Evidence of a pure starburst nature of the nuclear region of NGC 253

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dc.creatorBrunthaler, A.
dc.creatorCastangia, P.
dc.creatorTarchi, A.
dc.creatorHenkel, C.
dc.creatorReid, M. J.
dc.creatorFalcke, H.
dc.creatorMenten, K. M.
dc.date2009-02-06
dc.date.accessioned2026-07-07T13:01:34Z
dc.date.available2026-07-07T13:01:34Z
dc.descriptionWe present high-resolution spectral line and continuum VLBI and VLA observations of the nuclear region of NGC 253 at 22 GHz. While the water vapor masers in this region were detected on arcsecond and milliarcsecond scales, we could not detect any compact continuum emission with a 5 sigma upper limit of ~ 1 mJy. The observations reveal that the water maser emission is not related to a possible low-luminosity active galactic nucleus but is almost certainly associated with star-formation activity. Not detecting any compact continuum source on milliarcsecond scales also questions the presence of a - previously assumed - active nucleus in NGC 253.
dc.descriptionAstronomy and Astrophysics (A&A), accepted, 7 pages, 2 Figures, also available at http://www.mpifr-bonn.mpg.de/staff/abrunthaler/pub.shtml
dc.identifierhttps://arxiv.org/abs/0902.1044
dc.identifierhttp://arxiv.org/abs/0902.1044
dc.identifier2009, A&A 497, 103
dc.identifierdoi:10.1051/0004-6361/200911615
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226193
dc.subjectCosmology and Nongalactic Astrophysics
dc.titleEvidence of a pure starburst nature of the nuclear region of NGC 253
dc.typetext

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