Showing 2009 · astro-ph.EPShow all

27 papers · 2 filters

astro-ph.EP2009★ 130 cited

Kepler-7b: A Transiting Planet with Unusually Low Density

David W. Latham, William J. Borucki, David G. Koch +18

We report the discovery and confirmation of Kepler-7b, a transiting planet with unusually low density. The mass is less than half that of Jupiter, Mp = 0.43 Mj, but the radius is f…

astro-ph.EP2009★ 7 cited

Albedo heterogeneity on the surface of (1943) Anteros

Joseph Masiero

We have investigated the effect of rotation on the polarization of scattered light for the near-Earth asteroid (1943) Anteros using the Dual Beam Imaging Polarimeter on the Univers…

astro-ph.EP2009★ 33 cited

Formation and evolution of planetary systems: the impact of high angular resolution optical techniques

Olivier Absil, Dimitri Mawet

The direct images of giant extrasolar planets recently obtained around several main sequence stars represent a major step in the study of planetary systems. These high-dynamic rang…

astro-ph.EP2009

Checking Stability Of Planet Orbits In Multiple-planet Systems

F. Malbet, J. Catanzarite, M. Shao +1

The SIM Lite mission will undertake several planet surveys. One of them, the Deep Planet Survey, is designed to detect Earth-mass exoplanets in the habitable zones of nearby main s…

astro-ph.EP2009★ 34 cited

The Architecture of the Cassini Division

M. M. Hedman, P. D. Nicholson, K. H. Baines +6

The Cassini Division in Saturn's rings contains a series of eight named gaps, three of which contain dense ringlets. Observations of stellar occultations by the Visual and Infrared…

astro-ph.EP2009★ 114 cited

Dust Transport in Protostellar Disks Through Turbulence and Settling

N. J. Turner, A. Carballido, T. Sano

We apply ionization balance and MHD calculations to investigate whether magnetic activity moderated by recombination on dust can account for the mass accretion rates and the mid-in…

astro-ph.EP2009★ 80 cited

The far future of exoplanet direct characterization

Jean Schneider, Alain Leger, Malcolm Fridlund +17

In this outlook we describe what could be the next steps of the direct characterization of habitable exoplanets after first the medium and large mission projects and investigate th…

astro-ph.EP2009★ 19 cited

Spitzer observations of the asteroid-comet transition object and potential spacecraft target 107P (4015) Wilson-Harrington

J. Licandro, H. Campins, M. Kelley +15

Context. Near-Earth asteroid-comet transition object 107P/ (4015) Wilson-Harrington is a possible target of the joint European Space Agency (ESA) and Japanese Aerospace Exploration…

astro-ph.EP2009★ 260 cited

The Debris Disk Around HR 8799

K. Y. L. Su, G. H. Rieke, K. R. Stapelfeldt +6

We have obtained a full suite of Spitzer observations to characterize the debris disk around HR 8799 and to explore how its properties are related to the recently discovered set of…

astro-ph.EP2009★ 106 cited

Water in HD 209458b's atmosphere from 3.6 - 8 microns IRAC photometric observations in primary transit

J. P. Beaulieu, D. M. Kipping, V. Batista +15

The hot Jupiter HD 209458b was observed during primary transit at 3.6, 4.5, 5.8 and 8.0 microns using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We detail her…

astro-ph.EP2009★ 287 cited

Water, Methane, and Carbon Dioxide Present in the Dayside Spectrum of the Exoplanet HD 209458b

M. Swain, G. Tinetti, G. Vasisht +11

Using the NICMOS instrument on the Hubble Space Telescope, we have measured the dayside spectrum of HD 209458b between 1.5--2.5 microns. The emergent spectrum is dominated by featu…

astro-ph.EP2009★ 39 cited

Three years of Ulysses dust data: 2005 to 2007

Harald Krüger, V. Dikarev, B. Anweiler +16

The Ulysses spacecraft has been orbiting the Sun on a highly inclined ellipse since it encountered Jupiter in February 1992. Since then it made almost three revolutions about the S…

astro-ph.EP2009★ 14 cited

Galileo dust data from the jovian system: 2000 to 2003

Harald Krüger, D. Bindschadler, S. F. Dermott +17

The Galileo spacecraft was orbiting Jupiter between Dec 1995 and Sep 2003. The Galileo dust detector monitored the jovian dust environment between about 2 and 370 R_J (jovian radiu…

astro-ph.EP2009★ 24 cited

Jupiter and Saturn Rotation Periods

Ravit Helled, Gerald Schubert, John D. Anderson

Anderson & Schubert (2007, Science,317,1384) proposed that Saturn's rotation period can be ascertained by minimizing the dynamic heights of the 100 mbar isosurface with respect to…

astro-ph.EP2009★ 100 cited

Global circulation as the main source of cloud activity on Titan

Sébastien Rodriguez, Stéphane Le Mouélic, Pascal Rannou +11

Clouds on Titan result from the condensation of methane and ethane and, as on other planets, are primarily structured by circulation of the atmosphere. At present, cloud activity m…

astro-ph.EP2009★ 58 cited

An Ultracool Star's Candidate Planet

Steven H. Pravdo, Stuart B. Shaklan

We report here the discovery of the first planet around an ultracool dwarf star. It is also the first extrasolar giant planet (EGP) astrometrically discovered around a main-sequenc…

astro-ph.EP2009★ 90 cited

Deciphering Spectral Fingerprints of Habitable Extrasolar Planets

L. Kaltenegger, F. Selsis, M. Fridlund +2

In this paper we discuss how we can read a planets spectrum to assess its habitability and search for the signatures of a biosphere. After a decade rich in giant exoplanet detectio…

astro-ph.EP2009★ 21 cited

Stellar Aspects of Habitability: Characterizing Target Stars for Terrestrial Planet Search Missions

L. Kaltenegger, C. Eiroa, I. Ribas +7

In this paper we present and discuss the criteria for selecting potential target stars suitable for the search for Earth like planets, with a special emphasis on the stellar aspect…

astro-ph.EP2009★ 63 cited

Spitzer/IRAC Limits to Planetary Companions of Fomalhaut and epsilon Eridani

M. Marengo, K. Stapelfeldt, M. W. Werner +5

Fomalhaut and epsilon Eridani are two young, nearby stars that possess extended debris disks whose structures suggest the presence of perturbing planetary objects. With its high se…

astro-ph.EP2009★ 45 cited

Detection of Earth-impacting asteroids with the next generation all-sky surveys

Peter Vereš, Robert Jedicke, Richard Wainscoat +5

We have performed a simulation of a next generation sky survey's (Pan-STARRS 1) efficiency for detecting Earth-impacting asteroids. The steady-state sky-plane distribution of the i…

astro-ph.EP2009★ 4 cited

Astrometric Detection of Earthlike Planets

Michael Shao, Geoff Marcy, Joseph H. Catanzarite +12

Astrometry can detect rocky planets in a broad range of masses and orbital distances and measure their masses and three-dimensional orbital parameters, including eccentricity and i…

astro-ph.EP2009★ 36 cited

Detectability of Terrestrial Planets in Multi-Planet Systems: Preliminary Report

Wesley A. Traub, Charles Beichman, Andrew F. Boden +21

We ask if Earth-like planets (terrestrial mass and habitable-zone orbit) can be detected in multi-planet systems, using astrometric and radial velocity observations. We report here…

astro-ph.EP2009★ 8 cited

Magnetospheric Emission from Extrasolar Planets

J. Lazio, T. Bastian, G. Bryden +12

The magnetospheric emissions from extrasolar planets represent a science frontier for the next decade. All of the solar system giant planets and the Earth produce radio emissions a…

astro-ph.EP2009

No Planet Left Behind: Investigating Planetary Diversity and Architecture with SIM Lite

S. R. Kulkarni, H. E. Schlichting, B. M. S. Hansen +1

The evidence is mounting that star formation necessarily involves planet formation. We clearly have a vested interest in finding other Earths but a true understanding of planet for…