Mid-Infrared Properties of Disk Averaged Observations of Earth with AIRSWe have investigated mid-infrared spectra of Earth obtained by the Atmospheric Infrared Sounder (AIRS) instrument on-board the AQUA spacecraft to explore the characteristics that may someday be…Thomas Hearty, Inseok Song, Sam Kim et al.·Oct 16, 2008SaveLearn
Amplification of magnetic fields by dynamo action in Gaussian-correlated helical turbulenceWe investigate the growth and structure of magnetic fields amplified by kinematic dynamo action in turbulence with non-zero kinetic helicity. We assume a simple Gaussian velocity correlation tensor,…Leonid Malyshkin, Stanislav Boldyrev·Oct 16, 2008SaveLearn
Evolution of very low mass pre-main sequence stars and young brown dwarfs under accretion: A phenomenological approachIn the poster presented in Cool Star 15, we analyzed the effect of disk accretion on the evolution of very low mass pre-main sequence stars and young brown dwarfs and the resulting uncertainties on…Jose Gallardo, Isabelle Baraffe, Gilles Chabrier·Oct 16, 2008SaveLearn
HHSMT Observations of the Venusian Mesospheric Temperature, Winds, and CO abundance around the MESSENGER FlybyWe present submillimeter observations of 12CO J=3-2 and J=2-1, and 13CO J = 2-1 lines of the Venusian mesosphere and lower thermosphere with the Heinrich Hertz Submillimeter Telescope (HHSMT) taken…M. Rengel, P. Hartogh, C. Jarchow·Oct 16, 2008SaveLearn
Encounter-driven accretion in young stellar clusters - A connection to FUors?Context: The brightness of FUors increases by several magnitudes within one to several years. The currently favoured explanation for this brightness boost is that of dramatically rising accretion…S. Pfalzner·Oct 16, 2008SaveLearn
Observations of the Goldreich-Kylafis effect in star-forming regions with XPOL at the IRAM 30m telescopeThe Goldreich-Kylafis (GK) effect causes certain molecular line emission to be weakly linearly polarized, e.g., in the presence of a magnetic field. Compared to polarized dust emission, the GK effect…Jan Forbrich, Helmut Wiesemeyer, Clemens Thum et al.·Oct 16, 2008SaveLearn
The relation between stellar mass and weak lensing signal around galaxies: Implications for MONDWe study the amplitude of the weak gravitational lensing signal as a function of stellar mass around a sample of relatively isolated galaxies. This selection of lenses simplifies the interpretation…Lanlan Tian, Henk Hoekstra, Hongsheng Zhao·Oct 16, 2008SaveLearn
Multi-Scale CLEAN: A comparison of its performance against classical CLEAN in galaxies using THINGSA practical evaluation of the Multi-Scale CLEAN algorithm is presented. The data used in the comparisons are taken from The HI Nearby Galaxy Survey (THINGS). The implementation of Multi-Scale CLEAN…J. W. Rich, W. J. G. de Blok, T. J. Cornwell et al.·Oct 16, 2008SaveLearn
The Destruction of Thin Stellar Disks Via Cosmologically Common Satellite Accretion EventsMost Galaxy-sized systems (Mhost ~ 1012 Msun) in the LCDM cosmology are expected to have accreted at least one satellite with a total mass Msat ~ 1011 Msun = 3Mdisk in the past 8 Gyr. Analytic…Chris W. Purcell, Stelios Kazantzidis, James S. Bullock·Oct 15, 2008SaveLearn
Measuring Dust Production in the Small Magellanic Cloud Core-Collapse Supernova Remnant 1E 0102.2-7219We present mid-infrared spectral mapping observations of the core-collapse supernova remnant 1E 0102.2-7219 in the Small Magellanic Cloud using the InfraRed Spectrograph (IRS) on the Spitzer Space…Karin M. Sandstrom, Alberto D. Bolatto, Snezana Stanimirovic et al.·Oct 15, 2008SaveLearn
Molecules in G1.6-0.025 - 'Hot' Chemistry in the Absence of Star Formation at the Periphery of the Galactic Center RegionWe present molecular line mapping of the Giant Molecular Cloud G1.6-0.025, which is located at the high longitude end of the Central Molecular Zone of our Galaxy. We assess the degree of star…Karl M. Menten, Robert W. Wilson, Silvia Leurini et al.·Oct 15, 2008SaveLearn
The population of early-type galaxies at 1<z<2 - New clues on their formation and evolution[Abridged]We present the morphological analysis based on HST-NICMOS observations in the F160W filter of a sample of 32 early-type galaxies (ETGs) at 1<z<2 with spectroscopic confirmation of their…P. Saracco, M. Longhetti, S. Andreon·Oct 15, 2008SaveLearn
The Correlation of Star Formation Quenching with Internal Galaxy Properties and EnvironmentWe investigate the correlation of star formation quenching with internal galaxy properties and large scale environment (halo mass) in empirical data and theoretical models. We make use of the…Taysun Kimm, Rachel S. Somerville, Sukyoung K. Yi et al.·Oct 15, 2008SaveLearn
Submillimeter water and ammonia absorption by the peculiar z~0.89 interstellar medium in the gravitational lens of the PKS 1830-211 systemUsing the Atacama Pathfinder Experiment (APEX) telescope we have detected the rotational ground-state transitions of ortho-ammonia and ortho-water toward the redshift ~0.89 absorbing galaxy in the…K. M. Menten, R. Guesten, S. Leurini et al.·Oct 15, 2008SaveLearn
Magnetohydrodynamic Effects in Propagating Relativistic Jets: Reverse Shock and Magnetic AccelerationWe solve the Riemann problem for the deceleration of an arbitrarily magnetized relativistic flow injected into a static unmagnetized medium in one dimension. We find that for the same initial Lorentz…Yosuke Mizuno, Bing Zhang, Bruno Giacomazzo et al.·Oct 15, 2008SaveLearn
First Confirmed Detection of a Bipolar Molecular Outflow from a Young Brown DwarfStudying the earliest stages in the birth of stars is crucial for understanding how they form. Brown dwarfs with masses between that of stars and planets are not massive enough to maintain stable…Ngoc Phan-Bao, Basmah Riaz, Chin-Fei Lee et al.·Oct 15, 2008SaveLearn
Sensitivity of p modes for constraining velocities of microscopic diffusion of the elementsConventional astrophysical observations have failed to provide stringent constraints on physical processes operating in the interior of the stars. However, satellite missions now promise a solution…Orlagh L. Creevey, Savita Mathur, Rafael A. García·Oct 15, 2008SaveLearn
Simulating Subhalos at High Redshift: Merger Rates, Counts, and TypesGalaxies are believed to be in one-to-one correspondence with simulated dark matter subhalos. We use high-resolution N-body simulations of cosmological volumes to calculate the statistical properties…Andrew R. Wetzel, J. D. Cohn, Martin White·Oct 15, 2008SaveLearn
Lessons Learned from Sloan Digital Sky Survey OperationsAstronomy is changing. Large projects, large collaborations, and large budgets are becoming the norm. The Sloan Digital Sky Survey (SDSS) is one example of this new astronomy, and in operating the…S. J. Kleinman, J. E. Gunn, B. Boroski et al.·Oct 15, 2008SaveLearn
Pathways to massive black holes and compact star clusters in pre-galactic dark matter haloes with virial temperatures > 10000KLarge dynamic range numerical simulations of atomic cooling driven collapse of gas in pre-galactic DM haloes with Tvir ~ 10000 K show that the gas loses 90% and more of its angular momentum before…John A. Regan, Martin G. Haehnelt·Oct 15, 2008SaveLearn
Merger Induced Globular Cluster Formation and Galaxy EvolutionBased on the earlier work of Gunn and McCrea we model the formation of globular clusters in merging galaxies. Neutral hydrogen observations of dwarf irregular galaxies as well as more luminous…F. D. A. Hartwick·Oct 15, 2008SaveLearn
Solar-like oscillations in red giants in the CoRoT exo-fieldAsteroseismic observations from space can provide us with long time series of uninterrupted high quality data for many stars at the same time. The CoRoT satellite (Convection Rotation and planetary…S. Hekker, C. Barban, T. Kallinger et al.·Oct 15, 2008SaveLearn
Simulating the formation of a proto-cluster at z~2We present results from two high-resolution hydrodynamical simulations of proto-cluster regions at z~2.1. The simulations have been compared to observational results for the socalled Spiderweb galaxy…A. Saro, S. Borgani, L. Tornatore et al.·Oct 15, 2008SaveLearn
Shells, jets, and internal working surfaces in the molecular outflow from IRAS 04166+2706Context: IRAS 04166+2706 in Taurus is one of the most nearby young stellar objects whose molecular outflow contains a highly collimated fast component. Methods: We have observed the IRAS 04166+2706…J. Santiago-Garcia, M. Tafalla, D. Johnstone et al.·Oct 15, 2008SaveLearn
A Steep Faint-End Slope of the UV Luminosity Function at z~2-3: Implications for the Global Stellar Mass Density and Star Formation in Low Mass HalosWe use the deep ground-based optical photometry of the Lyman Break Galaxy (LBG) Survey to derive robust measurements of the faint-end slope (alpha) of the UV LF at redshifts 1.9<z<3.4. Our sample…Naveen A. Reddy, Charles C. Steidel·Oct 15, 2008SaveLearn