Navegar

Colección

Datos Estadísticas

Artículo

Paron, S.; Peña, M.C.; Ortega, M.E.; Fariña, C.; Petriella, A.; Rubio, M.; Ashley, R.P. "The molecular environment of the pillar-like features in the HII region G46.5-0.2" (2017) Monthly Notices of the Royal Astronomical Society. 470(4):4662-4670
Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

At the interface of HII regions and molecular gas, peculiar structures appear, some of them with pillar-like shapes. Understanding their origin is important for characterizing triggered star formation and the impact of massive stars on the interstellar medium. In order to study the molecular environment and influence of radiation on two pillar-like features related to the HII region G46.5-0.2, we performed molecular line observations with the Atacama Submillimeter Telescope Experiment and spectroscopic optical observations with the Isaac Newton Telescope. From the optical observations, we identified the star that is exciting the HII region as spectral type O4-6. The molecular data allowed us to study the structure of the pillars and an HCO+ cloud lying between them. In this HCO+ cloud, which has no well-defined 12CO counterpart, we found direct evidence of star formation: two molecular outflows and two associated near-IR nebulosities. The outflow axis orientation is perpendicular to the direction of the radiation flow from the HII region. Several Class I sources are also embedded in this HCO+ cloud, showing that it is usual that young stellar objects (YSOs) form large associations occupying a cavity bounded by pillars. On the other hand, it was confirmed that the radiation-driven implosion (RDI) process is not occurring in one of the pillar tips. © 2017 The Authors.

Registro:

Documento: Artículo
Título:The molecular environment of the pillar-like features in the HII region G46.5-0.2
Autor:Paron, S.; Peña, M.C.; Ortega, M.E.; Fariña, C.; Petriella, A.; Rubio, M.; Ashley, R.P.
Filiación:CONICET-Universidad de Buenos Aires, Instituto de Astronomía y Física del Espacio CC 67, Suc. 28, Buenos Aires, 1428, Argentina
Universidad de Buenos Aires, Facultad de Arquitectura Diseño y Urbanismo, Buenos Aires, Argentina
Isaac Newton Group of Telescopes, La Palma, E38700, Spain
Instituto de Astrofísica de Canarias (IAC), Universidad de La Laguna, Dpto. Astrofísica, La Laguna, Spain
Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
Palabras clave:HII regions; ISM: jets and outflows; ISM: molecules; Photodissociation region (PDR); Stars: formation
Año:2017
Volumen:470
Número:4
Página de inicio:4662
Página de fin:4670
DOI: http://dx.doi.org/10.1093/MNRAS/STX1486
Título revista:Monthly Notices of the Royal Astronomical Society
Título revista abreviado:Mon. Not. R. Astron. Soc.
ISSN:00358711
CODEN:MNRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v470_n4_p4662_Paron

Referencias:

  • Anderson, L.D., (2012) A&A, 542, p. A10
  • Beckwith, S.V.W., Sargent, A.I., Chini, R.S., Guesten, R., (1990) AJ, 99, p. 924
  • Bertoldi, F., McKee, C.F., (1990) ApJ, 354, p. 529
  • Bertsch, D.L., Dame, T.M., Fichtel, C.E., Hunter, S.D., Sreekumar, P., Stacy, J.G., Thaddeus, P., (1993) ApJ, 416, p. 587
  • Beuther, H., Schilke, P., Sridharan, T.K., Menten, K.M., Walmsley, C.M., Wyrowski, F., (2002) A&A, 383, p. 892
  • Bisbas, T.G., Wünsch, R., Whitworth, A.P., Hubber, D.A., Walch, S., (2011) ApJ, 736, p. 142
  • Chenel, A., Roncero, O., Aguado, A., Agúndez, M., Cernicharo, J., (2016) J. Chem. Phys, 144
  • Ezawa, H., Kawabe, R., Kohno, K., Yamamoto, S., (2004) Proc. SPIE. Society of Photo-Optical Instrumentation Engineers, 5489, p. 763. , in Oschmann J. M., Jr, ed., SPIE, Bellingham
  • Gahm, G.F., Carlqvist, P., Johansson, L.E.B., Nikolić, S., (2006) A&A, 454, p. 201
  • Goicoechea, J.R., Pety, J., Gerin, M., Hily-Blant, P., Le Bourlot, J., (2009) A&A, 498, p. 771
  • Hartigan, P., Reiter, M., Smith, N., Bally, J., (2015) AJ, 149, p. 101
  • Herbst, E., (1978) ApJ, 222, p. 508
  • Hirota, T., Yamamoto, S., Mikami, H., Ohishi, M., (1998) ApJ, 503, p. 717
  • Kraus, S., (2006) A&A, 455, p. 521
  • Lan, T.-W., Ménard, B., Zhu, G., (2015) MNRAS, 452, p. 3629
  • Lawrence, A., (2007) MNRAS, 379, p. 1559
  • Lefloch, B., Lazareff, B., (1994) A&A, 289, p. 559
  • Lora, V., Raga, A.C., Esquivel, A., (2009) A&A, 503, p. 477
  • Mackey, J., Lim, A.J., (2010) MNRAS, 403, p. 714
  • Ohlendorf, H., Preibisch, T., Gaczkowski, B., Ratzka, T., Ngoumou, J., Roccatagliata, V., Grellmann, R., (2013) A&A, 552, p. A14
  • Paron, S., Ortega, M.E., Petriella, A., Rubio, M., Dubner, G., Giacani, E., (2012) MNRAS, 419, p. 2206
  • Paron, S., (2015) AJ, 149, p. 193
  • Perrin, M.D., Duchêne, G., Kalas, P., Graham, J.R., (2006) ApJ, 645, p. 1272
  • Rathborne, J.M., Johnson, A.M., Jackson, J.M., Shah, R.Y., Simon, R., (2009) ApJS, 182, p. 131
  • Rawlings, J.M.C., Redman, M.P., Keto, E., Williams, D.A., (2004) MNRAS, 351, p. 1054
  • Reipurth, B., (1983) A&A, 117, p. 183
  • Reipurth, B., Bally, J., (2001) ARA&A, 39, p. 403
  • Rosolowsky, E., (2010) ApJS, 188, p. 123
  • Schilke, P., Walmsley, C.M., Pineau Des Forets, G., Roueff, E., Flower, D.R., Guilloteau, S., (1992) A&A, 256, p. 595
  • Shirley, Y.L., (2013) ApJS, 209, p. 2
  • Shu, F.H., Najita, J., Ostriker, E.C., Shang, H., (1995) ApJ, 455, p. L155
  • Smith, N., (2010) MNRAS, 406, p. 952
  • Smith, N., Bally, J., Walborn, N.R., (2010) MNRAS, 405, p. 1153
  • Sugitani, K., Fukui, Y., Mizuni, A., Ohashi, N., (1989) ApJ, 342, p. L87
  • Tremblin, P., Audit, E., Minier, V., Schmidt, W., Schneider, N., (2012) A&A, 546, p. A33
  • Tremblin, P., (2013) A&A, 560, p. A19
  • Urquhart, J.S., (2014) A&A, 568, p. A41
  • van der Tak, F.F.S., Black, J.H., Schöier, F.L., Jansen, D.J., van Dishoeck, E.F., (2007) A&A, 468, p. 627
  • Walborn, N.R., (1980) ApJS, 44, p. 535
  • Walborn, N.R., Fitzpatrick, E.L., (1990) PASP, 102, p. 379
  • White, G.J., (1999) A&A, 342, p. 233
  • Yamaguchi, R., Saito, H., Mizuno, N., Mine, Y., Mizuno, A., Ogawa, H., Fukui, Y., (1999) PASJ, 51, p. 791

Citas:

---------- APA ----------
Paron, S., Peña, M.C., Ortega, M.E., Fariña, C., Petriella, A., Rubio, M. & Ashley, R.P. (2017) . The molecular environment of the pillar-like features in the HII region G46.5-0.2. Monthly Notices of the Royal Astronomical Society, 470(4), 4662-4670.
http://dx.doi.org/10.1093/MNRAS/STX1486
---------- CHICAGO ----------
Paron, S., Peña, M.C., Ortega, M.E., Fariña, C., Petriella, A., Rubio, M., et al. "The molecular environment of the pillar-like features in the HII region G46.5-0.2" . Monthly Notices of the Royal Astronomical Society 470, no. 4 (2017) : 4662-4670.
http://dx.doi.org/10.1093/MNRAS/STX1486
---------- MLA ----------
Paron, S., Peña, M.C., Ortega, M.E., Fariña, C., Petriella, A., Rubio, M., et al. "The molecular environment of the pillar-like features in the HII region G46.5-0.2" . Monthly Notices of the Royal Astronomical Society, vol. 470, no. 4, 2017, pp. 4662-4670.
http://dx.doi.org/10.1093/MNRAS/STX1486
---------- VANCOUVER ----------
Paron, S., Peña, M.C., Ortega, M.E., Fariña, C., Petriella, A., Rubio, M., et al. The molecular environment of the pillar-like features in the HII region G46.5-0.2. Mon. Not. R. Astron. Soc. 2017;470(4):4662-4670.
http://dx.doi.org/10.1093/MNRAS/STX1486