Search Publications
Constraints on the Faint End of the Quasar Luminosity Function at z ~ 5 in the COSMOS Field
Taniguchi, Y.; Salvato, M.; Morokuma, T. +12 more
We present the result of our low-luminosity quasar survey in the redshift range of 4.5 <~ z <~ 5.5 in the COSMOS field. Using the COSMOS photometric catalog, we selected 15 quasar candidates with 22 < i' < 24 at z ~ 5 that are ~3 mag fainter than the Sloan Digital Sky Survey quasars in the same redshift range. We obtained optical spect…
The ElIXr Galaxy Survey. II. Baryons and Dark Matter in an Isolated Elliptical Galaxy
Humphrey, Philip J.; Buote, David A.; Ponman, Trevor J. +1 more
The Elliptical Isolated X-ray (ElIXr) Galaxy Survey is a volume-limited (<110 Mpc) study of optically selected, isolated, L * elliptical galaxies to provide an X-ray census of galaxy-scale (virial mass, M vir <~ 1013 M ⊙) objects and identify candidates for detailed hydrostatic mass modeling. In th…
Coronal hole boundaries evolution at small scales. III. EIS and SUMER views
Doyle, J. G.; Madjarska, M. S.; Huang, Z. +1 more
Context. We report on the plasma properties of small-scale transient events identified in the quiet Sun, coronal holes and their boundaries.
Aims: We aim at deriving the physical characteristics of events that were identified as small-scale transient brightenings in XRT images.
Methods: We used spectroscopic co-observations from SUMER/So…
Far-IR/Submillimeter Spectroscopic Cosmological Surveys: Predictions of Infrared Line Luminosity Functions for z < 4 Galaxies
Spinoglio, Luigi; Franceschini, Alberto; Gruppioni, Carlotta +3 more
Star formation and accretion onto supermassive black holes in the nuclei of galaxies are the two most energetic processes in the universe, producing the bulk of the observed emission throughout its history. We simulated the luminosity functions of star-forming and active galaxies for spectral lines that are thought to be good spectroscopic tracers…
Kelvin-Helmholtz instability at Saturn's magnetopause: Cassini ion data analysis
Wilson, R. J.; Delamere, P. A.; Bagenal, F. +1 more
On 13 December 2004 Cassini, on approach to Saturn from the dawn flank, crossed the magnetopause multiple times. During these events the plasma spectrometer had a good field of view of both the magnetospheric and magnetosheath plasmas that often flow in nearly opposite directions (compared with more typical orientations that only allow one regime …
An indirect measurement of gas evolution in galaxies at 0.5 < z < 2.0
Popping, G.; Caputi, K. I.; Trager, S. C. +1 more
One key piece of information missing from high-redshift galaxy surveys is the galaxies' cold gas contents. We present a new method to indirectly determine cold gas surface densities and integrated gas masses from galaxy star formation rates and to separate the atomic and molecular gas components. Our predicted molecular and total gas surface densi…
Cassini in Titan's tail: CAPS observations of plasma escape
Lewis, G. R.; Coates, A. J.; Thomsen, M. F. +10 more
We present observations of CAPS electron and ion spectra during Titan distant tail crossings at 5,000-10,000 km altitude by the Cassini spacecraft. In common with closer tail encounters, we identify ionospheric plasma in the tail. Some of the electron spectra indicate a direct magnetic connection to Titan's dayside ionosphere due to the presence o…
General circulation and transport in Saturn's upper troposphere and stratosphere
Moses, Julianne I.; Friedson, A. James
We present a model for the general circulation and dynamical transport in Saturn's upper troposphere and stratosphere and derive the effective advective circulation and eddy transport coefficients required for use in two-dimensional (latitude-altitude) photochemistry-transport models. A three-dimensional Outer-Planet General Circulation Model (OPG…
A universal stellar mass-size relation of galaxies in the GOODS-North region
Kajisawa, Masaru; Ichikawa, Takashi; Akhlaghi, Mohammad
We present scaling relations between the stellar mass (M*) and size of galaxies at 0.3 < z < 3 for half-light (R50) and 90 per cent-light (R90) radii, using a deep K-band-selected catalogue taken with the Subaru Telescope and Multi-Object Infrared Camera and Spectrograph (MOIRCS) in the Great Observatories Or…
Detecting and modelling the magnetic field of the β Cephei star V 2052 Ophiuchi
Thizy, O.; Frémat, Y.; Neiner, C. +5 more
Aims: Following the indirect detection of a magnetic field in the β Cephei star