Far infrared observations of the southern Galactic star forming complex around IRAS 09002-4732

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dc.creatorGhosh, S. K.
dc.creatorMookerjea, B.
dc.creatorRengarajan, T. N.
dc.creatorTandon, S. N.
dc.creatorVerma, R. P.
dc.date2000-10-03
dc.date.accessioned2026-07-07T01:55:47Z
dc.date.available2026-07-07T01:55:47Z
dc.descriptionThe Galactic star forming region in the southern sky, associated with IRAS 09002-4732 has been mapped simultaneously in two far infrared bands (148 & 209 um), with ~ 1' angular resolution. Fifteen sources including IRAS 08583-4719, 08589-4714, 09002-4732 and 09014-4736 have been detected, some of which are well resolved. Taking advantage of similar beams in the two bands, a reliable dust temperature [T(148/209)] map has been obtained, which detects colder dust (< 30 K) in this region. The HIRES processed IRAS maps at 12, 25, 60 & 100 um have also been used for comparison. The optical depth maps at 200 um & 100 um, generated from these FIR data quantify the spatial distribution of the dust. The diffuse emission from this entire region has been found to be 35 % of the total FIR luminosity. The slope of the IMF in the mass range 4-16 M_sun has been estimated to be -1.25^+0.75_-0.65 for this star forming complex. Radiative transfer models have been explored to fit available observations of the 4 IRAS sources and extract various physical parameters for corresponding dust-gas clouds. Whereas a constant radial density distribution is favoured in IRAS 08583-4719, 08589-4714 & 09002-4732, the r^-1 law is inferred for IRAS 09014-4736. The dust composition is found to be similar (Silicate dominated) in all the 4 sources. The luminosity per unit mass is found to be in the narrow range of 44-81 L_sun/M_sun for these star forming regions.
dc.description12 pages including 7 figures and 3 tables; To be published in Astronomy and Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/0010061
dc.identifierhttp://arxiv.org/abs/astro-ph/0010061
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/1777
dc.subjectAstrophysics
dc.titleFar infrared observations of the southern Galactic star forming complex around IRAS 09002-4732
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