Young kinematically decoupled components in early-type galaxies by McDermid, R, Emsellem, E, Shapiro, K, Bacon, R, Bureau, M, Cappellari, M, Davies, R, de Zeeuw, P, Falcon-Barroso, J, Krajnovic, D, Kuntschner, H, Peletier, R, Sarzi, M

“…We find that galaxies exhibiting the youngest global stellar populations (as measured with SAURON) often contain a distinctly young central region (on scales of a few hundred parsec or less) compared to the rest of the galaxy. …”

The SAURON project - VIII. OASIS/CFHT integral-field spectroscopy of elliptical and lenticular galaxy centres by McDermid, R, Emsellem, E, Shapiro, K, Bacon, R, Bureau, M, Cappellari, M, Davies, R, de Zeeuw, T, Falcon-Barroso, J, Krajnovic, D, Kuntschner, H, Peletier, R, Sarzi, M

“…We compare the intrinsic size and luminosity-weighted stellar age of all the visible KDCs in the full SAURON sample, and find two types of components: kiloparsec-scale KDCs, which are older than 8 Gyr, and are found in galaxies with little net rotation; and compact KDCs, which have intrinsic diameters of less than a few hundred parsec, show a range of stellar ages from 0.5 to 15 Gyr (with 5/6 younger than 5 Gyr), are found exclusively in fast-rotating galaxies, and are close to counter-rotating around the same axis as their host. …”

Stellar kinematics and populations of early-type galaxies with the SAURON and OASIS integral-field spectrographs by McDermid, R, Bacon, R, Kuntschner, H, Emsellem, E, Shapiro, K, Bureau, M, Cappellari, M, Davies, R, Falcon-Barroso, J, Krajnovic, D, Peletier, R, Sarzi, M, de Zeeuw, T

“…We focus on the stellar content, and examine properties on both kiloparsec scales with SAURON, and scales of 100's of parsecs with OASIS. These complementary studies reveal two types of kinematically distinct components (KDCs), differing primarily in their intrinsic sizes. …”

NGC 1266 AS A LOCAL CANDIDATE FOR RAPID CESSATION OF STAR FORMATION by Alatalo, K, Nyland, K, Graves, G, Deustua, S, Griffin, K, Duc, P, Cappellari, M, McDermid, R, Davis, T, Crocker, A, Young, L, Chang, P, Scott, N, Cales, S, Bayet, E, Blitz, L, Bois, M, Bournaud, F, Bureau, M, Davies, R, de Zeeuw, P, Emsellem, E, Khochfar, S, Krajnovic, D, Kuntschner, H

“…Both the SAURON maps of stellar population age and the Swift UVOT observations demonstrate the presence of young (<1 Gyr) stellar populations within the central 1 kpc, while existing Combined Array for Research in Millimeter-Wave Astronomy CO(1-0) maps indicate that the sites of current star formation are constrained to only the inner few hundred parsecs of the galaxy. The optical spectrum of NGC 1266 from Moustakas and Kennicutt reveal a characteristic poststarburst (K+A) stellar population, and Davis et al. confirm that ionized gas emission in the system originate from a shock. …”