Distances and peculiar velocities of spiral galaxies in the 2MFGC and SFI++ samplesWe compare infrared Tully-Fisher (TF) distances and peculiar velocities derived for spiral galaxies from the two largest datasets: the 2MASS selected Flat Galaxy Catalog, 2MFGC [19, 20] and the…Yu. N. Kudrya, V. E. Karachentseva, I. D. Karachentsev et al.·Nov 22, 2008SaveLearn
Chandra observations of the galaxy group AWM 5: cool core re-heating and thermal conduction suppressionWe present an analysis of a 40 ksec Chandra observation of the galaxy group AWM 5. It has a small (8 kpc) dense cool core with a temperature of 1.2 keV and the temperature profile…A. Baldi, W. Forman, C. Jones et al.·Nov 22, 2008SaveLearn
Recovering the intrinsic shape of early-type galaxiesWe investigate how well the intrinsic shape of early-type galaxies can be recovered when both photometric and two-dimensional stellar kinematic observations are available. We simulate these…Remco C. E. van den Bosch, Glenn van de Ven·Nov 21, 2008SaveLearn
Large-scale cosmic flows and moving dark energyLarge-scale matter bulk flows with respect to the cosmic microwave background have very recently been detected on scales 100 Mpc/h and 300 Mpc/h by using two different techniques showing an excellent…Jose Beltran Jimenez, Antonio L. Maroto·Nov 21, 2008SaveLearn
Looking to the future: using IR interferometry to study microquasarsInfrared interferometry is currently in a rapid development phase, with new instrumentation soon achieving milliarcsecond spatial resolutions for faint sources and astrometry on the order of 10…Sera Markoff·Nov 21, 2008SaveLearn
Physical Properties of Four SZE-Selected Galaxy Clusters in the Southern Cosmology SurveyWe present the optical and X-ray properties of four clusters recently discovered by the South Pole Telescope (SPT) using the Sunyaev-Zel'dovich effect (SZE). The four clusters are located in one…Felipe Menanteau, John P. Hughes·Nov 21, 2008SaveLearn
Particle-acceleration timescales in TeV blazar flaresObservations of minute-scale flares in TeV Blazars place constraints on particle acceleration mechanisms in those objects. The implications for a variety of radiation mechanisms have been addressed…Joni Tammi, Peter Duffy·Nov 21, 2008SaveLearn
On the plasma temperature in supernova remnants with cosmic-ray modified shocksContext: Multiwavelength observations of supernova remnants can be explained within the framework of the diffusive shock acceleration theory, which allows effective conversion of the explosion energy…L. O'C. Drury, F. A. Aharonian, D. Malyshev et al.·Nov 21, 2008SaveLearn
The distribution of ejected subhalos and its implication for halo assembly biasUsing a high-resolution cosmological N-body simulation, we identify the ejected population of subhalos, which are halos at redshift z=0 but were once contained in more massive `host' halos at…Huiyuan Wang, H. J. Mo, Y. P. Jing·Nov 21, 2008SaveLearn
Sub-terahertz, microwaves and high energy emissions during the December 6, 2006 flare, at 18:40 UTThe presence of a solar burst spectral component with flux density increasing with frequency in the sub-terahertz range, spectrally separated from the well-known microwave spectral component, bring…Pierre Kaufmann, Gerard Trottet, C. Guillermo Gimenez de Castro et al.·Nov 21, 2008SaveLearn
The outer regions of galaxy clusters: Chandra constraints on the X-ray surface brightness(Abridged version) We study the properties of the X-ray surface brightness profiles in a sample of galaxy clusters that were observed with Chandra and have emission detectable with a signal-to-noise…S. Ettori, I. Balestra·Nov 21, 2008SaveLearn
Protostellar fountains do shape the regional core mass function?Paper withdrawn, sorry for any inconvenience raised!J. Z. Li, M. D. Smith, M. Huang et al.·Nov 21, 2008SaveLearn
Gravitational-wave memory revisited: memory from the merger and recoil of binary black holesGravitational-wave memory refers to the permanent displacement of the test masses in an idealized (freely-falling) gravitational-wave interferometer. Inspiraling binaries produce a particularly…Marc Favata·Nov 21, 2008SaveLearn
A Universal Magnification Theorem for Higher-Order Caustic SingularitiesWe prove that, independent of the choice of a lens model, the total signed magnification always sums to zero for a source anywhere in the four-image regions of swallowtail, elliptic umbilic, and…Amir B. Aazami, Arlie O. Petters·Nov 21, 2008SaveLearn
Internal space structure generalization of the quintom cosmological scenarioWe introduce the Lagrangian for a multi-scalar field configuration in a N-dimensional internal space endowed with a constant metric Qik and generalize the quintom cosmological scenario. We…Luis P. Chimento, Mónica Forte, Ruth Lazkoz et al.·Nov 21, 2008SaveLearn
Characterising the Gravitational Instability in Cooling Accretion DiscsWe perform numerical analyses of the structure induced by gravitational instabilities in cooling gaseous accretion discs. For low enough cooling rates a quasi-steady configuration is reached, with…Peter Cossins, Giuseppe Lodato, Cathie Clarke·Nov 21, 2008SaveLearn
Dust Processing and Grain Growth in Protoplanetary Disks in the Taurus-Auriga Star-Forming RegionMid-infrared spectra of 65 T Tauri stars (TTS) taken with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope are modeled using dust at two temperatures to probe the radial variation…B. A. Sargent, W. J. Forrest, C. Tayrien et al.·Nov 21, 2008SaveLearn
Far-Ultraviolet Observations of Starburst Galaxies with FUSE: Galactic Feedback in the Local UniverseWe have analysed FUSE far-UV spectra of a sample of 16 local starbursts. These galaxies span ranges of almost three orders-of-magnitude in star formation rate and over two orders-of-magnitude in…J. P. Grimes, T. M. Heckman, A. Aloisi et al.·Nov 21, 2008SaveLearn
Non-LTE line formation for Pr II and Pr III in A and Ap starsNon-LTE line formation for Pr II and Pr III is considered through a range of effective temperatures between 7250 K and 9500 K. A comprehensive model atom for Pr II/III is based on the measured and…L. Mashonkina, T. Ryabchikova, A. Ryabtsev et al.·Nov 21, 2008SaveLearn
Type Ia Supernova: Calculations of Turbulent Flames Using the Linear Eddy ModelThe nature of carbon burning flames in Type Ia supernovae is explored as they interact with Kolmogorov turbulence. One-dimensional calculations using the Linear Eddy Model of Kerstein (1991)…S. E. Woosley, A. R. Kerstein, V. Sankaran et al.·Nov 21, 2008SaveLearn
How rapidly do neutron stars spin at birth?We have studied the X-ray properties of ageing historical core-collapse supernovae in nearby galaxies, using archival data from Chandra, XMM-Newton and Swift. We found possible evidence of a young…Roberto Soria, Rosalba Perna, David Pooley et al.·Nov 21, 2008SaveLearn
Properties of second generation stars in Globular ClustersWe present the first results from the analysis of GIRAFFE spectra of more than 1200 red giants stars in 19 Galactic Globular Clusters (GCs), to study the chemical composition of second generation…Eugenio Carretta, Angela Bragaglia, Raffaele G. Gratton et al.·Nov 21, 2008SaveLearn
Silica in Protoplanetary DisksMid-infrared spectra of a few T Tauri stars (TTS) taken with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope show prominent narrow emission features indicating silica…B. A. Sargent, W. J. Forrest, C. Tayrien et al.·Nov 21, 2008SaveLearn
A probable giant planet imaged in the Beta Pictoris diskSince the discovery of its dusty disk in 1984, Beta Pictoris has become the prototype of young early-type planetary systems, and there are now various indications that a massive Jovian planet is…A. -M. Lagrange, D. Gratadour, G. Chauvin et al.·Nov 21, 2008SaveLearn
Properties of WNh stars in the Small Magellanic Cloud: evidence for homogeneous evolutionWe derive the physical properties of three WNh stars in the SMC to constrain stellar evolution beyond the main sequence at low metallicity and to investigate the metallicity dependence of the…F. Martins, D. J. Hillier, J. C. Bouret et al.·Nov 21, 2008SaveLearn