2017A&A...607A..55V


Query : 2017A&A...607A..55V

2017A&A...607A..55V - Astronomy and Astrophysics, volume 607A, 55-55 (2017/11-1)

An 80 au cavity in the disk around HD 34282.

VAN DER PLAS G., MENARD F., CANOVAS H., AVENHAUS H., CASASSUS S., PINTE C., CACERES C. and CIEZA L.

Abstract (from CDS):

Context. Large cavities in disks are important testing grounds for the mechanisms proposed to drive disk evolution and dispersion, such as dynamical clearing by planets and photoevaporation.
Aims. We aim to resolve the large cavity in the disk around HD 34282, whose presence has been predicted by previous studies modeling the spectral energy distribution of the disk.
Methods. Using ALMA band 7 observations we studied HD 34282 with a spatial resolution of 0.10''x0.17'' at 345GHz.
Results. We resolve the disk around HD 34282 into a ring between 0.24'' and 1.15'' (78+7–11 and 374+33–54 au adopting a distance of 325+29–47pc). The emission in this ring shows azimuthal asymmetry centered at a radial distance of 0.46'' and a position angle of 135° and an azimuthal FWHM of 51°. We detect CO emission both inside the disk cavity and as far out as 2.7 times the radial extent of the dust emission.
Conclusions. Both the large disk cavity and the azimuthal structure in the disk around HD 34282 can be explained by the presence of a 50Mjup brown dwarf companion at a separation of ~=0.1''.

Abstract Copyright: © ESO, 2017

Journal keyword(s): stars: variables: T Tauri, Herbig Ae/Be - protoplanetary disks - protoplanetary disks

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 QSO B0420-0127 QSO 04 23 15.8007747432 -01 20 33.063518580   17.50 17.00 16.28   ~ 1137 3
2 4C -02.19 QSO 05 01 12.8099394264 -01 59 14.258630148   19.1 18.4 19.04   ~ 547 1
3 V* V1366 Ori Ae* 05 16 00.4765181328 -09 48 35.393784012 10.19 10.16 9.84 9.77 9.63 B9.5V 185 0
4 QSO B0521-365 BLL 05 22 57.9841341216 -36 27 30.847204512   15.26 14.62 14.48   ~ 782 2
5 ICRF J054255.8-091331 Bz? 05 42 55.8774826 -09 13 31.005835       23.77   ~ 26 0
6 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 1759 1
7 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 504 0
8 HD 100546 Be* 11 33 25.4408872296 -70 11 41.241297948   6.71 6.30   6.64 A0VaekB8_lB 729 1
9 CPD-36 6759 Y*O 15 15 48.4460065200 -37 09 16.024369824   9.21 8.708     F8V 418 1
10 HD 142527 Ae* 15 56 41.8882637904 -42 19 23.248281828   9.04 8.34     F6III 571 1
11 THA 15-20 TT* 16 07 11.5873449384 -39 03 47.492129340   16.25 14.58 14.11 12.92 M0.5 93 0
12 EM* AS 209 Or* 16 49 15.3034917000 -14 22 08.643317664   12.62 11.28     K4Ve 317 0
13 HD 163296 Ae* 17 56 21.2881851168 -21 57 21.871819008 7.00 6.93 6.85 6.86 6.67 A1Vep 976 0

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2022.09.26-02:53:16

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