Navegar

Colección

Datos Estadísticas

Artículo

Orellana, M.; Cieza, L.A.; Schreiber, M.R.; Merín, B.; Brown, J.M.; Pellizza, L.J.; Romero, G.A. "Transition disks: Four candidates for ongoing giant planet formation in Ophiuchus" (2012) Astronomy and Astrophysics. 539
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:

Among the large set of Spitzer-selected transitional disks that we have examined in the Ophiuchus molecular, four disks have been identified as (giant) planet-forming candidates based on the morphology of their spectral energy distributions (SEDs), their apparent lack of stellar companions, and evidence of accretion. Here we characterize the structures of these disks modeling their optical, infrared, and (sub)millimeter SEDs. We use the Monte Carlo radiative transfer package RADMC to construct a parametric model of the dust distribution in a flared disk with an inner cavity and calculate the temperature structure that is consistent with the density profile, when the disk is in thermal equilibrium with the irradiating star. For each object, we conducted a Bayesian exploration of the parameter space generating Monte Carlo Markov chains (MCMC) that allow the identification of the best-fit model parameters and to constrain their range of statistical confidence. Our calculations imply that evacuated cavities with radii ∼2-8 AU are present that appear to have been carved by embedded giant planets. We found parameter values that are consistent with those previously given in the literature, indicating that there has been a mild degree of grain growth and dust settling, which deserves to be investigated with further modeling and follow-up observations. Resolved images with (sub)millimeter interferometers would be required to break some of the degeneracies of the models and more tightly constrain the physical properties of these fascinating disks. © 2012 ESO.

Registro:

Documento: Artículo
Título:Transition disks: Four candidates for ongoing giant planet formation in Ophiuchus
Autor:Orellana, M.; Cieza, L.A.; Schreiber, M.R.; Merín, B.; Brown, J.M.; Pellizza, L.J.; Romero, G.A.
Filiación:Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Departamento de Física y Astronomía, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile
Institute for Astronomy, University of Hawaii at Manoa, Honolulu, HI 96822, United States
Herschel Science Centre, European Space Astronomy Centre (ESA), PO Box 78, 28691 Villanueva de la Cañada (Madrid), Spain
Harvard-Smithsonian Center for Astrophysics, MS 78, 60 Garden St., Cambridge, MA 02138, United States
Instituto de Astronomía y Física del Espacio, C.C. 67, Suc. 28, 1428 Buenos Aires, Argentina
Palabras clave:protoplanetary disks; stars: pre-main sequence; submillimeter: planetary systems; Best-fit model parameters; Density profile; Dust distribution; Dust settling; Giant planet formation; Giant planets; Inner cavities; MONTE CARLO; Monte Carlo Markov chain; Parameter spaces; Parameter values; Parametric models; Protoplanetary disks; Spectral energy distribution; stars: pre-main sequence; Statistical confidence; Submillimeter: planetary systems; Temperature structure; Thermal equilibriums; Grain growth; Stars; Dust
Año:2012
Volumen:539
DOI: http://dx.doi.org/10.1051/0004-6361/201117659
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v539_n_p_Orellana

Referencias:

  • Andrews, S.M., Williams, J.P., (2005) ApJ, 631, p. 1134
  • Andrews, S.M., Williams, J.P., (2007) ApJ, 671, p. 1800
  • Andrews, S.M., Wilner, D.J., Hughes, A.M., (2009) ApJ, 700, p. 1502
  • Andrews, S.M., Wilner, D.J., Hughes, A.M., (2010) ApJ, 723, p. 1241
  • Andrews, S.M., Czekala, I., Wilner, D.J., (2010) ApJ, 710, p. 462
  • Andrews, S.M., Wilner, D.J., Espaillat, C., (2011) ApJ, 732, p. 42
  • Brown, J.M., Blake, G.A., Qi, C., (2008) ApJ, 675, pp. L109
  • Brown, J.M., Blake, G.A., Qi, C., (2009) ApJ, 704, p. 496
  • Chiang, E.I., Goldreich, P., (1997) ApJ, 490, p. 368
  • Cieza, L.A., (2008) ASPC, New Horizons Astron., 393, p. 35
  • Cieza, L., Padgett, D.L., Stapelfeldt, K.R., (2007) ApJ, 667, p. 308
  • Cieza, L.A., Schreiber, M.R., Romero, G.A., (2010) ApJ, 712, p. 925. , (Paper I)
  • Dominik, C., Blum, J., Cuzzi, J.N., Wurm, G., (2007) Protostars and Planets v, p. 783. , (University of Arizona Press)
  • Dullemond, C.P., Dominik, C., (2004) A&A, 417, p. 159
  • Ford, E.B., (2005) ApJ, 129, p. 1706
  • Furlan, E., Hartmann, L., Calvet, N., (2006) ApJS, 165, p. 568
  • Gregory, P., (2005) Bayesian Logical Data Analysis for the Physical Sciences, , Cambridge University Press
  • Huélamo, N., Lacour, S., Tuthill, P., (2011) A&A, 528, pp. L7
  • Hughes, A.M., Wilner, D.J., Calvet, N., (2007) ApJ, 664, p. 536
  • Hughes, A.M., Andrews, S.M., (2009) ApJ, 698, p. 131
  • Isella, A., Carpenter, J.M., Sargent, A.I., (2009) ApJ, 701, p. 260
  • Loinard, L., Torres, R.M., Mioduszewski, A.J., Rodríguez, L.F., (2008) ApJ, 675, pp. L29
  • McClure, M.K., Furlan, E., Manoj, P., (2010) ApJS, 188, p. 75
  • Merín, B., Brown, J.M., Oliveira, I., (2010) ApJ, 718, p. 1200
  • Najita, J.R., Strom, S.E., Muzerolle, J., (2007) MNRAS, 378, p. 369
  • Natta, A., Testi, L., Muzerolle, J., (2004) A&A, 424, p. 603
  • Nutter, D., Ward-Thompson, D., André, P., (2006) MNRAS, 368, p. 1833
  • Piétu, V., Dutrey, A., Guilloteau, S., (2006) A&A, 460, pp. L43
  • Pinte, C., Ménard, F., Berger, J.P., (2007) ApJ, 673, pp. L63
  • Press, W.H., Flannery, B.P., Teukols, S.A., (1992) C Numerical Recipes, , Cambridge University Press
  • Siess, L., Dufour, E., Forestini, M., (2000) A&A, 358, p. 593
  • Robitaille, T.P., Whitney, B.A., Indebetouw, R., Wood, K., (2007) ApJS, 169, p. 328
  • Varniére, P., Blackman, E.G., Frank, A., Quillen, A.C., (2006) ApJ, 640, p. 1110
  • Williams, J.P., Cieza, L.A., (2011) A&ARA, 49, p. 67. , 2011

Citas:

---------- APA ----------
Orellana, M., Cieza, L.A., Schreiber, M.R., Merín, B., Brown, J.M., Pellizza, L.J. & Romero, G.A. (2012) . Transition disks: Four candidates for ongoing giant planet formation in Ophiuchus. Astronomy and Astrophysics, 539.
http://dx.doi.org/10.1051/0004-6361/201117659
---------- CHICAGO ----------
Orellana, M., Cieza, L.A., Schreiber, M.R., Merín, B., Brown, J.M., Pellizza, L.J., et al. "Transition disks: Four candidates for ongoing giant planet formation in Ophiuchus" . Astronomy and Astrophysics 539 (2012).
http://dx.doi.org/10.1051/0004-6361/201117659
---------- MLA ----------
Orellana, M., Cieza, L.A., Schreiber, M.R., Merín, B., Brown, J.M., Pellizza, L.J., et al. "Transition disks: Four candidates for ongoing giant planet formation in Ophiuchus" . Astronomy and Astrophysics, vol. 539, 2012.
http://dx.doi.org/10.1051/0004-6361/201117659
---------- VANCOUVER ----------
Orellana, M., Cieza, L.A., Schreiber, M.R., Merín, B., Brown, J.M., Pellizza, L.J., et al. Transition disks: Four candidates for ongoing giant planet formation in Ophiuchus. Astron. Astrophys. 2012;539.
http://dx.doi.org/10.1051/0004-6361/201117659