2020A&A...640A..13S


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.26CET13:58:46

2020A&A...640A..13S - Astronomy and Astrophysics, volume 640A, 13-13 (2020/8-1)

Bipolar molecular outflow of the very low-mass star Par-Lup3-4. Evidence for scaled-down low-mass star formation.

SANTAMARIA-MIRANDA A., DE GREGORIO-MONSALVO I., HUELAMO N., PLUNKETT A.L., RIBAS A., COMERON F., SCHREIBER M.R., LOPEZ C., MUZIC K. and TESTI L.

Abstract (from CDS):


Context. Very low-mass stars are known to have jets and outflows, which is indicative of a scaled-down version of low-mass star formation. However, only very few outflows in very low-mass sources are well characterized.
Aims. We characterize the bipolar molecular outflow of the very low-mass star Par-Lup3-4, a 0.12 M object known to power an optical jet.
Methods. We observed Par-Lup3-4 with ALMA in Bands 6 and 7, detecting both the continuum and CO molecular gas. In particular, we studied three main emission lines: CO(2-1), CO(3-2), and 13CO(3-2).
Results. Our observations reveal for the first time the base of a bipolar molecular outflow in a very low-mass star, as well as a stream of material moving perpendicular to the primary outflow of this source. The primary outflow morphology is consistent with the previously determined jet orientation and disk inclination. The outflow mass is 9.5x10–7M, with an outflow rate of 4.3x10–9M/yr. A new fitting to the spectral energy distribution suggests that Par-Lup3-4 may be a binary system.
Conclusions. We have characterized Par-Lup3-4 in detail, and its properties are consistent with those reported in other very low-mass sources. This source provides further evidence that very low-mass sources form as a scaled-down version of low-mass stars.

Abstract Copyright: © ESO 2020

Journal keyword(s): stars: formation - ISM: individual objects: Par-Lup3-4 - ISM: jets and outflows - submillimeter: stars - techniques: interferometric

VizieR on-line data: <Available at CDS (J/A+A/640/A13): list.dat fits/*>

Simbad objects: 16

goto Full paper

goto View the reference in ADS

Number of rows : 16

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 [PZR2014b] IC 348-SMM2E Y*O 03 43 57.73 +32 03 10.1           ~ 22 0
2 2MASS J04321606+1812464 TT* 04 32 16.0655428266 +18 12 46.383508261   19.20 17.595     M6.5 73 0
3 V* GM Tau Or* 04 38 21.3390129259 +26 09 13.784439336     17.577   15.04 M6.5 94 0
4 ISO-ChaI 143 Y*? 11 08 22.3644100400 -77 30 27.790600663         15.51 M5e 40 0
5 ISO-ChaI 217 pr* 11 09 52.1370847465 -76 39 12.880114192         16.63 ~ 43 0
6 TWA 27 LM* 12 07 33.4676156527 -39 32 54.016042897     19.95 17.99 15.88 M8IVe 311 0
7 QSO B1514-24 BLL 15 17 41.8135246339 -24 22 19.482167214   15.13 14.00 13.95   ~ 653 3
8 NAME Lupus I Cld 15 43 02.1 -34 09 06           ~ 227 0
9 V* V1192 Sco Or* 16 08 51.4339982240 -39 05 30.468181083     21.9 18.97 18.18 M5 60 0
10 NAME Lupus III SFR 16 09.6 -39 03           ~ 273 0
11 ICRF J161021.8-395858 QSO 16 10 21.87908922 -39 58 58.3284422       18.5   ~ 59 1
12 [GY92] 204 TT* 16 27 06.5924723987 -24 41 48.883697790       17.57 15.43 M5 83 0
13 ISO-Oph 200 Y*O 16 31 43.7601980245 -24 55 24.587358028           ~ 16 0
14 2MASS J19013357-3700304 Y*O 19 01 33.5769494372 -37 00 30.475478822           M6.5 44 0
15 2MASS J20405664+6723047 Y*O 20 40 56.65 +67 23 04.8           ~ 33 0
16 NAME LDN 1014 IRS Y*O 21 24 07.58 +49 59 08.9           ~ 76 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2020A&A...640A..13S and select 'bookmark this link' or equivalent in the popup menu


2020.10.26-13:58:46

© Université de Strasbourg/CNRS

    • Contact