Showing 2017 · astro-ph.EPShow all

113 papers · 2 filters

astro-ph.EP2017★ 41 cited

The Taurus Boundary of Stellar/Substellar (TBOSS) Survey II. Disk Masses from ALMA Continuum Observations

K. Ward-Duong, J. Patience, J. Bulger +9

We report 885m ALMA continuum flux densities for 24 Taurus members spanning the stellar/substellar boundary, with spectral types from M4 to M7.75. Of the 24 systems, 22 are dete…

astro-ph.EP2017★ 42 cited

Dependence of the Martian radiation environment on atmospheric depth: Modeling and measurement

Jingnan Guo, Tony C. Slaba, Cary Zeitlin +9

The energetic particle environment on the Martian surface is influenced by solar and heliospheric modulation and changes in the local atmospheric pressure (or column depth). The Ra…

astro-ph.EP2017★ 16 cited

Atmospheric circulation, chemistry, and infrared spectra of Titan-like exoplanets around different stellar types

Juan M. Lora, Tiffany Kataria, Peter Gao

With the discovery of ever smaller and colder exoplanets, terrestrial worlds with hazy atmospheres must be increasingly considered. Our Solar System's Titan is a prototypical hazy…

astro-ph.EP2017★ 122 cited

Hydrogen dimers in giant-planet infrared spectra

L. N. Fletcher, M. Gustafsson, G. S. Orton

Despite being one of the weakest dimers in nature, low-spectral-resolution Voyager/IRIS observations revealed the presence of (H) dimers on Jupiter and Saturn in the 1980s.…

astro-ph.EP2017★ 106 cited

Discovery of a point-like source and a third spiral arm in the transition disk around the Herbig Ae star MWC 758

M. Reggiani, V. Christiaens, O. Absil +20

Transition disks offer the extraordinary opportunity to look for newly born planets and investigate the early stages of planet formation. In this context we observed the Herbig A5…

astro-ph.EP2017★ 52 cited

The Thermophysical Properties of the Bagnold Dunes, Mars: Ground-truthing Orbital Data

Christopher S. Edwards, Sylvain Piqueux, Victoria E. Hamilton +7

In this work, we compare the thermophysical properties and particle sizes derived from the Mars Science Laboratory (MSL) rover's Ground Temperature Sensor (GTS) of the Bagnold dune…

astro-ph.EP2017★ 173 cited

The Complete transmission spectrum of WASP-39b with a precise water constraint

Hannah R. Wakeford, David K. Sing, Drake Deming +12

WASP-39b is a hot Saturn-mass exoplanet with a predicted clear atmosphere based on observations in the optical and infrared. Here we complete the transmission spectrum of the atmos…

astro-ph.EP2017★ 36 cited

OGLE-2016-BLG-1190Lb: First Spitzer Bulge Planet Lies Near the Planet/Brown-Dwarf Boundary

Y. -H. Ryu, J. C. Yee, A. Udalski +106

We report the discovery of OGLE-2016-BLG-1190Lb, which is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two…

astro-ph.EP2017★ 42 cited

YORP and Yarkovsky effects in asteroids (1685) Toro, (2100) Ra-Shalom, (3103) Eger, and (161989) Cacus

J. Durech, D. Vokrouhlicky, P. Pravec +22

The rotation states of small asteroids are affected by a net torque arising from an anisotropic sunlight reflection and thermal radiation from the asteroids' surfaces. On long time…

astro-ph.EP2017★ 14 cited

A Search for Temporal Changes on Pluto and Charon

J. D. Hofgartner, B. J. Buratti, S. L. Devins +12

A search for temporal changes on Pluto and Charon was motivated by (1) the discovery of young surfaces in the Pluto system that imply ongoing or recent geologic activity, (2) the d…

astro-ph.EP2017★ 13 cited

The Effects of Protostellar Disk Turbulence on CO Emission Lines: A Comparison Study of Disks with Constant CO Abundance vs. Chemically Evolving Disks

Mo Yu, Neal J. Evans, Sarah E. Dodson-Robinson +2

Turbulence is the leading candidate for angular momentum transport in protoplanetary disks and therefore influences disk lifetimes and planet formation timescales. However, the tur…

astro-ph.EP2017★ 355 cited

Global regolith thermophysical properties of the Moon from the Diviner Lunar Radiometer Experiment

Paul O. Hayne, Joshua L. Bandfield, Matthew A. Siegler +8

We used infrared data from the Lunar Reconnaissance Orbiter (LRO) Diviner Lunar Radiometer Experiment to globally map thermophysical properties of the Moon's regolith fines layer.…

astro-ph.EP2017★ 46 cited

Hubble PanCET: An isothermal day-side atmosphere for the bloated gas-giant HAT-P-32Ab

N. Nikolov, D. K. Sing, J. Goyal +20

We present a thermal emission spectrum of the bloated hot Jupiter HAT-P-32Ab from a single eclipse observation made in spatial scan mode with the Wide Field Camera 3 (WFC3) aboard…

astro-ph.EP2017★ 58 cited

Retrieval of Water Vapor Column Abundance and Aerosol Properties from ChemCam Passive Sky Spectroscopy

Timothy H. McConnochie, Michael D. Smith, Michael J. Wolff +15

We derive water vapor column abundances and aerosol properties from Mars Science Laboratory (MSL) ChemCam passive mode observations of scattered sky light. Each ChemCam passive sky…

astro-ph.EP2017★ 63 cited

Evidence of sub-surface energy storage in comet 67P from the outburst of 2016 July 3

J. Agarwal, V. Della Corte, P. D. Feldman +67

On 3 July 2016, several instruments on board ESA's Rosetta spacecraft detected signs of an outburst event on comet 67P, at a heliocentric distance of 3.32 AU from the sun, outbound…

astro-ph.EP2017★ 128 cited

Radiation Hydrodynamical Turbulence In Protoplanetary Disks: Numerical Models and Observational Constraints

Mario Flock, Richard P. Nelson, Neal J. Turner +5

Planets are born in protostellar disks, which are now observed with enough resolution to address questions about internal gas flows. Candidates for driving the flows include magnet…

astro-ph.EP2017★ 2 cited

The Science Case for an Extended Spitzer Mission

Jennifer C. Yee, Giovanni G. Fazio, Robert Benjamin +45

Although the final observations of the Spitzer Warm Mission are currently scheduled for March 2019, it can continue operations through the end of the decade with no loss of photome…

astro-ph.EP2017★ 80 cited

A Case for an Atmosphere on Super-Earth 55 Cancri e

Isabel Angelo, Renyu Hu

One of the primary questions when characterizing Earth-sized and super-Earth-sized exoplanets is whether they have a substantial atmosphere like Earth and Venus or a bare-rock surf…

astro-ph.EP2017★ 13 cited

Ammonia in Jupiter's troposphere from high-resolution 5-\textmu m spectroscopy

Rohini S. Giles, Leigh N. Fletcher, Patrick G. J. Irwin +2

Jupiter's tropospheric ammonia (NH\textsubscript{3}) abundance is studied using spatially-resolved 5-\textmu m observations from CRIRES, a high resolution spectrometer at the Europ…

astro-ph.EP2017★ 38 cited

OGLE-2016-BLG-0613LABb: A Microlensing Planet in a Binary System

C. Han, A. Udalski, A. Gould +37

We present the analysis of OGLE-2016-BLG-0613, for which the lensing light curve appears to be that of a typical binary-lens event with two caustic spikes but with a discontinuous…

astro-ph.EP2017★ 12 cited

RoboTAP - target priorities for robotic microlensing observations

M. Hundertmark, R. A. Street, Y. Tsapras +21

Context. The ability to automatically select scientifically-important transient events from an alert stream of many such events, and to conduct follow-up observations in response,…

astro-ph.EP2017★ 111 cited

Phase curves of WASP-33b and HD 149026b and a New Correlation Between Phase Curve Offset and Irradiation Temperature

Michael Zhang, Heather A. Knutson, Tiffany Kataria +9

We present new 3.6 and 4.5 Spitzer phase curves for the highly irradiated hot Jupiter WASP-33b and the unusually dense Saturn-mass planet HD 149026b. As part of this analysis,…

astro-ph.EP2017★ 27 cited

An Isolated Microlens Observed from K2, Spitzer and Earth

Wei Zhu, A. Udalski, C. Huang +50

We present the result of microlensing event MOA-2016-BLG-290, which received observations from the two-wheel Kepler (K2), Spitzer, as well as ground-based observatories. A joint an…

astro-ph.EP2017★ 24 cited

Neptune long-lived atmospheric features in 2013-2015 from small (28-cm) to large (10-m) telescopes

R. Hueso, I. de Pater, A. Simon +32

Since 2013, observations of Neptune with small telescopes have resulted in several detections of long-lived bright atmospheric features that have also been observed by large telesc…