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From X-Ray Dips to Eclipse: Witnessing Disk Reformation in the Recurrent Nova U Sco
Talavera, A.; Ness, J. -U.; Hernanz, M. +9 more
The tenth recorded outburst of the recurrent eclipsing nova U Sco was observed simultaneously in X-ray, UV, and optical by XMM-Newton on days 22.9 and 34.9 after the outburst. Two full passages of the companion in front of the nova ejecta were observed, as was the reformation of the accretion disk. On day 22.9, we observed smooth eclipses in UV an…
Trajectories and Distribution of Interstellar Dust Grains in the Heliosphere
Slavin, Jonathan D.; Reach, William T.; Müller, Hans-Reinhard +4 more
The solar wind carves a bubble in the surrounding interstellar medium (ISM) known as the heliosphere. Charged interstellar dust grains (ISDG) encountering the heliosphere may be diverted around the heliopause or penetrate it depending on their charge-to-mass ratio. We present new calculations of trajectories of ISDG in the heliosphere, and the dus…
Constraints on mantle plumes on Venus: Implications for volatile history
Sotin, Christophe; Smrekar, Suzanne E.
The analysis of Venus' gravity field and topography suggests the presence of a small number of deep mantle plumes (∼9). This study predicts the number of plumes formed at the core-mantle boundary, their characteristics, and the production of partial melt from adiabatic decompression. Numerical simulations are performed using a 3D spherical code th…
Determination of binary asteroid orbits with a genetic-based algorithm
Berthier, J.; Marchis, F.; Vachier, F.
Aims: Over the past decade, discoveries of multiple and binary asteroid systems have played a significant role in our general understanding of small solar system bodies. Direct observations of satellites of asteroids are rare and difficult since they require the use of already over-subscribed facilities such as adaptive optics (AO) on large 8…
The dark GRB 080207 in an extremely red host and the implications for gamma-ray bursts in highly obscured environments
Cenko, S. B.; Bloom, J. S.; Watson, D. +9 more
We present comprehensive X-ray, optical, near- and mid-infrared and submm observations of GRB 080207 and its host galaxy. The afterglow was undetected in the optical and near-infrared (nIR) implying an X-ray-to-optical spectral slope less than 0.3, identifying GRB 080207 as a dark burst. Swift X-ray observations show extreme absorption in the host…
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…