activity
19972023
most citedMonitoring stellar orbits around the Massive Black Hole in the Galactic Center

1.8k citations · 49.7k across the 370 of their papers we have counts for

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Showing 1998Show all

7 papers · 1 filter

astro-ph1998

A 1.4 GHz Survey of the Southern ELAIS Region

C. Gruppioni, P. Ciliegi, M. Rowan-Robinson +13

A deep survey of the European Large Area ISO Survey (ELAIS) field in the southern celestial hemisphere (hereinafter S1) has been carried out with the Australia Telescope Compact Ar…

astro-ph1998★ 200 cited

Counterrotating Nuclear Disks in Arp 220

K. Sakamoto, N. Z. Scoville, M. S. Yun +3

The ultraluminous infrared galaxy Arp 220 has been observed at 0.5" resolution in CO(2-1) and 1 mm continuum using the newly expanded Owens Valley Millimeter Array. The CO and cont…

astro-ph1998★ 78 cited

Infrared spectroscopy of NGC4151: Probing the obscured ionizing AGN continuum

Tal Alexander, Eckhard Sturm, Dieter Lutz +3

The ISO-SWS infrared spectroscopic observations of the nucleus of Seyfert galaxy NGC4151, which are described in a companion paper, are used together with a compilation of UV to IR…

astro-ph1998

Infrared spectroscopy of NGC 4151: ISO observations and NLR line profiles

E. Sturm, T. Alexander, D. Lutz +3

We present ISO-SWS and ISOPHOT-S spectroscopy of the Seyfert galaxy NGC 4151. We detect a total of 17 fine structure emission lines emitted by a wide range of low- and high-excitat…

astro-ph1998★ 296 cited

The nature and evolution of Ultraluminous Infrared Galaxies: A mid-infrared spectroscopic survey

D. Lutz, H. W. W. Spoon, D. Rigopoulou +2

We report the first results of a low resolution mid-infrared spectroscopic survey of an unbiased, far-infrared selected sample of 60 ultraluminous infrared galaxies, using ISOPHOT-…

astro-ph1998★ 96 cited

A Deep VLA survey at 20cm of the ISO ELAIS survey regions

P. Ciliegi, R. G. McMahon, G. Miley +11

We have used the Very Large Array(VLA) in C configuration to carry out a sensitive 20cm radio survey of regions of sky that have been surveyed in the Far Infra-Red over the wavelen…

astro-ph1998★ 34 cited

CII Emission From NGC 4038/39 (The Antennae)

T. Nikola, R. Genzel, F. Herrmann +5

We present observations of NGC 4038/39 in the [CII] 158 micron fine structure line taken with the MPE/UCB Far-infrared Imaging Fabry-Perot Interferometer (FIFI) on the KAO with 55"…