Galaxy formation and evolution

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The Nature of the Mid-Infrared Population from Optical Identifications of the ELAIS-S1 Sample

The Astronomical Journal American Astronomical Society 127:6 (2004) 3075-3088

Authors:

F La Franca, C Gruppioni, I Matute, F Pozzi, C Lari, M Mignoli, G Zamorani, DM Alexander, F Cocchia, L Danese, A Franceschini, P Héraudeau, JK Kotilainen, MJD Linden-Vørnle, S Oliver, M Rowan-Robinson, S Serjeant, L Spinoglio, A Verma
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Using MgII to Investigate Quasars and Their Black-hole Masses

AGN Physics with the Sloan Digital Sky Survey 311 (2004) 79-79

Authors:

M Jarvis, R McLure
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IRAC Imaging of Lockman Hole

(2004)

Authors:

J-S Huang, P Barmby, GG Fazio, SP Willner, G Wilson, D Rigopoulou, A Alonso-Herrero, H Dole, E Egami, E Le Floc'h, C Papovich, PG Perez-Gonzalez, J Rigby, CW Engelbracht, K Gordon, D Hines, M Rieke, GH Rieke, K Meisenheimer, S Miyzaki
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Extremely Red Objects in The Lockman Hole

(2004)

Authors:

G Wilson, J-S Huang, PG Perez-Gonzalez, E Egami, RJ Ivison, JR Rigby, A Alonso-Herrero, P Barmby, H Dole, GG Fazio, E Le Floc'h, C Papovich, D Rigopoulou, L Bai, CW Engelbracht, D Frayer, KD Gordon, DC Hines, KA Misselt, S Miyazaki, JE Morrison, GH Rieke, MJ Rieke, J Surace
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Formation and evolution of S0 galaxies: A SAURON case study of NGC 7332

Monthly Notices of the Royal Astronomical Society 350:1 (2004) 35-46

Authors:

J Falcón-Barroso, RF Peletier, E Emsellem, H Kuntschner, K Fathi, M Bureau, R Bacon, M Cappellari, Y Copin, RL Davies, T De Zeeuw

Abstract:

We present SAURON integral-field observations of the S0 galaxy NGC 7332. Existing broadband ground-based and Hubble Space Telescope (HST) photometry reveals a double-disc structure and a boxy bulge interpreted as a bar viewed close to edge-on. The SAURON two-dimensional stellar kinematic maps confirm the existence of the bar and inner disc but also uncover the presence of a cold counter-rotating stellar component within the central 250 pc. The Hβ and [O III] emission line maps show that the ionized gas has a complex morphology and kinematics, including both a component counter-rotating with respect to the stars and a fainter corotating one. Analysis of the absorption line-strength maps show that NGC 7332 is young everywhere. The presence of a large-scale bar can explain most of those properties, but the fact that we see a significant amount of unsettled gas, together with a few peculiar features in the maps, suggests that NGC 7332 is still evolving. Interactions as well as bar-driven processes must thus have played an important role in the formation and evolution of NGC 7332, and presumably of S0 galaxies in general.
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