2005A&A...434..497T


Query : 2005A&A...434..497T

2005A&A...434..497T - Astronomy and Astrophysics, volume 434, 497-506 (2005/5-1)

N88: The physical properties of a compact star-forming region and its neighbourhood in the SMC. II. H and H2 near infrared emission.

TESTOR G., LEMAIRE J.L., FIELD D. and CALLEJO G.

Abstract (from CDS):

This paper, the second in a series of papers on the conspicuous compact HII region N88A in the Small Magellanic Cloud, emphasizes the properties of the H2 emission as well as of the surrounding stellar content of the entire Henize region N88. Using VJK photometry and stellar evolutionary models our analysis of N88 reveals a miscellaneous population of evolved stars of low and intermediate masses (1.2-8M) in an age range of 40Myr to 6Gyr. The majority of these stars are found in the cluster HW 82 which also contains several main sequence stars. AV in N88A is revisited using near-IR Pδ, Pγ and Pβ Paschen emission lines. Spectroscopic measurements of the H2 emission in Z, J, H and K bands allow, in conjunction with measurements in the visible, a full spectral coverage from 0.37µm to 2.45µm. Long slit spectroscopy through N88 and the nebulosity to the east clearly distinguishes the ionization zone in N88 characterized by H I and He I emission with pure H2 emission clearly delineated in the cloud nearby. The principal excitation mechanism for H2 is through fluorescent excitation in a photodissociation region associated with N88A.

Abstract Copyright:

Journal keyword(s): Magellanic Clouds - stars: formation - circumstellar matter - ISM: molecules - infrared: stars - stars: evolution

Nomenclature: Fig.1, Table 2: [TLF2003] NN N=22 added among (Nos 4-37).

Simbad objects: 39

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Number of rows : 39
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11228 1
2 HD 7644 * 01 15 37.3805399592 -45 26 36.254766156   10.89 10.29     F6V 9 0
3 2MASS J01235947-7309476 * 01 23 59.5096059216 -73 09 48.362709744   16.14       B0.5V: 7 0
4 [TLF2003] 16 * 01 24 02.4 -73 10 01           ~ 1 0
5 [TLF2003] 19 * 01 24 02.9 -73 09 48           ~ 1 0
6 [TLF2003] 20 * 01 24 02.9 -73 09 34           ~ 1 0
7 OGLE SMC-ECL- 6081 EB* 01 24 04.6318878936 -73 09 07.604989200   15.74 15.892   16.006 B1.5V: 10 0
8 OGLE SMC-ECL- 6082 EB* 01 24 04.85 -73 09 14.8     16.042   16.151 B0V: 8 0
9 [TLF2003] 14 RB? 01 24 05.0854599144 -73 10 03.138992076           ~ 3 0
10 [TLF2003] 21 * 01 24 06.5 -73 09 33           ~ 1 0
11 2MASS J01240712-7309156 * 01 24 07.12 -73 09 15.6   14.88 14.61     ~ 3 0
12 LHA 115-N 88A HII 01 24 07.823 -73 09 03.77   13.25 12.18     ~ 75 1
13 LHA 115-N 88 HII 01 24 08.1 -73 09 04           ~ 71 1
14 [HCD99] 62 * 01 24 08.883 -73 08 56.16     17.46     ~ 5 0
15 [TLH2010] 31 * 01 24 09.09 -73 09 06.0     15.68     O9.5V 4 0
16 LHA 115-N 88B HII 01 24 09.09 -73 09 06.0           ~ 6 0
17 [TLH2010] 59 * 01 24 09.86 -73 08 54.1   16.37 16.54     ~ 5 0
18 HW 81 Cl* 01 24 10 -73 09.3           ~ 13 1
19 2MASS J01241091-7309208 * 01 24 10.9362017424 -73 09 20.650294944   15.44 15.65     B0V: 7 0
20 [TLH2010] 11 * 01 24 12.53 -73 09 15.6     15.97     B0 5 0
21 OGLE SMC-ECL- 6089 EB* 01 24 13.7751441888 -73 09 19.302017904     14.780   14.939 O9.5III 9 0
22 SMCSGS-FS 76 * 01 24 15.650 -73 10 01.50           B0.7V: 2 0
23 [TLF2003] 12 * 01 24 16.3 -73 10 08           ~ 1 0
24 [TLF2003] 18 * 01 24 17.0 -73 09 53           ~ 1 0
25 [TLF2003] 37 * 01 24 21.0 -73 08 38           ~ 1 0
26 [TLF2003] 22 RB? 01 24 22.0207554672 -73 09 21.272337684           ~ 2 0
27 2MASS J01242222-7308413 * 01 24 22.2456506280 -73 08 41.382924684           B1.5V: 6 0
28 [TLF2003] 35 * 01 24 23.3 -73 08 46           ~ 1 0
29 [TLF2003] 8 * 01 24 24.5 -73 10 23           ~ 1 0
30 [TLF2003] 7 * 01 24 24.7 -73 10 25           ~ 1 0
31 SSTISAGEMA J012426.77-731021.0 RB? 01 24 26.773 -73 10 21.09           ~ 2 0
32 [TLF2003] 5 * 01 24 27.3 -73 10 24           ~ 1 0
33 [TLF2003] 10 * 01 24 27.310 -73 10 19.63           ~ 3 0
34 [TLF2003] 6 RB? 01 24 27.3244547736 -73 10 30.847846008           ~ 3 0
35 HW 82 Cl* 01 24 28 -73 10.3           ~ 13 1
36 SMCSGS-FS 89 * 01 24 28.000 -73 10 13.00   13.73 13.71     O9.5V: 3 0
37 [TLF2003] 13 * 01 24 28.3 -73 10 05           ~ 1 0
38 [TLF2003] 4 * 01 24 29.5 -73 10 18           ~ 1 0
39 NGC 2023 RNe 05 41 37.9 -02 15 52           ~ 635 1

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