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Herschel-ATLAS: the link between accretion luminosity and star formation in quasar host galaxies
Rodighiero, G.; Ivison, R. J.; de Zotti, G. +28 more
We use the science demonstration field data of the Herschel Astrophysical Terahertz Large Area Survey to study how star formation, traced by the far-infrared Herschel data, is related to both the accretion luminosity and redshift of quasars selected from the Sloan Digital Sky Survey (SDSS) and the 2dF-SDSS luminous red galaxy (LRG) and Quasar Spec…
Compact molecular disc and ionized gas outflows within 350 pc of the active nucleus of Mrk 1066
Storchi-Bergmann, Thaisa; Riffel, Rogemar A.
We present stellar and gaseous kinematics of the inner ≈350-pc radius of the Seyfert galaxy Mrk 1066 derived from J and Kl bands data obtained with the Gemini's Near-Infrared Integral Field Spectrograph (NIFS) at a spatial resolution of ≈35 pc. The stellar velocity field is dominated by rotation in the galaxy plane but shows an S-shape …
On stellar limb darkening and exoplanetary transits
Howarth, Ian D.
This paper examines how to compare stellar limb-darkening coefficients evaluated from model atmospheres with those derived from photometry. Different characterizations of a given model atmosphere can give quite different numerical results (even for a given limb-darkening 'law'), while light-curve analyses yield limb-darkening coefficients that are…
Dynamical versus stellar masses of ultracompact dwarf galaxies in the Fornax cluster
Mieske, Steffen; Infante, Leopoldo; Hilker, Michael +1 more
The origin of ultracompact dwarf (UCD) galaxies, compact extragalactic stellar systems, is still a puzzle for present galaxy formation models. We present the comprehensive analysis of high-resolution multi-object spectroscopic data for a sample of 24 Fornax cluster UCDs obtained with VLT with Fibre Large Array Multi Element Spectrograph (FLAMES). …
AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South: source catalogue and number counts
Yun, M. S.; Iono, D.; Khan, S. +20 more
We present results of a 1.1-mm deep survey of the AKARI Deep Field South (ADF-S) with AzTEC mounted on the Atacama Submillimetre Telescope Experiment (ASTE). We obtained a map of 0.25-deg2 area with an rms noise level of 0.32-0.71 mJy. This is one of the deepest and widest maps thus far at millimetre and submillimetre wavelengths. We un…
Global properties of 'ordinary' early-type galaxies: photometry and spectroscopy of stars and globular clusters in NGC 4494
Spitler, Lee R.; Forbes, Duncan A.; Romanowsky, Aaron J. +7 more
We present a comprehensive analysis of the spatial, kinematic and chemical properties of stars and globular clusters (GCs) in the `ordinary' elliptical galaxy NGC 4494 using data from the Keck and Subaru telescopes. We derive galaxy surface brightness and colour profiles out to large galactocentric radii. We compare the latter to metallicities der…
New limb-darkening coefficients and synthetic photometry for model-atmosphere grids at Galactic, LMC and SMC abundances
Howarth, Ian D.
New grids of ATLAS9 models have been calculated using revised convection parameters and updated opacity-distribution functions (ODFs), for chemical compositions intended to be representative of solar, [M/H] =+0.3, +0.5, Large Magellanic Cloud and Small Magellanic Cloud abundances. The grids cover Teff= 3.5-50 kK, from log g= 5.0 to the …
Direct N-body simulations of globular clusters - I. Palomar 14
Kroupa, Pavel; Hilker, Michael; Küpper, Andreas H. W. +3 more
We present the first ever direct N-body computations of an old Milky Way globular cluster over its entire lifetime on a star-by-star basis. Using recent GPU hardware at Bonn University, we have performed a comprehensive set of N-body calculations to model the distant outer halo globular cluster Palomar 14 (Pal 14). Pal 14 is unusual in that its me…
The central black hole mass of the high-σ but low-bulge-luminosity lenticular galaxy NGC 1332
Saglia, R. P.; Nowak, N.; Thomas, J. +3 more
The masses of the most massive supermassive black holes (SMBHs) predicted by the MBH-σ and MBH-L relations appear to be in conflict. Which of the two relations is the more fundamental one remains an open question. NGC 1332 is an excellent example that represents the regime of conflict. It is a massive lenticular galaxy which …
The SAURON project - XIX. Optical and near-infrared scaling relations of nearby elliptical, lenticular and Sa galaxies
Peletier, R. F.; Kuntschner, H.; de Zeeuw, P. T. +16 more
We present ground-based MDM Observatory V-band and Spitzer/InfraRed Array Camera 3.6-?m-band photometric observations of the 72 representative galaxies of the SAURON survey. Galaxies in our sample probe the elliptical E, lenticular S0 and spiral Sa populations in the nearby Universe, both in field and cluster environments. We perform aperture phot…