2016MNRAS.463.4344R

Query : 2016MNRAS.463.4344R

2016MNRAS.463.4344R - Mon. Not. R. Astron. Soc., 463, 4344-4365 (2016/December-3)

[Fe II] jets from intermediate-mass protostars in Carina.

REITER M., SMITH N. and BALLY J.

Abstract (from CDS):

We present new HST/WFC3-IR narrow-band [Fe II] images of protostellar jets in the Carina Nebula. Combined with five previously published sources, we have a sample of 18 jets and two Herbig-Haro (HH) objects. All of the jets we targeted with Wide-Field Camera 3 (WFC3) show bright infrared [Fe II] emission, and a few Ha candidate jets are confirmed as collimated outflows based on the morphology of their [Fe II] emission. Continuum-subtracted images clearly separate jet emission from the adjacent ionization front, providing a better tracer of the collimated jet than Ha and allowing us to connect these jets with their embedded driving sources. The [Fe II] 1.64 mm/Ha flux ratio measured in the jets is ≳ 5 times larger than in the adjacent ionization fronts. The low-ionization jet core requires high densities to shield Fe+ against further ionization by the FUV radiation from O-type stars in the H II region. High jet densities imply high mass-loss rates, consistent with the intermediate-mass driving sources we identify for 13 jets. The remaining jets emerge from opaque globules that obscure emission from the protostar. In many respects, the HH jets in Carina look like a scaled-up version of the jets driven by low-mass protostars. Altogether, these observations suggest that [Fe II] emission is a reliable tracer of dense, irradiated jets driven by intermediate-mass protostars. We argue that highly collimated outflows are common to more massive protostars, and that they suggest the outflow physics inferred for low-mass stars formation scales up to at least ∼8 M☉.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: formation - stars: formation

Simbad objects: 43

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Number of rows : 43
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 NAME Orion S reg 05 35 12.9 -05 24 10           ~ 156 0
2 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 1004 0
3 HH 1 HH 05 36 20.8 -06 45 13           ~ 415 1
4 2MASS J10414873-5943375 Y*O 10 41 48.67 -59 43 38.1           ~ 5 0
5 HH 1010 HH 10 41 48.7 -59 43 38           ~ 9 0
6 HH 666 HH 10 43 51.3 -59 55 21           ~ 26 0
7 Cl Trumpler 14 OpC 10 43 56.0 -59 33 07   5.70 5.5     ~ 547 0
8 HH 902 HH 10 44 01.7 -59 30 32           ~ 17 0
9 HH 901 HH 10 44 03.5 -59 31 02           ~ 18 0
10 HH 1066 HH 10 44 05.4 -59 29 40           ~ 14 0
11 HH 1015 HH 10 44 27.9 -60 22 57           ~ 4 0
12 PCYC 538 Y*O 10 44 28.41 -60 22 59.4           ~ 4 0
13 HH 1007 HH 10 44 29.5 -60 23 05           ~ 4 0
14 Cl Trumpler 16 OpC 10 45 01.9 -59 42 00           ~ 510 0
15 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
16 * eta Car s*b 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2543 0
17 HH 1167 of? 10 45 04.6 -60 03 02           ~ 4 0
18 [SBW2010] Carina HHc-4 of? 10 45 08.3 -60 02 31           ~ 6 0
19 [OPG2012] J104509.2-600220 of? 10 45 09.3 -60 02 26           ~ 5 0
20 [OPG2012] J104509.4-600203 of? 10 45 09.3 -60 01 59           ~ 6 0
21 2MASS J10450977-6002047 Y*O 10 45 09.7713038688 -60 02 04.799619600           ~ 4 0
22 MHO 1609 EmO 10 45 10.1 -60 02 29           ~ 4 0
23 2MASS J10451039-6002423 Y*O 10 45 10.3912942176 -60 02 42.353790720           ~ 9 0
24 HH 1164 HH 10 45 10.5 -60 02 42           ~ 2 0
25 [OPG2012] J104512.0-600310 of? 10 45 12.2 -60 03 09           ~ 7 0
26 [OPG2012] J104513.0-600259 of? 10 45 13.4 -60 02 55           ~ 5 0
27 HH 900 HH 10 45 19.3 -59 44 23           ~ 18 0
28 HH 1156 of? 10 45 43.7 -59 41 39           ~ 4 0
29 HH 1014 HH 10 45 45.9 -59 41 06           ~ 5 0
30 PCYC 984 Y*O 10 45 46.50 -59 41 07.0           ~ 4 0
31 2MASS J10454660-5941239 Y*O 10 45 46.63 -59 41 24.1           ~ 3 0
32 HH 1016 HH 10 45 53.2 -59 56 05           ~ 4 0
33 HH 903 HH 10 45 56.4 -60 06 08           ~ 8 0
34 HH 1169 out 10 45 57.2 -60 05 32           ~ 6 0
35 PCYC 1172 Y*O 10 46 32.8623166680 -59 54 10.592563464           ~ 3 0
36 [SBM2003] J104632.9-600354 Y*O 10 46 32.971 -60 03 53.58           ~ 14 0
37 HD 305539 * 10 46 33.0589064424 -60 04 12.602965440 9.43 10.24 9.91 10.02 9.481 O8Vz 62 0
38 HH 1005 HH 10 46 44.2 -60 10 35           ~ 6 0
39 HH 1004 HH 10 46 44.8 -60 10 20           ~ 6 0
40 2MASS J10464500-6010151 Y*O 10 46 44.99 -60 10 15.0           ~ 4 0
41 Cl Bochum 11 OpC 10 47 06.3 -60 05 55           ~ 95 0
42 HH 666O HH ~ ~           ~ 7 0
43 HH 666M HH ~ ~           ~ 7 0

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