The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga

As part of an ongoing program aiming to characterize a large number of Spitzer-selected transition disks (disks with reduced levels of near-IR and/or mid-IR excess emission), we have obtained (sub)millimeter wavelength photometry, high-resolution optical spectroscopy, and adaptive optics near-infrar...

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Detalles Bibliográficos
Autores principales: Cieza, Lucas A., Schreiber, Matthias R., Romero, Gisela Andrea, Williams, Jonathan P., Rebassa-Mansergas, Alberto, Merín, Bruno
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Astronómicas
binaries: general
circumstellar matter
protoplanetary disks
stars: pre-main sequence
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84693
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84693
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
binaries: general
circumstellar matter
protoplanetary disks
stars: pre-main sequence
spellingShingle Ciencias Astronómicas
binaries: general
circumstellar matter
protoplanetary disks
stars: pre-main sequence
Cieza, Lucas A.
Schreiber, Matthias R.
Romero, Gisela Andrea
Williams, Jonathan P.
Rebassa-Mansergas, Alberto
Merín, Bruno
The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga
topic_facet Ciencias Astronómicas
binaries: general
circumstellar matter
protoplanetary disks
stars: pre-main sequence
description As part of an ongoing program aiming to characterize a large number of Spitzer-selected transition disks (disks with reduced levels of near-IR and/or mid-IR excess emission), we have obtained (sub)millimeter wavelength photometry, high-resolution optical spectroscopy, and adaptive optics near-infrared imaging for a sample of 31 transition objects located in the Perseus, Taurus, and Auriga molecular clouds. We use these ground-based data to estimate disk masses, multiplicity, and accretion rates in order to investigate the mechanisms potentially responsible for their inner holes. Following our previous studies in other regions, we combine disk masses, accretion rates, and multiplicity data with other information, such as spectral energy distribution morphology and fractional disk luminosity, to classify the disks as strong candidates for the following categories: grain-growth-dominated disks (seven objects), giant planet-forming disks (six objects), photoevaporating disks (seven objects), debris disks (11 objects), and cicumbinary disks (one object, which was also classified as a photoevaporating disk). Combining our sample of 31 transition disks with those from our previous studies results in a sample of 74 transition objects that have been selected, characterized, and classified in a homogenous way. We discuss this combined high-quality sample in the context of the current paradigm of the evolution and dissipation of protoplanetary disks and use its properties to constrain different aspects of the key processes driving their evolution. We find that the age distribution of disks that are likely to harbor recently formed giant planets favors core accretion as the main planet formation mechanism and a 2-3Myr formation timescale.
format Articulo
Articulo
author Cieza, Lucas A.
Schreiber, Matthias R.
Romero, Gisela Andrea
Williams, Jonathan P.
Rebassa-Mansergas, Alberto
Merín, Bruno
author_facet Cieza, Lucas A.
Schreiber, Matthias R.
Romero, Gisela Andrea
Williams, Jonathan P.
Rebassa-Mansergas, Alberto
Merín, Bruno
author_sort Cieza, Lucas A.
title The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga
title_short The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga
title_full The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga
title_fullStr The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga
title_full_unstemmed The nature of transition circumstellar disks : III. Perseus, Taurus, and Auriga
title_sort nature of transition circumstellar disks : iii. perseus, taurus, and auriga
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/84693
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