Search Publications
DUst around NEarby Stars. The survey observational results
Heras, A. M.; Fridlund, M.; Olofsson, G. +47 more
Context. Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system counterparts are the asteroid and Edgeworth-Kuiper belts.
Aims: The DUNES survey aims at detecting extra-solar analogues to the Edgeworth-Kuiper belt around solar-type stars, putting in this way t…
OGLE-2002-BLG-360: from a gravitational microlensing candidate to an overlooked red transient
Soszyński, I.; Udalski, A.; Szymański, M. K. +9 more
Context. OGLE-2002-BLG-360 was discovered as a microlensing candidate by the OGLE-III project. The subsequent light curve, however, clearly showed that the brightening of the object could not have resulted from the gravitational microlensing phenomenon.
Aims: We aim to explain the nature of OGLE-2002-BLG-360 and its eruption observed in 2002-…
Young stars in ɛ Chamaleontis and their disks: disk evolution in sparse associations
Henning, Th.; van Boekel, R.; Lawson, W. A. +3 more
Context. The nearby young stellar association ɛ Cha has an estimated age of 3-5 Myr, making it an ideal laboratory to study the disk dissipation process and provide empirical constraints on the timescale of planet formation.
Aims: We wish to complement existing optical and near-infrared data of the ɛ Cha association, which provide the stellar…
Gas and dust in the TW Hydrae association as seen by the Herschel Space Observatory
Pinte, C.; Duchêne, G.; Dent, W. R. F. +15 more
Context. Circumstellar discs are the places where planets form, therefore knowledge of their evolution is crucial for our understanding of planet formation. The Herschel Space Observatory is providing valuable data for studying disc systems, thanks to its sensitivity and wavelength coverage. This paper is one of several devoted to analysing and mo…
AKARI North Ecliptic Pole Deep Survey. Revision of the catalogue via a new image analysis
Małek, K.; Ohyama, Y.; Pearson, C. +10 more
Context. We present the revised near- to mid-infrared catalogue of the AKARI North Ecliptic Pole deep survey. The survey has the unique advantage of continuous filter coverage from 2 to 24 µm over nine photometric bands, but the initial version of the survey catalogue leaves room for improvement in the image analysis stage; the original imag…
High-pressure, low-abundance water in bipolar outflows. Results from a Herschel-WISH survey
Liseau, R.; van Dishoeck, E. F.; Bachiller, R. +6 more
Context. Water is a potential tracer of outflow activity because it is heavily depleted in cold ambient gas and is copiously produced in shocks.
Aims: We present a survey of the water emission in a sample of more than 20 outflows from low-mass young stellar objects with the goal of characterizing the physical and chemical conditions of the em…
Large-scale environments of binary AGB stars probed by Herschel. I. Morphology statistics and case studies of R Aquarii and W Aquilae
Blommaert, J. A. D. L.; Jorissen, A.; Ottensamer, R. +14 more
The Mass loss of Evolved StarS (MESS) sample offers a selection of 78 asymptotic giant branch (AGB) stars and red supergiants (RSGs) observed with the PACS photometer on-board Herschel at 70 µm and 160 µm. For most of these objects, the dusty AGB wind is not spherically symmetric and the wind shape can be subdivided into four classes. …
An interferometric study of the post-AGB binary 89 Herculis. I. Spatially resolving the continuum circumstellar environment at optical and near-IR wavelengths with the VLTI, NPOI, IOTA, PTI, and the CHARA Array
Chesneau, O.; Banerjee, D. P. K.; Verhoelst, T. +9 more
Context. Binary post-asymptotic giant branch (post-AGB) stars are interesting laboratories to study both the evolution of binaries as well as the structure of circumstellar disks.
Aims: A multiwavelength high angular resolution study of the prototypical object 89 Herculis is performed with the aim of identifying and locating the different emi…
Proper motions of young stars in Chamaeleon. I. A Virtual Observatory study of spectroscopically confirmed members
Bayo, A.; Solano, E.; Barrado, D. +3 more
Context. The study of the motion of the members of a given open cluster or stellar association provides key information about their formation and early evolution. The Chamaeleon cloud complex constitutes one of the closest and best studied low-mass star-forming regions in the Galaxy.
Aims: We want to provide further evidence of the origin of …
AKARI/IRC 18 µm survey of warm debris disks
Marshall, J. P.; White, G. J.; Nakagawa, T. +11 more
Context. Little is known about the properties of the warm (Tdust ≳ 150 K) debris disk material located close to the central star, which has a more direct link to the formation of terrestrial planets than does the low-temperature debris dust that has been detected to date.
Aims: To discover new warm debris disk candidates that show …