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4 papers · 2 filters
Excited OH+, H2O+, and H3O+ in NGC 4418 and Arp 220
E. González-Alfonso, J. Fischer, S. Bruderer +15
We report on Herschel/PACS observations of absorption lines of OH+, H2O+ and H3O+ in NGC 4418 and Arp 220. Excited lines of OH+ and H2O+ with E_lower of at least 285 and \sim200 K,…
New observations of the gas cloud G2 in the Galactic Center
S. Gillessen, R. Genzel, T. K. Fritz +6
We present new observations of the recently discovered gas cloud G2 currently falling towards the massive black hole in the Galactic Center. The new data confirm that G2 is on a hi…
Herschel-PACS Observations of Far-IR CO Line Emission in NGC 1068: Highly Excited Molecular Gas in the Circumnuclear Disk
S. Hailey-Dunsheath, E. Sturm, J. Fischer +13
We report the detection of far-IR CO rotational emission from the prototypical Seyfert 2 galaxy NGC 1068. Using Herschel-PACS, we have detected 11 transitions in the J_upper=14-30…
Physics of the Galactic Center Cloud G2, on its Way towards the Super-Massive Black Hole
Andreas Burkert, Mark Schartmann, Christian Alig +4
The origin, structure and evolution of the small gas cloud, G2, is investigated, that is on an orbit almost straight into the Galactic central supermassive black hole (SMBH). G2 is…