VLBI observations of 12 GHz methanol masers

Abstract

view Abstract Citations (59) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS VLBI Observations of 12 GHz Methanol Masers Menten, K. M. ; Reid, M. J. ; Moran, J. M. ; Wilson, T. L. ; Johnston, K. J. ; Batrla, W. Abstract Very long baseline interferometric observations of 20 → 3-1E line of interstellar methanol (CH3OH) at 12.1 GHz toward three star-forming regions are reported. Toward the ultracompact H II region W3(OH), the methanol maser emission is found to emanate from multiple compact regions that are projected against the continuum emission. Individual maser spots have sizes of less than 0arcsec.002 (7×1013cm) and brightness temperatures greater than 2×1010K. For NGC 7538 and Cepheus A, the authors have determined absolute positions for one emission feature. Publication: The Astrophysical Journal Pub Date: October 1988 DOI: 10.1086/185292 Bibcode: 1988ApJ...333L..83M Keywords: H Ii Regions; Interstellar Masers; Interstellar Matter; Methyl Alcohol; Star Formation; Very Large Scale Integration; Brightness Temperature; Line Spectra; Maser Outputs; Radio Sources (Astronomy); Astrophysics; INTERFEROMETRY; INTERSTELLAR: MOLECULES; MASERS; NEBULAE: H II REGIONS; RADIO SOURCES: LINES; STARS: FORMATION full text sources ADS | data products SIMBAD (4)