HOT MOLECULAR CORES IN INFRARED DARK CLOUDS - Kölner UniversitätsPublikationsServer

Rathborne, J. M., Garay, G., Jackson, J. M., Longmore, S., Zhang, Q. and Simon, R. (2011). HOT MOLECULAR CORES IN INFRARED DARK CLOUDS. Astrophys. J., 741 (2). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-4357

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DOI:10.1088/0004-637X/741/2/120

Abstract

We present high angular resolution continuum images and molecular line spectra obtained at 345 GHz with the Submillimeter Array (SMA) toward two massive cores that lie within Infrared Dark Clouds (IRDCs): G034.43+00.24 MM1 and G024.33+00.11 MM1. Both of these cores contain bright, unresolved (<2 '') objects that have previously been imaged in the millimeter/submillimeter continuum with the Institut de RadioAstronomie Millimetrique (IRAM) Plateau de Bure Interferometer and SMA and show complex molecular line chemistry. The new, higher angular resolution SMA continuum images reveal that both cores contain massive (8, 26 M-circle dot), unresolved (0 ''.6; similar to 3000 AU) continuum emission features and emission from many complex molecular transitions, which confirm that these are hot molecular cores, an early stage in the formation of a high-mass star. Because these hot cores are located within IRDCs, they may well represent the very earliest phases in the formation of high-mass protostars and, hence, their detailed study may reveal the initial conditions within high-mass star-forming cores, before they are shredded apart by stellar winds and radiation.

Item Type:

Journal Article

Creators:

Creators	Email	ORCID	ORCID Put Code
Rathborne, J. M.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Garay, G.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Jackson, J. M.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Longmore, S.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Zhang, Q.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Simon, R.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED