NOAO >   Observing Info >   Approved Programs >   2017A-0409

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Program Information for 2017A-0409


PI: Lucas Cieza, Universidad Diego Portales, lucas.cieza@mail.udp.cl
Address: Av Ejercito 441, Santiago Chile

CoI: David Principe, MIT
CoI: Roberto Gamen, Universidad de La Plata
CoI: Jonathan Williams, U. of Hawaii
CoI: Simon Casassus, Universidad de Chile
CoI: Matthias Schreiber, Universidad de Valparaiso
CoI: Alice Zurlo, Universidad Diego Portales
CoI: Hector Canovas, Universidad Autonoma de Madrid
CoI: Valentin Christiaens, Universidad de Chile
CoI: William Dent, Joint Alma Observatory
CoI: Santiago Orcajo, U. Nacional de la Plata

Title: Spectroscopic characterization for the Ophiuchis DIsk Survey Employing ALMA (ODISEA)

Abstract: We request 20.2 hs of GMOS (Gemini-South) time to help completing the spectroscopic characterization of the ALMA targets in the ODISEA project, a resolved imaging survey of the entire population of protoplanetary disks (289 objects) identified by Spitzer in Ophiuchus. This will be, by far, the largest ALMA study of its kind. One of the main objectives of this survey is to constrain planet formation potential by measuring the mass, size, and surface density profile of circumstellar disks as a function of age over the entire Initial Mass Function. However, taking full advantage of the ALMA survey requires a complete spectroscopic characterization of the sample, which we plan to do with Gemini-GMOS (this proposal), Gemini-GNIRS, and VLT-X-SHOOTER. Combining our spectroscopic data with our ALMA survey, we will address fundamental questions in the field, including: what types of planetary systems (e.g., with and without giant planets) can form around different types of stars and brown dwarfs? What population of planets can be expected from the full population of disks in Ophiuchus? What is the correlation between disk properties and stellar accretion rates? What is the relative importance of accretion as a disk dispersal mechanism (vs photoevaporation and disk winds) as a function of (sub)stellar mass?

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017A):  GEM-SQ/GMOSS -- 8.5hrs band 2 (GS-2017A-Q-52)


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NOAO >   Observing Info >   Approved Programs >   2017A-0409

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