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13 papers · 2 filters
Learning from the machine: interpreting machine learning algorithms for point- and extended- source classification
Xan Morice-Atkinson, Ben Hoyle, David Bacon
We investigate star-galaxy classification for astronomical surveys in the context of four methods enabling the interpretation of black-box machine learning systems. The first is ou…
INTEGRAL/SPI -ray line spectroscopy
Roland Diehl, Thomas Siegert, Jochen Greiner +7
INTEGRAL/SPI is a space-based coded mask telescope featuring a 19-element Germanium detector array for high-resolution gamma-ray spectroscopy, encapsulated in a scintillation detec…
STATCONT: A statistical continuum level determination method for line-rich sources
A. Sanchez-Monge, P. Schilke, A. Ginsburg +2
STATCONT is a python-based tool designed to determine the continuum emission level in spectral data, in particular for sources with a line-rich spectrum. The tool inspects the inte…
Flame: A Flexible Data Reduction Pipeline for Near-Infrared and Optical Spectroscopy
Sirio Belli, Alessandra Contursi, Richard I. Davies
We present flame, a pipeline for reducing spectroscopic observations obtained with multi-slit near-infrared and optical instruments. Because of its flexible design, flame can be ea…
Multi-conjugated adaptive optics imaging of distant galaxies -- A comparison of Gemini/GSAOI and VLT/HAWK-I data
Mischa Schirmer, Vincent Garrel, Gaetano Sivo +2
Multi-conjugated adaptive optics (MCAO) yield nearly diffraction-limited images at 2m wavelengths. Currently, GeMS/GSAOI at Gemini South is the only MCAO facility instrument at…
Complex spectral line profiles resulting from cryogenic deformation of the SINFONI/SPIFFI diffraction gratings
E. M. George, D. Gräff, M. Hartl +3
The integral field spectrograph, SPIFFI, has complex line profile shapes that vary with wavelength and pixel scale, the origins of which have been sought since the instrument const…