Results 31 to 40 of about 2,057,964 (253)

A new method for finding nearby white dwarfs exoplanets and detecting biosignatures

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT We demonstrate that the James Webb Space Telescope (JWST) can detect infrared (IR) excess from the blended light spectral energy distribution of spatially unresolved terrestrial exoplanets orbiting nearby white dwarfs. We find that JWST is capable of detecting warm (habitable-zone; Teq = 287 K) Earths or super-Earths and hot ...
Mary Anne Limbach, Andrew Vanderburg, Kevin B Stevenson, Simon Blouin, Caroline Morley, Jacob Lustig-Yaeger, Melinda Soares-Furtado, Markus Janson   +7 more
openaire   +2 more sources

Revised Properties and Dynamical History for the HD 17156 System

The Astronomical Journal, 2023
From the thousands of known exoplanets, those that transit bright host stars provide the greatest accessibility toward detailed system characterization.
Stephen R. Kane, Michelle L. Hill, Paul A. Dalba, Tara Fetherolf, Gregory W. Henry, Sergio B. Fajardo-Acosta, Crystal L. Gnilka, Andrew W. Howard, Steve B. Howell, Howard Isaacson   +9 more
doaj   +1 more source

Validation of the Exoplanet Kepler-21b using PAVO/CHARA Long-Baseline Interferometry [PDF]

, 2012
We present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the PAVO beam combiner at the CHARA Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 ...
Antoine Mérand, Baines, Baraffe, Batalha, Bessell, Borucki, Bryson, Christopher D. Farrington, Claret, Cochran, Cutri, Daniel Huber, Derekas, ESA, Fabrycky, Ford, Fressin, Gail H. Schaefer, Hanbury Brown, Harold A. McAlister, Howell, Howell, Ireland, Judit Sturmann, Kervella, Koch, Laszlo Sturmann, Latham, Michael J. Ireland, Monnier, Morton, Nils H. Turner, P. J. Goldfinger, Peter G. Tuthill, Ricker, Schmidt-Kaler, Shrutskie, Skilling, Steffen, Steve B. Howell, ten Brummelaar, ten Brummelaar, ten Brummelaar, Theo A. ten Brummelaar, Timothy R. Bedding, Timothy R. White, Torres, van Belle, van Belle, van Leeuwen, Vicente Maestro, von Braun   +51 more
core   +2 more sources

An alternating minimization algorithm with trajectory for direct exoplanet detection. The AMAT algorithm [PDF]

Astronomy & Astrophysics
Effective image post-processing algorithms are vital for the successful direct imaging of exoplanets. Standard point spread function (PSF) subtraction methods use techniques based on a low-rank approximation to separate the rotating planet signal from ...
Hazan Daglayan, Simon Vary, O. Absil, F. Cantalloube, V. Christiaens, Nicolas Gillis, L. Jacques, V. Leplat, P.-A. Absil   +8 more
semanticscholar   +1 more source

Rossiter-McLaughlin detection of the 9-month period transiting exoplanet HIP41378 d [PDF]

Astronomy & Astrophysics, 2022
The Rossiter-McLaughlin (RM) effect is a method that allows us to measure the orbital obliquity of planets, which is an important constraint that has been used to understand the formation and migration mechanisms of planets, especially for hot Jupiters ...
S. Grouffal, A. Santerne, V. Bourrier, X. Dumusque, A. Triaud, L. Malavolta, V. Kunovac, David J Armstrong, O. Attia, S. Barros, I. Boisse, M. Deleuil, O. Demangeon, C. Dressing, P. Figueira, J. Lillo-Box, A. Mortier, D. Nardiello, N. Santos, S. Sousa   +19 more
semanticscholar   +1 more source

Detection of Exoplanets based on the Transit Method

Highlights in Science, Engineering and Technology, 2023
Exoplanets are planets orbiting a star other than the Sun. These exoplanets may exist in many different forms, such as a hot Jupiter and super earth. Detecting is the first step to further studying the properties of these exoplanets. In this paper, based on data of star Qatar-1 gathered from July 22nd 2022, a light flux curve is developed during the ...
openaire   +1 more source

Machine Learning for Exoplanet Detection in High-Contrast Spectroscopy: Revealing Exoplanets by Leveraging Hidden Molecular Signatures in Cross-Correlated Spectra with Convolutional Neural Networks [PDF]

Astronomy & Astrophysics
The new generation of observatories and instruments (VLT/ERIS, JWST, ELT) motivate the development of robust methods to detect and characterise faint and close-in exoplanets.
E. Garvin, M. Bonse, J. Hayoz, G. Cugno, Jonas Spiller, P. Patapis, D. P. D. D. L. Roche, Rakesh Nath-Ranga, O. Absil, N. Meinshausen, S. Quanz   +10 more
semanticscholar   +1 more source

Logistic regression to boost exoplanet detection performances [PDF]

Monthly notices of the Royal Astronomical Society
Direct imaging of exoplanets requires to separate the background noise from the exoplanet signals. Statistical methods have been recently proposed to avoid subtracting any signal of interest as opposed to initial self-subtracting methods based on ...
Hadrien Cambazard, N. Catusse, A. Chomez, A. Lagrange   +3 more
semanticscholar   +1 more source

Exoplanet Detection using Machine Learning [PDF]

arXiv.org, 2020
We introduce a new machine learning based technique to detect exoplanets using the transit method. Machine learning and deep learning techniques have proven to be broadly applicable in various scientific research areas.
Abhishek Malik, B. Moster, C. Obermeier
semanticscholar   +1 more source

Detecting the Signatures of Uranus and Neptune [PDF]

, 2011
With more than 15 years since the the first radial velocity discovery of a planet orbiting a Sun-like star, the time baseline for radial velocity surveys is now extending out beyond the orbit of Jupiter analogs.
Bakos, Barge, Basri, Beichman, Benvenuto, Boisse, Borucki, Boss, Boss, Cahoy, Charbonneau, Colón, Cumming, Dodson-Robinson, Dyudina, Eisler, Eisler, Ford, Fortney, Gould, Ida, Kane, Kane, Kane, Kane, Kennedy, Kennedy, Lagrange, Levison, Li, Lomb, Makarov, Marois, Marois, Matsuo, Mayor, Meunier, Murphy, Naef, O’Toole, Pepe, Pollacco, Rivera, Scargle, Simpson, Steinmetz, Stephen R. Kane, Strassmeier, Sudarsky, Thommes, Thommes, Udem, von Braun, Welsh, Wright, Wright   +55 more
core   +1 more source