High-velocity-resolution observations of OH main line lasers in the M82 starburst - Astrophysics > Cosmology and Nongalactic AstrophysicsReportar como inadecuado




High-velocity-resolution observations of OH main line lasers in the M82 starburst - Astrophysics > Cosmology and Nongalactic Astrophysics - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Using the VLA, a series of high velocity resolution observations have beenmade of the M82 starburst at 1.6 GHz. These observations follow up on previousstudies of the main line OH maser emission in the central kiloparsec of thisstarburst region, but with far greater velocity resolution, showing significantvelocity structure in some of the maser spots for the first time. A total ofthirteen masers were detected, including all but one of the previously knownsources. While some of these masers are still unresolved in velocity, these newresults clearly show velocity structure in spectra from several of the maserregions. Position-velocity plots show good agreement with the distribution ofH{\sc i} including interesting velocity structure on the blueward feature inthe west of the starburst which traces the velocity distribution seen in theionised gas.



Autor: M.K. Argo Curtin, A. Pedlar, R.J. Beswick, T.W.B. Muxlow, D.M. Fenech, Manchester

Fuente: https://arxiv.org/



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