Search Publications
The MUSE eXtremely deep field: first panoramic view of an Mg II emitting intragroup medium
Bacon, Roland; Garel, Thibault; Brinchmann, Jarle +21 more
Using the exquisite data from the MUSE eXtremely Deep Field (MXDF), we report the discovery of an Mg II emission nebula with an area above a 2σ significance level of 1000 proper kpc2. This provides the first panoramic view of the spatial distribution of magnesium in the intragroup medium of a low-mass group of five star-forming galaxies…
Equivalent widths of Lyman α emitters in MUSE-Wide and MUSE-Deep
Richard, J.; Verhamme, A.; Nanayakkara, T. +15 more
Context. The hydrogen Lyman α line is often the only measurable feature in optical spectra of high-redshift galaxies. Its shape and strength are influenced by radiative transfer processes and the properties of the underlying stellar population. High equivalent widths of several hundred Å are especially hard to explain by models and could point tow…
A detailed analysis of the Gl 486 planetary system
Amado, P. J.; Caballero, J. A.; Pallé, E. +64 more
Context. The Gl 486 system consists of a very nearby, relatively bright, weakly active M3.5 V star at just 8 pc with a warm transiting rocky planet of about 1.3 R⊕ and 3.0 M⊕. It is ideal for both transmission and emission spectroscopy and for testing interior models of telluric planets.
Aims: To prepare for future studi…
Understanding star formation in molecular clouds. IV. Column density PDFs from quiescent to massive molecular clouds
André, Ph.; Arzoumanian, D.; Könyves, V. +26 more
Probability distribution functions of the total hydrogen column density (N-PDFs) are a valuable tool for distinguishing between the various processes (turbulence, gravity, radiative feedback, magnetic fields) governing the morphological and dynamical structure of the interstellar medium. We present N-PDFs of 29 Galactic regions obtained from Hersc…
The 700 ks Chandra Spiderweb Field. I. Evidence for widespread nuclear activity in the protocluster
Pannella, M.; Fiore, F.; Pentericci, L. +21 more
Aims: We present an analysis of the 700 ks Chandra ACIS-S observation of the field around the radio galaxy J1140-2629 (the Spiderweb Galaxy) at z = 2.156, focusing on the nuclear activity in the associated large-scale environment.
Methods: We identified unresolved X-ray sources in the field down to flux limits of 1.3 × 10−16 a…
Assessment of [Fe/H] determinations for FGK stars in spectroscopic surveys
Casamiquela, L.; Soubiran, C.; Brouillet, N.
Context. The iron abundance [Fe/H] in the atmosphere of FGK-type stars is crucial in stellar and galactic physics. The number of stars with a measured value of [Fe/H] is increasing considerably thanks to spectroscopic surveys. However, different methodologies, inputs, and assumptions used in spectral analyses lead to different precisions in [Fe/H]…
The Lensed Lyman-Alpha MUSE Arcs Sample (LLAMAS). I. Characterisation of extended Lyman-alpha halos and spatial offsets
Bauer, F. E.; Richard, J.; Verhamme, A. +17 more
Aims: We present the Lensed Lyman-Alpha MUSE Arcs Sample (LLAMAS) selected from MUSE and HST observations of 17 lensing clusters. The sample consists of 603 continuum-faint (−23 < MUV < −14) lensed Lyman-α emitters (producing 959 images) with secure spectroscopic redshifts between 2.9 and 6.7. Combining the power of cluster m…
CHEX-MATE: Morphological analysis of the sample
Pointecouteau, E.; Pratt, G. W.; Rossetti, M. +17 more
A classification of the galaxy cluster's dynamical state is crucial when dealing with large samples. The identification of the most relaxed and most disturbed objects is necessary for both cosmological analysis, focused on spherical and virialised systems, and astrophysical studies, centred around all those micro-physical processes that take place…
First eROSITA study of nearby M dwarfs and the rotation-activity relation in combination with TESS
Salvato, M.; Wolf, J.; Stelzer, B. +3 more
We present the first results with the ROentgen Survey with an Imaging Telescope Array (eROSITA) on board the Russian Spektrum-Roentgen-Gamma mission, and we combine the new X-ray data with observations with the Transiting Exoplanet Survey Satellite (TESS). We used the SUPERBLINK proper motion catalog of nearby M dwarfs as input sample to search fo…
Systematic KMTNet planetary anomaly search. V. Complete sample of 2018 prime-field
Stassun, Keivan G.; Han, Cheongho; Udalski, Andrzej +69 more
We complete the analysis of all 2018 prime-field microlensing planets identified by the Korea Microlensing Telescope Network (KMTNet) Anomaly Finder. Among the ten previously unpublished events with clear planetary solutions, eight are either unambiguously planetary or are very likely to be planetary in nature: OGLE-2018-BLG-1126, KMT-2018-BLG-200…