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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…
NGC1266 as a Local Candidate for Rapid Cessation of Star Formation
Katherine Alatalo, Kristina Nyland, Genevieve Graves +27
We present new Spectrographic Areal Unit for Research on Optical Nebulae (SAURON) integral-field spectroscopy and Swift Ultraviolet Optical Telescope (UVOT) observations of molecul…
The ATLAS project - XXV: Two-dimensional kinematic analysis of simulated galaxies and the cosmological origin of fast and slow rotators
T. Naab, L. Oser, E. Emsellem +26
We present a detailed two-dimensional stellar dynamical analysis of a sample of 44 cosmological hydrodynamical simulations of individual central galaxies and their satellites. Kine…
Dwarfs walking in a row. The filamentary nature of the NGC3109 association
M. Bellazzini, T. Oosterloo, F. Fraternali +1
We re-consider the association of dwarf galaxies around NGC3109, whose known members were NGC3109, Antlia, Sextans A and Sextans B, based on a new updated list of nearby galaxies a…
Evidence for an Interaction in the Nearest Starbursting Dwarf Irregular Galaxy IC 10
David L. Nidever, Trisha Ashley, Colin T. Slater +10
Using deep 21-cm HI data from the Green Bank Telescope we have detected an ~18.3 kpc-long gaseous extension associated with the starbursting dwarf galaxy IC 10. The newly-found fea…
Radio Jets Clearing the Way Through a Galaxy: Watching Feedback in Action
Raffaella Morganti, Judit Fogasy, Zsolt Paragi +2
The energy released by an active galactic nucleus (AGN) has a strong impact on the surrounding interstellar medium (ISM). This feedback is considered to be the regulating factor fo…
The Lockman Hole project: gas and galaxy properties from a stacking experiment
K. Geréb, R. Morganti, T. A. Oosterloo +2
We perform an HI stacking analysis to study the relation between HI content and optical/radio/IR properties of galaxies located in the Lockman Hole area. In the redshift range cove…
Neutral atomic hydrogen (HI) gas evolution in field galaxies at z ~ 0.1 and 0.2
Jonghwan Rhee, Martin A. Zwaan, Frank H. Briggs +4
We measure the neutral atomic hydrogen (HI) gas content of field galaxies at intermediate redshifts of z ~ 0.1 and z ~ 0.2 using hydrogen 21-cm emission lines observed with the Wes…
HI in HO: Hoag's object revisited
Noah Brosch, Ido Finkelman, Tom Oosterloo +2
We present new HI observations of Hoag's Object obtained with the Westerbork Synthesis Radio Telescope (WSRT). The data show that the luminous optical ring around the elliptical bo…
Is GBT 1355+5439 a dark galaxy?
T. A. Oosterloo, G. H. Heald, W. J. G. de Blok
We present HI imaging of GBT 1355+5439 performed with the Westerbork Synthesis Radio Telescope. This is a dark HI object recently discovered close to the nearby galaxy M101. We fin…
The location and impact of jet-driven outflows of cold gas: the case of 3C293
Elizabeth Mahony, Raffaella Morganti, Bjorn Emonts +2
The nearby radio galaxy 3C293 is one of a small group of objects where extreme outflows of neutral hydrogen have been detected. However, due to the limited spatial resolution of pr…
The ATLAS3D Project -- XXIII. Angular momentum and nuclear surface brightness profiles
Davor Krajnovic, A. M. Karick, Roger L. Davies +22
[Abridged and Edited] We investigate nuclear light profiles in 135 ATLAS3D galaxies for which the Hubble Space Telescope (HST) imaging is available and compare them to the large sc…
HALOGAS: Extraplanar gas in NGC 3198
G. Gentile, G. I. G. Jozsa, P. Serra +6
We present the analysis of new, deep HI observations of the spiral galaxy NGC 3198, as part of the HALOGAS (Westerbork Hydrogen Accretion in LOcal GAlaxieS) survey, with the main a…
The Bluedisks project, a study of unusually HI-rich galaxies: I. HI Sizes and Morphology
Jing Wang, Guinevere Kauffmann, Gyula I. G. Józsa +10
We introduce the "Bluedisk" project, a large program at the Westerbork Synthesis Radio Telescope (WSRT) that has mapped the HI in a sample of 23 nearby galaxies with unusually high…
A Pilot for a VLA HI Deep Field
Ximena Fernández, J. H. van Gorkom, Kelley M. Hess +12
High-resolution 21-cm HI deep fields provide spatially and kinematically resolved neutral gas maps at different redshifts, which are key to understanding galaxy evolution across co…
Probing the mass assembly of massive nearby galaxies with deep imaging
Pierre-Alain Duc
According to a popular scenario supported by numerical models, the mass assembly and growth of massive galaxies, in particular the Early-Type Galaxies (ETGs), is, below a redshift…
Tracing the extreme interplay between radio jets and the ISM in IC5063
Raffaella Morganti, Wilfred Frieswijk, Raymond J. B. Oonk +2
We report the discovery with the Atacama Pathfinder EXperiment (APEX) of an outflow of molecular gas in the radio-loud Seyfert galaxy IC5063 (z = 0.0110). In addition to the emissi…
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…