Showing 2015 · astro-ph.EPShow all

70 papers · 2 filters

astro-ph.EP2015★ 43 cited

Neptune's Dynamic Atmosphere from Kepler K2 Observations: Implications for Brown Dwarf Light Curve Analyses

Amy A. Simon, Jason F. Rowe, Patrick Gaulme +9

Observations of Neptune with the Kepler Space Telescope yield a 49-day light curve with 98% coverage at a 1-minute cadence. A significant signature in the light curve comes from di…

astro-ph.EP2015★ 22 cited

A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b

Pushkar Kopparla, Vijay Natraj, Xi Zhang +3

We present a multiple scattering vector radiative transfer model which produces disk integrated, full phase polarized light curves for reflected light from an exoplanetary atmosphe…

astro-ph.EP2015★ 139 cited

Tracing the fate of carbon and the atmospheric evolution of Mars

Renyu Hu, David M. Kass, Bethany L. Ehlmann +1

The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state. However, no solutions for this evolution have previously been found to satisfy…

astro-ph.EP2015★ 143 cited

3.6 and 4.5 m Phase Curves of the Highly-Irradiated Hot Jupiters WASP-19b and HAT-P-7b

Ian Wong, Heather A. Knutson, Tiffany Kataria +15

We analyze full-orbit phase curve observations of the transiting hot Jupiters WASP-19b and HAT-P-7b at 3.6 and 4.5 m obtained using the Spitzer Space Telescope. For WASP-19b, we…

astro-ph.EP2015★ 73 cited

Campaign 9 of the Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey

Calen B. Henderson, Radosław Poleski, Matthew Penny +118

's Campaign 9 (C9) will conduct a 3.7 deg survey toward the Galactic bulge from 7/April through 1/July of 2016 that will leverage the spatial separation between…

astro-ph.EP2015★ 238 cited

Planetary Candidates Observed by Kepler. VII. The First Fully Uniform Catalog Based on The Entire 48 Month Dataset (Q1-Q17 DR24)

Jeffrey L. Coughlin, F. Mullally, Susan E. Thompson +32

We present the seventh Kepler planet candidate catalog, which is the first to be based on the entire, uniformly processed, 48 month Kepler dataset. This is the first fully automate…

astro-ph.EP2015★ 127 cited

Kepler-1647b: the largest and longest-period Kepler transiting circumbinary planet

Veselin B. Kostov, Jerome A. Orosz, William F. Welsh +28

We report the discovery of a new Kepler transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period…

astro-ph.EP2015★ 81 cited

A Characteristic Transmission Spectrum dominated by HO applies to the majority of HST/WFC3 exoplanet observations

Aishwarya R. Iyer, Mark R. Swain, Robert T. Zellem +4

Currently, 19 transiting exoplanets have published transmission spectra obtained with the Hubble/WFC3 G141 near-IR grism. Using this sample, we have undertaken a uniform analysis i…

astro-ph.EP2015★ 197 cited

New constraints on Saturn's interior from Cassini astrometric data

Valéry Lainey, Robert A. Jacobson, Radwan Tajeddine +15

Using astrometric observations spanning more than a century and including a large set of Cassini data, we determine Saturn's tidal parameters through their current effects on the o…

astro-ph.EP2015★ 19 cited

Models of the Eta Corvi debris disk from the Keck Interferometer, Spitzer and Herschel

J. Lebreton, C. Beichman, G. Bryden +4

Debris disks are signposts of analogues to small body populations of the Solar System, often however with much higher masses and dust production rates. The disk associated with the…

astro-ph.EP2015★ 43 cited

On shocks driven by high-mass planets in radiatively inefficient disks. II. Three-dimensional global disk simulations

Wladimir Lyra, Alexander J. W. Richert, Aaron Boley +4

Recent high-resolution, near-infrared images of protoplanetary disks have shown that these disks often present spiral features. Spiral arms are among the structures predicted decad…

astro-ph.EP2015★ 7 cited

Observing Outer Planet Satellites (except Titan) with JWST: Science Justification and Observational Requirements

Laszlo Keszthelyi, Will Grundy, John Stansberry +6

The James Webb Space Telescope (JWST) will allow observations with a unique combination of spectral, spatial, and temporal resolution for the study of outer planet satellites withi…

astro-ph.EP2015★ 10 cited

Viscous Instability Triggered by Layered Accretion in Protoplanetary Disks

Yasuhiro Hasegawa, Taku Takeuchi

Layered accretion is one of the inevitable ingredients in protoplanetary disks when disk turbulence is excited by magnetorotational instabilities (MRIs). In the accretion, disk sur…

astro-ph.EP2015★ 31 cited

Titan Science with the James Webb Space Telescope (JWST)

Conor A. Nixon, Richard K. Achterberg, Mate Adamkovics +12

The James Webb Space Telescope (JWST), scheduled for launch in 2018, is the successor to the Hubble Space Telescope (HST) but with a significantly larger aperture (6.5 m) and advan…

astro-ph.EP2015★ 485 cited

The Pluto system: Initial results from its exploration by New Horizons

S. A. Stern, F. Bagenal, K. Ennico +148

The Pluto system was recently explored by NASA's New Horizons spacecraft, making closest approach on 14 July 2015. Pluto's surface displays diverse landforms, terrain ages, albedos…

astro-ph.EP2015★ 67 cited

Spatially Resolved Spectroscopy of Europa: The Distinct Spectrum of Large-scale Chaos

Patrick D. Fischer, Michael E. Brown, Kevin P. Hand

We present a comprehensive analysis of spatially resolved moderate spectral resolution near infrared spectra obtained with the adaptive optics system at the Keck Observatory. We id…

astro-ph.EP2015★ 10 cited

Pairs and Groups of Genetically Related Long-Period Comets and Probable Identity of the Mysterious Lick Object of 1921

Zdenek Sekanina, Rainer Kracht

We present the history of investigation of the dynamical properties of pairs and groups of genetically related long-period comets (other than the Kreutz sungrazing system). Members…

astro-ph.EP2015★ 29 cited

Cometary Science with the James Webb Space Telescope

Michael S. P. Kelley, Charles E. Woodward, Dennis Bodewits +12

The James Webb Space Telescope (JWST), as the largest space-based astronomical observatory with near- and mid-infrared instrumentation, will elucidate many mysterious aspects of co…

astro-ph.EP2015★ 10 cited

Observing Near-Earth Objects with the James Webb Space Telescope

Cristina A. Thomas, Paul Abell, Julie Castillo-Rogez +6

The James Webb Space Telescope (JWST) has the potential to enhance our understanding of near-Earth objects (NEOs). We present results of investigations into the observability of NE…

astro-ph.EP2015★ 2 cited

Spitzer IRAC Photometry for Time Series in Crowded Fields

S. Calchi Novati, A. Gould, J. C. Yee +22

We develop a new photometry algorithm that is optimized for time series in crowded fields and that is particularly adapted to faint and/or heavily blended targets. We app…

astro-ph.EP2015

Direct imaging of an asymmetric debris disk in the HD 106906 planetary system

Paul G. Kalas, Abhijith Rajan, Jason J. Wang +53

We present the first scattered light detections of the HD 106906 debris disk using Gemini/GPI in the infrared and HST/ACS in the optical. HD 106906 is a 13 Myr old F5V star in the…

astro-ph.EP2015★ 23 cited

Spectral analysis of Uranus' 2014 bright storm with VLT/SINFONI

Patrick G. J. Irwin, Leigh N. Fletcher, Peter L. Read +5

An extremely bright storm system observed in Uranus' atmosphere by amateur observers in September 2014 triggered an international campaign to observe this feature with many telesco…

astro-ph.EP2015★ 1 cited

Silicates on Iapetus from Cassini's Composite Infrared Spectrometer

Cindy L. Young, James J. Wray, Roger N. Clark +5

We present the first spectral features obtained from Cassini's Composite Infrared Spectrometer (CIRS) for any icy moon. The spectral region covered by CIRS focal planes (FP) 3 and…

astro-ph.EP2015★ 34 cited

Meridional variation in tropospheric methane on Titan observed with AO spectroscopy at Keck and VLT

Máté Ádámkovics, Jonathan L. Mitchell, Alexander G. Hayes +10

The spatial distribution of the tropospheric methane on Titan was measured using near-infrared spectroscopy. Ground-based observations at 1.5 (H-band) were performed duri…