2002A&A...383..540P


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.13CEST16:35:07

2002A&A...383..540P - Astronomy and Astrophysics, volume 383, 540-547 (2002/2-4)

The outflow activity of the protostars in S140 IRS.

PREIBISCH T. and SMITH M.D.

Abstract (from CDS):

The S140/L1204 cloud contains a deeply embedded region of star formation and a powerful molecular outflow. In this paper, we present images of the S140 region obtained in the light of the 2.12µm molecular hydrogen emission line and adjacent continuum. Our images reveal several knots of H2 line emission originating from shocked material close to IRS1 as well as further out. Strong H2 shock emission is found north-east of IRS1 (at position angle of ∼20° -30° ), as well as to the south-west of IRS1 (at position angles around ∼190° -220° ), clearly demonstrating the presence of outflow activity in the north-east/south-west direction. We also find patches of H2 emission several arcminutes away from IRS1 at a position angles of ∼150° and 340° , i.e. in directions consistent with the previously known north-west/south-east molecular outflow. Our results therefore provide evidence for the existence of two distinct bipolar outflow systems originating simultaneously from IRS1. We also discuss general aspects of the star formation process in the S140 region. An inferred high ratio of stellar to gas mass suggests that the outflows have dispersed most of the cloud mass.

Abstract Copyright:

Journal keyword(s): stars: individual: S140 IRS1 - stars: individual: S140 IRS 3 - stars: formation - stars: winds, outflows

Nomenclature: Figs 1, 2: [PS2002] Knot NN (Nos 1-14).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 18

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Number of rows : 18

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 Ass Cep OB 2 As* 21 51 +60.0           ~ 280 0
2 NGC 7160 OpC 21 53 40 +62 36.2   6.34 6.1     ~ 210 0
3 HD 211880 * 22 18 27.8027027819 +63 13 22.447833668 7.47 7.99 7.75     B0.5V 91 0
4 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 636 2
5 [BBW79] S 140 IRS 4 Rad 22 19 17.53 +63 18 41.1           ~ 12 1
6 IRAS 22176+6303 Y*O 22 19 17.978 +63 18 52.92           ~ 590 0
7 [PS2002] Knot 1 PoC 22 19 18.0 +63 18 45           ~ 2 0
8 NAME SH 2-140 IRS 1 Y*O 22 19 18.277 +63 18 45.82           ~ 192 0
9 NAME SH 2-140 IRS 2 NIR 22 19 18.514 +63 18 55.16           ~ 35 0
10 NAME SH 2-140 IRS 3 NIR 22 19 19.853 +63 18 48.07           ~ 47 0
11 LDN 1204 DNe 22 26.7 +63 15           ~ 86 1
12 [BBW79] S 140 IRS 3a IR ~ ~           ~ 5 0
13 [WBP2002] S 140 IRS 7 IR ~ ~           ~ 2 1
14 [WBP2002] S 140 IRS 6 IR ~ ~           ~ 2 1
15 [WBP2002] S 140 IRS 5 IR ~ ~           ~ 2 1
16 [WBP2002] S 140 IRS 4 IR ~ ~           ~ 2 1
17 [BBW79] S 140 IRS 3c IR ~ ~           ~ 3 0
18 [BBW79] S 140 IRS 3b IR ~ ~           ~ 5 0

    Equat.    Gal    SGal    Ecl

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2021.04.13-16:35:07

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