Imaging polarimetry of the potentially planet-forming circumstellar disk HD 142527: The NACO view

H. Canovas, F. Ménard, A. Hales, A. Jordán, M. R. Schreiber, S. Casassus, T. M. Gledhill, C. Pinte

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

HD 142527 is a unique protoplanetary disk in terms of planet formation. Its high accretion rate combined with its huge inner gap and short age make of it an ideal candidate for harboring forming planets. ALMA cycle-0 observations revealed gap crossing gas streams and showed that the millimeter-sized dust particles are distributed in a horse-shoe shape. Here we present our recent H- and Ks-band imaging polarimetry data of HD142527 obtained with VLT/NaCo. By means of polarimetry, we remove most of the stellar light, directly imaging the disk's inner regions. Our observations allow us to constrain the dust properties (size and porosity) on the surface of the outer disk. We also detect two regions of the disk with low emission ("nulls") both in polarized and unpolarized light. Intriguingly, one of these nulls is azimuthally coincident with the maximum of the horse-shoe shape detected by ALMA.

Original languageEnglish
Title of host publicationRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Subtitle of host publication14th Latin American Regional IAU Meeting, LARIM 2013; Florianopolis; Brazil; 24 November 2013 through 30 November 2013
Place of PublicationMexico
Pages4-4
Number of pages1
Volume44
Publication statusPublished - 1 Oct 2014
Externally publishedYes
Event14th Latin American Regional IAU Meeting, LARIM 2013 - Florianopolis, Brazil
Duration: 24 Nov 201330 Nov 2013

Publication series

NameRevista Mexicana de Astronomia y Astrofisica
ISSN (Print)0185-1101

Conference

Conference14th Latin American Regional IAU Meeting, LARIM 2013
CountryBrazil
CityFlorianopolis
Period24/11/1330/11/13

Cite this

Canovas, H., Ménard, F., Hales, A., Jordán, A., Schreiber, M. R., Casassus, S., Gledhill, T. M., & Pinte, C. (2014). Imaging polarimetry of the potentially planet-forming circumstellar disk HD 142527: The NACO view. In Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias: 14th Latin American Regional IAU Meeting, LARIM 2013; Florianopolis; Brazil; 24 November 2013 through 30 November 2013 (Vol. 44, pp. 4-4). (Revista Mexicana de Astronomia y Astrofisica)..