Search Publications
CoRoT's view of newly discovered B-star pulsators: results for 358 candidate B pulsators from the initial run's exoplanet field data
Auvergne, M.; Deleuil, M.; Jorda, L. +18 more
Context: We search for new variable B-type pulsators in the CoRoT data assembled primarily for planet detection, as part of CoRoT's additional programme.
Aims: We aim to explore the properties of newly discovered B-type pulsators from the uninterrupted CoRoT space-based photometry and to compare them with known members of the β Cep and slowly …
Earth's ionospheric outflow dominated by hidden cold plasma
André, M.; Eriksson, A. I.; Cully, C. M. +3 more
The Earth constantly loses matter, mostly in the form of H+ and O+ ions. Analysis of measurements from the Cluster spacecraft reveals that the total loss of cold ions, below 1 eV in thermal energy, is larger than the previously observed, more energetic, outflow.
Multiwavelength Observations of a TeV-Flare from W Comae
Pian, E.; Costa, E.; Cucchiara, A. +165 more
We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z = 0.102) during a strong outburst of very high energy gamma-ray emission in 2008 June. The very high energy gamma-ray signal was detected by VERITAS on 2008 June 7-8 with a flux F(>200 GeV) =(5.7 ± 0.6) × 10-11
The AzTEC/SMA Interferometric Imaging Survey of Submillimeter-selected High-redshift Galaxies
Wilner, David J.; Yun, Min S.; Fazio, Giovanni G. +14 more
We present results from a continuing interferometric survey of high-redshift submillimeter galaxies (SMGs) with the Submillimeter Array, including high-resolution (beam size ~2 arcsec) imaging of eight additional AzTEC 1.1 mm selected sources in the COSMOS field, for which we obtain six reliable (peak signal-to-noise ratio (S/N) >5 or peak S/N …
Population Parameters of Intermediate-Age Star Clusters in the Large Magellanic Cloud. I. NGC 1846 and its Wide Main-Sequence Turnoff
Chandar, Rupali; Goudfrooij, Paul; Puzia, Thomas H. +1 more
The Advanced Camera for Surveys onboard the Hubble Space Telescope has been used to obtain deep, high-resolution images of the intermediate-age star cluster NGC 1846 in the Large Magellanic Cloud. We present new color-magnitude diagrams (CMDs) based on F435W, F555W, and F814W imaging. We test the previously observed broad main-sequence turnoff (MS…
The population of early-type galaxies at 1 < z < 2 - new clues on their formation and evolution
Andreon, S.; Longhetti, M.; Saracco, P.
We present the morphological analysis based on Hubble Space Telescope HST-NICMOS (Near-Infrared Camera and Multi-Object Spectrometer) observations in the F160W filter (λ ~= 1.6µm) of a sample of 32 early-type galaxies (ETGs) at 1 < z < 2 with spectroscopic confirmation of their redshift and spectral type. The 32 ETGs at <z> ~ 1.5…
The topography and morphology of low shields and associated landforms of plains volcanism in the Tharsis region of Mars
Hauber, Ernst; Gwinner, Klaus; Greeley, R. +2 more
The morphology and topography of volcanic landforms provide critical information to the investigation of their tectonic setting and the physical characteristics (e.g., rheology) of their eruption products. Their investigation is also an important prerequisite for studies of comparative planetology, (e.g., the comparison between surface features of…
Phyllosilicates and sulfates at Endeavour Crater, Meridiani Planum, Mars
Arvidson, R. E.; Mustard, J. F.; Wray, J. J. +5 more
Phyllosilicates have been identified on the Martian surface from orbit, and are hypothesized to have formed under wet, non-acidic conditions early in the planet's history. Exposures of these minerals have not yet been examined by a landed mission. Using Mars Reconnaissance Orbiter data, we report the detection of phyllosilicate-bearing outcrops th…
Mapping the Dark Matter from UV Light at High Redshift: An Empirical Approach to Understand Galaxy Statistics
Ferguson, Henry C.; Giavalisco, Mauro; Somerville, Rachel S. +5 more
We present a simple formalism to interpret the observations of two galaxy statistics, the UV luminosity function (LF) and two-point correlation functions for star-forming galaxies at z~4, 5, and 6 in the context of Λ cold dark matter cosmology. Both statistics are the result of how star formation takes place in dark matter halos, and thus are used…
Observing Episodic Coronal Heating Events Rooted in Chromospheric Activity
De Pontieu, Bart; McIntosh, Scott W.
We present the results of a multi-wavelength study of episodic plasma injection into the corona of active region (AR) 10942. We exploit long-exposure images of the Hinode and Transition Region and Coronal Explorer spacecraft to study the properties of faint, episodic, "blobs" of plasma that are propelled upward along coronal loops that are rooted …