Extremely Large Telescope

Research group

Research theme

Sub department

About

Related research groups

Spiral galaxies in the SAURON survey

Proceedings of the International Astronomical Union 3:S245 (2007) 271-276

Authors:

RF Peletier, K Ganda, J Falcón-Barroso, R Bacon, M Cappellari, RL Davies, PT De Zeeuw, E Emsellem, D Krajnović, H Kuntschner, RM McDermid, M Sarzi, G Van De Ven

Abstract:

We discuss some recent integral field spectroscopy using the SAURON instrument of a sample consisting of 24 early-type spirals, part of the SAURON Survey, and 18 late-type spirals. Using 2-dimensional maps of their stellar radial velocity, velocity dispersion, and absorption line strength, it is now much easier to understand the nature of nearby galactic bulges. We discuss a few highlights of this work, and point out some new ideas about the formation of galactic bulges. © 2008 Copyright International Astronomical Union 2008.
More details from the publisher
Details from ArXiV

Supermassive black holes from OASIS and SAURON integral-field kinematics

Proceedings of the International Astronomical Union 3:S245 (2007) 215-218

Authors:

M Cappellari, R Bacon, RL Davies, PT De Zeeuw, E Emsellem, J Falcón-Barroso, D Krajnović, H Kuntschner, RM McDermid, RF Peletier, M Sarzi, RCE Van Den Bosch, G Van De Ven

Abstract:

Supermassive black holes are a key element in our understanding of how galaxies form. Most of the progress in this very active field of research is based on just ~30 determination of black hole masses, accumulated over the past decade. We illustrate how integral-field spectroscopy, and in particular our OASIS modeling effort can help improve the current situation. © 2008 Copyright International Astronomical Union 2008.
More details from the publisher
Details from ArXiV

Very high contrast IFU spectroscopy of AB Doradus C: 9 mag contrast at 0.2

Monthly Notices of the Royal Astronomical Society 378:4 (2007) 1229-1236

Authors:

N Thatte, Abuter, Roberto, Tecza, Matthias, Nielsen, Eric
More details from the publisher
More details
Details from ArXiV

Absorption line-strengths of 18 late-type spiral galaxies observed with SAURON

(2007)

Authors:

Katia Ganda, Reynier F Peletier, Richard M McDermid, Jesús Falcón-Barroso, PT de Zeeuw, Roland Bacon, Michele Cappellari, Roger L Davies, Eric Emsellem, Davor Krajnović, Harald Kuntschner, Marc Sarzi, Glenn van de Ven
More details from the publisher

A Time Delay for the Largest Gravitationally Lensed Quasar: SDSS J1004+4112

Astrophysical Journal University of Chicago Press (2007)

Authors:

J Fohlmeister, CS Kochanek, EE Falco, J Wambsganss, N Morgan, CW Morgan, EO Ofek, D Maoz, CR Keeton, JC Barentine, G Dalton, J Dembicky, W Ketzeback, R McMillan, CS Peters

Abstract:

We present 426 epochs of optical monitoring data spanning 1000 days from December 2003 to June 2006 for the gravitationally lensed quasar SDSS J1004+4112. The time delay between the A and B images is 38.4+/-2.0 days in the expected sense that B leads A and the overall time ordering is C-B-A-D-E. The measured delay invalidates all published models. The models failed because they neglected the perturbations from cluster member galaxies. Models including the galaxies can fit the data well, but strong conclusions about the cluster mass distribution should await the measurement of the longer, and less substructure sensitive, delays of the C and D images. For these images, a CB delay of 681+/-15 days is plausible but requires confirmation, while CB and AD delays of >560 days and > 800 days are required. We clearly detect microlensing of the A/B images, with the delay-corrected flux ratios changing from B-A=0.44+/-0.01 mag in the first season to 0.29+/-0.01 mag in the second season and 0.32+/-0.01 mag in the third season.
More details from the publisher
Details from ArXiV