The Ophiuchus DIsc Survey Employing ALMA (ODISEA) – III. The evolution of substructures in massive discs at 3–5 au resolution
| Autor: | David A. Principe, Daniel J. Price, Alice Zurlo, Laura M. Pérez, P. Pinilla, Mario Flock, Nicolás T. Kurtovic, Sebastián Pérez, Jonathan Williams, Lucas A. Cieza, Hector Canovas, Antonio Hales, Carla Arce-Tord, Pedro H Nogueira, Camilo González-Ruilova, Dary Ruíz-Rodríguez, Sebastian Marino, Simon Casassus |
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| Rok vydání: | 2020 |
| Předmět: |
Earth and Planetary Astrophysics (astro-ph.EP)
Physics education.field_of_study 010308 nuclear & particles physics Continuum (design consultancy) Resolution (electron density) Population Demographic study FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Astrophysics - Solar and Stellar Astrophysics 13. Climate action Space and Planetary Science Planet 0103 physical sciences Ophiuchus Astrophysics::Earth and Planetary Astrophysics education 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/staa3787 |
| Popis: | We present 1.3 mm continuum ALMA long-baseline observations at 3-5 au resolution of 10 of the brightest discs from the Ophiuchus DIsc Survey Employing ALMA (ODISEA) project. We identify a total of 26 narrow rings and gaps distributed in 8 sources and 3 discs with small dust cavities (r $$20 au). We find that the 1.3 mm radial profiles of these objects are in good agreement with those produced by numerical simulations of dust evolution and planet-disc interactions, which predict the accumulation of mm-sized grains at the edges of planet-induced cavities. Our long-baseline observations resulted in the largest sample of discs observed at $\sim$3-5 au resolution in any given star-forming region (15 objects when combined with Ophiuchus objects in the DSHARP Large Program) and allow for a demographic study of the brightest $\sim5\%$ of the discs in Ophiuchus (i.e. the most likely formation sites of giant planets in the cloud). We use this unique sample to propose an evolutionary sequence and discuss a scenario in which the substructures observed in massive protoplanetary discs are mainly the result of planet formation and dust evolution. If this scenario is correct, the detailed study of disc substructures might provide a window to investigate a population of planets that remains mostly undetectable by other techniques. Comment: 21 pages, 10 figures. Appendix with 3 additional figures. Version 2, identical to previous one, but now accepted for publication (in MNRAS) |
| Databáze: | OpenAIRE |
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