Showing 2010 · astro-ph.EPShow all

44 papers · 2 filters

astro-ph.EP2010★ 58 cited

Orbits of Near-Earth Asteroid Triples 2001 SN263 and 1994 CC: Properties, Origin, and Evolution

Julia Fang, Jean-Luc Margot, Marina Brozovic +3

Three-body model fits to Arecibo and Goldstone radar data reveal the nature of two near-Earth asteroid triples. Triple-asteroid system 2001 SN263 is characterized by a primary of ~…

astro-ph.EP2010★ 38 cited

VLBA Astrometric Observations of the Cassini Spacecraft at Saturn

D. L. Jones, E. Fomalont, V. Dhawan +5

The planetary ephemeris is an essential tool for interplanetary spacecraft navigation, studies of solar system dynamics (including, for example, barycenter corrections for pulsar t…

astro-ph.EP2010★ 10 cited

Spitzer Spectroscopy of the Circumprimary Disk in the Binary Brown Dwarf 2MASS J04414489+2301513

Lucia Adame, Nuria Calvet, K. L. Luhman +6

Using the Spitzer Infrared Spectrograph, we have performed mid-infrared spectroscopy on the young binary brown dwarf 2MASS J04414489+2301513 (15 AU) in the Taurus star-forming regi…

astro-ph.EP2010★ 93 cited

Thermo-physical properties of 162173 (1999 JU3), a potential flyby and rendezvous target for interplanetary missions

T. G. Mueller, J. Durech, S. Hasegawa +15

Near-Earth asteroid 162173 (1999 JU3) is a potential flyby and rendezvous target for interplanetary missions because of its easy to reach orbit. The physical and thermal properties…

astro-ph.EP2010★ 19 cited

On the volatile enrichments and heavy element content in HD 189733b

O. Mousis, J. I. Lunine, J. -M. Petit +13

Favored theories of giant planet formation center around two main paradigms, namely the core accretion model and the gravitational instability model. These two formation scenarios…

astro-ph.EP2010★ 256 cited

Interior Models of Uranus and Neptune

Ravit Helled, John D. Anderson, Morris Podolak +1

'Empirical' models (pressure vs. density) of Uranus and Neptune interiors constrained by the gravitational coefficients J_2, J_4, the planetary radii and masses, and Voyager solid-…

astro-ph.EP2010★ 111 cited

A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2

Colin Snodgrass, Cecilia Tubiana, Jean-Baptiste Vincent +15

The peculiar object P/2010 A2 was discovered by the LINEAR near-Earth asteroid survey in January 2010 and given a cometary designation due to the presence of a trail of material, a…

astro-ph.EP2010★ 45 cited

Radio Observations of HD 80606 Near Planetary Periastron

T. J. W. Lazio, P. D. Shankland, W. M. Farrell +1

This paper reports Very Large Array observations at 325 and 1425 MHz (90cm and 20cm) during and near the periastron passage of HD 80606b on 2007 November 20. We obtain flux density…

astro-ph.EP2010★ 11 cited

The PHASES Differential Astrometry Data Archive. III. Limits to Tertiary Companions

Matthew W. Muterspaugh, Benjamin F. Lane, S. R. Kulkarni +4

The Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) monitored 51 subarcsecond binary systems to evaluate whether tertiary companions as small as Jovian pla…

astro-ph.EP2010★ 18 cited

The Structure of the β Leonis Debris Disk

Nathan D. Stock, Kate Y. L. Su, Wilson Liu +6

We combine nulling interferometry at 10 μm using the MMT and Keck Telescopes with spectroscopy, imaging, and photometry from 3 to 100 μm using Spitzer to study the debris disk arou…

astro-ph.EP2010★ 34 cited

First Earth-based Detection of a Superbolide on Jupiter

R. Hueso, A. Wesley, C. Go +14

Cosmic collisions on planets cause detectable optical flashes that range from terrestrial shooting stars to bright fireballs. On June 3, 2010 a bolide in Jupiter's atmosphere was s…

astro-ph.EP2010★ 160 cited

Characterizing the Variability of Stars with Early-Release Kepler Data

David R. Ciardi, Kaspar von Braun, Geoff Bryden +6

We present a variability analysis of the early-release first quarter of data publicly released by the Kepler project. Using the stellar parameters from the Kepler Input Catalog, we…

astro-ph.EP2010★ 217 cited

Near-Infrared Spectroscopy of the Extrasolar Planet HR 8799 b

Brendan P. Bowler, Michael C. Liu, Trent J. Dupuy +1

[Abridged] We present 2.12-2.23 um high contrast integral field spectroscopy of the extrasolar planet HR 8799 b. Our observations were obtained with OSIRIS on the Keck II telescope…

astro-ph.EP2010★ 154 cited

Detecting Oceans on Extrasolar Planets Using the Glint Effect

Tyler D. Robinson, Victoria S. Meadows, David Crisp

Glint, the specular reflection of sunlight off Earth's oceans, may reveal the presence of oceans on an extrasolar planet. As an Earth-like planet nears crescent phases, the size of…

astro-ph.EP2010★ 112 cited

Measuring the mass of solar system planets using pulsar timing

D. J. Champion, G. B. Hobbs, R. N. Manchester +19

High-precision pulsar timing relies on a solar-system ephemeris in order to convert times of arrival (TOAs) of pulses measured at an observatory to the solar system barycenter. Any…

astro-ph.EP2010★ 255 cited

Modeling Kepler transit light curves as false positives: Rejection of blend scenarios for Kepler-9, and validation of Kepler-9d, a super-Earth-size planet in a multiple system

Guillermo Torres, François Fressin, Natalie M. Batalha +26

Light curves from the Kepler Mission contain valuable information on the nature of the phenomena producing the transit-like signals. To assist in exploring the possibility that the…

astro-ph.EP2010★ 24 cited

First results on Martian carbon monoxide from Herschel/HIFI observations

P. Hartogh, M. I. Błęcka, C. Jarchow +48

We report on the initial analysis of Herschel/HIFI carbon monoxide (CO) observations of the Martian atmosphere performed between 11 and 16 April 2010. We selected the (7-6) rotatio…

astro-ph.EP2010★ 80 cited

Herschel/HIFI observations of Mars: first detection of O_2 at submillimetre wavelengths and upper limits on HCl and H_2O_2

P. Hartogh, C. Jarchow, E. Lellouch +47

We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H_2O_2), and molecular oxygen (O_2) in the Martian atmosphere performe…

astro-ph.EP2010★ 355 cited

Characteristics of Kepler Planetary Candidates Based on the First Data Set: The Majority are Found to be Neptune-Size and Smaller

William J. Borucki

In the spring of 2009, the Kepler Mission commenced high-precision photometry on nearly 156,000 stars to determine the frequency and characteristics of small exoplanets, conduct a…

astro-ph.EP2010★ 6 cited

New Parameters and Transit Timing Studies for OGLE2-TR-L9 b

M. Lendl, C. Afonso, J. Koppenhoefer +4

Context: Repeated observations of exoplanet transits allow us to refine the planetary parameters and probe them for any time dependent variations. In particular deviations of the p…

astro-ph.EP2010★ 159 cited

From planetesimals to terrestrial planets: N-body simulations including the effects of nebular gas and giant planets

Ryuji Morishima, Joachim Stadel, Ben Moore

We present results from a suite of N-body simulations that follow the accretion history of the terrestrial planets using a new parallel treecode that we have developed. We initiall…

astro-ph.EP2010★ 53 cited

Methane, ammonia, and their irradiation products at the surface of an intermediate-size KBO? A portrait of Plutino (90482) Orcus

Audrey Delsanti, Frédéric Merlin, Aurélie Guilbert +3

Orcus is an intermediate-size 1000km-scale Kuiper Belt Object in 3:2 mean-motion resonance with Neptune, in an orbit very similar to that of Pluto. We present visible and near-infr…

astro-ph.EP2010★ 71 cited

Locating the planetesimals belts in the multiple-planet systems HD 128311, HD 202206, HD 82943 and HR 8799

Amaya Moro-Martin, Renu Malhotra, Geoffrey Bryden +4

In addition to the Sun, six other stars are known to harbor multiple planets and debris disks: HD 69830, HD 38529, HD 128311, HD 202206, HD 82943 and HR 8799. In this paper we set…

astro-ph.EP2010★ 100 cited

Uranus and Neptune: Shape and Rotation

Ravit Helled, John D. Anderson, Gerald Schubert

Both Uranus and Neptune are thought to have strong zonal winds with velocities of several hundred meters per second. These wind velocities, however, assume solid-body rotation peri…