Search Publications
Hyper: Hybrid photometry and extraction routine
Pezzuto, S.; Fuller, G. A.; Traficante, A. +1 more
We present a new hybrid photometry and extraction routine called Hyper. It is designed to do compact source photometry, allowing for varying spatial resolution and sensitivity in multi-wavelength surveys. Hyper combines multi-Gaussian fitting with aperture photometry to provide reliable photometry in regions with variable backgrounds and in crowde…
BEER analysis of Kepler and CoRoT light curves. III. Spectroscopic confirmation of seventy new beaming binaries discovered in CoRoT light curves
Mazeh, T.; Tal-Or, L.; Faigler, S.
Context. The BEER algorithm searches stellar light curves for the BEaming, Ellipsoidal, and Reflection photometric modulations that are caused by a short-period companion. These three effects are typically of very low amplitude and can mainly be detected in light curves from space-based photometers. Unlike eclipsing binaries, these effects are not…
VEGAS-SSS. A VST early-type galaxy survey: analysis of small stellar systems. Testing the methodology on the globular cluster system in NGC 3115
Forbes, Duncan A.; Romanowsky, Aaron J.; Puzia, Thomas H. +11 more
We present a study of globular clusters (GCs) and other small stellar systems (SSSs) in the field of NGC 3115, observed as part of the ongoing wide-field imaging survey VEGAS, carried out with the 2.6 m VST telescope. We used deep g and i observations of NGC 3115, a well-studied lenticular galaxy that is covered excellently well in the scientific …
Stratospheric benzene and hydrocarbon aerosols detected in Saturn's auroral regions
Simon, A. A.; Spiga, A.; Fouchet, T. +3 more
Context. Saturn's polar upper atmosphere exhibits significant auroral activity; however, its impact on stratospheric chemistry (i.e. the production of benzene and heavier hydrocarbons) and thermal structure remains poorly documented.
Aims: We aim to bring new constraints on the benzene distribution in Saturn's stratosphere, to characterize po…
Cross-correlation of CFHTLenS galaxy catalogue and Planck CMB lensing using the halo model prescription
Kuntz, Adrien
Aims: I cross-correlate the galaxy counts from the Canada-France Hawaii Telescope Lensing Survey (CFHTLenS) galaxy catalogue and cosmic microwave background (CMB) convergence from the Planck data releases 1 (2013) and 2 (2015).
Methods: I improve on an earlier study by computing an analytic covariance from the halo model, implementing si…
Squeezed between shells? The origin of the Lupus I molecular cloud. APEX/LABOCA, Herschel, and Planck observations
Burkert, A.; Preibisch, T.; Stanke, T. +7 more
Context. The Lupus I cloud is found between the Upper Scorpius (USco) and the Upper Centaurus-Lupus (UCL) subgroups of the Scorpius-Centaurus OB association, where the expanding USco H I shell appears to interact with a bubble currently driven by the winds of the remaining B-stars of UCL.
Aims: We want to study how collisions of large-scale i…
An X-ray variable absorber within the broad line region in Fairall 51
Guainazzi, M.; Piconcelli, E.; Wilms, J. +3 more
Context. Fairall 51 is a polar-scattered Seyfert 1 galaxy, a type of active galaxy believed to represent a bridge between unobscured type-1 and obscured type-2 objects. Fairall 51 has shown complex and variable X-ray absorption, but little is known about its origin.
Aims: In our research, we observed Fairall 51 with the X-ray satellite Suzaku…
The XMM-Newton survey in the H-ATLAS field
Georgakakis, A.; Vignali, C.; Gilli, R. +8 more
Wide-area X-ray and far-infrared surveys are a fundamental tool to investigate the link between AGN growth and star formation, especially in the low-redshift universe (z ≲ 1). The Herschel Terahertz Large Area survey (H-ATLAS) has covered 550 deg2 in five far-infrared and sub-mm bands, 16 deg2 of which have been presented in …
Tightening the belt: Constraining the mass and evolution in SDC335
Avison, A.; Peretto, N.; Fuller, G. A. +3 more
Aims: Recent ALMA observations identified one of the most massive star-forming cores yet observed in the Milky Way: SDC335-MM1, within the infrared dark cloud SDC335.579-0.292. Along with an accompanying core MM2, SDC335 appears to be in the early stages of its star formation process. We aim to constrain the properties of the stars forming wi…
Signature of the presence of a third body orbiting around XB 1916-053
Sanna, A.; Romano, P.; Di Salvo, T. +9 more
Context. The ultra-compact dipping source