1999A&A...347..841H

Query : 1999A&A...347..841H

1999A&A...347..841H - Astronomy and Astrophysics, volume 347841-849 (1999/7-3)

HST observations of the very young SMC "blob" N88A.

HEYDARI-MALAYERI M., CHARMANDARIS V., DEHARVENG L., ROSA M.R. and ZINNECKER H.

Abstract (from CDS):

High-resolution Hubble Space Telescope images have allowed us for the first time to resolve the compact SMC ionized ``blob'' N88A (diameter ∼3.5" or 1pc). This very young HII region, which is hatching from its natal molecular cloud, is heavily affected by absorbing dust associated with the cloud. The interstellar reddening towards N88A is on average AV∼1.5mag and strikingly rises to more than 3.5 mag in a narrow dust band crossing the core of the HII region. Such a high extinction is unprecedented for an HII region in the metal-poor SMC. We present the photometry of some 60 stars lying towards the OB association at the center of which lies N88A. The exciting star(s) of N88A is not detected, due to the heavy extinction. The chronology of star formation is discussed for the whole region.

Abstract Copyright: ∼

Journal keyword(s): stars: early-type - ISM: dust, extinction - ISM: HII regions - ISM: individual objects: N 88A (SMC) - galaxies: Magellanic Clouds

VizieR on-line data: <Available at CDS (J/A+A/347/841): table1.dat table1.tex>

Nomenclature: Table 1: [HCD99] NN N=63 among (Nos 1-79). Fig.1: [HCD99] A (Nos A-H).

Simbad objects: 92

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Number of rows : 92
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 HD 7113 Em* 01 09 12.94464 -73 11 38.8968     11.7     ~ 131 0
3 LHA 115-N 84 HII 01 14 27.7 -73 12 51           ~ 68 0
4 [HCD99] 8 * 01 23 57.75 -73 10 17.8           ~ 1 0
5 2dFS 3657 * 01 23 59.5096059216 -73 09 48.362709744   16.14       B0.5V: 7 0
6 SMCSGS-FS 56 * 01 24 02.2355823840 -73 09 47.960358336           B0.5V: 2 0
7 [HCD99] 75 * 01 24 02.35 -73 10 01.5           ~ 1 0
8 SMCSGS-FS 57 * 01 24 02.4248280072 -73 09 25.275260556           B5V: 2 0
9 [HCD99] 30 * 01 24 03.05 -73 09 34.5           ~ 1 0
10 [W94] DEM S 161 6 * 01 24 04 -73 09.3   16.65 16.88     B0III 3 0
11 OGLE SMC-ECL- 6081 EB* 01 24 04.6318878936 -73 09 07.604989200   15.74 15.892   16.006 B1.5V: 11 0
12 OGLE SMC-ECL- 6082 EB* 01 24 04.85 -73 09 14.8     16.042   16.151 B0V: 9 0
13 [TLF2003] 14 RB? 01 24 05.0854599144 -73 10 03.138992076           ~ 3 0
14 [TLH2010] 16 * 01 24 05.16 -73 09 14.1           ~ 2 0
15 [TLH2010] 14 * 01 24 05.18 -73 09 14.7           ~ 2 0
16 2MASS J01240558-7309054 * 01 24 05.5222563984 -73 09 05.180420808           ~ 3 0
17 [HCD99] 32 * 01 24 06.48 -73 09 33.0           ~ 1 0
18 [TLH2010] 52 * 01 24 07.01 -73 09 01.8           ~ 2 0
19 [TLH2010] 12 * 01 24 07.30 -73 09 15.3           ~ 2 0
20 [HCD99] 25 * 01 24 07.39 -73 10 01.0           ~ 1 0
21 [TLH2010] 15 * 01 24 07.45 -73 09 14.3           ~ 3 0
22 [HCD99] 60 * 01 24 07.65 -73 09 02.2           ~ 2 0
23 [HCD99] 43 * 01 24 07.69 -73 09 17.9           ~ 1 0
24 [TLH2010] 5 * 01 24 07.69 -73 09 20.6           ~ 2 0
25 LHA 115-N 88A HII 01 24 07.823 -73 09 03.77   13.25 12.18     ~ 83 1
26 [HCD99] 2 * 01 24 08.02 -73 09 03.8           ~ 1 0
27 LHA 115-N 88 HII 01 24 08.1 -73 09 04           ~ 72 1
28 [HCD99] 1 * 01 24 08.10 -73 09 04.0           ~ 1 0
29 [TLH2010] 9 * 01 24 08.72 -73 09 18.8           ~ 2 0
30 [HCD99] 62 * 01 24 08.883 -73 08 56.16     17.46     ~ 5 0
31 LHA 115-N 88B HII 01 24 09.09 -73 09 06.0           ~ 6 0
32 [TLH2010] 31 * 01 24 09.09 -73 09 06.0     15.68     O9.5V 4 0
33 [TLH2010] 59 * 01 24 09.86 -73 08 54.1   16.37 16.54     ~ 5 0
34 [TLH2010] 58 * 01 24 10.81 -73 08 55.8           ~ 2 0
35 2MASS J01241091-7309208 * 01 24 10.9362017424 -73 09 20.650294944   15.44 15.65     B0V: 8 0
36 [TLH2010] 2 * 01 24 11.86 -73 09 25.8           ~ 2 0
37 [TLH2010] 11 * 01 24 12.53 -73 09 15.6     15.97     B0 5 0
38 [TLH2010] 17 * 01 24 12.57 -73 09 13.3           ~ 2 0
39 OGLE SMC-ECL- 6089 EB* 01 24 13.7751441888 -73 09 19.302017904     14.780   14.939 O9.5III 10 0
40 [HCD99] 24 * 01 24 13.82 -73 10 01.5           ~ 1 0
41 [HCD99] 67 * 01 24 13.95 -73 08 36.7           ~ 1 0
42 [HCD99] 21 * 01 24 14.42 -73 10 03.1           ~ 1 0
43 [HCD99] 56 * 01 24 14.64 -73 09 05.4           ~ 1 0
44 [HCD99] 16 * 01 24 14.68 -73 10 10.2           ~ 1 0
45 [HCD99] 54 * 01 24 15.05 -73 09 06.8           ~ 1 0
46 [HCD99] 22 * 01 24 15.30 -73 10 01.9           ~ 1 0
47 [HCD99] 23 * 01 24 16.08 -73 10 01.4           ~ 1 0
48 [HCD99] 17 * 01 24 16.27 -73 10 08.3           ~ 1 0
49 [HCD99] 70 * 01 24 16.32 -73 08 14.9           ~ 1 0
50 [HCD99] 68 * 01 24 17.58 -73 08 29.3           ~ 1 0
51 SMCSGS-FS 78 * 01 24 20.610 -73 10 09.90           B2V: 2 0
52 [HCD99] 53 * 01 24 20.76 -73 09 08.0           ~ 1 0
53 [HCD99] 14 * 01 24 21.08 -73 10 10.1           ~ 1 0
54 2dFS 3678 * 01 24 22.1725069104 -73 09 43.156195092   16.48       B2.5V: 5 0
55 2dFS 3679 * 01 24 22.2456506280 -73 08 41.382924684           B1.5V: 6 0
56 [HCD99] 69 * 01 24 24.35 -73 08 28.1           ~ 1 0
57 SMCSGS-FS 85 * 01 24 25.1875519416 -73 10 24.762183996           B0.7V: 2 0
58 [HCD99] 18 * 01 24 26.37 -73 10 06.2           ~ 1 0
59 [HCD99] 65 * 01 24 26.7403576392 -73 08 44.055327300           B0.5V: 2 0
60 [HCD99] 5 * 01 24 27.12 -73 10 24.2           ~ 2 0
61 [TLF2003] 6 RB? 01 24 27.3244547736 -73 10 30.847846008           ~ 3 0
62 [HCD99] 7 * 01 24 27.39 -73 10 19.5           ~ 1 0
63 [HCD99] 40 * 01 24 27.56 -73 09 17.9           ~ 1 0
64 [HCD99] 6 * 01 24 27.58 -73 10 20.0           ~ 1 0
65 [HCD99] 11 * 01 24 27.83 -73 10 13.1           ~ 1 0
66 HW 82 Cl* 01 24 28 -73 10.3           ~ 13 1
67 [HCD99] 9 * 01 24 28.00 -73 10 15.1           ~ 1 0
68 [HCD99] 13 * 01 24 28.09 -73 10 12.4           ~ 1 0
69 [HCD99] 12 * 01 24 28.23 -73 10 13.0           ~ 1 0
70 [HCD99] 10 * 01 24 28.29 -73 10 13.6           ~ 1 0
71 [HCD99] 19 * 01 24 28.52 -73 10 05.2           ~ 1 0
72 [HCD99] 77 * 01 24 29.48 -73 10 17.9           ~ 1 0
73 LHA 115-N 89 HII 01 25 53.9 -73 22 41           ~ 23 0
74 DEM S 167 HII 01 29 09.9 -73 24 50           ~ 15 0
75 LHA 115-N 90 HII 01 29 30.15 -73 33 10.5           ~ 69 2
76 2MASS J04542610-6911022 Y*O 04 54 26.101 -69 11 02.23 11.66 12.93 12.68   13.24 O3 13 0
77 LHA 120-N 11 HII 04 56 51.4 -66 24 24           ~ 275 0
78 LHA 120-N 45 HII 05 22 48.0 -66 41 06           ~ 11 0
79 NGC 2029 SNR 05 35 15.5 -67 34 04     12.29     ~ 108 0
80 NGC 2032 HII 05 35 23.5 -67 34 56           ~ 75 1
81 LHA 120-N 59C EmO 05 35 39.1 -67 37 07           ~ 17 0
82 [JHS86] N160A-9 HII 05 39 43.3 -69 38 51           ~ 23 0
83 [GSL2002] 122 HII 05 39 46.1 -69 38 37           ~ 23 0
84 NAME N159 Blob in LMC HII 05 40 04.2 -69 44 43           ~ 40 0
85 LHA 115-N 88F HII ~ ~           ~ 2 0
86 LHA 115-N 88E HII ~ ~           ~ 2 0
87 LHA 115-N 88D HII ~ ~           ~ 2 0
88 LHA 115-N 88C HII ~ ~           ~ 2 0
89 LHA 115-N 88H HII ~ ~           ~ 2 0
90 LHA 115-N 88I EmO ~ ~           ~ 1 0
91 LHA 115-N 88G HII ~ ~           ~ 2 0
92 LHA 115-N 88J EmO ~ ~           ~ 1 0

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