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Connection between dynamically derived IMF normalisation and stellar population parameters
Richard M. McDermid, Michele Cappellari, Katherine Alatalo +22
We report on empirical trends between the dynamically determined stellar initial mass function (IMF) and stellar population properties for a complete, volume-limited sample of 260…
The Atlas3D project - XXIV. The intrinsic shape distribution of early-type galaxies
Anne-Marie Weijmans, P. T. de Zeeuw, Eric Emsellem +23
We use the Atlas3D sample to perform a study of the intrinsic shapes of early-type galaxies, taking advantage of the available combined photometric and kinematic data. Based on our…
The ATLAS3D Project - XXVIII. Dynamically-driven star formation suppression in early-type galaxies
Timothy A. Davis, Lisa M. Young, Alison F. Crocker +22
We present measurements of the star formation rate (SFR) in the early-type galaxies (ETGs) of the ATLAS3D sample, based on Wide-field Infrared Survey Explorer (WISE) 22um and Galax…
The Atlas3D project - XXVI. HI discs in real and simulated fast and slow rotators
Paolo Serra, Ludwig Oser, Davor Krajnovic +24
One quarter of all nearby early-type galaxies (ETGs) outside Virgo host a disc/ring of HI with size from a few to tens of kpc and mass up to ~1e+9 solar masses. Here we investigate…
The Atlas3D project -- XXVII. Cold Gas and the Colours and Ages of Early-type Galaxies
L. M. Young, N. Scott, P. Serra +22
We present a study of the cold gas contents of the Atlas3D early-type galaxies, in the context of their optical colours, near-UV colours, and Hβ absorption line strengths. Early-ty…
The Atlas3D project - XIX. The hot-gas content of early-type galaxies: fast versus slow rotators
Marc Sarzi, Katherine Alatalo, Leo Blitz +20
For early-type galaxies, the ability to sustain a corona of hot, X-ray emitting gas could have played a key role in quenching their star-formation history. Yet, it is still unclear…
Scaling relations in early-type galaxies from integral-field stellar kinematics
M. Cappellari, N. Scott, K. Alatalo +22
We study the origin of the scaling relations of early-type galaxies (ETGs) by constructing detailed models of the stellar dynamics for the K-band selected, volume-limited ATLAS3D s…