Results 81 to 90 of about 14,838,227 (209)

exoplanet-dev/jaxoplanet: Astronomical time series analysis with JAX

open access: yes
<h2>What's Changed</h2> <ul> <li>Updating and applying pre-commit by @dfm in https://github.com/exoplanet-dev/jaxoplanet/pull/16</li> <li>Adding interface for arbitrary order limb darkening by @dfm in https://github ...
Degen, David   +6 more
core   +1 more source

A radiometric model for demonstration of exoplanets detection by the transit method

open access: yesPhysics Education
Abstract This work describes an exact radiometric model for experimental demonstrators of the detection of exoplanets by the transit method. This model generalises the calculation of the depth of occultation from the standard transit method to the case of a finite size demonstrator apparatus.
T M Seixas, M A Salgueiro da Silva
openaire   +1 more source

The Astrometric Resoeccentric Degeneracy: Eccentric Single Planets Mimic 2:1 Resonant Planet Pairs in Astrometry

open access: yesThe Astrophysical Journal Letters
Detections of long-period giant exoplanets will expand dramatically with Gaia Data Release 4, but interpreting these signals will require care. We derive the astrometric resoeccentric degeneracy: an astrometric analogue of the well-known radial velocity ...
Daniel A. Yahalomi   +6 more
doaj   +1 more source

The GPU phase folding and deep learning method for detecting exoplanet transits

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT This paper presents GPFC, a novel Graphics Processing Unit (GPU) Phase Folding and Convolutional Neural Network (CNN) system to detect exoplanets using the transit method. We devise a fast-folding algorithm parallelized on a GPU to amplify low signal-to-noise ratio transit signals, allowing a search at high precision and speed ...
Kaitlyn Wang   +4 more
openaire   +3 more sources

TESS Giants Transiting Giants. VI. Newly Discovered Hot Jupiters Provide Evidence for Efficient Obliquity Damping after the Main Sequence

open access: yesThe Astronomical Journal
The degree of alignment between a star’s spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution.
Nicholas Saunders   +55 more
doaj   +1 more source

Exoplanet Detection : A Detailed Analysis [PDF]

open access: yes
The exoplanet detection is the most exciting and challenging field of astronomy. The discovery of many exoplanets has revolutionized our understanding of the formation and evolution of planetary systems and has showed new ways to search for extra ...
Kaushik, Mahima   +2 more
core  

Direct Optical Detection of Microorganisms in Exoplanet Atmospheres: Methods [PDF]

open access: yes, 2016
The purpose of this project is to develop an optical method for detecting the presence of life, specifically microorganisms, in the atmosphere of an exoplanet.
Eads, Ryker   +4 more
core   +1 more source

Gaia-4b and 5b: Radial Velocity Confirmation of Gaia Astrometric Orbital Solutions Reveal a Massive Planet and a Brown Dwarf Orbiting Low-mass Stars

open access: yesThe Astronomical Journal
Gaia astrometry of nearby stars is precise enough to detect the tiny displacements induced by substellar companions, but radial velocity (RV) data are needed for definitive confirmation.
Gudmundur Stefánsson   +33 more
doaj   +1 more source

ExoMOD. I. A Forward Model for the Orbital Architecture of Kepler Multiplanet Systems

open access: yesThe Astrophysical Journal
Transit observations only detect planets with favorable, near edge-on orientation of orbits as seen by a distant observer, which leaves much freedom for various interpretations in terms of the underlying planetary system architecture.
David Nesvorný   +3 more
doaj   +1 more source

Abiotic ozone and oxygen in atmospheres similar to prebiotic earth [PDF]

open access: yes, 2014
The search for life on planets outside our solar system will use spectroscopic identification of atmospheric biosignatures. The most robust remotely detectable potential biosignature is considered to be the detection of oxygen (O2) or ozone (O3 ...
Domagal-Goldman, Shawn D.   +10 more
core   +1 more source

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