2018A&A...616A..88V


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST19:03:39

2018A&A...616A..88V - Astronomy and Astrophysics, volume 616A, 88-88 (2018/8-1)

V1094 Scorpii: A rare giant multi-ringed disk around a T Tauri star.

VAN TERWISGA S.E., VAN DISHOECK E.F., ANSDELL M., VAN DER MAREL N., TESTI L., WILLIAMS J.P., FACCHINI S., TAZZARI M., HOGERHEIJDE M.R., TRAPMAN L., MANARA C.F., MIOTELLO A., MAUD L.T. and HARSONO D.

Abstract (from CDS):


Context. A wide variety of ring-like dust structures have been detected in protoplanetary disks, but their origin and frequency are still unclear.
Aims. We aim to characterize the structure of an extended, multi-ringed disk discovered serendipitously in the Atacama Large Millimeter/submillimeter Array (ALMA) Lupus disk survey and put it in the context of the Lupus disk population.
Methods. ALMA observations in Band 6 at 234GHz and Band 7 at 328GHz at 0.3'' resolution toward the K6 star V1094 Sco in Lupus III are presented, and its disk structure analyzed. The spectral index αmm is determined in the inner 150AU of the disk.
Results. The ALMA continuum data show a very extended disk with two gap-ring pairs. The gaps are located at 100AU and 170AU, the bright rings at 130AU and 220AU. Continuum emission is detected out to a 300AU distance, similar to IM Lup but a factor of five larger than typically found for Lupus disks at this sensitivity and resolution. The bright central region of the disk (within 35AU) is possibly optically thick at 1mm wavelengths, and has a brightness temperature of only 13K. The spectral index increases between the inner disk and the first ring at the location of the first gap.
Conclusions. Due to the low temperature of the disk midplane, snow lines can be excluded as the drivers behind the ring and gap formation in this disk. Disks the size of V1094 Sco are rare, and only 2.1±1.5% of disks in Lupus show continuum emission beyond 200AU. Possible connections between the large primordial disk population, transition disks, and exoplanets are discussed.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: pre-main sequence - stars: individual: V1094 Sco - techniques: interferometric - protoplanetary disks

Simbad objects: 21

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Number of rows : 21

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* HL Tau Or* 04 31 38.471952 +18 13 58.08504   15.89 14.49 14.39   K5 1201 0
2 V* V883 Ori Or* 05 38 18.0974260202 -07 02 25.963144400   14.80       F:I: 107 0
3 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1532 1
4 QSO B1424-41 QSO 14 27 56.29756536 -42 06 19.4375991   18.48 17.7 16.30   ~ 353 1
5 QSO B1514-24 BLL 15 17 41.8135246339 -24 22 19.482167214   15.13 14.00 13.95   ~ 645 3
6 CD-35 10525 Or* 15 49 12.1055573607 -35 39 05.053991067 12.19 12.76 11.66 11.15   K7Ve 237 0
7 Sz 76 TT* 15 49 30.7354526514 -35 49 51.418314548   14.4       M3.2 33 0
8 Sz 77 TT* 15 51 46.9579216483 -35 56 44.112995611   12.0       K5.5 53 0
9 WRAY 15-1384 TT* 15 56 02.0991789524 -36 55 28.274442471 14.91 15.05 13.85 12.91 11.86 M1 27 0
10 THA 15-12 Or* 15 56 09.2067120748 -37 56 06.126159332   13.12 11.93 11.45   M0e 246 0
11 NAME Lup Cloud SFR 16 03 -38.1           ~ 517 0
12 HD 325367 Or* 16 03 05.4914377137 -40 18 25.426543472   11.40 8.50     M0 276 0
13 ICRF J160734.7-333108 QSO 16 07 34.76234480 -33 31 08.9133114   20.5       ~ 28 1
14 V* V1279 Sco Or* 16 08 22.4935035747 -39 04 46.427826148   14.99 13.66 11.70 11.21 M0.4 84 1
15 WRAY 16-203 Or* 16 08 29.7086692265 -39 03 10.994386198   16.26 15.91 15.38 15.69 K0: 152 1
16 V* V1094 Sco TT* 16 08 36.1770068081 -39 23 02.462096497 16.01 15.00 13.48 12.47 11.45 ~ 52 1
17 NAME Lupus III SFR 16 09.6 -39 03           ~ 271 0
18 ICRF J161021.8-395858 QSO 16 10 21.87908922 -39 58 58.3284422       18.5   ~ 55 1
19 Elia 2-24 TT* 16 26 24.0896068058 -24 16 13.456681632   16.3 14.40 15.81 13.97 K6 126 1
20 EM* AS 209 Or* 16 49 15.3035547820 -14 22 08.642015783   12.62 11.28     K4Ve 233 0
21 HD 163296 Ae* 17 56 21.2882188601 -21 57 21.872343282 7.00 6.93 6.85 6.86 6.67 A1Vep 803 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-19:03:39

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