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Ammonia observations of the nearby molecular cloud MBM 12 | | Jose F. Gomez
; Joaquin Trapero
; Sergio Pascual
; Nimesh Patel
; Carmen Morales
; Jose M. Torrelles
; | | Date: |
11 Dec 1999 | | Subject: | astro-ph | | Affiliation: | LAEFF-INTA, Madrid, Spain, Univ. Complutense, Madrid, Spain, CfA, USA, IEEC-CSIC, Barcelona, Spain, and IAA-CSIC, Granada, Spain | | Abstract: | We present NH3(1,1) and NH3(2,2) observations of MBM 12, the closest known molecular cloud (65 pc distance), aimed to find evidence for on-going star formation processes. No local temperature (with a T_rot upper limit of 12 K) nor linewidth enhancement is found, which suggests that the area of the cloud we mapped (~ 15’ size) is not currently forming stars. Therefore, this close ``starless’’ molecular gas region is an ideal laboratory to study the physical conditions preceding new star formation. A radio continuum source was found in Very Large Array archive data, close but outside the NH3 emission. This source is likely to be a background object. | | Source: | arXiv, astro-ph/0001175 | | Services: | Forum | Review | PDF | Favorites | |
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