Search Publications
The Nature of Blue Cores in Spheroids: A Possible Connection with Active Galactic Nuclei and Star Formation
Illingworth, Garth D.; Frye, Brenda; Infante, Leopoldo +9 more
We investigate the physical nature of blue cores in early-type galaxies through the first multiwavelength analysis of a serendipitously discovered field blue-nucleated spheroid in the background of the deep Hubble Space Telescope ACS/WFC griz multicolor observations of the cluster A1689. The resolved g-r, r-i, and i-z color maps reveal a prominent…
Properties of FIRBACK-ELAIS 175-µm sources in the ELAIS N2 region
Dole, H.; Lagache, G.; Puget, J. -L. +15 more
We report on a search for the optical counterparts of 175-µm selected sources from the Far-Infrared Background (FIRBACK) survey in the European Large Area ISO Survey (ELAIS) N2 field. Applying a likelihood ratio technique to optical catalogues from the Isaac Newton Telescope - Wide Field Survey (INT-WFS), we found optical identifications for…
Bifurcated current sheet: model and Cluster observations
Sauvaud, J. -A.; Balogh, A.; Génot, V. +3 more
Cluster observations have recently confirmed previous ISEE and Geotail observations showing that the magnetotail current sheet can present a bifurcated structure with two off-centre current peaks. We show in this paper that such a structure can be described by a kinetic tangential equilibrium which is an exact solution of the Vlasov-Maxwell equati…
Discovery of absorption features of the accretion disc corona and systematic acceleration of the X-ray burst rate in XB1323-619
Church, M. J.; Reed, D.; Dotani, T. +2 more
We present results from analysis of the observation of the dipping, quasi-periodic bursting low mass X-ray binary XB1323-619 made with XMM-Newton in 2003 January. In spectral analysis of the non-dip, non-burst EPIC PN spectrum, a number of absorption lines were discovered, notably at 6.70 and 6.98 keV, which we identify with scattering by high ion…
Discovery of Strong Lensing by an Elliptical Galaxy at z = 0.0345
Tonry, John; Blakeslee, John P.; Lucey, John R. +1 more
We have discovered strong gravitational lensing by the galaxy ESO 325-G004, in images obtained with the Advanced Camera for Surveys on the Hubble Space Telescope. The lens galaxy is a boxy group-dominant elliptical at z=0.0345, making this the closest known galaxy-scale lensing system. The lensed object is very blue (B-IC~1.1), and form…
The European Large Area ISO Survey: optical identifications of 15-µm and 1.4-GHz sources in N1 and N2
Vaccari, M.; Serjeant, S.; Rowan-Robinson, M. +9 more
We present the multiwavelength properties and catalogue of the 15µm and 1.4GHz radio sources detected in the European Large Area ISO Survey (ELAIS) areas N1 and N2. Using the optical data from the Wide Field Survey we use a likelihood ratio method to search for the counterparts of the 1056 and 691 sources detected at 15µm and 1.4GHz, r…
VLA Observations of ζ Aurigae: Confirmation of the Slow Acceleration Wind Density Structure
Harper, Graham M.; Bennett, Philip D.; Brown, Alexander +3 more
Studies of the winds from single K and early M evolved stars indicate that these flows typically reach a significant fraction of their terminal velocity within the first couple of stellar radii. The most detailed spatially resolved information of the extended atmospheres of these spectral types comes from the ζ Aur eclipsing binaries. However, the…
All Coronal Loops Are the Same: Evidence to the Contrary
Schmelz, J. T.; Beene, J. E.; Nasraoui, K. +3 more
The 1998 April 20 spectral line data from the Coronal Diagnostic Spectrometer on the Solar and Heliospheric Observatory show a coronal loop on the solar limb. Our original analysis of these data showed that the plasma was multithermal, both along the length of the loop and along the line of sight. However, more recent results by other authors indi…
Magnetosheath variations during the storm main phase on 20 November 2003: Evidence for solar wind density control of energy transfer to the magnetosphere
Ebihara, Y.; Kataoka, R.; Sibeck, D. G. +4 more
Energy transfer from the solar wind into the magnetosphere and ionosphere is controlled by the southward magnetic field in the magnetosheath which under normal high Mach number conditions is about four times the solar wind southward field. In a low Mach number regime, however, the magnetosheath compression is diminished by a low solar wind density…
A Fresh View of Henize 2-10 with VLT NAOS-CONICA
Cabanac, Rémi A.; Vanzi, Leonardo; Sauvage, Marc
We present high-resolution observations of Henize 2-10 in Ks (2.2 µm), L' (3.8 µm), and M' (4.8 µm) bands. These allow us, for the first time, to track accurately the structures at the heart of the galaxy from the optical to the radio. All radio knots previously observed can now be associated with L'- and Ks…