Publications (17)
The M31 Near-Infrared Period-Luminosity Relation and its non-linearity for Cep Variables with
Mihael Kodric, Arno Riffeser, Stella Seitz +7
We present the largest M31 near-infrared (F110W (close to J band), F160W (H band)) Cepheid sample so far. The sample consists of 371 Cepheids with photometry obtained from the HST…
Eight New Ultramassive Black Hole Masses confirm Best Correlation with Galaxy Core Sizes
Stefano de Nicola, Jens Thomas, Roberto P. Saglia +3
We analyse black-hole scaling relations at the high-mass end, focusing in particular on the regime of ultra-massive black holes, $\mathrm{M}_\mathrm{BH} > 10^{10}\,\mathrm{M}_\odot…
The VIRUS-dE Survey I: Stars in dwarf elliptical galaxies - 3D dynamics and radially resolved stellar initial mass functions
Mathias Lipka, Jens Thomas, Roberto Saglia +9
We analyse the stellar structure of a sample of dwarf ellipticals (dE) inhabiting various environments within the Virgo cluster. Integral-field observations with a high spectral re…
M31 PAndromeda Cepheid sample observed in four HST bands
Mihael Kodric, Arno Riffeser, Stella Seitz +5
Using the M31 PAndromeda Cepheid sample and the HST PHAT data we obtain the largest Cepheid sample in M31 with HST data in four bands. For our analysis we consider three samples: A…
HETDEX Public Source Catalog 1 -- Stacking 50K Lyman Alpha Emitters
Dustin Davis, Karl Gebhardt, Erin Mentuch Cooper +25
We describe the ensemble properties of the Lyman Alpha Emitters (LAEs) found in the HETDEX survey's first public data release, HETDEX Public Source Catalog 1 (Mentu…
Astro-WISE: Chaining to the Universe
Edwin A. Valentijn, John P. McFarland, Jan Snigula +18
The recent explosion of recorded digital data and its processed derivatives threatens to overwhelm researchers when analysing their experimental data or when looking up data items…
Correcting correlation functions for redshift-dependent interloper contamination
Daniel J. Farrow, Ariel G. Sánchez, Robin Ciardullo +14
The construction of catalogues of a particular type of galaxy can be complicated by interlopers contaminating the sample. In spectroscopic galaxy surveys this can be due to the mis…
Triaxial Schwarzschild Models of NGC 708: a 10-billion solar mass black hole in a low dispersion galaxy with a Kroupa IMF
Stefano de Nicola, Jens Thomas, Roberto P. Saglia +3
We report the discovery of a M Supermassive Black Hole (BH) at the centre of NGC 708, the Brightest Cluster Galaxy of Abell 262. Such high B…
Cepheids in M31 - The PAndromeda Cepheid sample
Mihael Kodric, Arno Riffeser, Ulrich Hopp +15
We present the largest Cepheid sample in M31 based on the complete Pan-STARRS1 survey of Andromeda (PAndromeda) in the , and b…
Detection of Lyman Continuum from 3.0 < z < 3.5 Galaxies in the HETDEX Survey
Dustin Davis, Karl Gebhardt, Erin Mentuch Cooper +15
Questions as to what drove the bulk reionization of the Universe, how that reionization proceeded, and how the hard ionizing radiation reached the intergalactic medium remain open…
Variable Star Monitoring in Local Group Dwarf Irregular Galaxies
Jan Snigula, Claus Goessl, Ulrich Hopp +1
Dwarf galaxies in the local group provide a unique astrophysical laboratory. Despite their proximity some of these systems still lack a reliable distance determination as well as s…
HETDEX Public Source Catalog 1: 220K Sources Including Over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey
Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis +43
We present the first publicly released catalog of sources obtained from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). HETDEX is an integral field spectroscopic survey…
Photometric Redshifts and Systematic Variations in the SEDs of Luminous Red Galaxies from the SDSS DR7
Natascha Greisel, Stella Seitz, Niv Drory +3
We describe the construction of a template set of spectral energy distributions (SEDs) for the estimation of photometric redshifts of luminous red galaxies (LRGs) with a Bayesian t…
Properties of M31. II: A Cepheid disk sample derived from the first year of PS1 PAndromeda data
Mihael Kodric, Arno Riffeser, Ulrich Hopp +14
We present a sample of Cepheid variable stars towards M31 based on the first year of regular M31 observations of the PS1 survey in the r_P1 and i_P1 filters. We describe the select…
Photometric redshifts for the CFHTLS-Wide
Fabrice Brimioulle, Michael Lerchster, Stella Seitz +2
We want to derive bias free, accurate photometric redshifts for those fields of the CFHTLS-Wide data which are covered in the u*, g', r', i' and z' filters and are public on Januar…
Triaxial Schwarzschild Models of Brightest Cluster Galaxies with Long-Slit LBT Data
Stefano de Nicola, Roberto P. Saglia, Jens Thomas +3
We present new long-slit stellar kinematics for a sample of 21 Brightest Cluster Galaxies (BCGs) and triaxial Schwarzschild models for 16 of these objects using our orbit modelling…
The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) Survey Design, Reductions, and Detections
Karl Gebhardt, Erin Mentuch Cooper, Robin Ciardullo +60
We describe the survey design, calibration, commissioning, and emission-line detection algorithms for the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). The goal of HETDEX…