2011A&A...526L...2L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST13:52:39

2011A&A...526L...2L - Astronomy and Astrophysics, volume 526, L2-2 (2011/2-1)

SiO outflows in high-mass star forming regions: a potential chemical clock?

LOPEZ-SEPULCRE A., WALMSLEY C.M., CESARONI R., CODELLA C., SCHULLER F., BRONFMAN L., CAREY S.J., MENTEN K.M., MOLINARI S. and NORIEGA-CRESPO A.

Abstract (from CDS):

Some theoretical models propose that O-B stars form via accretion, in a similar fashion to low-mass stars. Jet-driven molecular outflows play an important role in this scenario, and their study can help to understand the process of high-mass star formation and the different evolutionary phases involved. Observations towards low-mass protostars so far favour an evolutionary picture in which jets are always associated with Class 0 objects while more evolved Class I/II objects show less evidence of powerful jets. The present study aims at checking whether an analogous picture can be found in the high-mass case. The IRAM 30-m telescope (Spain) has been used to perform single-pointing SiO(2-1) and (3-2) observations towards a sample of 57 high-mass molecular clumps in different evolutionary stages. Continuum data at different wavelengths, from mid-IR to 1.2 mm, have been gathered to build the spectral energy distributions of all the clumps and estimate their bolometric luminosities. SiO emission at high velocities, characteristic of molecular jets, is detected in 88% of our sources, a very high detection rate indicating that there is ongoing star formation activity in most of the sources of our sample. The SiO(2-1) luminosity drops with Lbol/M, which suggests that jet activity declines as time evolves. This represents the first clear evidence of a decrease of SiO outflow luminosity with time in a homogeneous sample of high-mass molecular clumps in different evolutionary stages. The SiO(3-2) to SiO(2-1) integrated intensity ratio shows only minor changes with evolutionary state.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: clouds - ISM: jets and outflows - ISM: molecules

Simbad objects: 60

goto Full paper

goto View the reference in ADS

Number of rows : 60

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 IRAS 05358+3543 mul 05 39 10.4 +35 45 19           ~ 134 1
2 [HBM2005] G213.61-12.6 mm 06 07 47.9 -06 22 57           ~ 5 0
3 [HBM2005] G189.78+0.34 mm 06 08 34.5 +20 38 51           ~ 3 0
4 [HBM2005] G192.581-0.042 mm 06 12 52.9 +18 00 35           ~ 3 0
5 [HBM2005] G192.60-0.05 mm 06 12 54.0 +17 59 23           ~ 3 0
6 [BSM2002] 18151-1208 2 cor 18 17 50.36 -12 07 54.8           ~ 17 0
7 [BSM2002] 18151-1208 3 cor 18 17 52.17 -12 06 55.5           ~ 9 0
8 IRAS 18151-1208 Y*O 18 17 58.114 -12 07 24.84           ~ 100 0
9 [THW2006] G018.149-00.286SMM smm 18 25 01.8 -13 15 35           ~ 2 0
10 [WWS2012] G018.17-00.30 cor 18 25 07.2882 -13 14 33.495           ~ 14 0
11 IRAS 18223-1243 Y*O 18 25 10.92912 -12 42 15.5196           ~ 54 1
12 IRAS 18228-1312 Y*O 18 25 42.297 -13 10 19.19           ~ 26 3
13 AGAL G019.286+00.082 Y*O 18 25 52.11528 -12 04 49.8900           ~ 22 0
14 [RJS2006] MSXDC G019.27+00.07 MM1 MoC 18 25 58.29 -12 04 13.5           ~ 15 0
15 IRAS 18232-1154 Y*O 18 26 04.34112 -11 52 33.7836           ~ 25 2
16 GAL 019.36-00.02 HII 18 26 24.3 -12 03 47           ~ 27 0
17 [FC2000] G019.61-0.24 A HII 18 27 38.16 -11 56 40.2           ~ 4 0
18 OH 20.1 -0.1 SFR 18 28 10.3918 -11 28 44.164           ~ 107 0
19 RAFGL 5491 mul 18 28 10.7 -11 29 01           ~ 45 0
20 IRAS 18264-1152 cor 18 29 14.6846 -11 50 23.966           ~ 70 1
21 [RJS2006] MSXDC G023.60+00.00 MM1 mm 18 34 11.6 -08 19 06           ~ 13 0
22 RAFGL 7009S HII 18 34 20.911 -05 59 42.23           ~ 193 0
23 [RJS2006] MSXDC G023.60+00.00 MM2 mm 18 34 21.1 -08 18 07           ~ 13 0
24 IRAS 18317-0513 HII 18 34 25.620 -05 10 50.34           ~ 25 0
25 [RJS2006] MSXDC G024.08+00.04 MM2 mm 18 34 51.1 -07 45 32           ~ 7 0
26 [RSJ2007] G024.33+00.11 MM1 PoC 18 35 08.13 -07 35 04.0           ~ 6 0
27 [RJS2006] MSXDC G024.33+00.11 MM4 mm 18 35 19.4 -07 37 17           ~ 10 0
28 [RJS2006] MSXDC G024.33+00.11 MM2 mm 18 35 34.5 -07 37 28           ~ 8 0
29 AGAL G024.629+00.172 Y*O 18 35 35.9973 -07 18 02.858           ~ 27 0
30 [RJS2006] MSXDC G024.60+00.08 MM1 mm 18 35 40.2 -07 18 37           ~ 12 0
31 [RJS2006] MSXDC G025.04-00.20 MM1 mm 18 38 10.2 -07 02 34           ~ 10 0
32 [RJS2006] MSXDC G025.04-00.20 MM4 mm 18 38 13.7 -07 03 12           ~ 7 0
33 [RJS2006] MSXDC G025.04-00.20 MM2 mm 18 38 17.7 -07 02 51           ~ 7 0
34 [HBM2005] G28.28-0.35 mm 18 44 14.2 -04 17 59           ~ 7 0
35 GAL 034.4+00.23 HII 18 53 17.4 +01 24 55           ~ 74 1
36 AGAL G034.411+00.234 Y*O 18 53 18.0 +01 25 24           ~ 48 0
37 OH 34.26 +0.15 SFR 18 53 18.54 +01 14 57.9           ~ 460 0
38 [RJS2006] MSXDC G034.43+00.24 MM3 mm 18 53 20.4 +01 28 23           ~ 33 0
39 [HBM2005] G34.24+0.13 cor 18 53 21.7 +01 13 37           ~ 4 0
40 IRAS 18517+0437 SFR 18 54 13.8 +04 41 32           ~ 56 0
41 [BT2009] G2 mm 18 56 50.3 +01 23 16           ~ 22 0
42 [ZYL2017] G35-4 MoC 18 57 06.92 +02 08 20.9           ~ 14 0
43 MSXDC G035.39-0.33 MoC 18 57 09.0 +02 07 46           ~ 82 0
44 GAL 035.20-01.74 Y*O 19 01 47.0 +01 13 08           ~ 71 1
45 AGAL G038.957-00.466 Y*O 19 04 07.4 +05 08 48           ~ 17 0
46 IRAS 19035+0641 Y*O 19 06 01.63416 +06 46 36.6168           ~ 56 0
47 [BNM96] 043.793-0.125 Y*O 19 11 54.016 +09 35 49.46           ~ 61 2
48 GAL 043.89-00.78 HII 19 14 26.16 +09 22 34.0           ~ 49 0
49 [WC89] 061.48+0.09A HII 19 46 49.203 +25 12 48.09           ~ 4 0
50 NAME Cygnus 2N HII 20 21 44.1 +37 26 40           ~ 110 1
51 IRAS 20216+4107 cor 20 23 23.855 +41 17 40.49           ~ 53 0
52 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 618 1
53 IRAS 20332+4124 HII 20 35 00.5 +41 34 48           ~ 35 0
54 IRAS 22134+5834 Y*O 22 15 09.02616 +58 49 08.8608           ~ 68 0
55 [BSM2002] 22570+5912 2 cor 22 59 02.80 +59 27 36.0           ~ 4 0
56 [BSM2002] 22570+5912 1 cor 22 59 05.90 +59 28 19.0           ~ 4 0
57 IRAS 23033+5951 Y*O 23 05 25.16112 +60 08 15.4428           ~ 78 0
58 NGC 7538B HII 23 13 45.35 +61 28 10.3           ~ 12 0
59 IRAS 23139+5939 Y*O 23 16 10.39680 +59 55 28.2396           ~ 77 0
60 IRAS 23151+5912 HII 23 17 21.0 +59 28 49           ~ 93 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2011A&A...526L...2L and select 'bookmark this link' or equivalent in the popup menu


2020.07.04-13:52:39

© Université de Strasbourg/CNRS

    • Contact