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Paron, S.; Ortega, M.; Astort, A.; Rubio, M.; Fariña, C. "Studying the molecular ambient towards the young stellar object EGO G35.04-0.47" (2014) Publications of the Astronomical Society of Japan. 66(1)
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Abstract:

We are performing a systematic study of the interstellar medium around extended green objects (EGOs), likely massive young stellar objects driving outflows. EGO G35.04-0.47 is located towards a dark cloud at the north-western edge of an H ii region. Recently, H2 jets were discovered towards this source, mainly towards its south-west, where the H2 1-0 S(1) emission peaks. Therefore, the source was catalogued as the molecular hydrogen emission-line object MHO 2429. In order to study the molecular ambient towards this star-forming site, we observed a region around the aforementioned EGO using the Atacama Submillimeter Telescope Experiment in the 12CO J = 3-2, 13CO J = 3-2, HCO+ J = 4-3, and CS J = 7-6 lines with an angular and spectral resolution of 22′′ and 0.11 km s-1, respectively. The observations revealed a molecular clump where the EGO is embedded at vLSR ∼ 51 km s-1, in coincidence with the velocity of a Class I 95 GHz methanol maser previously detected. Analyzing the 12CO line we discovered high velocity molecular gas in the range from 34 to 47 km s-1, most likely a blueshifted outflow driven by the EGO. The alignment and shape of this molecular structure coincide with those of the south-west lobe of MHO 2429, mainly between 46 and 47 km s-1, confirming that we are mapping its CO counterpart. Performing a spectral energy distribution analysis of EGO G35.04-0.47, we found that its central object should be an intermediate-mass young stellar object accreting mass at a rate similar to those found in some massive YSOs. We suggest that this source can become a massive YSO. © The Author 2014. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved.

Registro:

Documento: Artículo
Título:Studying the molecular ambient towards the young stellar object EGO G35.04-0.47
Autor:Paron, S.; Ortega, M.; Astort, A.; Rubio, M.; Fariña, C.
Filiación:Instituto de Astronomía y Física del Espacio (IAFE), CC 67, Suc. 28, 1428 Buenos Aires, Argentina
FADU and CBC, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
Departamento de Física, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
Isaac Newton Group of Telescopes, E-38700, La Palma, Spain
Palabras clave:ISM: clouds; ISM: H ii regions; ISM: jets and outflows; stars: formation
Año:2014
Volumen:66
Número:1
DOI: http://dx.doi.org/10.1093/pasj/pst018
Título revista:Publications of the Astronomical Society of Japan
Título revista abreviado:Publ. Astron. Soc. Jpn.
ISSN:00046264
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046264_v66_n1_p_Paron

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Citas:

---------- APA ----------
Paron, S., Ortega, M., Astort, A., Rubio, M. & Fariña, C. (2014) . Studying the molecular ambient towards the young stellar object EGO G35.04-0.47. Publications of the Astronomical Society of Japan, 66(1).
http://dx.doi.org/10.1093/pasj/pst018
---------- CHICAGO ----------
Paron, S., Ortega, M., Astort, A., Rubio, M., Fariña, C. "Studying the molecular ambient towards the young stellar object EGO G35.04-0.47" . Publications of the Astronomical Society of Japan 66, no. 1 (2014).
http://dx.doi.org/10.1093/pasj/pst018
---------- MLA ----------
Paron, S., Ortega, M., Astort, A., Rubio, M., Fariña, C. "Studying the molecular ambient towards the young stellar object EGO G35.04-0.47" . Publications of the Astronomical Society of Japan, vol. 66, no. 1, 2014.
http://dx.doi.org/10.1093/pasj/pst018
---------- VANCOUVER ----------
Paron, S., Ortega, M., Astort, A., Rubio, M., Fariña, C. Studying the molecular ambient towards the young stellar object EGO G35.04-0.47. Publ. Astron. Soc. Jpn. 2014;66(1).
http://dx.doi.org/10.1093/pasj/pst018