A dataset provided by the European Space Agency

Name OT1_asicilia_1
Title Tracing global protoplanetary disk dispersal and evolution in Cep OB2
URL

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DOI 10.5270/esa-hs6rwum
Author sicilia-aguilar, a.
Description We propose to use Herschel PACS photometry observations at 70 and 160 microns to study the global structure of protoplanetary disks in different stages of evolution. Our goal is to determine the contribution of the various physical disk dispersal mechanisms (grain growth-settling, planet formation, photoevaporation) for a uniform sample of disks with different ages and stellar masses. Far-IR observations are extremely sensitive to the global disk properties (flaring, small dust grain depletion, total disk mass). The data will constrain the disk structure as well as the way evolution proceeds (inside-out evolution versus homologous depletion), revealing the effects of the different dispersal mechanisms and their interplay depending on the age and mass of the systems. We will study a large sample of disks in the Cep OB2 region, which contains three populations with ages 1, 4, and 12 Myr. Cep OB2 has been extensively studied at optical and IR(Spitzer) wavelengths, so the properties of these stars and their inner disks (including the presence of gas and accretion)have been determined. Millimeter observations are also available for 32 objects. The sample contains 59 disks (observed with IRS) plus ~120 additional cluster members for which we have optical, IRAC and MIPS data. The disks span a wide range of SED types, from flared, primordial disks with small grains to flattened objects without silicate features and transition objects with cleared or optically thin inner disks, and also show differences in the gas content and accretion. By combining the PACS photometry with our available multiwavelength data and our RADMC radiative transfer code for disk modeling, we will be able to trace the global disk structure-dust content of the objects. We will then examine the global trends of disk structure and evolutionary status within the full sample, checking its dependency of age and stellar mass in order to u...
Publication The Herschel-PACS view of the Cep OB2 region: Global protoplanetary disk evolution and clumpy star formation . Sicilia-Aguilar Aurora et al. . Astronomy & Astrophysics, Volume 573, id.A19, 39 pp. . 573 . 10.1051\/0004-6361\/201424669 . 2015A&A...573A..19S ,
Instrument PACS_PacsPhoto_largeScan
Temporal Coverage 2012-11-29T04:11:27Z/2013-01-23T07:07:28Z
Version SPG v14.2.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-07-23T06:58:27Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-07-23T06:58:27Z, OT1_asicilia_1, SPG v14.2.0. https://doi.org/10.5270/esa-hs6rwum