Search Publications
ALMA observations of a metal-rich damped Ly α absorber at z = 2.5832: evidence for strong galactic winds in a galaxy group
Fynbo, J. P. U.; Dessauges-Zavadsky, M.; Christensen, L. +7 more
We report on the results of a search for CO(3-2) emission from the galaxy counterpart of a high-metallicity Damped Ly α Absorber (DLA) at z = 2.5832 towards the quasar Q0918+1636. We do not detect CO emission from the previously identified DLA galaxy counterpart. The limit we infer on Mgas/M⋆ is in the low end of the range fo…
Li in Open Clusters: Cool Dwarfs in the Young, Subsolar-metallicity Cluster M35 (NGC 2168)
Twarog, Bruce A.; Anthony-Twarog, Barbara J.; Deliyannis, Constantine P. +4 more
Hydra spectra of 85 G-K dwarfs in the young cluster M35 near the Li 6708 Å line region are analyzed. From velocities and Gaia astrometry, 78 are likely single-star members that, combined with previous work, produce 108 members with T eff ranging from 6150 to 4000 K as defined by multicolor, broadband photometry, E(B - V) = 0.20, and [Fe…
A Study of X-Ray Emission of Galaxies Hosting Molecular Outflows (MOX Sample)
Gandhi, Poshak; Ricci, Claudio; Guainazzi, Matteo +5 more
We have carried out an extensive X-ray spectral analysis of a sample of galaxies exhibiting molecular outflows (MOX sample) to characterize the X-ray properties and investigate the effect of active galactic nuclei (AGNs) on the dynamical properties of the molecular outflows (MOs). We find that the X-ray bolometric correction (L 2-10 keV…
A TESS Dress Rehearsal: Planetary Candidates and Variables from K2 Campaign 17
Bieryla, Allyson; Latham, David W.; Quinn, Samuel N. +40 more
We produce light curves for all ∼34,000 targets observed with K2 in Campaign 17 (C17), identifying 34 planet candidates, 184 eclipsing binaries, and 222 other periodic variables. The forward-facing direction of the C17 field means follow-up can begin immediately now that the campaign has concluded and interesting targets have been identified. The …
Solar wind dynamics around a comet. A 2D semi-analytical kinetic model
Holmström, M.; Behar, E.; Nilsson, H. +5 more
Aims: We aim at analytically modelling the solar wind proton trajectories during their interaction with a partially ionised cometary atmosphere, not in terms of bulk properties of the flow but in terms of single particle dynamics.
Methods: We first derive a generalised gyromotion, in which the electric field is reduced to its motional co…
The Initial Mass Function in the Coma Berenices Dwarf Galaxy from Deep Near-infrared HST Observations
Brown, Thomas M.; Gennaro, Mario; Conroy, Charlie +6 more
We use deep Hubble Space Telescope (HST) WFC3/IR imaging to study the initial mass function (IMF) of the ultra-faint dwarf galaxy Coma Berenices (Com Ber). Our observations reach the lowest stellar mass ever probed in a resolved galaxy, with 50% completeness at ∼0.17 M ⊙. Unresolved background galaxies, however, limit our purity below ∼…
Red, redder, reddest: SCUBA-2 imaging of colour-selected Herschel sources
Ivison, R. J.; Clements, D. L.; Scott, D. +28 more
High-redshift, luminous, dusty star-forming galaxies (DSFGs) constrain the extremity of galaxy formation theories. The most extreme are discovered through follow-up on candidates in large area surveys. Here, we present extensive 850 µm SCUBA-2 follow-up observations of 188 red DSFG candidates from the Herschel Multitiered Extragalactic Surve…
BGM FASt: Besançon Galaxy Model for big data. Simultaneous inference of the IMF, SFH, and density in the solar neighbourhood
Figueras, F.; Antoja, T.; Mor, R. +1 more
Aims: We develop a new theoretical framework to generate Besançon Galaxy Model Fast Approximate Simulations (BGM FASt) to address fundamental questions of the Galactic structure and evolution performing multi-parameter inference. As a first application of our strategy we simultaneously infer the initial-mass function (IMF), the star formation…
A Thorough View of the Nuclear Region of NGC 253: Combined Herschel, SOFIA, and APEX Data Set
Menten, K. M.; Güsten, R.; Requena-Torres, M. A. +5 more
We present a large set of spectral lines detected in the 40″ central region of the starburst galaxy NGC 253. Observations were obtained with the three instruments SPIRE, PACS, and HIFI on board the Herschel Space Observatory, upGREAT on board the SOFIA airborne observatory, and the ground-based Atacama Pathfinder EXperiment telescope. Combining th…
Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA)
Snellen, I. A. G.; Van Eylen, V.; Pollacco, D. +6 more
Context. The Multi-site All-Sky CAmeRA (MASCARA) aims to find the brightest transiting planet systems by monitoring the full sky at magnitudes 4 < V < 8.4, taking data every 6.4 s. The northern station has been operational on La Palma since February 2015. These data can also be used for other scientific purposes, such as the study of variabl…