Search Publications
Homogeneous transit timing analyses of 10 exoplanet systems
Aksaker, N.; Yılmaz, M.; Southworth, J. +19 more
We study the transit timings of 10 exoplanets in order to investigate potential transit timing variations in them. We model their available ground-based light curves, some presented here and others taken from the literature, and homogeneously measure the mid-transit times. We statistically compare our results with published values and find that th…
SU Lyn - a transient symbiotic star
Iłkiewicz, Krystian; Mikołajewska, Joanna; Scaringi, Simone +3 more
SU Lyn is a binary system composed of a white dwarf and a red giant star. Although it is known to be bright and variable at X-ray wavelengths, the optical counterpart of the source appeared as a single red giant without prominent emission lines. Because of the lack of optical features typical for interacting systems, the system was classified as a…
Differential attenuation in star-forming galaxies at 0.3 ≲ z ≲ 1.5 in the SHARDS/CANDELS field
Rodighiero, G.; Feltre, A.; Franceschini, A. +21 more
We use a sample of 706 galaxies, selected as [O II]λ3727 ([O II]) emitters in the Survey for High-z Absorption Red and Dead Sources (SHARDS) on the CANDELS/GOODS-N field, to study the differential attenuation of the nebular emission with respect to the stellar continuum. The sample includes only galaxies with a counterpart in the infrared and log<…
PHANGS: constraining star formation time-scales using the spatial correlations of star clusters and giant molecular clouds
Kruijssen, J. M. Diederik; Leroy, Adam K.; Rosolowsky, Erik +22 more
In the hierarchical view of star formation, giant molecular clouds (GMCs) undergo fragmentation to form small-scale structures made up of stars and star clusters. Here we study the connection between young star clusters and cold gas across a range of extragalactic environments by combining the high resolution (1″) PHANGS-ALMA catalogue of GMCs wit…
PASSAGES: the Large Millimeter Telescope and ALMA observations of extremely luminous high-redshift galaxies identified by the Planck
Frye, B. L.; Terlevich, E.; Terlevich, R. +20 more
The Planck All-Sky Survey to Analyze Gravitationally-lensed Extreme Starbursts project aims to identify a population of extremely luminous galaxies using the Planck all-sky survey and to explore the nature of their gas fuelling, induced starburst, and the resulting feedback that shape their evolution. Here, we report the identification of 22 high-…
SDSS-IV MaStar: theoretical atmospheric parameters for the MaNGA stellar library
Merrifield, Michael; Bizyaev, Dmitry; Law, David R. +16 more
We calculate the fundamental stellar parameters effective temperature, surface gravity, and iron abundance - Teff, log g, [Fe/H] - for the final release of the Mapping Nearby Galaxies at APO (MaNGA) Stellar Library (MaStar), containing 59 266 per-visit-spectra for 24 290 unique stars at intermediate resolution (R ~ 1800) and high S/N (m…
Weak gravitational lensing shear measurement with FPFS: analytical mitigation of noise bias and selection bias
Massey, Richard; Li, Xiangchong; Li, Yin
Dedicated 'Stage IV' observatories will soon observe the entire extragalactic sky, to measure the 'cosmic shear' distortion of galaxy shapes by weak gravitational lensing. To measure the apparent shapes of those galaxies, we present an improved version of the Fourier Power Function Shapelets (FPFS) shear measurement method. This now includes analy…
The merging galaxy cluster Abell 3266 at low radio frequencies
Bartalucci, I.; Riseley, C. J.; Johnston-Hollitt, M. +2 more
We present new low-frequency (ν = 88-216 MHz) observations of the complex merging galaxy cluster Abell 3266. These new observations are taken with the Murchison Widefield Array (MWA) in its Phase II 'extended', long-baseline configuration, offering the highest resolution low-frequency view of the cluster to date. We report on the detection of four…
Orion Bar as a window to the evolution of PAHs
Kirsanova, Maria S.; Boley, Paul A.; Murga, Maria S. +1 more
We investigate the mid-infrared (IR) emission in the Orion Bar photodissociation region (PDR), using archival photometric and spectroscopic observations from the United Kingdom Infrared Telescope (UKIRT), Spitzer, Infrared Space Observatory(ISO), and Stratospheric Observatory for Infrared Astronomy (SOFIA) telescopes. Specifically, we consider flu…
Probing the physicochemical properties of the Leo Ring and the Leo I group
Richter, Philipp; Charlton, Jane C.; Kacprzak, Glenn G. +6 more
We present an absorption line study of the physical and chemical properties of the Leo H I Ring and the Leo I Group as traced by 11 quasar sightlines spread over a ≈600 × 800 kpc2 region. Using HST/COS G130/G160 archival observations as constraints, we couple cloud-by-cloud, multiphase, Bayesian ionization modelling with galaxy property…