2002A&A...388..326G


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.03CET19:25:17

2002A&A...388..326G - Astronomy and Astrophysics, volume 388, 326-334 (2002/6-2)

Spatial distribution of emission in unidentified infrared bands from the Midcourse Space Experiment survey.

GHOSH S.K. and OJHA D.K.

Abstract (from CDS):

The Midcourse Space Experiment (MSX) has surveyed the Galactic plane in four infrared bands between 6 and 25µm. Two of these bands cover several Unidentified Infrared emission Bands (UIBs). With the aim of extracting the spatial distribution of the UIB emission on a large scale, a scheme has been developed to model the MSX data with emission in the UIBs alongwith the underlying thermal continuum from the interstellar dust. In order to test this scheme, a sample of five Galactic compact H II regions (Sh-61, Sh-138, Sh-152, Sh-156, Sh-186; Zavagno & Ducci, 2001A&A...371..312Z) for which imaging data in some individual UIBs is available from ISOCAM measurements, has been studied. The results of this comparative study on a small angular scale are as follows: (i) the morphological details extracted from our scheme agree very well with those from the superior ISOCAM measurements; (ii) the integrated strength of UIBs extracted from the MSX database correlates extremely well with the sum of the strengths of individual UIBs measured from ISOCAM. This tight correlation is very encouraging and promises the potential of MSX database for the study of large-scale spatial distribution of UIB emission (and the carriers of UIBs) in the entire Galactic plane.

Abstract Copyright:

Journal keyword(s): infrared: ISM - ISM: lines and bands - ISM: H II regions

Simbad objects: 5

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Number of rows : 5

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 SH 2-186 HII 01 08 50.50 +63 07 34.2           ~ 39 1
2 EM* AS 310 Ae* 18 33 21.1940643266 -04 58 05.977829160   13.58 12.52 12.62   B1e 123 1
3 SH 2-138 HII 22 32 45.7 +58 28 20           ~ 108 2
4 SH 2-152 HII 22 58 40.862 +58 46 59.27           ~ 133 1
5 IC 1470 HII 23 05 09.9 +60 14 31   11.5       ~ 168 1

    Equat.    Gal    SGal    Ecl

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2020.12.03-19:25:17

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