2018A&A...620L...1G


Query : 2018A&A...620L...1G

2018A&A...620L...1G - Astronomy and Astrophysics, volume 620, L1-1 (2018/12-1)

ALMA detects a radial disk wind in DG Tauri.

GUDEL M., EIBENSTEINER C., DIONATOS O., AUDARD M., FORBRICH J., KRAUS S., RAB C., SCHNEIDER C., SKINNER S. and VOROBYOV E.

Abstract (from CDS):


Aims. We aim to use the high spatial resolution of the Atacama Large Millimeter/submillimeter Array (ALMA) to map the flow pattern of molecular gas near DG Tauri and its disk, a young stellar object driving a jet and a molecular outflow.
Methods. We use observations from ALMA in the J=2-1 transition of 12CO, 13CO, and C18O to study the Keplerian disk of DG Tauri and outflows that may be related to the disk and the jet.
Results. We find a new wind component flowing radially at a steep angle (~=25° from the vertical) above the disk with a velocity of ~=3.1km/s. It continues the trend of decreasing velocity for increasing distance from the jet axis ("onion-like velocity structure").
Conclusions. The new component is located close to the protostellar disk surface and may be related to photoevaporative winds.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: pre-main sequence - stars: winds - outflows - protoplanetary disks

Errata: erratum vol. 631, art. C1 (2019)

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1431 2
2 QSO B0400+258 QSO 04 03 05.58606763 +26 00 01.5028075     18 19.00   ~ 186 1
3 IRAS 04016+2610 Y*O 04 04 43.07064 +26 18 56.3904           ~ 240 0
4 V* DG Tau Or* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 959 1
5 QSO B0507+179 QSO 05 10 02.36912982 +18 00 41.5816534   20.0 19.0 19.09   ~ 352 1
6 THA 15-12 Or* 15 56 09.2067120748 -37 56 06.126159332   13.12 11.93 11.45   M0e 293 0
7 HD 142527 Ae* 15 56 41.8888096574 -42 19 23.245384377   9.04 8.34     F6III 522 1

    Equat.    Gal    SGal    Ecl

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2021.07.27-02:04:16

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