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The Hot Molecular Core of G12.21–0.10: NH3(4, 4) Observations

Published online by Cambridge University Press:  13 April 2010

Eduardo de la Fuente ,
Stanley E. Kurtz ,
Carlos A. Rodriguez-Rico ,
Miguel A. Trinidad ,
Esteban Araya ,
Simon Kemp ,
Alicia Porras ,
Peter Hofner  and
José Franco
Eduardo de la Fuente
Affiliation:
Instituto de Astronomía y Meteorología, Dpto. de Física, CUCEI, Universidad de Guadalajara, MEXICO. email: edfuente@gmail.com
Stanley E. Kurtz
Affiliation:
Centro de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, MEXICO email: s.kurtz@crya.unam.mx
Carlos A. Rodriguez-Rico
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Guanajuato, MEXICO email: carlos@astro.ugto.mx, trinidad@astro.ugto.mx
Miguel A. Trinidad
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, Guanajuato, MEXICO email: carlos@astro.ugto.mx, trinidad@astro.ugto.mx
Esteban Araya
Affiliation:
National Radio Astronomy Observatory, and New Mexico Institute of Mining and Technology, Physics Department, Socorro, NM, USA email: earaya@nrao.edu, phofner@nrao.edu
Simon Kemp
Affiliation:
Instituto de Astronomía y Meteorología, Dpto. de Física, CUCEI, Universidad de Guadalajara, MEXICO. email: edfuente@gmail.com
Alicia Porras
Affiliation:
Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE). Puebla, MEXICO email: aporras@inaoep.mx
Peter Hofner
Affiliation:
National Radio Astronomy Observatory, and New Mexico Institute of Mining and Technology, Physics Department, Socorro, NM, USA email: earaya@nrao.edu, phofner@nrao.edu
José Franco
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, MEXICO email: pepe@astroscu.unam.mx
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Abstract

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In de la Fuente (2007; Ph. D. Thesis), the molecular clump associated with the ultracompact HII region G12.21–0.10 was confirmed as a large, hot, dense Hot Molecular Core nearby to the ionized gas. The density was confirmed by comparing low resolution NH3(2, 2) and (4, 4) VLA observations, with other molecular lines and radio–continuum observations. These results will be presented in detail in a forthcoming paper (de la Fuente et al. in preparation). In these works, for the first time, the spatial location of the Hot Molecular Core is presented. Here we present the NH3(4,4) observations from de la Fuente (2007; Ph. D. Thesis), confirming that the hotter and denser gas in the molecular core lies in a compact structure, of smaller scale than the NH3(2, 2) emission.

Keywords

stars: formationISM: moleculesradio continuum: ISM
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S262: Stellar Populations – Planning for the Next Decade , August 2009 , pp. 319 - 320
Copyright
Copyright © International Astronomical Union 2010

References

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