Search Publications
Titan’s vertical aerosol structure at the Huygens landing site: Constraints on particle size, density, charge, and refractive index
Yelle, R. V.; Lavvas, P.; Griffith, C. A.
We present a one dimension simulation of Titan's aerosol distribution and compare our results with the haze optical properties retrieved by the DISR observations (Tomasko, M.G., Doose, L., Engel, S., Dafoe, L.E., West, R., Lemmon, M., Karkoschka, E., See, C. [2008]. Planet. Space Sci. 56, 669-707). We set the mass production of aerosols in the the…
Highest Resolution Observations of the Quietest Sun
Cao, Wenda; Yurchyshyn, Vasyl; Chae, Jongchul +4 more
Highest resolution observations made with the new 1.6 m aperture solar telescope in Big Bear Solar Observatory during this time of historic inactivity on the Sun reveal new insights into the small-scale dynamics of the Sun's photosphere. The telescope's unprecedented resolution enabled us to observe that the smallest scale photospheric magnetic fi…
Comet 67P/Churyumov-Gerasimenko: the GIADA dust environment model of the Rosetta mission target
Fulle, M.; Agarwal, J.; Lopez Moreno, J. J. +13 more
Context. The ESA Rosetta spacecraft will reach the short-period comet 67P/Churyumov-Gerasimenko in 2014. Orbiting strategy, orbiter safety conditions, landing scenarios and expected results from dust collectors depend on models of the 67P dust environment. Many papers already tackled this matter, analysing a limited set of observations, and theref…
Do black hole masses scale with classical bulge luminosities only? The case of the two composite pseudo-bulge galaxies NGC 3368 and NGC 3489
Saglia, R. P.; Nowak, N.; Davies, R. I. +3 more
It is now well established that all galaxies with a massive bulge component harbour a central supermassive black hole (SMBH). The mass of the SMBH correlates with bulge properties such as the bulge mass and the velocity dispersion, which implies that the bulge and the central BH of a galaxy have grown together during the formation process. As part…
INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey. II. Catalog of sources
Sunyaev, R.; Krivonos, R.; Tsygankov, S. +3 more
This paper is the second in a series devoted to the hard X-ray (17-60 keV) whole sky survey performed by the INTEGRAL observatory over seven years. Here we present a catalog of detected sources that includes 521 objects, 449 of which exceed a 5σ detection threshold on the time-averaged map of the sky, and 53 were detected in various subsamples of …
Interstellar CH absorption in the diffuse interstellar medium along the sight-lines to G10.6-0.4 (W31C), W49N, and W51
Perault, M.; Boulanger, F.; Falgarone, E. +55 more
We report the detection of the ground state N,J = 1,3/2 → 1,1/2 doublet of the methylidyne radical CH at ~532 GHz and ~536 GHz with the Herschel/HIFI instrument along the sight-line to the massive star-forming regions G10.6-0.4 (W31C), W49N, and W51. While the molecular cores associated with these massive star-forming regions show emission lines, …
The environmental dependence of the stellar-mass-size relation in STAGES galaxies
Wolf, Christian; Aragón-Salamanca, Alfonso; Barden, Marco +8 more
We present the stellar-mass-size relations for elliptical, lenticular and spiral galaxies in the field and cluster environments using Hubble Space Telescope/Advanced Camera for Surveys imaging and data from the Space Telescope A901/2 Galaxy Evolution Survey. We use a large sample of ~1200 field and cluster galaxies and a sub-sample of cluster core…
Linear dunes on Titan and earth: Initial remote sensing comparisons
Paillou, P.; Radebaugh, J.; Lorenz, R. +3 more
Thousands of dunes found in Cassini Radar images of the equatorial regions of Titan, a moon around Saturn, are similar in size and morphology to linear dunes on Earth. We present remote sensing images of terrestrial analogues to the dunes on Titan obtained by Landsat and radar, both at considerably higher resolution than are available at Titan, th…
Morphologies of Local Lyman Break Galaxy Analogs. II. A Comparison with Galaxies at z ~= 2-4 in ACS and WFC3 Images of the Hubble Ultra Deep Field
Rich, R. M.; Heckman, T. M.; Schiminovich, D. +4 more
Previous work has shown that Lyman break galaxies (LBGs) display a range in structures (from single and compact to more clumpy and extended) that is different from typical local star-forming galaxies. Recently, we have introduced a sample of rare, nearby (z < 0.3) starburst galaxies that appear to be good analogs of LBGs. These "Lyman break ana…
The PL calibration for Milky Way Cepheids and its implications for the distance scale
Turner, David G.
The rationale behind recent calibrations of the Cepheid PL relation using the Wesenheit formulation is reviewed and reanalyzed, and it is shown that recent conclusions regarding a possible change in slope of the PL relation for short-period and long-period Cepheids are tied to a pathological distribution of HST calibrators within the instability s…