Search Publications
Radial velocities of K-M dwarfs and local stellar kinematics
Sperauskas, J.; Bartašiūtė, S.; Deveikis, V. +3 more
Aims: The goal of this paper is to present complete radial-velocity data for the spectroscopically selected McCormick sample of nearby K-M dwarfs and, based on these and supplementary data, to determine the space-velocity distributions of late-type stars in the solar neighborhood.
Methods: We analyzed nearly 3300 measurements of radial v…
Relation between trees of fragmenting granules and supergranulation evolution
Roudier, Th.; Malherbe, J. M.; Rieutord, M. +1 more
Context. The determination of the underlying mechanisms of the magnetic elements diffusion over the solar surface is still a challenge. Understanding the formation and evolution of the solar network (NE) is a challenge, because it provides a magnetic flux over the solar surface comparable to the flux of active regions at solar maximum.
Aims: …
Herschel-PACS observations of far-IR lines in young stellar objects. I. [OI] and H2O at 63 µm
Kamp, I.; Eiroa, C.; Montesinos, B. +2 more
Context. Gas plays a major role in the dynamical evolution of young stellar objects (YSOs). Its interaction with the dust is the key to our understanding planet formation later on in the protoplanetary disc stage. Studying the gas content is therefore a crucial step towards understanding YSO and planet formation. Such a study can be made through s…
Planck intermediate results. XXXIV. The magnetic field structure in the Rosette Nebula
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +197 more
Planck has mapped the polarized dust emission over the whole sky, making it possible to trace the Galactic magnetic field structure that pervades the interstellar medium (ISM). We combine polarization data from Planck with rotation measure (RM) observations towards a massive star-forming region, the Rosette Nebula in the Monoceros molecular cloud,…
Can giant radio halos probe the merging rate of galaxy clusters?
Brunetti, G.; Cassano, R.; Ettori, S. +1 more
Observations of galaxy clusters both in the radio and X-ray bands probe a direct link between cluster mergers and giant radio halos, suggesting that these sources can be used as probes of the cluster merging rate with cosmic time. While all giant radio halos are found in merging clusters, not every merging cluster hosts a giant radio halo. In this…
Study of the reflection spectrum of the LMXB 4U 1702-429
Sanna, A.; Papitto, A.; Di Salvo, T. +7 more
Context. The source
Deuterated polycyclic aromatic hydrocarbons: Revisited
Tielens, A. G. G. M.; Mori, T.; Onaka, T. +2 more
Aims: The amount of deuterium locked up in polycyclic aromatic hydrocarbons (PAHs) has to date been an uncertain value. We present a near-infrared (NIR) spectroscopic survey of Hii regions in the Milky Way, Large Magellanic Cloud, and Small Magellanic Cloud obtained with AKARI, which aims to search for features indicative of deuterated PAHs (…
VLT/ISAAC infrared spectroscopy of embedded high-mass YSOs in the Large Magellanic Cloud: Methanol and the 3.47 µm band
Boulanger, F.; Onaka, T.; Dartois, E. +1 more
Aims: This study aims to elucidate a possible link between chemical properties of ices in star-forming regions and environmental characteristics (particularly metallicity) of the host galaxy. The Large Magellanic Cloud (LMC) is an excellent target to study properties of interstellar and circumstellar medium in a different galactic environment…
Characterization of the Abydos region through OSIRIS high-resolution images in support of CIVA measurements
Bibring, J. -P.; Poulet, F.; Jorda, L. +45 more
Context. On 12 November 2014, the European mission Rosetta delivered the Philae lander on the nucleus of comet 67P/Churyumov-Gerasimenko (67P). After the first touchdown, the lander bounced three times before finally landing at a site named Abydos.
Aims: We provide a morphologically detailed analysis of the Abydos landing site to support Phil…
Low-frequency waves at comet 67P/Churyumov-Gerasimenko. Observations compared to numerical simulations
Goetz, C.; Richter, I.; Glassmeier, K. H. +3 more
Context. A new type of low-frequency wave was detected by the magnetometer of the Rosetta Plasma Consortium at the comet during the initial months after the arrival of the Rosetta spacecraft at comet 67P/Churyumov-Gerasimenko. This large-amplitude, nearly continuous wave activity is observed in the frequency range from 30 mHz to 80 mHz where 40 mH…