2017A&A...597A..32V


Query : 2017A&A...597A..32V

2017A&A...597A..32V - Astronomy and Astrophysics, volume 597A, 32-32 (2017/1-1)

Cavity and other radial substructures in the disk around HD 97048.

VAN DER PLAS G., WRIGHT C.M., MENARD F., CASASSUS S., CANOVAS H., PINTE C., MADDISON S.T., MAASKANT K., AVENHAUS H., CIEZA L., PEREZ S. and UBACH C.

Abstract (from CDS):

Context. Gaps, cavities, and rings in circumstellar disks are signposts of disk evolution and planet-disk interactions. We follow the recent suggestion that Herbig Ae/Be disks with a flared disk harbor a cavity, and investigate the disk around HD 97048.
Aims. We aim to resolve the 34±4AU central cavity that has been predicted and to investigate the structure of the disk.
Methods. We imaged the disk around HD 97048 using ALMA at 0.85mm and 2.94mm and ATCA (multiple frequency) observations. Our observations also include the 12CO J=1-0, 12CO J=3-2 and HCO+ J=4-3 emission lines.
Results. A central cavity in the disk around HD 97048 is resolved with a 40-46AU radius. Additional radial structure present in the surface brightness profile can be accounted for either by an opacity gap at 90AU or by an additional emitting ring at 150AU. The continuum emission tracing the dust in the disk is detected out to 355AU. The 12CO J=3-2 disk is detected 2.4 times farther out. The 12CO emission can be traced down to ~=10AU scales. Apparent non-Keplerian kinematics are detected inside the cavity on the HCO+ J=4-3 velocity map. The mm spectral index measured from ATCA observations suggests that grain growth has occurred in the HD 97048 disk. Finally, we resolve a highly inclined disk out to 150AU around the nearby 0.5M binary ISO-ChaI 126.
Conclusions. The data presented here reveal a cavity in the disk of HD 97048, and prominent radial structure in the surface brightness. The cavity size varies for different continuum frequencies and gas tracers. The gas inside the cavity follows non-Keplerian kinematics seen in HCO+ emission. The variable cavity size along with the kinematical signature suggests the presence of a substellar companion or a massive planet inside the cavity.

Abstract Copyright: © ESO, 2016

Journal keyword(s): protoplanetary disks - stars: variables: T Tauri, Herbig Ae/Be - stars: individual: HD 97048

CDS comments: Calibrator J0137-2934 not identified.

Simbad objects: 24

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Number of rows : 24
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   ~ 1134 3
2 V* HL Tau Or* 04 31 38.5107609312 +18 13 57.859747968   15.89 14.49 14.39   K5 1337 0
3 EM* LkCa 15 Or* 04 39 17.7911622816 +22 21 03.390090984   13.01 12.03 11.61   K5:Ve 619 1
4 QSO B0537-441 BLL 05 38 50.3617339512 -44 05 08.940591924   15.77 16.48 16   ~ 836 2
5 ICRF J104742.9-621714 QSO 10 47 42.8780959656 -62 17 14.679865284   19.99       ~ 34 0
6 QSO B1057-797 BLL 10 58 43.3122762768 -80 03 54.163249236   19.08   17.31   ~ 168 0
7 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 1751 1
8 QSO B1104-445 QSO 11 07 08.6939907024 -44 49 07.618243620   17.84 18.2 17.37   ~ 214 1
9 ESO-HA 562 Or* 11 08 02.8789169712 -77 38 42.580139640     17.61   14.41 M0.5+M0.5 42 0
10 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 501 0
11 Ass Cha T 1-23 Or* 11 09 53.4189070920 -76 34 25.652641116   13.9 19.50 15.10 13.52 G9IIIe 83 0
12 HD 100546 Be* 11 33 25.4408872296 -70 11 41.241297948   6.71 6.30   6.64 A0VaekB8_lB 722 1
13 QSO B1145-676 QSO 11 47 33.3990858120 -67 53 41.774175276   19.66   16.6   ~ 47 1
14 V* T Cha Or* 11 57 13.5245085552 -79 21 31.530508884   10.00 11.86     K0e 256 1
15 V* DK Cha Or* 12 53 17.2111480272 -77 07 10.736046012           F0 136 0
16 3C 279 Bla 12 56 11.1663795384 -05 47 21.528432492   18.01 17.75 15.87   ~ 2888 2
17 QSO B1334-127 QSO 13 37 39.7829208840 -12 57 24.693846264   18.5 18.5 16.22   ~ 459 1
18 CPD-36 6759 Y*O 15 15 48.4460065200 -37 09 16.024369824   9.21 8.708     F8V 415 1
19 HD 142527 Ae* 15 56 41.8882637904 -42 19 23.248281828   9.04 8.34     F6III 563 1
20 THA 15-20 TT* 16 07 11.5873449384 -39 03 47.492129340   16.25 14.58 14.11 12.92 M0.5 91 0
21 HD 163296 Ae* 17 56 21.2881851168 -21 57 21.871819008 7.00 6.93 6.85 6.86 6.67 A1Vep 967 0
22 QSO B1921-293 BLL 19 24 51.0555700728 -29 14 30.118109640   18.71 18.21 15.07   ~ 776 0
23 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1099 1
24 3C 446 BLL 22 25 47.2594205952 -04 57 01.390436856   18.83 18.39 16.3   ~ 792 1

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2022.08.09-04:35:52

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