The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - I: project description and continuum images at 28 au resolution - Archive ouverte HAL Access content directly
Journal Articles Monthly Notices of the Royal Astronomical Society Year : 2019

The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - I: project description and continuum images at 28 au resolution

, , , , , , , , , , , , , , , , , , , , , , (1)
1
Lucas A. Cieza
  • Function : Author
Dary Ruíz-Rodríguez
  • Function : Author
Antonio Hales
  • Function : Author
Simon Casassus
  • Function : Author
Sebastian Pérez
  • Function : Author
Camilo Gonzalez-Ruilova
  • Function : Author
Hector Cánovas
  • Function : Author
Jonathan P. Williams
  • Function : Author
Alice Zurlo
  • Function : Author
Megan Ansdell
  • Function : Author
Henning Avenhaus
  • Function : Author
Amelia Bayo
  • Function : Author
Gesa H. -M. Bertrang
  • Function : Author
Valentin Christiaens
  • Function : Author
William Dent
  • Function : Author
Gabriel Ferrero
  • Function : Author
Roberto Gamen
  • Function : Author
Johan Olofsson
  • Function : Author
Santiago Orcajo
  • Function : Author
Karla Peña Ramírez
  • Function : Author
David Principe
  • Function : Author
Matthias R. Schreiber
  • Function : Author

Abstract

We introduce the Ophiuchus DIsc Survey Employing ALMA (ODISEA), a project aiming to study the entire population of Spitzer-selected protoplanetary discs in the Ophiuchus Molecular Cloud (∼300 objects) from both millimetre continuum and CO isotopologues data. Here we present 1.3 mm/230 GHz continuum images of 147 targets at 0.2 arcsec (28 au) resolution and a typical rms of 0.15 mJy. We detect a total of 133 discs, including the individual components of 11 binary systems and 1 triple system. 60 of these discs are spatially resolved. We find clear substructures (inner cavities, rings, gaps, and/or spiral arms) in eight of the sources and hints of such structures in another four discs. We construct the disc luminosity function for our targets and perform preliminary comparisons to other regions. A simple conversion between flux and dust mass (adopting standard assumptions) indicates that all discs detected at 1.3 mm are massive enough to form one or more rocky planets. In contrast, only ∼50 discs (∼1/3 of the sample) have enough mass in the form of dust to form the canonical 10 M core needed to trigger runaway gas accretion and the formation of gas giant planets, although the total mass of solids already incorporated into bodies larger than cm scales is mostly unconstrained. The distribution in continuum disc sizes in our sample is heavily weighted towards compact discs: most detected discs have radii < 15 au, while only 23 discs ({∼ }15{{ per cent}} of the targets) have radii > 30 au.
Fichier principal
Vignette du fichier
sty2653.pdf (15.19 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03704147 , version 1 (24-06-2022)

Identifiers

Cite

Lucas A. Cieza, Dary Ruíz-Rodríguez, Antonio Hales, Simon Casassus, Sebastian Pérez, et al.. The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - I: project description and continuum images at 28 au resolution. Monthly Notices of the Royal Astronomical Society, 2019, 482, pp.698-714. ⟨10.1093/mnras/sty2653⟩. ⟨insu-03704147⟩
19 View
3 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More