2017ApJS..229...35D

Query : 2017ApJS..229...35D

2017ApJS..229...35D - Astrophys. J., Suppl. Ser., 229, 35-35 (2017/April-0)

Effects of preionization in radiative shocks. II. Application to the Herbig-Haro objects.

DOPITA M.A. and SUTHERLAND R.S.

Abstract (from CDS):

In an earlier paper we treated the preionization problem in shocks over the velocity range 20 km s–1  vs 1000 km s–1 in a fully self-consistent manner. Here we investigate in detail the effect of the upstream UV photon field generated in the radiative zone of shocks in the range in which hydrogen is only partly ionized 20 km s–1 (  vs 150 km s–1). We show that, as a result of superheating in the nonequilibrium preshock plasma, both the magnetic parameter and the Mach number of the shock are strongly affected by the preionization state of the gas, which controls to a large extent the radiative spectrum of the shock. We use these models to provide specific line diagnostics for Herbig-Haro objects, which allow us to solve for both the preshock density and shock velocity, and we present detailed models of the HH 34 jet, which allows us to derive the shock conditions, mass-loss rate, momentum flux, and chemical abundances in the jet. We show that the refractory elements Mg, Ca, Fe, and Ni are enhanced by 0.22 dex over the solar values, which provides interesting clues about the jet-launching mechanism in pre-main-sequence evolution.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): atomic data - atomic processes - Herbig-Haro objects - radiative transfer - shock waves - shock waves

Simbad objects: 50

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Number of rows : 50
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 HH 11 HH 03 29 03 +31 15.8           ~ 155 1
2 HH 10 HH 03 29 05.456 +31 15 45.32           ~ 142 1
3 2MASS J03290842+3115284 NIR 03 29 08.420 +31 15 28.48           ~ 229 1
4 V* DG Tau TT* 04 27 04.6921275888 +26 06 16.060169268 13.57 13.97 10.50 12.28   K6Ve 1092 1
5 HH 123 HH 04 34 49.6 -14 13 08           ~ 11 1
6 HH 240 HH 05 19 40.762 -05 51 44.27           ~ 30 0
7 HH 83 HH 05 33 32.52 -06 29 46.9           ~ 65 0
8 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
9 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 623 0
10 HH 33 HH 05 35 19.4 -06 18 03           ~ 59 0
11 HH 85 HH 05 35 24.543 -06 20 22.33           ~ 19 0
12 HH 126 HH 05 35 26.6 -06 21 44           ~ 12 0
13 2MASS J05352984-0626583 Or* 05 35 29.8502549712 -06 26 58.334492688         18.18 ~ 105 0
14 HH 34 HH 05 35 31.30 -06 28 43.0     16     ~ 493 2
15 HH 34N HH 05 35 31.7 -06 24 26           ~ 34 0
16 HH 173 HH 05 35 34.8 -06 33 01           ~ 10 0
17 HH 86 HH 05 35 40.333 -06 36 12.48           ~ 19 0
18 NAME HH 87-88 HH 05 35 43.6 -06 37 53           ~ 5 0
19 HH 128 HH 05 36 08.5 -05 04 38           ~ 15 0
20 HH 3 HH 05 36 11.67 -06 43 04.2           ~ 54 0
21 HH 1 HH 05 36 20.8 -06 45 13           ~ 415 1
22 HH 2 HH 05 36.4 -06 47           ~ 341 1
23 HH 2H HH 05 36 25.50 -06 47 15.6           ~ 57 0
24 HH 43 HH 05 38 10.4 -07 09 25           ~ 100 0
25 HH 43C HH 05 38 10.8 -07 09 23           ~ 11 0
26 HH 43A HH 05 38 10.8 -07 09 23           ~ 13 0
27 HH 43B HH 05 38 10.8 -07 09 23           ~ 12 0
28 HH 24A HH 05 46 09.2296069344 -00 10 25.627182960           ~ 35 0
29 HH 111V HH 05 51 36.5 +02 48 48           ~ 29 0
30 HH 111H HH 05 51 44.2 +02 48 34           ~ 17 0
31 HH 111 HH 05 51 44.207 +02 48 33.87           ~ 418 0
32 HH 124A HH 06 40 58.8 +10 15 25           ~ 5 0
33 HH 124B HH 06 40 59.4 +10 15 21           ~ 5 0
34 HH 124C HH 06 41 00.1 +10 15 20           ~ 6 0
35 HH 125F HH 06 41 07.1 +09 47 28           ~ 3 0
36 HH 47C HH 08 25 32.96 -51 01 37.4           ~ 44 0
37 HH 47A HH 08 25 50.28 -50 58 52.4           ~ 91 0
38 HH 54B HH 12 55 50.3 -76 56 23           ~ 30 0
39 HH 54C HH 12 55 50.4 -76 56 05           ~ 13 0
40 HH 56 HH 16 32 29.32 -44 54 57.5           ~ 42 0
41 HH 80 HH 18 19 06.1 -20 51 49           ~ 104 0
42 HH 81 HH 18 19 06.7 -20 51 06           ~ 93 0
43 HH 32 HH 19 20 30 +11 02.0           ~ 109 1
44 HH 234 HH 21 43 29.779 +66 08 38.06           ~ 6 0
45 HH 111F HH ~ ~           ~ 17 0
46 HH 111E HH ~ ~           ~ 9 0
47 HH 111D HH ~ ~           ~ 6 0
48 HH 111G HH ~ ~           ~ 4 0
49 HH 111J HH ~ ~           ~ 13 0
50 HH 111L HH ~ ~           ~ 18 0

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