ISO spectroscopy of nearby starburst galaxies
IAU SYMP (1999) 745-746
Abstract:
We present spectroscopic mid-IR observations of prominent starburst galaxies obtained with the short wavelength spectrometer onboard the Infrared Space Observatory. The wavelength range accessible by ISO-sws (2.5-45 pm) contains a large number of emission lines of atomic and molecular hydrogen and several other atomic species. In this paper we discuss the interpretation of the [NeIII] 15.5 mum/[NeII] 12.8 mum line-ratio, the faint [OIV] 25.9 mum line and the pure rotational lines of molecular hydrogen observed in our target galaxies.Morphology and evolution of ultraluminous IR galaxies
ASTROPHYSICS AND SPACE SCIENCE 269 (1999) 399-402
Proposed identification of Hubble Deep Field submillimeter source HDF 850.1
ASTRONOMY & ASTROPHYSICS 347:3 (1999) 809-820
The ISO-SWS survey of molecular hydrogen lines in active galaxies
ESA SP PUBL 427 (1999) 909-912
Abstract:
We present a survey of molecular hydrogen line emission in nearby starburst and Seyfert galaxies. Excitation temperatures and gas masses for loci-lying energy levels of Hz are derived from the observed pure rotational lines. The H-2 (0-0) S(1) line in Seyferts is emitted by a "warm" gas at temperature of 120-140 K. This component accounts for 0.2-20 per cent of the total gas content. In starbursts the temperature of the S(1) emitting gas is somewhat higher (up to 210 K) and contributes typically a few per cent to the total gas mass (up to 9 per cent in M82). The S(5) and S(7) lines trace a "hotter" gas component at temperatures of about 1100K (up to 1700K in IC342) both in Seyfert and starburst galaxies. The excitation of the molecular hydrogen in starbursts and some of the Seyfert galaxies is dominated by UV-fluorescence. However it cannot be excluded that a part of the "warm" H-2 gas is thermally excited. For some of the Seyferts indications for shock excitation are found.Ultraluminous IRAS Galaxies as seen with ISO
ESA SP PUBL 427 (1999) 833-838