1994A&A...292..580G

Query : 1994A&A...292..580G

1994A&A...292..580G - Astronomy and Astrophysics, volume 292580-592 (1994/12-2)

Near-infrared spectroscopy and imaging of Herbig-Haro objects.

GREDEL R.

Abstract (from CDS):

The results of a near-infrared study of the Herbig-Haro objects HH 43, HH 54, HH 56, HH 99A, HH 106, and HH 120 are presented. The H- and K-band spectra show molecular hydrogen emission that arises from vibrational levels v' ≤3. The inferred population distribution is thermal in all objects, and can be well described by single excitation temperatures ranging from 2000-2700 K. Non-thermal excitation scenarios, such as fluorescence or H2 formation in excited levels, or excitations in an UV or X-ray heated gas, are not observed. Emission from [FeII] is present towards all objects. Near-infrared images were obtained towards HH 43, HH 54, and HH 120. The morphology of the H2 and [FeII] emission is similar on large scales but differs in the detail. The H2 and [FeII] observations are difficult to reconcile with the predictions of C-type shock models. They indicate the presence of multiple, or curved J-shocks, where [FeII] arises in the faster, dissociative sections, and where H2 arises in the slow, non-dissociative parts of the shocks.

Abstract Copyright: ∼

Journal keyword(s): ISM: jets and outflows - ISM: molecules - infrared: interstellar: lines and bands - stars: pre-main sequence

Simbad objects: 34

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Number of rows : 34
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 12C HH 03 28 58.0 +31 20 23           ~ 5 0
2 HH 12D HH 03 28 58.02 +31 20 10.0           ~ 8 0
3 HH 11 HH 03 29 03 +31 15.8           ~ 155 1
4 2MASS J03290842+3115284 NIR 03 29 08.420 +31 15 28.48           ~ 229 1
5 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 1027 0
6 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1249 2
7 HH 2A HH 05 36 25.26 -06 47 10.9           ~ 45 0
8 2MASS J05380752-0708291 Y*O 05 38 07.525 -07 08 29.20           K7 47 0
9 HH 43 HH 05 38 10.4 -07 09 25           ~ 100 0
10 HH 43B HH 05 38 10.8 -07 09 23           ~ 12 0
11 LDN 1641 MoC 05 39.0 -07 00           ~ 502 0
12 NGC 2023 RNe 05 41 37.9 -02 15 52           ~ 657 1
13 HH 91A HH 05 41 58.2 -01 13 37           ~ 13 0
14 HH 111 HH 05 51 44.207 +02 48 33.87           ~ 418 0
15 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
16 HH 120 HH 08 09 32.6 -36 04 55           ~ 59 0
17 CG 30 CGb 08 09 32.8 -36 05 00           ~ 136 0
18 Ass Pup OB 3 As* 08 18.1 -35 46           ~ 26 0
19 HH 54A HH 12 55 49 -76 56.4           ~ 10 0
20 HH 54 HH 12 55 49.5 -76 56 08           ~ 119 0
21 HH 54B HH 12 55 50.3 -76 56 23           ~ 30 0
22 HH 54C HH 12 55 50.4 -76 56 05           ~ 13 0
23 HH 54K HH 12 55 53.5 -76 56 22           ~ 11 0
24 HH 54E HH 12 55 53.6 -76 56 20           ~ 14 0
25 HH 56 HH 16 32 29.32 -44 54 57.5           ~ 42 0
26 HH 57 HH 16 32 31.96 -44 55 37.2           ~ 69 1
27 IRAS 16289-4449 Or* 16 32 32.19264 -44 55 30.6552       15.95   ~ 149 1
28 HH 106 HH 18 29 18.8 +01 14 17           ~ 15 0
29 HH 107 HH 18 29 48.0 +01 25 55           ~ 10 0
30 HH 108 HH 18 35 36.2 -00 35 09           ~ 19 0
31 HH 101N HH 19 01 35.09 -37 02 55.4           ~ 13 0
32 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0
33 HH 99A HH 19 02 05.41 -36 54 39.6           ~ 19 0
34 SA 187- * ~ ~           ~ 7 0

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