Results 21 to 30 of about 356,444 (106)

No variations in transit times for Qatar-1 b

open access: yes, 2015
The transiting hot Jupiter planet Qatar-1 b was presented to exhibit variations in transit times that could be of perturbative nature. A hot Jupiter with a planetary companion on a nearby orbit would constitute an unprecedented planetary configuration ...
Aceituno, F. J.   +13 more
core   +1 more source

Searching for Binary Stars in Planetary Nebulae Using the ISIS Image Subtraction Software [PDF]

open access: yes, 2011
We explored the theory that binary central stars of planetary nebulae may be contributing factor in the formation of planetary nebulae. We searched for this photometric variability in central stars of planetary nebulae because consistent periodic ...
Schwartz, Samantha
core   +2 more sources

The scattering of small bodies in planetary systems: constraints on the possible orbits of cometary material

open access: yes, 2011
The scattering of small bodies by planets is an important dynamical process in planetary systems. We present an analytical model to describe this process using the simplifying assumption that each particle's dynamics is dominated by a single planet at a ...
A. Bonsor   +62 more
core   +1 more source

Giant Planet Companion to 2MASSW J1207334-393254

open access: yes, 2005
We report new VLT/NACO imaging observations of the young, nearby brown dwarf 2MASSW J1207334-393254 and its suggested planetary mass companion (2M1207 b).
A.-M. Lagrange   +40 more
core   +3 more sources

Resonant periodic orbits in the exoplanetary systems

open access: yes, 2013
The planetary dynamics of $4/3$, $3/2$, $5/2$, $3/1$ and $4/1$ mean motion resonances is studied by using the model of the general three body problem in a rotating frame and by determining families of periodic orbits for each resonance.
Antoniadou, K. I., Voyatzis, G.
core   +1 more source

The complex planetary synchronization structure of the solar system

open access: yes, 2014
The complex planetary synchronization structure of the solar system, which since Pythagoras of Samos (ca. 570-495 BC) is known as the music of the spheres, is briefly reviewed from the Renaissance up to contemporary research.
Scafetta, Nicola
core   +1 more source

Refined Properties of the HD 130322 Planetary System [PDF]

open access: yes, 2015
Exoplanetary systems closest to the Sun, with the brightest host stars, provide the most favorable opportunities for characterization studies of the host star and their planet(s).
Boyajian, Tabetha   +7 more
core   +3 more sources

SOPHIE velocimetry of Kepler transit candidates. V. The three hot Jupiters KOI-135b, KOI-204b and KOI-203b (alias Kepler-17b)

open access: yes, 2011
We report the discovery of two new transiting hot Jupiters, KOI-135b and KOI-204b, that were previously identified as planetary candidates by Borucki et al. 2011, and, independently of the Kepler team, confirm the planetary nature of Kepler-17b, recently
A. S. Bonomo   +48 more
core   +6 more sources

Planetary nebula progenitors that swallow binary systems

open access: yes, 2015
I propose that some irregular `messy' planetary nebulae owe their morphologies to triple-stellar evolution where tight binary systems evolve inside and/or on the outskirts the envelope of asymptotic giant branch (AGB) stars.
Soker, Noam
core   +1 more source

Refined stellar, orbital and planetary parameters of the eccentric HAT-P-2 planetary system [PDF]

open access: yes, 2009
We present refined parameters for the extrasolar planetary system HAT-P-2 (also known as HD 147506), based on new radial velocity and photometric data. HAT-P-2b is a transiting extrasolar planet that exhibits an eccentric orbit.
Andrew W. Howard   +64 more
core   +3 more sources

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