2012A&A...540A..81O

Query : 2012A&A...540A..81O

2012A&A...540A..81O - Astronomy and Astrophysics, volume 540A, 81-81 (2012/4-1)

Jet-driving protostars identified from infrared observations of the Carina Nebula complex.

OHLENDORF H., PREIBISCH T., GACZKOWSKI B., RATZKA T., GRELLMANN R. and McLEOD A.F.

Abstract (from CDS):

Jets are excellent signposts for very young embedded protostars, so we want to identify jet-driving protostars as a tracer of the currently forming generation of stars in the Carina Nebula, which is one of the most massive galactic star-forming regions and which is characterised by particularly high levels of massive-star feedback on the surrounding clouds. We used archive data to construct large (>2°x2°) Spitzer IRAC mosaics of the Carina Nebula and performed a spatially complete search for objects with excesses in the 4.5µm band, typical of shock-excited molecular hydrogen emission. We also identified the mid-infrared point sources that are the likely drivers of previously discovered Herbig-Haro jets and molecular hydrogen emission line objects. We combined the Spitzer photometry with our recent Herschel far-infrared data to construct the spectral energy distributions, and used the Robitaille radiative-transfer modelling tool to infer the properties of the objects. The radiative-transfer modelling suggests that the jet sources are protostars with masses between ∼1M☉ and ∼10M☉ that are surrounded by circumstellar disks and embedded in circumstellar envelopes. The estimated protostar masses ≤10M☉ suggest that the current star-formation activity in the Carina Nebula is restricted to low- and intermediate-mass stars. More optical than infrared jets can be observed, indicating that star formation predominantly takes place close to the surfaces of clouds.

Abstract Copyright: ∼

Journal keyword(s): ISM: clouds - stars: formation - ISM: jets and outflows - stars: protostars - Herbig-Haro objects

Nomenclature: Table 1: [OPG2012] JHHMMSS.s+DDMMSS N=37.

Simbad objects: 64

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Number of rows : 64
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1450 1
2 HH 1166 of? 10 36 55.9 -58 36 38           ~ 5 0
3 NGC 3324 OpC 10 37 21.8 -58 36 54           ~ 129 1
4 [OPG2012] J104040.5-585319 IR 10 40 40.5 -58 53 19           ~ 1 0
5 [SPW2010] EGO G287.10-0.73 IR 10 41 14.3 -59 32 39           ~ 3 0
6 HH 1010 HH 10 41 48.7 -59 43 38           ~ 9 0
7 [OPG2012] J104248.1-592529 IR 10 42 48.1 -59 25 29           ~ 1 0
8 [OPG2012] J104325.5-591645 IR 10 43 25.5 -59 16 45           ~ 1 0
9 [OPG2012] J104325.7-591700 IR 10 43 25.7 -59 17 00           ~ 1 0
10 HH 666 HH 10 43 51.3 -59 55 21           ~ 25 0
11 MHO 1605 EmO 10 43 51.4 -59 39 11           ~ 3 0
12 HH 1173 of? 10 43 54.6 -59 32 46           ~ 3 0
13 Cl Trumpler 14 OpC 10 43 56.6 -59 33 11   5.70 5.5     ~ 509 0
14 HH 1172 of? 10 44 00.6 -59 54 27           ~ 3 0
15 HH 902 HH 10 44 01.7 -59 30 32           ~ 15 0
16 HH 901 HH 10 44 03.5 -59 31 02           ~ 16 0
17 HH 1066 HH 10 44 05.4 -59 29 40           ~ 13 0
18 HH 1013 HH 10 44 19.2 -59 26 14           ~ 4 0
19 MHO 1606 EmO 10 44 22.7 -59 33 54           ~ 3 0
20 HH 1015 HH 10 44 27.9 -60 22 57           ~ 4 0
21 MHO 1607 EmO 10 44 28.2 -59 32 45           ~ 3 0
22 MHO 1608 EmO 10 44 29.1 -59 32 42           ~ 3 0
23 HH 1007 HH 10 44 29.5 -60 23 05           ~ 4 0
24 HH 1012 HH 10 44 38.6 -59 30 07           ~ 3 0
25 HH 1009 HH 10 44 39.5 -59 58 26           ~ 3 0
26 HH 1017 HH 10 44 41.5 -59 33 57           ~ 3 0
27 HH 1008 HH 10 44 45.4 -59 55 55           ~ 5 0
28 [OPG2012] J104450.4-593303 IR 10 44 50.4 -59 33 03           ~ 1 0
29 HH 1018 HH 10 44 52.9 -59 45 26           ~ 3 0
30 [OPG2012] J104455.7-592554 IR 10 44 55.7 -59 25 54           ~ 1 0
31 Cl Trumpler 16 OpC 10 45 00.7 -59 42 00           ~ 484 0
32 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1014 2
33 NAME eta Car Cluster Cl* 10 45 03.0 -59 41 04           ~ 28 0
34 HH 1167 of? 10 45 04.6 -60 03 02           ~ 4 0
35 HH 1011 HH 10 45 04.9 -59 26 59           ~ 4 0
36 HH 1171 of? 10 45 07.8 -60 03 23           ~ 3 0
37 HH 1168 of? 10 45 08.0 -59 31 03           ~ 4 0
38 [SBW2010] Carina HHc-4 of? 10 45 08.3 -60 02 31           ~ 6 0
39 [OPG2012] J104509.2-600220 of? 10 45 09.3 -60 02 26           ~ 5 0
40 [OPG2012] J104509.4-600203 of? 10 45 09.3 -60 01 59           ~ 6 0
41 MHO 1609 EmO 10 45 10.1 -60 02 29           ~ 4 0
42 [OPG2012] J104512.0-600310 of? 10 45 12.2 -60 03 09           ~ 7 0
43 [OPG2012] J104513.0-600259 of? 10 45 13.4 -60 02 55           ~ 5 0
44 HH 900 HH 10 45 19.3 -59 44 23           ~ 16 0
45 [OPG2012] J104528.6-591319 IR 10 45 28.6 -59 13 19           ~ 1 0
46 [SPW2010] EGO G287.95-1.13 IR 10 45 42.0 -60 17 31           ~ 2 0
47 HH 1156 of? 10 45 43.7 -59 41 39           ~ 4 0
48 HH 1014 HH 10 45 45.9 -59 41 06           ~ 5 0
49 HH 1016 HH 10 45 53.2 -59 56 05           ~ 4 0
50 NAME Treasure Chest Cluster Cl* 10 45 54.0 -59 56 58           ~ 28 1
51 HH 903 HH 10 45 56.4 -60 06 08           ~ 8 0
52 HH 1169 out 10 45 57.2 -60 05 32           ~ 6 0
53 MHO 1610 EmO 10 46 08.4 -59 45 24           ~ 3 0
54 [SBM2003] J104632.9-600354 Y*O 10 46 32.971 -60 03 53.58           ~ 13 0
55 HH 1170 of? 10 46 36.0 -60 07 12           ~ 3 0
56 HH 1005 HH 10 46 44.2 -60 10 35           ~ 6 0
57 HH 1004 HH 10 46 44.8 -60 10 20           ~ 6 0
58 [SPW2010] EGO G288.15-1.17 IR 10 47 00.6 -60 25 35           ~ 2 0
59 2MASS J10475014-6026187 Y*O 10 47 50.24 -60 26 18.6           ~ 2 0
60 [OPG2012] J104750.9-602625 IR 10 47 50.9 -60 26 25           ~ 1 0
61 2MASS J10475169-6026239 Y*O 10 47 51.67 -60 26 23.9           ~ 2 0
62 [SPW2010] EGO G288.26-1.14 IR 10 47 51.9 -60 26 22           ~ 2 0
63 PCYC 1320 Y*O 10 47 52.07 -60 26 27.0           ~ 2 0
64 [OPG2012] J104813.4-595848 IR 10 48 13.4 -59 58 48           ~ 1 0

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