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Related papers: BEBOP II: Sensitivity to sub-Saturn circumbinary p…

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We re-determine planetary occurrences around M dwarfs using 20 years of observations from HARPS on 197 targets. The first aim of this study is to propose more precise occurrence rates using the large volume of the sample but also variations…

Future generations of precise radial velocity (RV) surveys aim to achieve sensitivity sufficient to detect Earth mass planets orbiting in their stars' habitable zones. A major obstacle to this goal is astrophysical radial velocity noise…

Earth and Planetary Astrophysics · Physics 2016-04-27 Andrew Vanderburg , Peter Plavchan , John Asher Johnson , David R. Ciardi , Jonathan Swift , Stephen R. Kane

The feasibility of using data from the NASA STEREO mission for variable star and asteroseismology studies has been examined. A data analysis pipeline has been developed that is able to apply selected algorithms to the entire database of…

Solar and Stellar Astrophysics · Physics 2015-05-27 K. T. Wraight , Glenn J. White , D. Bewsher , A. J. Norton

In close eclipsing binaries, measurements of the variations in binary's eclipse timing may be used to infer information about the existence of circumbinary objects. To determine the possibility of the detection of such variations with CoRoT…

Earth and Planetary Astrophysics · Physics 2015-05-27 R. Schwarz , N. Haghighipour , S. Eggl , E. Pilat-Lohinger , B. Funk

We place the first constraints on binary planets and exomoons from Doppler monitoring of directly imaged exoplanets. We model radial velocity observations of HR 8799 b, c, and d from Ruffio et al. (2021) and determine upper limits on the…

Earth and Planetary Astrophysics · Physics 2021-11-24 Andrew Vanderburg , Joseph E. Rodriguez

Although the sample of exoplanets in binaries has been greatly expanded, the sample heterogeneity and observational bias are obstacles toward a clear figure of exoplanet demographics in the binary environment. To overcome the obstacles, we…

Earth and Planetary Astrophysics · Physics 2021-12-08 Xiang-Ning Su , Ji-Wei Xie , Ji-Lin Zhou , Philippe Thebault

Of the known transiting extra-solar planets, a few have been detected through photometric follow-up observations of radial velocity planets. Perhaps the best known of these is the transiting exoplanet HD 209458b. For hot Jupiters (periods…

Astrophysics · Physics 2009-06-23 Stephen R. Kane

Planets that orbit only one of the stars in stellar binary systems (i.e., circumstellar) are dynamically constrained to a limited range of orbital parameters and thus understanding conditions on their stability is of great importance in…

Earth and Planetary Astrophysics · Physics 2020-02-11 Billy Quarles , Gongjie Li , Veselin Kostov , Nader Haghighipour

The detection of exoplanets through direct imaging has produced numerous new positive identifications in recent years. The technique is biased towards planets at wide separations due to the difficulty in removing the stellar signature at…

Earth and Planetary Astrophysics · Physics 2015-06-12 Stephen R. Kane

We have detected low-amplitude radial-velocity variations in two stars, USNO-B1.0 1219-0005465 (GSC 02265-00107 = WASP-1) and USNO-B1.0 0964-0543604 (GSC 00522-01199 = WASP-2). Both stars were identified as being likely host stars of…

CONTEXT. It is theoretically possible for rings to have formed around extrasolar planets in a similar way to that in which they formed around the giant planets in our solar system. However, no such rings have been detected to date. AIMS: We…

Earth and Planetary Astrophysics · Physics 2017-12-27 B. Akinsanmi , M. Oshagh , N. C. Santos , S. C. C. Barros

With about 700 confirmed extrasolar planets, it is time to move beyond discovery and towards characterization. Perhaps the most basic parameter of an extrasolar planet is its mass; however, this is very difficult to determine if the planet…

Earth and Planetary Astrophysics · Physics 2015-06-16 Kevin Gullikson , Michael Endl

The Wide Angle Search for Planets (WASP) survey used transit photometry to discover nearly 200 gas-giant exoplanets and derive their planetary and stellar parameters. Reliable determination of the planetary density depends on accurate…

Earth and Planetary Astrophysics · Physics 2024-09-05 Tanvi Goswamy , Andrew Collier Cameron , Thomas G. Wilson

Radial velocity perturbations induced by stellar surface inhomogeneities including spots, plages and granules currently limit the detection of Earth-twins using Doppler spectroscopy. Such stellar noise is poorly understood for stars other…

Transiting planets manifest themselves by a periodic dimming of their host star by a fixed amount. On the other hand, light curves of transiting circumbinary (CB) planets are expected to be neither periodic nor to have a single depth while…

Astrophysics · Physics 2013-08-13 A. Ofir

We describe the Survey for Pulsars and Extragalactic Radio Bursts (SUPERB), an ongoing pulsar and fast transient survey using the Parkes radio telescope. SUPERB involves real-time acceleration searches for pulsars and single-pulse searches…

Recent surveys indicate that planets in binary systems are more abundant than previously thought, which is in agreement with theoretical work on disc dynamics and planet formation in binaries. In order to measure the abundance and physical…

Earth and Planetary Astrophysics · Physics 2020-11-11 J. Hagelberg , N. Engler , C. Fontanive , S. Daemgen , S. P. Quanz , J. Kühn , M. Reggiani , M. Meyer , R. Jayawardhana , V. Kostov

Future direct imaging missions such as HabEx and LUVOIR aim to catalog and characterize Earth-mass analogs around nearby stars. The exoplanet yield of these missions will be dependent on the frequency of Earth-like planets, and potentially…

Searches for planets in close binary systems explore the degree to which stellar multiplicity inhibits or promotes planet formation. There is a degeneracy between planet formation models when only systems with single stars are…

Astrophysics · Physics 2007-05-23 Matthew W. Muterspaugh , Maciej Konacki , Benjamin F. Lane , Eric Pfahl