Search Publications
X-Ray and Optical Observations of A 0535+26
Guiriec, S.; Coe, M. J.; McBride, V. A. +13 more
We present recent contemporaneous X-ray and optical observations of the Be/X-ray binary system A 0535+26 with the Fermi/Gamma-ray Burst Monitor (GBM) and several ground-based observatories. These new observations are put into the context of the rich historical data (since ~1978) and discussed in terms of the neutron-star-Be-disk interaction. The B…
Cool and warm dust emission from M 33 (HerM33es)
Boquien, M.; Braine, J.; Beck, R. +24 more
In the framework of the open-time key program "Herschel M 33 extended survey (HerM33es)", we study the far-infrared emission from the nearby spiral galaxy M 33 in order to investigate the physical properties of the dust such as its temperature and luminosity density across the galaxy. Taking advantage of the unique wavelength coverage (100, 160, 2…
VLT-SINFONI integral field spectroscopy of low-z luminous and ultraluminous infrared galaxies. I. Atlas of the 2D gas structure
Colina, L.; Arribas, S.; Alonso-Herrero, A. +2 more
We present an atlas of a sample of local (z < 0.1) LIRGs (10) and ULIRGs (7) covering the luminosity range log(LIR/L⊙) = 11.1-12.4. The atlas is based on near-infrared H (1.45-1.85 µm) and K-band (1.95-2.45 µm) VLT-SINFONI integral field spectroscopy (IFS). The atlas presents the ionised, partially ionised, and…
On the Link between Associated Mg II Absorbers and Star Formation in Quasar Hosts
Shen, Yue; Ménard, Brice
A few percent of quasars show strong associated Mg II absorption, with velocities (v off) lying within a few thousand km s-1 from the quasar systemic redshift. These associated absorption line (AAL) systems are usually interpreted as absorbers that are either intrinsic to the quasar and its host, or arising from external gala…
The M 16 molecular complex under the influence of NGC 6611. Herschel's perspective of the heating effect on the Eagle Nebula
Hill, T.; White, G. J.; Roussel, H. +25 more
We present Herschel images from the HOBYS key program of the Eagle Nebula (M 16) in the far-infrared and sub-millimetre, using the PACS and SPIRE cameras at 70 µm, 160 µm, 250 µm, 350 µm, 500 µm. M 16, home to the Pillars of Creation, is largely under the influence of the nearby NGC 6611 high-mass star cluster. The He…
The VMC survey. III. Mass-loss rates and luminosities of LMC AGB stars
van Loon, J. Th.; Gullieuszik, M.; Girardi, L. +7 more
Context. Asymptotic giant branch (AGB) stars are major contributors to both the chemical enrichment of the interstellar medium and the integrated light of galaxies. Despite its importance, the AGB is one of the least understood phases of stellar evolution. The main difficulties associated with detailed modelling of the AGB are related to the mass-…
Suzaku Observation of the Black Hole Candidate Maxi J1836-194 in a Hard/Intermediate Spectral State
Fabian, A. C.; Miller, J. M.; Reis, R. C. +2 more
We report on a Suzaku observation of the newly discovered X-ray binary MAXI J1836-194. The source is found to be in the hard/intermediate spectral state and displays a clear and strong relativistically broadened iron emission line. We fit the spectra with a variety of phenomenological, as well as physically motivated disk reflection models, and fi…
XMM-Newton observations of SNR 1987A. II. The still increasing X-ray light curve and the properties of Fe K lines
Haberl, F.; Sturm, R.; Maggi, P. +1 more
Aims: We report on the recent observations of the supernova remnant
Methods: We analysed all X…
The 2.35 year itch of Cygnus OB2 #9. I. Optical and X-ray monitoring
Absil, O.; Damerdji, Y.; Blomme, R. +5 more
Context. Nonthermal radio emission in massive stars is expected to arise in wind-wind collisions occurring inside a binary system. One such case, the O-type star Cyg OB2 #9, was proven to be a binary only four years ago, but the orbital parameters remained uncertain. The periastron passage of 2011 was the first one to be observable under good cond…
High-contrast Near-infrared Polarization Imaging of MWC480
Kuzuhara, M.; Tamura, M.; Ishii, M. +52 more
One of the key predictions of modeling from the IR excess of Herbig Ae stars is that for protoplanetary disks, where significant grain growth and settling has occurred, the dust disk has flattened to the point that it can be partially or largely shadowed by the innermost material at or near the dust sublimation radius. When the self-shadowing has …