Galaxy formation and evolution

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IFS and IR observations of star clusters in the Antennae

IAU SYMP 207 (2002) 378-382

Authors:

S Mengel, MD Lehnert, N Thatte, R Genzel

Abstract:

Over the past decade, it has become clear that interaction induced formation of compact young star clusters is a ubiquitous pheonomenon, and the understanding of this process is thought to also shed light on galaxy evolution in general, because these young clusters are widely believed to be the progenitors of a part of the globular cluster systems seen in local elliptical galaxies. We have observed the prototypical merger NGC 4038/4039 using near-infrared broad- and narrow band imaging, integral field spectroscopy and medium and high resolution spectroscopy. We find that all of the bright star clusters are young (< 20 Myrs), but the "overlap region" hosts the youngest clusters (similar to5 Myrs), while the nuclear starbursts started similar to100 Myrs ago. Photometric and dynamical masses range from 10(5) to a few x 10(6)M(circle dot). However, mass-to-light ratios vary from cluster to cluster and suggest differences in the contribution of low-mass stars. While clusters with a deficiency in low-mass stars are likely to evaporate before they are a Hubble time old, those with a high mass-to-light-ratio could represent young globulars.
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Near-IR Integral Field Spectroscopy of High-z Galaxies

Chapter in The Evolution of Galaxies, Springer Nature (2002) 529-530

Authors:

Andrew Bunker, Annette Ferguson, Rachel Johnson, Richard McMahon, Ian Parry, Max Pettini, Alfonso Aragón-Salamanca, Rachel Somerville, Nicole Vogt
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Near-infrared and optical morphology of spiral galaxies

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 143:1 (2002) 73-111

Authors:

PB Eskridge, JA Frogel, RW Pogge, AC Quillen, AA Berlind, RL Davies, DL DePoy, KM Gilbert, ML Houdashelt, LE Kuchinski, SV Ramírez, K Sellgren, A Stutz, DM Terndrup, GP Tiede
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Position-velocity diagrams of ionized gas in the inner regions of disk galaxies

ASTRONOMY & ASTROPHYSICS 388:1 (2002) 50-67

Authors:

JG Funes, EM Corsini, M Cappellari, A Pizzella, JCV Beltrán, C Scarlata, F Bertola
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Probing the stellar populations of early-type galaxies: the SAURON survey

ASTR SOC P 282 (2002) 189-200

Authors:

E Emsellem, R Davies, R McDermid, H Kuntschner, R Peletier, R Bacon, M Bureau, M Cappellari, Y Copin, B Miller, E Verolme, T de Zeeuw

Abstract:

The SAURON project will deliver two-dimensional spectroscopic data of a sample of nearby early-type galaxies with unprecedented quality. In this paper, we focus on the mapping of their stellar populations using the SAURON data, and present some preliminary results on a few prototypical cases.
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