Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003astl...29..731p&link_type=abstract
Astronomy Letters, vol. 29, p. 731-736 (2003)
Astronomy and Astrophysics
Astronomy
2
Scientific paper
We present the monitoring results for the H_2O maser toward the infrared source IRAS 06308+0402 associated with a dense cold molecular cloud. The observations were carried out with the 22-m radio telescope at the Pushchino Radio Astronomy Observatory (Russia) during 1992-2003. The H_2O maser was discovered in May 1992 (Pashchenko 1992) during a survey of IRAS sources associated with dense cold clouds with bipolar molecular outflows. The H_2O spectrum contains many emission features, suggesting the fragmentation of the envelope around a young star. The star has a low peculiar velocity relative to the CO molecular cloud (~2.2 km/s). We found a cyclic variability of the total maser flux with a period from 1.8 to 3.1 yr.
Lekht E. E.
Pashchenko M. I.
Tolmachev A. M.
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