2006A&A...455..853M


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.11CEST14:40:46

2006A&A...455..853M - Astronomy and Astrophysics, volume 455, 853-870 (2006/9-1)

High spatial resolution mid-infrared spectroscopy of the starburst galaxies NGC3256, IIZw40 and Henize2-10.

MARTIN-HERNANDEZ N.L., SCHAERER D., PEETERS E., TIELENS A.G.G.M. and SAUVAGE M.

Abstract (from CDS):

In order to show the importance of high spatial resolution observations of extra-galactic sources when compared to observations obtained with larger apertures such as ISO, we present N-band spectra (8-13µm) of some locations in three starburst galaxies. In particular, we show the two galactic nuclei of the spiral galaxy NGC3256, the compact IR supernebula in the dwarf galaxy IIZw40 and the two brightest IR knots in the central starburst of the WR galaxy He2-10. The spectra were obtained with TIMMI2 on the ESO 3.6m telescope. An inventory of the spectra in terms of atomic fine-structure lines and molecular bands is presented. We show the value of these high spatial resolution data in constraining properties such as the extinction in the mid-IR, metallicity or stellar content (age, IMF, etc.). We have constrained the stellar content of the IR compact knot in IIZw40 by using the mid-IR fine-structure lines and setting restrictions on the nebular geometry. We have constructed a new mid-/far-IR diagnostic diagram based on the 11.2µm PAH and continuum, accessible to ground-based observations. We find that extra-galactic nuclei and star clusters observed at high spatial resolution (as is the case of the TIMMI2 observations) are closer in PAH/far-IR to compact HII regions, while galaxies observed by large apertures such as ISO are closer to exposed PDRs such as Orion. This is likely due to the aperture difference. We find a dependence between the presence of PAHs and the hardness of the radiation field as measured by the [SIV]/[NeII] ratio that may be explained by the PAH-dust competition for FUV photons or the relative contribution of the different phases of the interstellar medium.

Abstract Copyright:

Journal keyword(s): ISM: lines and bands - dust, extinction - HII regions - galaxies: starburst - infrared: galaxies

CDS comments: Paragraph 4.3.2. object IRAS 11143-6134 not identified.

Simbad objects: 30

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Number of rows : 30

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 IC 1795 HII 02 25 43.5 +62 06 13           ~ 230 0
2 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 974 3
3 M 42 HII 05 35 17.3 -05 23 28           ~ 3786 0
4 NAME OrionBar D5 HII 05 35 19.81 -05 25 10.0           ~ 9 0
5 * phi02 Ori PM* 05 36 54.3881859 +09 17 26.409553 5.70 5.04 4.09 3.33 2.78 G9.5IIIbFe-2.5 344 0
6 NAME Ori A MoC 05 38 -07.1           ~ 2756 0
7 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1785 1
8 NGC 2023 RNe 05 41 37.9 -02 15 52           ~ 581 1
9 UGCA 116 H2G 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 508 0
10 [CVS2005] L1 HII 08 36 15.014 -26 24 33.81           ~ 9 0
11 [CVS2005] L2 HII 08 36 15.060 -26 24 33.98           ~ 8 0
12 [KJ99] Knot 3 HII 08 36 15.127 -26 24 34.13           ~ 9 1
13 ESO 495-21 bCG 08 36 15.190 -26 24 33.66 12.04 11.93 11.45 11.09 12.3 ~ 513 3
14 [KJ99] Knot 4 HII 08 36 15.22 -26 24 34.3           ~ 9 1
15 HD 73603 * 08 38 40.2909694845 -19 44 12.823269132   8.02 6.39     M1III 25 0
16 * gam Pyx PM* 08 50 31.9228221 -27 42 35.442108 6.67 5.27 4.01 3.06 2.39 K2.5III 105 0
17 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5445 6
18 NGC 3256 IG 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 771 2
19 HD 90957 PM* 10 29 28.9734162313 -29 39 49.793640391   6.992 5.565     K3III 31 0
20 ESO 95-1 HII 12 09 01.260 -63 15 59.63     16.00     ~ 93 2
21 IRAS 12073-6233 mul 12 10 00.4 -62 49 57           ~ 48 0
22 [GS70] 298.2-00.3 HII 12 10 01.886 -62 50 00.46           ~ 66 1
23 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4087 3
24 M 83 SBG 13 37 00.919 -29 51 56.74 8.85 8.11 7.52 7.21   ~ 2296 2
25 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33   ~ 1285 4
26 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1514 0
27 NAME K 3-50A HII 20 01 45.6 +33 32 42           ~ 76 0
28 NGC 7023 RNe 21 01 36.9 +68 09 48           ~ 644 0
29 SH 2-159 Y*O 23 15 31.27440 +61 07 10.4450           ~ 176 2
30 [ATB2004] C2 Cl* ~ ~           ~ 8 0

    Equat.    Gal    SGal    Ecl

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2021.04.11-14:40:46

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