1999MNRAS.309..141D

Query : 1999MNRAS.309..141D

1999MNRAS.309..141D - Mon. Not. R. Astron. Soc., 309, 141-152 (1999/October-2)

A burst of outflows from the Serpens cloud core: wide-field submillimetre continuum, CO j = 2-1 and optical observations.

DAVIS C.J., MATTHEWS H.E., RAY T.P., DENT W.R.F. and RICHER J.S.

Abstract (from CDS):

Wide-field mapping of Serpens in submillimetre continuum emission and CO J=2-1 line emission is here complemented by optical imaging in [Sii] λλ6716, 6731 line emission. Analysis of the 450- and 850-µm continuum data shows at least 10 separate sources, along with fainter diffuse background emission and filaments extending to the south and east of the core. These filaments describe `cavity-like' structures that may have been shaped by the numerous outflows in the region. The dust opacity index, β, derived for the identifiable compact sources is of the order of 1.0±0.2, with dust temperatures in excess of 20K. This value of β is somewhat lower than for typical class I YSOs; we suggest that the Serpens sources may be `warm', late class 0 or early class I objects.

With the combined CO and optical data we also examine, on large scales, the outflows driven by the embedded sources in Serpens. In addition to a number of new Herbig-Haro flows (here denoted HH 455-460), a number of high-velocity CO lobes are observed; these extend radially outwards from the cluster of submillimetre sources in the core. A close association between the optical and molecular flows is also identified. The data suggest that many of the submillimetre sources power outflows. Collectively, the outflows traced in CO support the widely recognized correlation between source bolometric luminosity and outflow power, and imply a dynamical age for the whole protostellar cluster of ∼3x104yr. Notably, this is roughly equal to the proposed duration of the `class 0' stage in protostellar evolution.


Abstract Copyright: 1999, Royal Astronomical Society

Journal keyword(s): stars: formation - ISM: clouds - ISM: individual: Serpens - ISM: jets and outflows - ISM: kinematics and dynamics

Nomenclature: Table 1: HH NNN (Nos 456-457). Table 2, Fig.1: [DMR99] Knot a (Nos a-c). Fig.1: [DMR99] Extension N (Nos 1-2). Fig.4: [DMR99] Lobe WWaN N=11. Table 2: [CED93] NN (Nos 10-11) added.

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

CDS comments: SMM NN objects are [CED93] NN in SIMBAD.

Simbad objects: 26

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Number of rows : 26
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
2 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 823 1
3 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 1027 0
4 V* R Mon Ae* 06 39 09.9542000448 +08 44 09.539482632 10.76 12.46 11.85 10.96 10.25 B8IIIe 525 0
5 HH 54 HH 12 55 49.5 -76 56 08           ~ 119 0
6 HH 106 HH 18 29 18.8 +01 14 17           ~ 15 0
7 IRAS 18269+0116 Y*O 18 29 31.9758302760 +01 18 42.616775520           K6.5 44 0
8 HH 460 HH 18 29 38.6 +01 18 24           ~ 11 1
9 HH 107 HH 18 29 48.0 +01 25 55           ~ 10 0
10 SH 2-68 N Y*O 18 29 48.09 +01 16 45.0           ~ 161 1
11 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
12 GCNM 23 Y*O 18 29 49.63 +01 15 21.9           ~ 291 2
13 V* V371 Ser Or* 18 29 51.21240 +01 16 39.4860           ~ 132 1
14 GBS-VLA J182952.22+011547.4 Y*O 18 29 52.20 +01 15 47.6           ~ 50 1
15 NAME Serpens SMM 4 cor 18 29 57.1 +01 13 15           ~ 143 0
16 IRAS 18274+0112 Y*O 18 29 57.73680 +01 14 05.6940           M4: 143 2
17 HH 458 HH 18 29 58.02 +01 13 43.2           ~ 5 1
18 2MASS J18295913+0111200 Y*O 18 29 59.1300417000 +01 11 20.111697168           M5.0 13 0
19 NAME SERPENS SMM 3 Y*O 18 29 59.28 +01 14 01.7           ~ 111 1
20 SSTc2d J182959.3+011041 Y*O 18 29 59.38 +01 10 40.9           ~ 17 0
21 HH 455 HH 18 30 +01.3           ~ 5 1
22 NAME Serpens SMM 11 smm 18 30 00.3 +01 11 42           ~ 25 0
23 JCMTSE J183000.2+011251 Y*O 18 30 00.4 +01 12 50           ~ 53 0
24 [CED93] 8 smm 18 30 01.8 +01 15 07           ~ 18 0
25 HH 459 HH 18 30 02.6 +01 14 45           ~ 7 1
26 SH 2-106 HII 20 27 26.8 +37 22 49           ~ 453 1

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