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Disentangling the near-infrared continuum spectral components of the inner 500 pc of Mrk 573: two-dimensional maps
Kraemer, S. B.; Crenshaw, D. M.; Storchi-Bergmann, T. +5 more
We present a near-infrared (near-IR) study of the spectral components of the continuum in the inner 500 × 500 pc2 of the nearby Seyfert galaxy Mrk 573 using adaptive optics near-IR integral field spectroscopy with the instrument near-infrared integral field spectrograph of the Gemini North Telescope at a spatial resolution of ∼50 pc. We…
Dynamics of Large-scale Coronal Structures as Imaged during the 2012 and 2013 Total Solar Eclipses
Morgan, Huw; Habbal, Shadia R.; Druckmüller, Miloslav +2 more
White light images acquired at the peak of solar activity cycle 24, during the total solar eclipses of 2012 November 13 and 2013 November 3, serendipitously captured erupting prominences accompanied by CMEs. Application of state-of-the-art image processing techniques revealed the intricate details of two “atypical” large-scale structures, with str…
Hiding in plain sight - recovering clusters of galaxies with the strongest AGN in their cores
Magnier, E. A.; Waters, C.; Edge, A. C. +8 more
A key challenge in understanding the feedback mechanism of active galactic nucleus (AGN) in Brightest Cluster Galaxies (BCGs) is the inherent rarity of catching an AGN during its strong outburst phase. This is exacerbated by the ambiguity of differentiating between AGN and clusters in X-ray observations. If there is evidence for an AGN then the X-…
Post-perihelion photometry of dust grains in the coma of 67P Churyumov-Gerasimenko
Jorda, L.; Lara, L. M.; Bertaux, J. -L. +51 more
We present a photometric analysis of individual dust grains in the coma of comet 67P/Churyumov-Gerasimenko using OSIRIS images taken from 2015 July to 2016 January. We analysed a sample of 555 taken during 18 d at heliocentric distances ranging between 1.25 and 2.04 au and at nucleocentric distances between 80 and 437 km. An automated method to de…
The Multiplicity of M Dwarfs in Young Moving Groups
Yee, Jennifer C.; Montet, Benjamin T.; Bowler, Brendan P. +12 more
We image 104 newly identified low-mass (mostly M-dwarf) pre-main sequence (PMS) members of nearby young moving groups (YMGs) with Magellan Adaptive Optics (MagAO) and identify 27 stellar binaries with instantaneous projected separation as small as 40 mas. Fifteen were previously unknown. The total number of multiple systems in this sample includin…
The AB Doradus system revisited: The dynamical mass of AB Dor A/C
Ros, E.; Lestrade, J. -F.; Tognelli, E. +6 more
Context. The study of pre-main-sequence (PMS) stars with model-independent measurements of their masses is essential to check the validity of theoretical models of stellar evolution. The well-known PMS binary AB Dor A/C is an important benchmark for this task, since it displays intense and compact radio emission, which makes possible the applicati…
Bidirectional reflectance and VIS-NIR spectroscopy of cometary analogues under simulated space conditions
Thomas, Nicolas; Fornasier, Sonia; Pommerol, Antoine +7 more
This work is intended to be the second publication in a series of papers reporting on the spectro-photometric properties of cometary analogues measured in the laboratory. Herein, we provide in-situ hyperspectral imaging data in the 0.40-2.35 µm range from three sublimation experiments under simulated space conditions in thermal vacuum from s…
Meet the family - the catalog of known hot subdwarf stars
Gänsicke, Boris T.; Telting, John H.; Østensen, Roy H. +6 more
In preparation for the upcoming all-sky data releases of the Gaia mission, we compiled a catalog of known hot subdwarf stars and candidates drawn from the literature and yet unpublished databases. The catalog contains 5613 unique sources and provides multi-band photometry from the ultraviolet to the far infrared, ground based proper motions, class…
Discovery of a soft X-ray 8 mHz QPO from the accreting millisecond pulsar IGR J00291+5934
Sanna, A.; Ferrigno, C.; Papitto, A. +7 more
We report on the analysis of the peculiar X-ray variability displayed by the accreting millisecond X-ray pulsar IGR J00291+5934 in a 80 ks-long joint NuSTAR and XMM-Newton observation performed during the source outburst in 2015. The light curve of the source is characterized by a flaring-like behaviour, with typical rise and decay time-scales of …
Data processing pipeline for Herschel HIFI
Shipman, R. F.; Sanchez, E.; Braine, J. +26 more
Context. The HIFI instrument on the Herschel Space Observatory performed over 9100 astronomical observations, almost 900 of which were calibration observations in the course of the nearly four-year Herschel mission. The data from each observation had to be converted from raw telemetry into calibrated products and were included in the Herschel Scie…