Results 71 to 80 of about 1,764,603 (268)
The Astronomical Journal, 2023 The TESS mission produces a large amount of time series data, only a small fraction of which contain detectable exoplanetary transit signals.
Evan Tey +10 more
doaj +1 more source
The Search for Stellar Companions to Exoplanet Host Stars Using the CHARA Array
, 2008 Most exoplanets have been discovered via radial velocity studies, which are inherently insensitive to orbital inclination. Interferometric observations will show evidence of a stellar companion if it sufficiently bright, regardless of the inclination ...
Ellyn K. Baines +10 more
core +1 more source
Starspot Jitter in Photometry, Astrometry and Radial Velocity Measurements [PDF]
, 2009 Analytical relations are derived for the amplitude of astrometric, photometric and radial velocity perturbations caused by a single rotating spot. The relative power of the star spot jitter is estimated and compared with the available data for $\kappa^1$
Batalha +19 more
core +5 more sources
Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59
Astronomische Nachrichten, EarlyView.ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz +2 more
wiley +1 more source
An Eccentric Sub-Neptune Moving Into the Evaporation Desert
The Astrophysical Journal LettersThough missions such as Kepler, K2, and TESS have discovered >2000 sub-Neptune and Neptunian planets, there is a dearth of such planets at close-in ( P ≲ 3 days) orbits. This feature, called the Neptune desert or the evaporation desert, is believed to be
Sydney A. Jenkins +33 more
doaj +1 more source
An Approach for Exoplanet Detection using Machine Learning By IJISRT
International Journal of Innovative Science and Research TechnologyTraditionally, astronomer and astrophysicist teams were the only ones capable of identifying planets. They used techniques and equipment that are only available to persons with years of formal education and training.
Roshan Daniel +3 more
semanticscholar +1 more source
Commissioning an Inexpensive Off‐The‐Shelf Spectrograph for Radial‐Velocity Studies
Astronomische Nachrichten, EarlyView.ABSTRACT We present a way to set up an inexpensive out of the shelf spectrograph at a local observatory. Stability and resolution of the spectrograph are high enough for radial velocity determination of binary stars or determination of stellar characteristics. Even some exoplanets might be detectable via the radial velocity method.
Lukas Stock, Andreas Schrimpf
wiley +1 more source
The Astronomical JournalThe detection and characterization of habitable planets around nearby stars persist as some of the foremost objectives in contemporary astrophysics.
Chunhui Bao +6 more
doaj +1 more source
Constraining planet occurrence around ultracool dwarfs observed by K2 [PDF]
, 2019 An undergrad mentee presented her research at the meeting. I am a co-author of the presentation. The abstract is available on ADS: https://ui.adsabs.harvard.edu/abs/2019AAS...23314019S/abstractThough we expect many planets around ultracool dwarfs, few ...
Muirhead, Philip +2 more
core
STIM map: detection map for exoplanets imaging beyond asymptotic Gaussian residual speckle noise [PDF]
, 2019 Direct imaging of exoplanets is a challenging task as it requires to reach a high contrast at very close separation to the star. Today, the main limitation in the high-contrast images is the quasi-static speckles that are created by residual instrumental
Absil, Olivier +4 more
core +2 more sources