Navegar

Colección

Datos Estadísticas

Artículo

Paron, S.; Ortega, M.E.; Dubner, G.; Yuan, J.-H.; Petriella, A.; Giacani, E.; Li, J.Z.; Wu, Y.; Liu, H.; Huang, Y.F.; Zhang, S.-J. "H II REGION G46.5-0.2: THE INTERPLAY BETWEEN IONIZING RADIATION, MOLECULAR GAS, AND STAR FORMATION" (2015) Astronomical Journal. 149(6)
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:

H ii regions are particularly interesting because they can generate dense layers of gas and dust, elongated columns or pillars of gas pointing toward the ionizing sources, and cometary globules of dense gas where triggered star formation can occur. Understanding the interplay between the ionizing radiation and the dense surrounding gas is very important to explain the origin of these peculiar structures, and hence to characterize triggered star formation. G46.5-0.2 (G46), a poorly studied galactic H ii region located at about 4 kpc, is an excellent target for performing this kind of study. Using public molecular data extracted from the Galactic Ring Survey ( 13 CO J = 1-0) and from the James Clerk Maxwell Telescope data archive ( 12 CO, 13 CO, C 18 O J = 3-2, HCO + , and HCN J = 4-3), and infrared data from the GLIMPSE and MIPSGAL surveys, we perform a complete study of G46, its molecular environment, and the young stellar objects (YSOs) placed around it. We found that G46, probably excited by an O7V star, is located close to the edge of the GRSMC G046.34-00.21 molecular cloud. It presents a horse-shoe morphology opening in the direction of the cloud. We observed a filamentary structure in the molecular gas likely related to G46 and not considerable molecular emission toward its open border. We found that about 10′ to the southwest of G46 there are some pillar-like features, shining at 8 μm and pointing toward the H ii region open border. We propose that the pillar-like features were carved and sculpted by the ionizing flux from G46. We found several YSOs likely embedded in the molecular cloud grouped in two main concentrations: one, closer to the G46 open border consisting of Class II type sources, and another mostly composed of Class I type YSOs located just ahead of the pillar-like features, strongly suggesting an age gradient in the YSO distribution. © 2015. The American Astronomical Society. All rights reserved.

Registro:

Documento: Artículo
Título:H II REGION G46.5-0.2: THE INTERPLAY BETWEEN IONIZING RADIATION, MOLECULAR GAS, AND STAR FORMATION
Autor:Paron, S.; Ortega, M.E.; Dubner, G.; Yuan, J.-H.; Petriella, A.; Giacani, E.; Li, J.Z.; Wu, Y.; Liu, H.; Huang, Y.F.; Zhang, S.-J.
Filiación:Instituto de Astronomía y Física Del Espacio (IAFE, CONICET-UBA), CC 67, Suc. 28, Buenos Aires, 1428, Argentina
FADU - Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
National Astronomical Observatories, Chinese Academy of Sciences, 20 A Datun Road, Chaoyang District, Beijing, 100012, China
Department of Astronomy, Peking University, Beijing, 100871, China
Palabras clave:H II regions; ISM: clouds; ISM: molecules; stars: formation
Año:2015
Volumen:149
Número:6
DOI: http://dx.doi.org/10.1088/0004-6256/149/6/193
Título revista:Astronomical Journal
Título revista abreviado:Astron. J.
ISSN:00046256
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v149_n6_p_Paron

Referencias:

  • Anderson, L.D., Bania, T.M., (2009) ApJ, 690 (1), p. 706
  • Benjamin, R.A., Churchwell, E., Babler, B.L., (2003) PASP, 115, p. 953
  • Bertoldi, F., (1989) ApJ, 346, p. 735
  • Billot, N., Noriega-Crespo, A., Carey, S., (2010) ApJ, 712 (2), p. 797
  • Buckle, J.V., Curtis, E.I., Roberts, J.F., (2010) MNRAS, 401, p. 204
  • Buckle, J.V., Hills, R.E., Smith, H., (2009) MNRAS, 399, p. 1026
  • Carey, S.J., Noriega-Crespo, A., Mizuno, D.R., (2009) PASP, 121, p. 76
  • Chaisson, E.J., (1976) Frontiers of Astrophysics, p. 259. , ed E. H. Avrett (Cambridge, MA: Harvard Univ. Press)
  • Dale, J.E., Ercolano, B., Bonnell, I.A., (2012) MNRAS, 424, p. 377
  • Deharveng, L., Lefloch, B., Kurtz, S., (2008) A&A, 482, p. 585
  • Dirienzo, W.J., Indebetouw, R., Brogan, C., (2012) AJ, 144 (6), p. 173
  • Elmegreen, B.G., Kimura, T., Tosa, M., (1995) ApJ, 451, p. 675
  • Fazio, G.G., Hora, J.L., Allen, L.E., (2004) ApJS, 154 (1), p. 10
  • Frerking, M.A., Langer, W.D., Wilson, R.W., (1982) ApJ, 262, p. 590
  • Ginsburg, A., Glenn, J., Rosolowsky, E., (2013) ApJS, 208 (2), p. 14
  • Greene, T.P., Wilking, B.A., Andre, P., Young, E.T., Lada, C.J., (1994) ApJ, 434, p. 614
  • Greve, T.R., Papadopoulos, P.P., Gao, Y., Radford, S.J.E., (2009) ApJ, 692 (2), p. 1432
  • Gritschneder, M., Burkert, A., Naab, T., Walch, S., (2010) ApJ, 723 (2), p. 971
  • Gutermuth, R.A., Heyer, M., (2015) AJ, 149 (2), p. 64
  • Gutermuth, R.A., Megeath, S.T., Myers, P.C., (2009) ApJS, 184 (1), p. 18
  • Gutermuth, R.A., Myers, P.C., Megeath, S.T., (2008) ApJ, 674 (1), p. 336
  • Israel, F.P., (1978) A&A, 70, p. 769
  • Jackson, J.M., Rathborne, J.M., Shah, R.Y., (2006) ApJS, 163 (1), p. 145
  • Kauffmann, J., Pillai, T., (2010) ApJL, 723, p. L7
  • Kessel-Deynet, O., Burkert, A., (2003) MNRAS, 338, p. 545
  • Kurucz, R.L., (1979) ApJS, 40, p. 1
  • Kuchar, T.A., Bania, T.M., (1994) ApJ, 436, p. 117
  • Lada, C.J., (1987) IAU Symp., 115, p. 1. , Star Forming Regions, ed M. Peimbert and J. Jugaku (Dordrecht: Reidel)
  • Lefloch, B., Lazareff, B., (1994) A&A, 289, p. 559
  • Lefloch, B., Lazareff, B., Castets, A., (1997) A&A, 324, p. 249
  • Lockman, F.J., (1989) ApJS, 71, p. 469
  • Mackey, J., Lim, A.J., (2010) MNRAS, 403, p. 714
  • Maíz-Apellániz, J., Walborn, N.R., Galué, H.Á., Wei, L.H., (2004) ApJS, 151 (1), p. 103
  • Maíz Apellániz, J., Sota, A., Morrell, N.I., (2013) Proc. of 10th Meeting of Massive Stars, Massive Stars: From Alpha to Omega, 198
  • Martins, F., Plez, B., (2006) A&A, 457, p. 637
  • Martins, F., Schaerer, D., Hillier, D.J., (2005) A&A, 436, p. 1049
  • Ortega, M.E., Paron, S., Giacani, E., Rubio, M., Dubner, G., (2013) A&A, 556, p. A105
  • Panagia, N., (1973) AJ, 78, p. 929
  • Paron, S., Petriella, A., Ortega, M.E., (2011) A&A, 525, p. A132
  • Peretto, N., Fuller, G.A., (2009) A&A, 505, p. 405
  • Pitann, J., Linz, H., Ragan, S., (2013) ApJ, 766 (2), p. 68
  • Pound, M.W., Kane, J.O., Remington, B.A., (2005) Ap&SS, 298, p. 177
  • Pound, M.W., Kane, J.O., Ryutov, D.D., Remington, B.A., Mizuta, A., (2007) Ap&SS, 307, p. 187
  • Quireza, C., Rood, R.T., Balser, D.S., Bania, T.M., (2006) ApJS, 165 (1), p. 338
  • Rathborne, J.M., Johnson, A.M., Jackson, J.M., Shah, R.Y., Simon, R., (2009) ApJS, 182 (1), p. 131
  • Reed, B.C., (2003) AJ, 125 (5), p. 2531
  • Rieke, G.H., Lebofsky, M.J., (1985) ApJ, 288, p. 618
  • Rieke, G.H., Young, E.T., Engelbracht, C.W., (2004) ApJS, 154 (1), p. 25
  • Roberts, H., Van Der Tak, F.F.S., Fuller, G.A., Plume, R., Bayet, E., (2011) A&A, 525, p. A107
  • Robitaille, T.P., Whitney, B.A., Indebetouw, R., Wood, K., (2007) ApJS, 169 (2), p. 328
  • Roman-Duval, J., Jackson, J.M., Heyer, M., (2009) ApJ, 699 (2), p. 1153
  • Schaerer, D., De Koter, A., (1997) A&A, 322, p. 598
  • Schuller, F., Leurini, S., Hieret, C., (2006) A&A, 454, p. L87
  • Skrutskie, M.F., Cutri, R.M., Stiening, R., (2006) AJ, 131 (2), p. 1163
  • Stern, D., Eisenhardt, P., Gorjian, V., (2005) ApJ, 631 (1), p. 163
  • Stetson, P.B., (1987) PASP, 99, p. 191
  • Strom, K.M., Strom, S.E., Edwards, S., Cabrit, S., Skrutskie, M.F., (1989) AJ, 97, p. 1451
  • Takakuwa, S., Ohashi, N., Bourke, T.L., (2007) ApJ, 662 (1), p. 431
  • Tenorio-Tagle, G., (1979) A&A, 71, p. 59
  • Thompson, M.A., Urquhart, J.S., White, G.J., (2004) A&A, 415, p. 627
  • Thompson, M.A., White, G.J., Morgan, L.K., (2004) A&A, 414, p. 1017
  • Tremblin, P., Minier, V., Schneider, N., (2013) A&A, 560, p. A19
  • 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
  • Werner, M.W., Uchida, K.I., Sellgren, K., (2004) ApJS, 154 (1), p. 309
  • Wienen, M., Wyrowski, F., Schuller, F., (2012) A&A, 544, p. A146
  • Wilson, T.L., (1999) RPPh, 62, p. 143
  • Yamaguchi, R., Saito, H., Mizuno, N., (1999) PASJ, 51 (6), p. 791
  • Zacharias, N., Finch, C., Girard, T., (2010) AJ, 139 (6), p. 2184
  • Zavagno, A., Anderson, L.D., Russeil, D., (2010) A&A, 518, p. L101

Citas:

---------- APA ----------
Paron, S., Ortega, M.E., Dubner, G., Yuan, J.-H., Petriella, A., Giacani, E., Li, J.Z.,..., Zhang, S.-J. (2015) . H II REGION G46.5-0.2: THE INTERPLAY BETWEEN IONIZING RADIATION, MOLECULAR GAS, AND STAR FORMATION. Astronomical Journal, 149(6).
http://dx.doi.org/10.1088/0004-6256/149/6/193
---------- CHICAGO ----------
Paron, S., Ortega, M.E., Dubner, G., Yuan, J.-H., Petriella, A., Giacani, E., et al. "H II REGION G46.5-0.2: THE INTERPLAY BETWEEN IONIZING RADIATION, MOLECULAR GAS, AND STAR FORMATION" . Astronomical Journal 149, no. 6 (2015).
http://dx.doi.org/10.1088/0004-6256/149/6/193
---------- MLA ----------
Paron, S., Ortega, M.E., Dubner, G., Yuan, J.-H., Petriella, A., Giacani, E., et al. "H II REGION G46.5-0.2: THE INTERPLAY BETWEEN IONIZING RADIATION, MOLECULAR GAS, AND STAR FORMATION" . Astronomical Journal, vol. 149, no. 6, 2015.
http://dx.doi.org/10.1088/0004-6256/149/6/193
---------- VANCOUVER ----------
Paron, S., Ortega, M.E., Dubner, G., Yuan, J.-H., Petriella, A., Giacani, E., et al. H II REGION G46.5-0.2: THE INTERPLAY BETWEEN IONIZING RADIATION, MOLECULAR GAS, AND STAR FORMATION. Astron. J. 2015;149(6).
http://dx.doi.org/10.1088/0004-6256/149/6/193