Search Publications
Transiting exoplanets from the CoRoT space mission. XXVI. CoRoT-24: a transiting multiplanet system
Mazeh, T.; Aigrain, S.; Alonso, R. +48 more
We present the discovery of a candidate multiply transiting system, the first one found in the CoRoT mission. Two transit-like features with periods of 5.11 and 11.76 d are detected in the CoRoT light curve around a main sequence K1V star of r = 15.1. If the features are due to transiting planets around the same star, these would correspond to obj…
Multiwavelength study of the high-latitude cloud L1642: chain of star formation
Juvela, M.; McGehee, P.; Ristorcelli, I. +16 more
Context. L1642 is one of the two high galactic latitude (|b| > 30°) clouds confirmed to have active star formation.
Aims: We examine the properties of this cloud, especially the large-scale structure, dust properties, and compact sources at different stages of star formation.
Methods: We present high-resolution far-infrared and submil…
Herschel spectral mapping of the Helix nebula (NGC 7293). Extended CO photodissociation and OH+ emission
Barlow, M. J.; Pearson, C.; Cernicharo, J. +13 more
Context. The Helix nebula (NGC 7293) is our closest planetary nebulae. Therefore, it is an ideal template for photochemical studies at small spatial scales in planetary nebulae.
Aims: We aim to study the spatial distribution of the atomic and the molecular gas, and the structure of the photodissociation region along the western rims of the He…
Potential multi-component structure of the debris disk around HIP 17439 revealed by Herschel/DUNES
Krivov, A. V.; Eiroa, C.; Löhne, T. +16 more
Context. The dust observed in debris disks is produced through collisions of larger bodies left over from the planet/planetesimal formation process. Spatially resolving these disks permits to constrain their architecture and thus that of the underlying planetary/planetesimal system.
Aims: Our Herschel open time key program DUNES aims at detec…
A Herschel view of IC 1396 A: Unveiling the different sequences of star formation
Henning, Thomas; Currie, Thayne; Rivière-Marichalar, Pablo +5 more
Context. The IC 1396 A globule, located to the west of the young cluster Tr 37, is known to host many very young stars and protostars, and is also assumed to be a site of triggered star formation.
Aims: Our aim is to test the triggering mechanisms and sequences leading to star formation in Tr 37 and similar regions.
Methods: We mapped IC…
The white dwarf cooling sequence of 47 Tucanae
Althaus, Leandro G.; Torres, Santiago; Miller Bertolami, Marcelo M. +1 more
Context. 47 Tucanae is one of the most interesting, well-observed, and theoretically studied globular clusters. This allows us to determine the reliability of our understanding of white dwarf cooling sequences, to compare different methods of determining its age, and to assess other important characteristics, such as its star formation history.
Cassini ISS mutual event astrometry of the mid-sized Saturnian satellites 2005-2012
Cooper, N. J.; Lainey, V.; Murray, C. D. +3 more
Aims: We present astrometric observations of the Saturnian satellites Mimas, Enceladus, Tethys, Dione, and Rhea from Cassini Imaging Science Subsystem (ISS) narrow-angle camera (NAC) images. Image sequences were designed to observe mutual occultations between these satellites.
Methods: The positions of satellite centres were estimated by…
Kinematics of the ionized-to-neutral interfaces in Monoceros R2
Ossenkopf, V.; Cernicharo, J.; Gerin, M. +10 more
Context. Monoceros R2 (Mon R2), at a distance of 830 pc, is the only ultra-compact H ii region (UC H ii) where its associated photon-dominated region (PDR) can be resolved with the Herschel Space Observatory.
Aims: Our aim is to investigate observationally the kinematical patterns in the interface regions (i.e., the transition from atomic to …
Investigating the hard X-ray emission from the hottest Abell cluster A2163 with Suzaku
Pratt, G. W.; Reiprich, T. H.; Ota, N. +3 more
Context. We present the results from Suzaku of the hottest Abell galaxy cluster
Aims: To study the physics of gas heating in cluster mergers, we investigated hard X-ray emission from the merging cluster
Methods: We analyzed ha…
Simultaneous XMM-Newton and HST-COS observation of 1H 0419-577. II. Broadband spectral modeling of a variable Seyfert galaxy
Kaastra, J. S.; Costantini, E.; Ebrero, J. +3 more
In this paper, we present the longest exposed (97 ks) XMM-Newton EPIC-pn spectrum ever obtained for the Seyfert 1.5 galaxy1H 0419-577. With the aim of explaining the broadband emission of this source, we took advantage of the simultaneous coverage in the optical/UV that was provided in the present case by the XMM-Newton Optical Monitor and by a HS…