UNVEILING THE STRUCTURE OF PRE-TRANSITIONAL DISKS
Por:
Espaillat C., D'Alessio P., Hernández J., Nagel E., Luhman K.L., Watson D.M., Calvet N., Muzerolle J., McClure M.
Publicada:
1 jul 2010
Resumen:
In the past few years, several disks with inner holes that are relatively empty of small dust grains have been detected and are known as transitional disks. Recently, Spitzer has identified a new class of "pre-transitional disks" with gaps based on near-infrared photometry and mid-infrared spectra; these objects have an optically thick inner disk separated from an optically thick outer disk by an optically thin disk gap. A near-infrared spectrum provided the first confirmation of a gap in the pre-transitional disk of LkCa 15 by verifying that the near-infrared excess emission in this object was due to an optically thick inner disk. Here, we investigate the difference between the nature of the inner regions of transitional and pre-transitional disks using the same veiling-based technique to extract the near-infrared excess emission above the stellar photosphere. However, in this work we use detailed disk models to fit the excess continua as opposed to the simple blackbody fits previousl
Filiaciones:
Espaillat C.:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, United States
D'Alessio P.:
Univ Nacl Autonoma Mexico, Ctr Radioastron & Astrofis, Morelia 58089, Michoacan, Mexico
Hernández J.:
Centro de Investigaciones de Astronomía (CIDA), 5101-A Mérida, Venezuela
Nagel E.:
Departamento de Astronomía, Universidad de Guanajuato, México 36240, Guanajuato, Mexico
Luhman K.L.:
Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States
Center for Exoplanets and Habitable Worlds, Pennsylvania State University, University Park, PA 16802, United States
Watson D.M.:
Department of Physics and Astronomy, University of Rochester, NY 14627-0171, United States
Calvet N.:
Department of Astronomy, University of Michigan, 830 Dennison Building, 500 Church Street, Ann Arbor, MI 48109, United States
Muzerolle J.:
Space Telescope Institute, 3700 San Martin Drive, Baltimore, MD 21218, United States
McClure M.:
Department of Astronomy, University of Michigan, 830 Dennison Building, 500 Church Street, Ann Arbor, MI 48109, United States
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