Results 41 to 50 of about 3,153 (136)

Migration of planets in circumbinary discs [PDF]

Astronomy & Astrophysics, 2018
Aims. The discovery of planets in close orbits around binary stars raises questions about their formation. It is believed that these planets formed in the outer regions of the disc and then migrated through planet-disc interaction to their current location.
Wilhelm Kley, Daniel Thun
openaire   +4 more sources

HD 143006: circumbinary planet or misaligned disc? [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT Misalignments within protoplanetary discs are now commonly observed, and features such as shadows in scattered light images indicate departure from a co-planar geometry. VLT/SPHERE (Very Large Telescope/Spectro-Polarimetric High-​contrast Exoplanet REsearch) observations of the disc around HD 143006 show a large-scale asymmetry ...
Giulia Ballabio, Giulia Ballabio, Rebecca Nealon, Rebecca Nealon, Christophe Pinte, Christophe Pinte, Richard Alexander, Daniel J. Price, Nicolás Cuello   +8 more
openaire   +5 more sources

Near-infrared Accretion Signatures from the Circumbinary Planetary-mass Companion Delorme 1 (AB)b

The Astrophysical Journal Letters, 2022
Accretion signatures from bound brown dwarf and protoplanetary companions provide evidence for ongoing planet formation, and accreting substellar objects have enabled new avenues to study the astrophysical mechanisms controlling the formation and ...
S. K. Betti, K. B. Follette, K. Ward-Duong, Y. Aoyama, G.-D. Marleau, J. Bary, C. Robinson, M. Janson, W. Balmer, G. Chauvin, P. Palma-Bifani   +10 more
doaj   +1 more source

AN ANALYTIC THEORY FOR THE ORBITS OF CIRCUMBINARY PLANETS [PDF]

The Astrophysical Journal, 2013
21 pages, including 8 figures; accepted for publication in ...
Lee, MH, Leung, CK
openaire   +5 more sources

FORMATION OF CIRCUMBINARY PLANETS IN A DEAD ZONE [PDF]

The Astrophysical Journal, 2013
Circumbinary planets have been observed at orbital radii where binary perturbations may have significant effects on the gas disk structure, on planetesimal velocity dispersion, and on the coupling between turbulence and planetesimals. Here, we note that the impact of all of these effects on planet formation is qualitatively altered if the circumbinary ...
Philip J. Armitage, Rebecca G. Martin, Richard Alexander   +2 more
openaire   +3 more sources

Geometrical and Physical Properties of Circumbinary Discs in Eccentric Stellar Binaries [PDF]

, 2008
In a previous work (Pichardo et al. 2005), we studied stable configurations for circumstellar discs in eccentric binary systems. We searched for "invariant loops": closed curves (analogous to stable periodic orbits in time-independent potentials) that ...
Akeson, Aumann, Barbara Pichardo, Barrado y Navascues, Bate, Bate, Beust, Boden, Bodenheimer, Bonnell, Carpenter, Close, Deller, Dent, Dermott, Duchêne, Duchêne, Duvert, Elias, Els, Fischer, Freistetter, Goldstein, Guilloteau, Haghighipour, Hartigan, Hatzes, Hioki, Holland, Holman, Itoh, Jensen, Kalas, Kawabe, Koerner, Krist, Kuchner, Lada, Lim, Linda S. Sparke, Looney, Luis A. Aguilar, Lyne, Maciejewski, Maciejewski, Marsh, Mathieu, Mathieu, Mathieu, Mathieu, McCabe, Pfahl, Pichardo, Prato, Quillen, Quintana, Raghavan, Roddier, Rudak, Schneider, Sigurdsson, Sigurdsson, Silber, Soderblom, Stapelfeldt, Telesco, Tokovinin, Torres, Trilling, Weaver, White, Wyatt   +71 more
core   +1 more source

Habitability Properties of Circumbinary Planets [PDF]

The Astronomical Journal, 2017
Abstract It is shown that several habitability conditions (in fact, at least seven such conditions) appear to be fulfilled automatically by circumbinary planets of main-sequence stars (CBP-MS), whereas on Earth, these conditions are fulfilled only by chance.
openaire   +3 more sources

Equilibrium Points and Related Periodic Motions in the Restricted Three‐Body Problem with Angular Velocity and Radiation Effects

Advances in Astronomy, Volume 2015, Issue 1, 2015., 2015
The paper deals with a modification of the restricted three‐body problem in which the angular velocity variation is considered in the case where the primaries are sources of radiation. In particular, the existence and stability of its equilibrium points in the plane of motion of the primaries are studied. We find that this problem admits the well‐known
E. A. Perdios, V. S. Kalantonis, A. E. Perdiou, A. A. Nikaki, Zdzislaw E. Musielak   +4 more
wiley   +1 more source

Detecting circumbinary planets using eclipse timing of binary stars - numerical simulations [PDF]

, 2010
The presence of a body in an orbit around a close eclipsing binary star manifests itself through the light time effect influencing the observed times of eclipses as the close binary and the circumbinary companion both move around the common centre of ...
Alonso, Auvergne, Cumming, Deeg, Dvorak, Dvorak, Garrido, Holman, Koch, Lee, M. Konacki, Milotti, Milotti, Moré, Nelson, P. Sybilski, Paczyński, Qian, Qian, S. Kozłowski   +19 more
core   +1 more source

Dusty Blue Supergiants: News from High‐Angular Resolution Observations

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
An overview is presented of the recent advances in understanding the B[e] phenomenon among blue supergiant stars in light of high‐angular resolution observations and with an emphasis on the results obtained by means of long baseline optical stellar interferometry.
W. J. de Wit, R. D. Oudmaijer, J. S. Vink, Lydia Cidale   +3 more
wiley   +1 more source