Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

A Multi-wavelength Analysis of Dust and Gas in the SR 24S Transition Disk

Abstract : We present new Atacama Large Millimeter/sub-millimeter Array (ALMA) 1.3 mm continuum observations of the SR 24S transition disk with an angular resolution ≲ 0\buildrel{ \prime}\over{.} 18 (12 au radius). We perform a multi-wavelength investigation by combining new data with previous ALMA data at 0.45 mm. The visibilities and images of the continuum emission at the two wavelengths are well characterized by a ring-like emission. Visibility modeling finds that the ring-like emission is narrower at longer wavelengths, in good agreement with models of dust-trapping in pressure bumps, although there are complex residuals that suggest potentially asymmetric structures. The 0.45 mm emission has a shallower profile inside the central cavity than the 1.3 mm emission. In addition, we find that the 13CO and C18O (J = 2-1) emission peaks at the center of the continuum cavity. We do not detect either continuum or gas emission from the northern companion to this system (SR 24N), which is itself a binary system. The upper limit for the dust disk mass of SR 24N is ≲ 0.12 {M}\bigoplus , which gives a disk mass ratio in dust between the two components of {M}{dust,{SR}24{{S}}}/{M}{dust,{SR}24{{N}}}≳ 840. The current ALMA observations may imply that either planets have already formed in the SR 24N disk or that dust growth to millimeter sizes is inhibited there and that only warm gas, as seen by rovibrational CO emission inside the truncation radii of the binary, is present.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03692522
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Thursday, June 9, 2022 - 6:05:59 PM
Last modification on : Saturday, June 25, 2022 - 3:06:21 AM

Links full text

Identifiers

Collections

Citation

P. Pinilla, L. M. Pérez, S. Andrews, N. van Der Marel, E. F. van Dishoeck, et al.. A Multi-wavelength Analysis of Dust and Gas in the SR 24S Transition Disk. The Astrophysical Journal, 2017, 839, ⟨10.3847/1538-4357/aa6973⟩. ⟨insu-03692522⟩

Share

Metrics

Record views

3