2007A&A...461..983V


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.20CEST04:21:07

2007A&A...461..983V - Astronomy and Astrophysics, volume 461, 983-990 (2007/1-3)

Searching for gas-rich disks around T Tauri stars in Lupus.

VAN KEMPEN T.A., VAN DISHOECK E.F., BRINCH C. and HOGERHEIJDE M.R.

Abstract (from CDS):

We characterize the molecular environment of classical T Tauri stars in Lupus observed with the Spitzer Space Telescope in our search for gas-rich disks toward these sources. Submillimeter observations of 12CO, 13CO, and C18O in the J=3-2 and 2-1 lines were obtained with the James Clerk Maxwell Telescope toward a sample of 21 T Tauri stars with disks in the Lupus molecular clouds. Pointings at the sources and at selected off-positions are presented in order to disentangle material associated with disks from ambient cloud material. One source, IM Lup (Sz 82), was found with the double-peaked 12CO and 13CO profiles characteristic of a large rotating gas disk. The inclination of the disk is found to be ∼20°, with an outer radius of 400-700AU. For most other sources, including GQ Lup with its substellar companion, the single-dish 12CO lines are dominated by extended cloud emission with a complex velocity structure. No evidence of molecular outflows is found. Due to dense circumstellar material, compact C18O emission was detected toward only two sources. Future searches for gas-rich disks in Lupus should either use interferometers or perform very deep single-dish integrations in dense gas tracers to separate the cloud and disk emission.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - radiative transfer - methods: observational - stars: pre-main sequence - radio lines: ISM - stars: circumstellar matter

Simbad objects: 33

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Number of rows : 33

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Tau-Aur Region SFR 04 30 +25.0           ~ 1180 1
2 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3308 0
3 NAME Chamaeleon Region SFR 12 00 -79.0           ~ 168 1
4 NAME Lupus I Cld 15 43 02.1 -34 09 06           ~ 214 0
5 CD-33 10685 TT* 15 45 12.8670160092 -34 17 30.646921079 12.47 11.56 10.224 9.60 8.685 K3Ve 208 1
6 V* GW Lup TT* 15 46 44.7292759994 -34 30 35.677245389   13.8       M1.5e 74 0
7 V* HM Lup TT* 15 47 50.6290613485 -35 28 35.404500425   15.96       M3e 57 0
8 THA 15-5 TT* 15 47 56.9433443193 -35 14 34.797849332   14.5 16.2     K7e 58 0
9 CD-35 10525 TT* 15 49 12.102 -35 39 05.12 12.19 12.36 11.40     K7Ve 229 1
10 THA 15-12 TT* 15 56 09.17658 -37 56 06.1193   10.7       M0e 214 0
11 V* RU Lup TT* 15 56 42.3109948086 -37 49 15.473469159 9.27 10.07 9.60     K7/M0e 368 0
12 NAME Lup II MoC 15 57 08 -37 47.1           ~ 90 1
13 Sz 84 TT* 15 58 02.5212129160 -37 36 02.733294310   14.3       M5.0e 47 0
14 V* RY Lup TT* 15 59 28.3852522995 -40 21 51.255321659   12.62 9.90     G8/K1IV-V 157 0
15 NAME Lup Cloud SFR 16 03 -38.1           ~ 481 0
16 HD 325367 TT* 16 03 05.4914377137 -40 18 25.426543472   11.40 8.50     M0 268 0
17 NAME Lupus IV MoC 16 03 12.4 -42 07 43           ~ 121 0
18 THA 15-18 TT* 16 07 00.605 -39 02 19.37           M1e 62 0
19 Sz 96 TT* 16 08 12.6306575418 -39 08 33.469578208   14.80 13.43 13.69 11.84 ~ 60 0
20 WRAY 16-203 TT* 16 08 29.7086692265 -39 03 10.994386198   16.26 15.91 15.38 15.69 K0: 148 1
21 V* V856 Sco dS* 16 08 34.2868591379 -39 06 18.326059778 7.66 7.41 7.05 6.92   A7 343 0
22 V* V1027 Sco a2* 16 08 34.5611688784 -39 05 34.277434873   6.552 6.629 6.66   A0/3III 174 0
23 Sz 107 Y*O 16 08 41.7994782799 -39 01 37.026638986   17.31 16.06 15.42 13.20 M5.5 28 0
24 V* V1191 Sco Or* 16 08 48.1619848697 -39 04 19.194935312   18.23 16.43 15.71 13.57 M6.5 20 0
25 V* V1193 Sco Or* 16 08 51.5694611925 -39 03 17.705756264   15.27 14.58 13.72 12.28 M4.5 51 0
26 THA 15-33 TT* 16 08 54.6847312618 -39 37 43.145460615   15.34 13.98 13.29   M1IVe 58 0
27 THA 15-35 TT* 16 09 01.8488471357 -39 05 12.416220509   15.33 14.12 14.35 12.54 M5.5 63 0
28 NAME Lupus III SFR 16 09.6 -39 03           ~ 262 0
29 THA 15-37 Y*O 16 09 44.3608441561 -39 13 30.167268370   15.84 14.59 14.20 12.38 M2 43 0
30 Sz 118 Y*O 16 09 48.6557347813 -39 11 16.846032967   18.32 16.90 16.61 15.00 K6 43 0
31 THA 15-42 Y*O 16 10 51.5851116158 -38 53 13.768173219   15.89 14.48 14.44 12.95 M1e 50 0
32 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2929 0
33 NAME CrA Complex reg 19 15 00.0 -37 30 00           ~ 101 1

    Equat.    Gal    SGal    Ecl

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2019.10.20-04:21:07

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