2003A&A...400..903J

Query : 2003A&A...400..903J

2003A&A...400..903J - Astronomy and Astrophysics, volume 400, 903-915 (2003/3-4)

The ISOGAL field FC-01863+00035: Mid-IR interstellar extinction and stellar populations.

JIANG B.W., OMONT A., GANESH S., SIMON G. and SCHULLER F.

Abstract (from CDS):

A 0.35°x0.29° field centered at l=-18.63°, b=0.35° was observed during the ISOGAL survey by ISOCAM imaging at 7µm and 15µm. 648 objects were detected and their brightness are measured. By combining with the DENIS data in the near-infrared J and KS bands, one derives the extinction at 7µm through AKs-A7=0.35(AJ-AKs) which yields A7/AV∼0.03 from the near-IR extinction values of van de Hulst-Glass (Glass, 1999MNRAS.308..127G). The extinction structure along the line of sight is then determined from the values of J-KS or KS-[7] of the ISOGAL sources identified as RGB or early AGB stars with mild mass-loss. The distribution of AV ranges from 0 to ∼45 and it reflects the concentration of the extinction in the spiral arms. Based on their locations in color-magnitude diagrams and a few cross-identifications with IRAS and MSX sources, the nature of objects is discussed in comparison with the case of a low extinction field in Baade's Window. Most of the objects are either AGB stars with moderate mass loss rate or luminous RGB stars. Some of them may be AGB stars with high mass loss rate. In addition, a few young stellar objects (YSOs) are present.

Abstract Copyright: ∼

Journal keyword(s): stars: AGB and post-AGB - stars: late-type - stars: mass loss - stars: pre-main sequence - ISM: dust, extinction - Galaxy: stellar content - Infrared: stars

VizieR on-line data: <Available at CDS (J/A+A/400/903): table5.dat>

CDS comments: Table 5: numbering 'NNN' in 1st col. not used in SIMBAD, nor in catalog II/243.

Simbad objects: 26

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Number of rows : 26
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 ISOGAL-P J164932.7-435810 LP? 16 49 32.6118376920 -43 58 10.228753092           ~ 2 0
2 IRAS 16459-4354 OH* 16 49 33.99072 -43 59 16.7136           O-rich 4 0
3 ISOGAL-P J164941.4-435744 LP? 16 49 41.3721369552 -43 57 45.062436132           ~ 2 0
4 ISOGAL-P J164955.1-435642 MIR 16 49 55.09 -43 56 42.0           ~ 1 0
5 ISOGAL-P J164958.1-435242 NIR 16 49 58.03 -43 52 42.3           ~ 1 0
6 ISOGAL-P J164958.3-435802 LP? 16 49 58.3073586120 -43 58 02.065297924           ~ 2 0
7 IRAS 16464-4359 HII 16 50 01.0 -44 05 03           ~ 5 0
8 IRAS 16465-4344 LP? 16 50 06.1858501704 -43 50 05.196590592           ~ 2 0
9 ISOGAL-P J165008.5-440553 Y*? 16 50 08.53 -44 05 53.2           ~ 2 0
10 ISOGAL-P J165009.6-440351 MIR 16 50 09.58 -44 03 51.8           ~ 1 0
11 ISOGAL-P J165010.1-440146 MIR 16 50 10.07 -44 01 46.0           ~ 1 0
12 IRAS 16466-4353 AB? 16 50 11.24208 -43 58 49.8792           ~ 2 0
13 ISOGAL-P J165011.6-435205 LP? 16 50 11.5278681168 -43 52 05.826398484           ~ 2 0
14 ISOGAL-P J165017.4-440004 NIR 16 50 17.33 -44 00 04.5           ~ 1 0
15 ISOGAL-P J165023.9-435832 Y*? 16 50 23.93 -43 58 32.6           ~ 2 0
16 ISOGAL-P J165027.0-435021 MIR 16 50 23.93 -43 58 32.6           ~ 1 0
17 IRAS 16468-4349 * 16 50 25.607 -43 54 57.96           ~ 1 0
18 IRAS 16469-4356 Y*? 16 50 30.2 -44 01 40           ~ 2 0
19 IRAS 16469-4348 Y*? 16 50 31.5 -43 53 53           ~ 2 0
20 ISOGAL-P J165036.4-440703 NIR 16 50 36.3909210696 -44 07 04.827742572           ~ 1 0
21 ISOGAL-P J165046.6-435659 NIR 16 50 46.59 -43 56 59.0           ~ 1 0
22 ISOGAL-P J165048.3-440523 NIR 16 50 48.22 -44 05 23.9           ~ 1 0
23 IRAS 16472-4351 AB? 16 50 53.72232 -43 57 02.8044           ~ 3 0
24 IRAS 16475-4349 AB? 16 51 06.30480 -43 54 39.1716           ~ 2 0
25 ISOGAL-P J165110.6-435803 NIR 16 51 10.51 -43 58 03.7           ~ 1 0
26 NAME Sgr I Window reg 17 56 -29.0           ~ 69 0

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