Search Publications
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…
Highly variable AGN from the XMM-Newton slew survey
Read, A. M.; Esquej, P.; Miniutti, G. +4 more
Aims: We investigate the properties of a variability-selected complete sample of active galactic nuclei (AGN) in order to identify the mechanisms which cause large amplitude X-ray variability on timescales of years.
Methods: A complete sample of 24 sources was constructed, from AGN which changed their soft X-ray luminosity by more than o…
Astrometry with MCAO: HST-GeMS proper motions in the globular cluster NGC 6681
Massari, D.; Stetson, P. B.; Bono, G. +7 more
Aims: For the first time the astrometric capabilities of the Gemini Multi-Conjugate Adaptive Optics System (GeMS) facility at the Gemini South Adaptive Optics Imager (GSAOI) camera on Gemini-South are tested to quantify the accuracy in determining stellar proper motions in the Galactic globular cluster NGC 6681.
Methods: Proper motions f…
On the distance to the North Polar Spur and the local CO-H2 factor
Casandjian, J. M.; Kuntz, K. D.; Lallement, R. +4 more
Aims: Most models identify the X-ray bright North Polar Spur (NPS) with a hot interstellar (IS) bubble in the Sco-Cen star-forming region at ≃130 pc. An opposite view considers the NPS as a distant structure associated with Galactic nuclear outflows. Constraints on the NPS distance can be obtained by comparing the foreground IS gas column inf…