Search Publications
The Carnegie Supernova Project II. Observations of the luminous red nova AT 2014ej
Suntzeff, N. B.; Galbany, L.; Inserra, C. +29 more
We present optical and near-infrared broadband photometry and optical spectra of AT 2014ej from the Carnegie Supernova Project-II. These observations are complemented with data from the CHilean Automatic Supernova sEarch, the Public ESO Spectroscopic Survey of Transient Objects, and from the Backyard Observatory Supernova Search. Observational sig…
The Lyman Alpha Reference Sample. XI. Efficient turbulence-driven Lyα escape and an analysis of IR, CO, and [C II]158 µm
Östlin, G.; Hayes, M.; Kunth, D. +8 more
Context. Lyman-α (Lyα) is the brightest emission line in star-forming galaxies. However, its interpretation in terms of physical properties is hampered by the resonant nature of Lyα photons. In order to remedy this complicated situation, the Lyman Alpha Reference Sample (LARS) was defined, enabling the study of Lyα production and escape mechanisms…
The halo of M 105 and its group environment as traced by planetary nebula populations. I. Wide-field photometric survey of planetary nebulae in the Leo I group
Freeman, K. C.; Gerhard, O.; Coccato, L. +6 more
Context. M 105 (NGC 3379) is an early-type galaxy in the Leo I group. The Leo I group is the nearest group that contains all main galaxy types and can thus be used as a benchmark to study the properties of the intra-group light (IGL) in low-mass groups.
Aims: We present a photometric survey of planetary nebulae (PNe) in the extended halo of t…
Hot WHIM counterparts of FUV O VI absorbers: Evidence in the line-of-sight towards quasar 3C 273
Kaastra, Jelle; Finoguenov, Alexis; Schaye, Joop +7 more
Aims: We explore the high spectral resolution X-ray data towards the quasar 3C 273 to search for signals of hot (∼106-7 K) X-ray-absorbing gas co-located with two established intergalactic far-ultraviolet (FUV) O VI absorbers.
Methods: We analyze the soft X-ray band grating data of all XMM-Newton and Chandra instruments to sea…
The catalogue of cometary orbits and their dynamical evolution
Dybczyński, Piotr A.; Królikowska, Małgorzata
We present the CODE catalogue, the new cometary catalogue containing data for almost 300 long-period comets that were discovered before 2018. This is the first catalogue containing cometary orbits in the five stages of their dynamical evolution and covering three successive passages through the perihelion, with the exception of the hyperbolic come…
Bright Lyman-α emitters among Spitzer SMUVS galaxies in the MUSE/COSMOS field
Caminha, G. B.; Caputi, K. I.; Rosani, G. +1 more
We search for the presence of bright Lyα emitters among Spitzer SMUVS galaxies at z > 2.9 making use of homogeneous MUSE spectroscopic data. Although these data only cover a small region of COSMOS, MUSE has the unique advantage of providing spectral information over the entire field, without the need of target pre-selection. This results in an …
A high-precision abundance analysis of the nuclear benchmark star HD 20
Grebel, Eva K.; Hanke, Michael; Hansen, Camilla Juul +4 more
Metal-poor stars with detailed information available about their chemical inventory pose powerful empirical benchmarks for nuclear astrophysics. Here we present our spectroscopic chemical abundance investigation of the metal-poor ([Fe/H] = -1.60 ± 0.03 dex), r-process-enriched ([Eu/Fe] = 0.73 ± 0.10 dex) halo star
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). VII. Bridging the cluster-ICM-galaxy evolution at small scales
Andreani, P.; Ferrarese, L.; Buat, V. +20 more
Aims: We measure far-infrared (FIR) emission from tails of stripped dust following the ionised and atomic gas components in galaxies undergoing ram pressure stripping. We study the dust-to-gas relative distribution and mass ratio in the stripped interstellar medium and relate them to those of the intra-cluster medium (ICM), thus linking the c…
A dynamical and radiation semi-analytical model of pulsar-star colliding winds along the orbit: Application to LS 5039
Molina, E.; Bosch-Ramon, V.
Context. Gamma-ray binaries are systems that emit nonthermal radiation peaking at energies above 1 MeV. One proposed scenario to explain their emission consists of a pulsar orbiting a massive star, with particle acceleration taking place in shocks produced by the interaction of the stellar and pulsar winds.
Aims: We develop a semi-analytical …
Broadband transmission spectroscopy of HD 209458b with ESPRESSO: evidence for Na, TiO, or both
Bouchy, F.; Rebolo, R.; Pallé, E. +42 more
Context. The detection and characterization of exoplanet atmospheres is currently one of the main drivers pushing the development of new observing facilities. In this context, high-resolution spectrographs are proving their potential and showing that high-resolution spectroscopy will be paramount in this field.
Aims: We aim to make use of ESP…