Search Publications
The BLAST 250 µm-selected galaxy population in GOODS-South
Smail, I.; Ivison, R. J.; Ade, P. A. R. +33 more
We identify and investigate the nature of the 20 brightest 250µm sources detected by the Balloon-borne Large Aperture Submillimetre Telescope (BLAST) within the central 150arcmin2 of the Great Observatories Origins Deep Survey (GOODS)-South field. Aided by the available deep VLA 1.4GHz radio imaging, reaching S1.4 ~= 40…
X-ray emission from the extended emission-line region of the powerful radio galaxy 3C171
Hardcastle, M. J.; Massaro, F.; Harris, D. E.
We present Chandra X-ray observations of the powerful radio galaxy 3C171, which reveal an extended region of X-ray emission spatially associated with the well-known 10-kpc scale optical emission-line region around the radio jets. We argue that the X-ray emission comes from collisionally ionized material, originally cold gas that has been shock hea…
Deep Herschel view of obscured star formation in the Bullet cluster
Smail, I.; Kneib, J. -P.; Smith, G. P. +33 more
We use deep, five band (100-500 µm) data from the Herschel Lensing Survey (HLS) to fully constrain the obscured star formation rate, SFRFIR, of galaxies in the Bullet cluster (z = 0.296), and a smaller background system (z = 0.35) in the same field. Herschel detects 23 Bullet cluster members with a total SFRFIR = 144±14…
Correlations between cloud thickness and sub-cloud water abundance on Venus
Drossart, Pierre; Irwin, Patrick G. J.; Piccioni, Giuseppe +6 more
Past spacecraft observations of Venus have found considerable spatial and temporal variations of water vapour abundance above the clouds. Previous searches for variability below the clouds at 30-45 km altitude found no large scale latitudinal gradients, but lacked the spatial resolution to detect smaller scale variations. Here we interpret results…
The Cas A-like SNR 1E 0102.2-7219 in the Small Magellanic Cloud: An Asymmetric Bipolar Explosion
Dopita, Michael A.; Vogt, Frédéric
We have used the Wide Field Spectrograph on the 2.3 m telescope at Siding Spring Observatory to map the [O III] λ5007 dynamics of the young oxygen-rich supernova remnant 1E 0102.2-7219 in the Small Magellanic Cloud. From the resultant data cube, we have been able to reconstruct the full three-dimensional structure of the system of [O III] filament…
VERA observations of SiO maser emission from R Aquarii
Bujarrabal, V.; Hirota, T.; Sato, K. +9 more
Aims: We aim to study the spatial distribution of the v=1 and v=2J = 1-0 SiO maser emission from R Aqr, a well known stellar symbiotic system. In particular, we intend to determine the annual parallax and proper motion of the source by means of measurements of the absolute coordinates of the maser spots.
Methods: We performed VLBI observ…
A Rising Cool Column as a Signature of Helical Flux Emergence and Formation of Prominence and Coronal Cavity
Tsuneta, Saku; Okamoto, Takenori J.; Berger, Thomas E.
Continuous observations were performed of a quiescent prominence with the Solar Optical Telescope on board the Hinode satellite on 2006 December 23 and 24. A peculiar slowly rising column of ~104 K plasma develops from the lower atmosphere during the observations. The apparent ascent speed of the column is 2 km s-1, while the…
The Architecture of the Cassini Division
Sotin, C.; Brown, R. H.; Baines, K. H. +6 more
The Cassini Division in Saturn's rings contains a series of eight named gaps, three of which contain dense ringlets. Observations of stellar occultations by the Visual and Infrared Mapping Spectrometer onboard the Cassini spacecraft have yielded ~40 accurate and precise measurements of the radial position of the edges of all of these gaps and ring…
The chemical composition of TS 01, the most oxygen-deficient planetary nebula. AGB nucleosynthesis in a metal-poor binary star
Rauch, T.; Morisset, C.; Simón-Díaz, S. +10 more
The planetary nebula TS 01 (also called PN G 135.9+55.9 or SBS 1150+599A) with its record-holding low oxygen abundance and its double degenerate close binary core (period 3.9 h) is an exceptional object located in the Galactic halo. We have secured observational data in a complete wavelength range to pin down the abundances of half a dozen element…
The EUV spectrum of the Sun: long-term variations in the SOHO CDS NIS spectral responsivities
Andretta, V.; Del Zanna, G.; Thompson, W. T. +2 more
We present SOHO Coronal Diagnostic Spectrometer (CDS) normal incidence, extreme-ultraviolet spectra of the Sun taken from the beginning of the mission in 1996 until now. We use various methods to study the performance of the instrument during such a long time span. Assuming that the basal chromospheric-transition region emission in the quiet parts…