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Do luminous elliptical galaxies have young disks?

ASTROPHYSICS AND SPACE SCIENCE 277 (2001) 341-341

Authors:

RM McDermid, H Kuntschner, RL Davies
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Dynamical modeling of the counterrotating stellar core in IC 1459

ASTR SOC P 230 (2001) 439-440

Authors:

M Cappellari, EK Verolme, GAV Kleijn, M Franx, PT de Zeeuw, RP van der Marel, CM Carollo
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Effects of anisotropy on the central dark mass in NGC 3115. New results from integral field spectroscopy

ESO ASTROPHY SYMP (2001) 88-90

Authors:

SW Anders, N Thatte, R Genzel

Abstract:

We report new results on the stellar kinematics and the mass distribution of the galaxy NGC 3115 based on NIR integral field spectroscopic data. Investigations using long slit spectroscopic data have yielded strong evidence for the presence of a massive dark object of ca. 10(9) solar masses. NGC 3115 therefore appears to be a prominent candidate for hosting a black hole in its center. We demonstrate that with integral field spectroscopy the rotation and velocity dispersion can be much better constrained by sampling in both spatial dimensions. This yields revised and more secure results.
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Galaxy mapping with the SAURON integral-field spectrograph: The star formation history of NGC 4365

ASTROPHYSICAL JOURNAL 548:1 (2001) L33-L36

Authors:

RL Davies, H Kuntschner, E Emsellem, R Bacon, M Bureau, CM Carollo, Y Copin, BW Miller, G Monnet, RF Peletier, EK Verolme, PT de Zeeuw
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Gas and stellar kinematics in NGC 6240

IAU SYMP (2001) 220-221

Authors:

M Tecza, L Tacconi, R Genzel

Abstract:

We present results from sub-arcsecond near infrared integral field spectroscopy and millimeter IRAM-interferometry of the interacting galaxy NGC 6240. Using stellar absorption features in the NIR we determined the stellar velocity field and dispersion in NGC 6240. The two NIR emission peaks show rapid rotation and indicate a prograde encounter of the two progenitor galaxies. From the velocity dispersion an excess mass between the two nuclei is detected. This mass can be attributed to a massive rotating disk of cold CO gas located between the nuclei.
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