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

Full paper

View the references in ADS

Number of rows : 64

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Sp type	#ref 1850 - 2023	#notes
1	NGC 1333	OpC	03 29 11.3	+31 18 36			~	1407	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			~	126	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			~	8	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			~	24	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	~	494	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			~	13	0
16	HH 901	HH	10 44 03.5	-59 31 02			~	14	0
17	HH 1066	HH	10 44 05.4	-59 29 40			~	11	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			~	475	0
32	NGC 3372	HII	10 45 02.23	-59 41 59.8			~	997	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			~	15	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			~	12	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			~	5	0
57	HH 1004	HH	10 46 44.8	-60 10 20			~	5	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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