ar X iv : a st ro - p h / 04 10 70 2 v 1 2 8 O ct 2 00 4 Star Complexes and Starburst Clumps in Spiral

ar X iv : a st ro - p h / 04 10 44 6 v 1 1 9 O ct 2 00 4 Sulfur chemistry and isotopic ratios in the starburst galaxy

Based on observations of the most abundant sulfur-bearing molecules (H 2 S, CS, NS, SO, H 2 CS, OCS, and SO 2) carried out with the IRAM 30m telescope 1 and SEST 2 , we present the first analysis of the sulfur chemistry of an extragalac-tic source, the nuclear region of the starburst galaxy NGC 253. This is the first time that H 2 S and, tentatively, H 2 CS are detected towards the nucleus of a...

ar X iv : a st ro - p h / 02 10 42 8 v 1 1 8 O ct 2 00 2 Star Clusters in Interacting Galaxies : The Case of M 51 Nate

ar X iv : a st ro - p h / 04 03 54 8 v 1 2 3 M ar 2 00 4 1 2 - 100 KEV SPECTRUM OF AN ACTIVELY STAR FORMING GALAXY

We compute the synthetic 2-100 keV spectrum of an actively star forming galaxy. To this aim we use a luminosity function of point sources appropriate for starbursts (based on Chandra data), as well as the types of stellar sources and their corresponding spectra. Our estimates indicate that a Compton spectral component resulting from scattering of SN-accelerated electrons by ambient FIR and CMB ...

ar X iv : a st ro - p h / 04 03 54 8 v 2 1 4 M ay 2 00 4 1 2 - 100 KEV SPECTRUM OF AN ACTIVELY STAR FORMING GALAXY

We compute the synthetic 2-100 keV spectrum of an actively star forming galaxy. To this aim we use a luminosity function of point sources appropriate for starbursts (based on Chandra data), as well as the types of stellar sources and their corresponding spectra. Our estimates indicate that a Compton spectral component resulting from scattering of SN-accelerated electrons by ambient FIR and CMB ...

ar X iv : a st ro - p h / 04 10 65 7 v 1 27 O ct 2 00 4 Detection of the linear radical HC 4 N in IRC + 10216

We report the detection of the linear radical HC 4