Search Publications
Investigating the driving mechanisms of coronal mass ejections
Gallagher, P. T.; Lin, C. -H.; Raftery, C. L.
Aims: The objective of this study was to examine the kinematics of coronal mass ejections (CMEs) using EUV and coronagraph images, and to make a quantitative comparison with a number of theoretical models. One particular aim was to investigate the acceleration profile of CMEs in the low corona.
Methods: We selected two CME events for thi…
A survey of T Tauri stars with AKARI towards the Taurus-Auriga region
Oyabu, S.; Ita, Y.; Ishihara, D. +4 more
Context. The first Japanese infrared astronomical satellite, AKARI, has completed an All-Sky Survey at mid- to far-infrared wavelengths with higher spatial resolutions and sensitivities than the previous survey with Infrared Astronomical Satellite (IRAS).
Aims: We search for new T Tauri star (TTS) candidates with the mid-infrared (MIR) part o…
Herschel-SPIRE spectroscopy of the DR21 molecular cloud core
Miville-Deschênes, M. -A.; Boulanger, F.; Abergel, A. +47 more
We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 µm, using the Herschel-SPIRE spectrometer. Nineteen molecular lines originating from CO, 13CO, HCO+ and H2O, plus lines of [N ii] and [CI] were recorded, including several transitions not previously detected. The CO …
A search for supernova remnants in the nearby spiral galaxy M 74 (NGC 628)
Balman, Ş.; Özel, M. E.; Sonbaş, E. +1 more
An optical search was carried out for supernova remnants (SNRs) in the Sc type nearby spiral galaxy M 74, using ground-based observations at the TUBITAK National Observatory (TUG, Antalya/Turkey) and the Special Astrophysics Observatory (SAO, Russia). Observations were supplemented by the spectral analysis of archived X-ray data from XMM-Newton an…
2MASS J03105986 +1648155 AB - a new binary at the L/T transition
Bouy, H.; Henning, Th.; Brandner, W. +2 more
Context. The transition from the L to the T spectral type of brown dwarfs is marked by a very rapid transition phase, remarkable brightening in the J-band, and higher binary frequency. Despite being an active area of inquiry, this transition region still remains one of the most poorly understood phases of brown dwarf evolution.
Aims: We resol…
Ultraluminous X-ray sources out to z ~ 0.3 in the COSMOS field
Finoguenov, A.; Kneib, J. -P.; Ilbert, O. +59 more
Context. Using Chandra observations we identified a sample of seven off-nuclear X-ray sources in the redshift range z = 0.072-0.283, located within optically bright galaxies in the COSMOS Survey. All of them, if associated with their closest bright galaxy, would have L[0.5-7 keV] > 1039 erg s-1 and therefore can be classif…
Brightness map of the zodiacal emission from the AKARI IRC All-Sky Survey
Usui, F.; Ishihara, D.; Ishiguro, M. +6 more
The first Japanese infrared space mission AKARI successfully scanned the whole sky with its two main instruments, the Infrared Camera (IRC) and the Far-Infrared Surveyor (FIS). The AKARI All-Sky Survey provides us with an invaluable opportunity to examine the zodiacal emission (ZE) over the entire sky in the leading as well as the trailing directi…
Herschel/HIFI spectroscopy of the intermediate mass protostar NGC 7129 FIRS 2
de Graauw, Th.; Liseau, R.; Braine, J. +58 more
Herschel/HIFI observations of water from the intermediate mass protostar NGC 7129 FIRS 2 provide a powerful diagnostic of the physical conditions in this star formation environment. Six spectral settings, covering four H216O and two H218O lines, were observed and all but one H218O l…
Radio counterpart of the lensed submm emission in the cluster MS0451.6-0305: new evidence for the merger scenario
Koopmans, L. V. E.; Garrett, M. A.; Limousin, M. +2 more
Context. SMM J04542-0301 is an extended ( 1 arcmin) submm source located near the core of the cluster MS0451.6-0305. It has been suggested that part of its emission arises from the interaction between a LBG and two EROs at z 2.9 that are multiply-imaged in the optical/NIR observations. However, the dramatic resolution difference between the sub-mm…
XMM-Newton unveils the complex iron Kα region of Mrk 279
Kaastra, J. S.; Arav, N.; Costantini, E. +4 more
We present the results of a ~160 ks-long XMM-Newton observation of the Seyfert 1 galaxy