Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-12T20:32:01.626Z Has data issue: false hasContentIssue false
  • English
  • Français

ISO Observations of AGN and Ultraluminous IR Galaxies

Published online by Cambridge University Press:  14 August 2015

Alan F. M. Moorwood
Alan F. M. Moorwood*
Affiliation:
European Southern ObservatoryKarl-Schwarzschildstr. 2, D-85748 Garching

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

All the ISO instruments are contributing to the study of activity in galaxies of essentially all types. Although AGN's as such are pointlike, the beautiful CAM image of CenA shown by Catherine Cesarsky has given us the clearest view so far of its visually obscured nucleus and surrounding spiral disc embedded in an elliptical galaxy. The CAM CVF is also providing spectral images of the PAH features and important diagnostic ionic lines (e.g [NeII] and [NeIII]) in the circumnuclar regions of AGN and merging starburst systems (Vigroux et al., 1996). PHT is providing detailed spectral energy distributions over the complete 2.5-240µm range and PHTS is proving invaluable for assembling a catalogue of low resolution (R ⋍ 90) galaxy spectra covering the 6-12µm PAH features. SWS and LWS are generating higher resolution (R ⋍ 2000-200) spectra over the range 2.5-200µm such as that shown in Fig. 1. of the Circinus galaxy which exhibits both AGN and starburst activity and well illustrates the wide range of diagnostic features, many seen for the first time, accessible to ISO studies of galaxies. It shows the overall continuum with a peak around 100µm; PAH features and Si absorption which dominate the spectrum around 10µm; H recombination lines; H2 pure rotational emission lines; low ionization potential ionic lines excited by starburst activity and high excitation lines (up to ⋍ 300eV) excited by the visually obscured AGN.

Type
III. Special Scientific Sessions
Information
Highlights of Astronomy , Volume 11 , Issue 2: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part B), 1997 , 1998 , pp. 1131 - 1133
Copyright
Copyright © Kluwer 1998

References

Charmandaris, V., Mirabel, F., Tran, , et al. 1997, to appear in Mamon, , Thuân, Trinh Xuân & Van, Tran Thanh (eds.) Extragalactic Astronomy in the Infrared, Editions Frontiéres.Google Scholar
Fischer, J.,Satyapal, S., Luhman, M.L., et al. 1997, to appear in Mamon, , Thuân, Trinh Xuân & Van, Tran Thanh (eds.) Extragalactic Astronomy in the Infrared, Editions Frontiéres.Google Scholar
Genzel, R., Lutz, D., Sturm, E., et al. 1997, ApJ (submitted)Google Scholar
Klaas, U., Haas, M., Heinrichsen, I. & Schulz, B. 1997, A&A (in press)Google Scholar
Knapp, G.R., Rupen, M.P., Fich, M., Harper, D.A. & Wynn-Williams, C.G. 1996, A&A, 315, L75 Google Scholar
Luhman, M.L., Fischer, J., Satyapal, S., et al. 1997, to appear in Mamon, , Thuân, Trinh Xuân & Vân, Tran Thanh (eds.) Extragalactic Astronomy in the Infrared, Editions Frontiéres.Google Scholar
Lutz, D., Genzel, R., Sternberg, A. et al. 1996, A&A, 315, L137 Google Scholar
Lutz, D., Sturm, E., Genzel, R., et al 1997, Proceedings of the NGC1068 Ringberg Workshop (eds Gallimore, J.F. & Tacconi, L.J.), to appear in Ap&SS.Google Scholar
Moorwood, A.F.M., Lutz, D., Oliva, E., et al. 1996, A&A, 315, L109 Google Scholar
Moorwood, A.F.M. 1997, to appear in Mamon, , Thuân, Trinh Xuân & Vân, Tran Thanh (eds.) Extragalactic Astronomy in the Infrared, Editions Frontiéres.Google Scholar
Taniguchi, Y., Sato, Y., Kawara, K., Murayama, T. & Mouri., H. 1997, A&A, 318, Ll Google Scholar
Rigopoulou, D., Lutz, D., Genzel, R., et al. 1996, A&A, 315, L125 Google Scholar
Rodreguez Espinosa, J.M. & Pérez Garcia, A.M., Lemke, D., et al. 1996, A&A, 315, L129 Google Scholar
Rodriguez Espinosa, J.M. & Pérez García, A.M. 1997, A&A (submitted)Google Scholar
Skinner, C.J., Smith, H.A., Sturm, E. et al. 1997, Nature, 386, 472 Google Scholar
Sturm, E., Lutz, D., Genzel, R., et al. 1996, A&A, 315, L133 Google Scholar
Valentijn, E.A., van der Werf, P.P., de Graauw, Th. & de Jong, T. 1996, A&A, 315, L145 Google Scholar
Vigroux, L., Mirabel, F., Altieri, B. et al. 1996, A&A, 315, L93 Google Scholar