Molecular gas in the star-forming region IRAS 08589-4714
Aims. We present an analysis of the region IRAS 08589-4714 with the aim of characterizing the molecular environment. Methods. We observed the <SUP>12</SUP>CO(3-2), <SUP>13</SUP>CO(3-2), C<SUP>18</SUP>O(3-2), HCO<SUP>+</SUP>(3-2), and HCN(3-2) molecular...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | Argentina |
| Institución: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/85788 |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85788 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias Astronómicas Circumstellar matter ISM: individual objects: IRAS 08589-4714 ISM: jets and outflows ISM: molecules Stars: formation Stars: massive |
| Sumario: | Aims. We present an analysis of the region IRAS 08589-4714 with the aim of characterizing the molecular environment. Methods. We observed the <SUP>12</SUP>CO(3-2), <SUP>13</SUP>CO(3-2), C<SUP>18</SUP>O(3-2), HCO<SUP>+</SUP>(3-2), and HCN(3-2) molecular lines in a region of 150″ × 150″, centered on the IRAS source, to analyze the distribution and characteristics of the molecular gas linked to the IRAS source. Results. The molecular gas distribution reveals a molecular clump that is coincident with IRAS 08589-4714 and with a dust clump detected at 1.2 mm. The molecular clump is 0.45 pc in radius and its mass and H<SUB>2</SUB> volume density are 310 M⊙ and 1.2 × 10<SUP>4</SUP> cm<SUP>-3</SUP>, respectively. Two overdensities were identified within the clump in HCN(3-2) and HCO<SUP>+</SUP>(3-2) lines. A comparison of the LTE and virial masses suggests that the clump is collapsing in regions that harbor young stellar objects. An analysis of the molecular lines suggests that they are driving molecular outflows. |
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