Search Publications
Spectral and spatial imaging of the Be+sdO binary ϕ Persei
Berio, P.; Meilland, A.; Millour, F. +25 more
Aims: The rapidly rotating Be star
The Seven Sisters DANCe. I. Empirical isochrones, luminosity, and mass functions of the Pleiades cluster
Bertin, E.; Bouy, H.; Sarro, L. M. +7 more
Context. The DANCe survey provides photometric and astrometric (position and proper motion) measurements for approximately 2 million unique sources in a region encompassing ~80 deg2 centered on the Pleiades cluster.
Aims: We aim at deriving a complete census of the Pleiades and measure the mass and luminosity functions of the clust…
Pressure distribution of the high-redshift cluster of galaxies CL J1226.9+3332 with NIKA
Adam, R.; Benoît, A.; Catalano, A. +37 more
The thermal Sunyaev-Zel'dovich (tSZ) effect is expected to provide a low scatter mass proxy for galaxy clusters since it is directly proportional to the cluster thermal energy. The tSZ observations have proven to be a powerful tool for detecting and studying them, but high angular resolution observations are now needed to push their investigation …
Composition-dependent outgassing of comet 67P/Churyumov-Gerasimenko from ROSINA/DFMS. Implications for nucleus heterogeneity?
Wurz, P.; Altwegg, K.; Balsiger, H. +15 more
Context. Early measurements of Rosetta's target comet, 67P/Churyumov-Gerasimenko (67P), showed a strongly heterogeneous coma in H2O, CO, and CO2.
Aims: The purpose of this work is to further investigate the coma heterogeneity of 67P, and to provide predictions for the near-perihelion outgassing profile based on the propo…
Neutral carbon and CO in 76 (U)LIRGs and starburst galaxy centers. A method to determine molecular gas properties in luminous galaxies
van der Werf, P.; Israel, F. P.; Rosenberg, M. J. F.
In this paper we present fluxes in the [ CI ] lines of neutral carbon at the centers of some 76 galaxies with far-infrared luminosities ranging from 109 to 1012L⊙, as obtained with the Herschel Space Observatory and ground-based facilities, along with the line fluxes of the J = 7-6, J = 4-3, J = 2-112CO,…
Jet-induced star formation in 3C 285 and Minkowski's Object
Combes, F.; Salomé, P.; Salomé, Q.
How efficiently star formation proceeds in galaxies is still an open question. Recent studies suggest that active galactic nucleus (AGN) can regulate the gas accretion and thus slow down star formation (negative feedback). However, evidence of AGN positive feedback has also been observed in a few radio galaxies (e.g. Centaurus A, Minkowski's Objec…
67P/Churyumov-Gerasimenko: Activity between March and June 2014 as observed from Rosetta/OSIRIS
Jorda, L.; Lamy, P. L.; Bertaux, J. -L. +47 more
Aims: 67P/Churyumov-Gerasimenko is the target comet of the ESA's Rosetta mission. After commissioning at the end of March 2014, the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) onboard Rosetta, started imaging the comet and its dust environment to investigate how they change and evolve while approaching the Sun.
Me…
Geomorphology of the Imhotep region on comet 67P/Churyumov-Gerasimenko from OSIRIS observations
Jorda, L.; Lamy, P. L.; Lara, L. M. +48 more
Context. Since August 2014, the OSIRIS Narrow Angle Camera (NAC) onboard the Rosetta spacecraft has acquired high spatial resolution images of the nucleus of comet 67P/Churyumov-Gerasimenko, down to the decimeter scale. This paper focuses on the Imhotep region, located on the largest lobe of the nucleus, near the equator.
Aims: We map, invent…
Detecting stars, galaxies, and asteroids with Gaia
de Bruijne, J. H. J.; Hestroffer, D.; Krone-Martins, A. +3 more
Context. Gaia is Europe's space astrometry mission, aiming to make a three-dimensional map of 1000 million stars in our Milky Way to unravel its kinematical, dynamical, and chemical structure and evolution.
Aims: We present a study of Gaia's detection capability of objects, in particular non-saturated stars, double stars, unresolved external …
IRIS observations of the Mg ii h and k lines during a solar flare
Fletcher, L.; Qiu, J.; Simões, P. J. A. +1 more
The bulk of the radiative output of a solar flare is emitted from the chromosphere, which produces enhancements in the optical and UV continuum, and in many lines, both optically thick and thin. We have, until very recently, lacked observations of two of the strongest of these lines: the Mg ii h and k resonance lines. We present a detailed study o…