and centimeter properties of intermediate/high-mass young stellar objects (YSOs) in order to search for any evolutionary trend. Methods. We carried out observations at 1.2 mm with the IRAM 30 m telescope, and at 3.6 and 1.3 cm with the VLA toward a sample of 11 luminous (> 103 L⊙) IRAS sources classified as high-mass protostellar obj...
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We present the results of a survey of a small sample (14) of low-mass protostars (LIR < 103 L⊙) for 6.7 GHz methanol maser emission performed using the ATNF Parkes radio telescope. No new masers were discovered. We find that the lower luminosity limit for maser emission is near 103 L⊙, by comparison of the sources in our sample with previously detected methanol maser sources. We examine the IRA...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2020
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/202039010