2009ApJ...695L.120Y

Query : 2009ApJ...695L.120Y

2009ApJ...695L.120Y - Astrophys. J., 695, L120-L123 (2009/April-2)

Spitzer IRAC detection and analysis of shocked molecular hydrogen emission.

YBARRA J.E. and LADA E.A.

Abstract (from CDS):

We use statistical equilibrium equations to investigate the Infrared Array Camera (IRAC) color space of shocked molecular hydrogen. The location of shocked H2 in [3.6] - [4.5] versus [4.5] - [5.8] color is determined by the gas temperature and density of neutral atomic hydrogen. We find that high excitation H2 emission falls in a unique location in the color-color diagram and can unambiguously be distinguished from stellar sources. In addition to searching for outflows, we show that the IRAC data can be used to map the thermal structure of the shocked gas. We analyze archival Spitzer data of Herbig-Haro object HH 54 and create a temperature map, which is consistent with spectroscopically determined temperatures.

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Journal keyword(s): ISM: individual: HH 54 - ISM: jets and outflows - ISM: lines and bands

Simbad objects: 11

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Number of rows : 11
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 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
2 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
3 V* DK Cha TT* 12 53 17.2111480272 -77 07 10.736046012           F0e 149 0
4 HH 54A HH 12 55 49 -76 56.4           ~ 10 0
5 HH 54 HH 12 55 49.5 -76 56 08           ~ 119 0
6 HH 54B HH 12 55 50.3 -76 56 23           ~ 30 0
7 HH 54C HH 12 55 50.4 -76 56 05           ~ 13 0
8 HH 54M HH 12 55 51.50 -76 56 10.5           ~ 3 0
9 HH 54K HH 12 55 53.5 -76 56 22           ~ 11 0
10 HH 54E HH 12 55 53.6 -76 56 20           ~ 14 0
11 HH 54I HH 12 55 54.0 -76 56 06           ~ 3 0

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