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

VizieR on-line data: <Available at CDS (J/A+A/620/L1): list.dat fits/*>

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

Simbad objects: 7

Full paper

View the references in ADS

Number of rows : 7

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2023	#notes
1	QSO B0235+1624	BLL	02 38 38.93010450	+16 36 59.2745528		16.46	15.50	15.92	~	1488	2
2	QSO B0400+258	QSO	04 03 05.58608082	+26 00 01.5027775			18	19.00	~	196	1
3	IRAS 04016+2610	Y*O	04 04 43.07064	+26 18 56.3904					~	253	0
4	V* DG Tau	Or*	04 27 04.6921275888	+26 06 16.060169268	13.57	13.97	10.50	12.28	K6Ve	1010	1
5	QSO B0507+179	QSO	05 10 02.36912937	+18 00 41.5815635		20.0	19.0	19.09	~	396	1
6	THA 15-12	Or*	15 56 09.2066646912	-37 56 06.126118692		13.12	11.93	11.45	M0e	388	0
7	HD 142527	Ae*	15 56 41.8882637904	-42 19 23.248281828		9.04	8.34		F6III	601	1

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