1998A&A...336..329N

Query : 1998A&A...336..329N

1998A&A...336..329N - Astronomy and Astrophysics, volume 336329-338 (1998/8-1)

The Cometary Globules CG30/31/38 in the Gum nebula. A radio line spectroscopic investigation.

NIELSEN A.S., OLBERG M., KNUDE J. and BOOTH R.S.

Abstract (from CDS):

We present radio line observations from the SEST. On the basis of 13CO(J=1-0) measurements we estimate the H2 mass associated with the globules CG30/31A-C/38 to be ∼43M☉. The gas kinetic temperature of the globules is in the range 5 to 14K. Line wings seen in the 12CO spectra as well as higher dipole moment molecules towards CG30, indicate that a dense molecular outflow is present. Especially the red wing reveals itself very clearly and is collimated, whereas the blue wing is weak and the emission is smeared out. The mass of the outflow is ∼0.3M☉ and the dynamical time scale is 1.7x104 years. The mechanical luminosity is 0.11L☉ for an assumed inclination of 90°. The 13CO(J=1-0) data have revealed that CG30 is a possible double globule, the small companion (here named CG30B) having a mass of ∼25% of the larger globule, corresponding to ∼2M☉.

Abstract Copyright: ∼

Journal keyword(s): stars: low-mass, brown dwarfs - stars: formation - ISM: individual objects: CG30 - ISM: individual objects: CG31 - ISM individual objects: CG38 - ISM: kinematics and dynamics

CDS comments: Dark Cloud = Sandqvist 111.

Simbad objects: 29

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Number of rows : 29
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 CG 1 CGb 07 19 21.5 -44 35 03           ~ 40 1
2 CD-44 3318 Ae* 07 19 28.2886716751 -44 35 11.235575735   10.47 9.99     A1e/F2IIIe 131 0
3 NAME GUM Nebula ISM 07 43 -42.1           ~ 454 1
4 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1190 1
5 CG 31E CGb 08 08 13 -36 04.1           ~ 6 0
6 CG 31D CGb 08 08 17 -36 01.8           ~ 10 0
7 CG 31C CGb 08 08 33 -35 59.5           ~ 13 0
8 CG 31B CGb 08 08 48 -36 03.0           ~ 14 0
9 CG 31 CGb 08 08 57 -35 59.4           ~ 33 0
10 CG 31A CGb 08 09 03 -36 01.3           ~ 15 0
11 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
12 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 951 0
13 HH 120 HH 08 09 32.6 -36 04 55           ~ 59 0
14 CG 30 CGb 08 09 32.8 -36 05 00           ~ 136 0
15 CG 30N Y*O 08 09 33.16152 -36 04 57.8136           M0 11 0
16 [DB2002b] G253.38-1.65 DNe 08 09 39 -36 10.6           ~ 18 0
17 2MASS J08254384-5100326 Y*O 08 25 43.85 -51 00 32.7           ~ 327 1
18 NAME ESO 210- 6A MoC 08 25 44 -51 02.1           ~ 40 1
19 HH 47 HH 08 25 44.30 -51 00 26.2           ~ 247 0
20 NAME ESO 210-6A CGb 08 25.8 -51 02           ~ 15 1
21 [DB2002b] G267.29-7.32 DNe 08 26 24 -50 51.1           ~ 7 0
22 BHR 34 MoC 08 26 34 -50 39.9           ~ 19 0
23 BHR 37 MoC 08 26 40 -51 01.6           ~ 19 0
24 IRAS 08261-5100 MoC 08 27 38.9 -51 10 38           ~ 30 0
25 GDC 6 DNe 08 32 00 -50 33.0           ~ 6 0
26 GDC 7 DNe 08 34 10 -50 18.8           ~ 6 0
27 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
28 NAME Vela R2 As* 09 00 -43.0           ~ 26 0
29 NGC 5367 RNe 13 57 44 -39 58.8           ~ 31 1

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