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

Radial decoupling of small and large dust grains in the transitional disk RX J1615.3-3255

Abstract : We present H-band (1.6 μm) scattered light observations of the transitional disk RX J1615.3-3255, located in the 1 Myr old Lupus association. From a polarized intensity image, taken with the HiCIAO instrument of the Subaru Telescope, we deduce the position angle and the inclination angle of the disk. The disk is found to extend out to 68 ± 12 AU in scattered light and no clear structure is observed. Our inner working angle of 24 AU does not allow us to detect a central decrease in intensity similar to that seen at 30 AU in the 880 μm continuum observations. We compare the observations with multiple disk models based on the spectral energy distribution (SED) and submm interferometry and find that an inner rim of the outer disk at 30 AU containing small silicate grains produces a polarized intensity signal which is an order of magnitude larger than observed. We show that a model in which the small dust grains extend smoothly into the cavity found for large grains is closer to the actual H-band observations. A comparison of models with different dust size distributions suggests that the dust in the disk might have undergone significant processing compared to the interstellar medium.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03692546
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Friday, June 10, 2022 - 7:17:51 AM
Last modification on : Saturday, June 25, 2022 - 3:06:13 AM

File

aa28696-16.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Robin Kooistra, Inga Kamp, Misato Fukagawa, François Ménard, Munetake Momose, et al.. Radial decoupling of small and large dust grains in the transitional disk RX J1615.3-3255. Astronomy & Astrophysics, 2017, 597, ⟨10.1051/0004-6361/201628696⟩. ⟨insu-03692546⟩

Share

Metrics

Record views

8

Files downloads

0