The H₂O maser toward IRAS 06308+0402

Authors: Pashchenko, M.¹; Lekht, E.²; Tolmachev, A.

Source: Astronomy Letters, Volume 29, Number 11, November 2003 , pp. 731-736(6)

Publisher: MAIK Nauka/Interperiodica

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Abstract:

We present the monitoring results for the H₂O 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 H₂O maser was discovered in May 1992 (Pashchenko 1992) during a survey of IRAS sources associated with dense cold clouds with bipolar molecular outflows. The H₂O 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⁻¹). We found a cyclic variability of the total maser flux with a period from 1.8 to 3.1 yr.

Keywords: interstellar medium; gaseous nebulae; stars—structure and evolution

Document Type: Research article

DOI: http://dx.doi.org/10.1134/1.1624459

Affiliations: 1: Email: pachenko@sai.msu.ru 2: Email: lekht@sai.msu.ru

Publication date: 2003-11-01