2012A&A...543L...3H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST12:18:40

2012A&A...543L...3H - Astronomy and Astrophysics, volume 543, L3-3 (2012/7-1)

The spine of the swan: a Herschel study of the DR21 ridge and filaments in Cygnus X.

HENNEMANN M., MOTTE F., SCHNEIDER N., DIDELON P., HILL T., ARZOUMANIAN D., BONTEMPS S., CSENGERI T., ANDRE P., KONYVES V., LOUVET F., MARSTON A., MEN'SHCHIKOV A., MINIER V., NGUYEN LUONG Q., PALMEIRIM P., PERETTO N., SAUVAGE M., ZAVAGNO A., ANDERSON L.D., BERNARD J.-Ph., DI FRANCESCO J., ELIA D., LI J.Z., MARTIN P.G., MOLINARI S., PEZZUTO S., RUSSEIL D., RYGL K.L.J., SCHISANO E., SPINOGLIO L., SOUSBIE T., WARD-THOMPSON D. and WHITE G.J.

Abstract (from CDS):

In order to characterise the cloud structures responsible for the formation of high-mass stars, we present Herschel observations of the DR21 environment. Maps of the column density and dust temperature unveil the structure of the DR21 ridge and several connected filaments. The ridge has column densities higher than 1023cm–2 over a region of 2.3pc2. It shows substructured column density profiles and branches into two major filaments in the north. The masses in the filaments range between 130 and 1400M, whereas the mass in the ridge is 15000M. The accretion of these filaments onto the DR21 ridge, suggested by a previous molecular line study, could provide a continuous mass inflow to the ridge. In contrast to the striations seen in, e.g., the Taurus region, these filaments are gravitationally unstable and form cores and protostars. These cores formed in the filaments potentially fall into the ridge. Both inflow and collisions of cores could be important to drive the observed high-mass star formation. The evolutionary gradient of star formation running from DR21 in the south to the northern branching is traced by decreasing dust temperature. This evolution and the ridge structure can be explained by two main filamentary components of the ridge that merged first in the south.

Abstract Copyright:

Journal keyword(s): ISM: individual objects: DR 21 - ISM: general - ISM: structure - dust, extinction - stars: formation - ISM: individual objects: DR21

CDS comments: Fig. 1b filaments not in Simbad.

Simbad objects: 11

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Number of rows : 11

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 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3479 0
2 NGC 2264 OpC 06 40 58 +09 53.7     3.9     ~ 1588 1
3 NAME Vela C Cld 08 57 -43.2           ~ 123 0
4 NAME Northern Coalsack DNe 20 21 +37.0           ~ 102 0
5 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 619 1
6 [MBS2007c] CygX-N23 mm 20 38 04.9 +42 33 17           ~ 1 0
7 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 360 1
8 [MBS2007c] CygX-N40 mm 20 38 59.8 +42 23 43           ~ 6 0
9 [MBS2007c] CygX-N44 Rad 20 39 01.01 +42 22 50.2           ~ 363 0
10 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 944 0
11 NAME Aql Region reg ~ ~           ~ 304 0

    Equat.    Gal    SGal    Ecl

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2020.07.12-12:18:40

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