Results 81 to 90 of about 2,057,964 (253)

A Full Implementation of Spectro-perfectionism for Precise Radial Velocity Exoplanet Detection: A Test Case With the MINERVA Reduction Pipeline [PDF]

Publications of the Astronomical Society of the Pacific, 2019
We present a computationally tractable implementation of spectro-perfectionism, a method which minimizes error imparted by spectral extraction. We develop our method in conjunction with a full raw reduction pipeline for the MINiature Exoplanet Radial ...
M. Cornachione, A. Bolton, J. Eastman, M. Wilson, S. Wang, Samson A. Johnson, D. Sliski, N. McCrady, J. Wright, P. Plavchan, J. Johnson, J. Horner, R. Wittenmyer   +12 more
semanticscholar   +1 more source

Modeling Wind‐Driven Waves on Other Planets: Applications to Mars, Titan, and Exoplanets

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Waves could exist on any planet with sustained winds and stable surface liquids. However, differences in atmospheres, liquids, and gravity confound efforts to extend Earth‐based empirical wave models to other planetary environments. We adapted a physics‐based numerical wave model to study how planetary conditions affect the growth of waves. We
Una G. Schneck, Charlene E. Detelich, Milan Curcic, Andrew D. Ashton, Alexander G. Hayes, J. Taylor Perron   +5 more
wiley   +1 more source

Binary-lens Microlensing Degeneracy: Impact on Planetary Sensitivity and Mass-ratio Function

The Astronomical Journal
Gravitational microlensing is a unique method for discovering cold planets across a broad mass range. Reliable statistics of the microlensing planets require accurate sensitivity estimates.
Yuxin Shang, Hongjing Yang, Jiyuan Zhang, Shude Mao, Andrew Gould, Weicheng Zang, Qiyue Qian, Jennifer C. Yee   +7 more
doaj   +1 more source

PACO ASDI: an algorithm for exoplanet detection and characterization in direct imaging with integral field spectrographs

Astronomy & Astrophysics, 2020
Context.Exoplanet detection and characterization by direct imaging both rely on sophisticated instruments (adaptive optics and coronagraph) and adequate data processing methods.
Olivier Flasseur, L. Denis, É. Thiébaut, M. Langlois   +3 more
semanticscholar   +1 more source

Regime-switching model detection map for direct exoplanet detection in ADI sequences [PDF]

Astronomy & Astrophysics, 2019
Context. Beyond the choice of wavefront control systems or coronographs, advanced data processing methods play a crucial role in disentangling potential planetary signals from bright quasi-static speckles.
Carl-Henrik Dahlqvist, F. Cantalloube, O. Absil   +2 more
semanticscholar   +1 more source

Searching for Rotational X‐Ray Modulation on TIC 277539431

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT TIC 277539431, a fast rotating M7 dwarf, was detected to host the highest latitude flare to date at 81°$$ {81}^{{}^{\circ}} $$. Magnetic activity like stellar flares occurring at high latitude indicate occurrence of coronal loops at these latitudes on fully‐convective M dwarfs. In contrast, sunspots usually occur below 30°$$ {30}^{{}^{\circ}} $
Desmond Dsouza, Katja Poppenhäger, Ekaterina Ilin   +2 more
wiley   +1 more source

Bayesian analysis of exoplanet and binary orbits

, 2012
We introduce BASE (Bayesian astrometric and spectroscopic exoplanet detection and characterisation tool), a novel program for the combined or separate Bayesian analysis of astrometric and radial-velocity measurements of potential exoplanet hosts and ...
Armstrong, Armstrong, Bayes, Bond, Brooks, Charbonneau, Delplancke, Ford, Gatewood, Gelman, Gregory, Hastings, Holman, Hummel, Hummel, Koch, Kuhn, Lange, Lindegren, Lyot, Mahalanobis, Mamajek, Mao, Marois, Mayor, McArthur, Metropolis, Nascimbeni, Perryman, Perryman, Pickering, Prevot, R. Launhardt, Reffert, Seager, Shao, Smith, Smith, Sozzetti, T. Henning, T. Schulze-Hartung, Thiele, Tolbert, Vigan, Vogt, Wolszczan   +45 more
core   +1 more source

The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex, Moritz Hackstein, Christian Westhues, Michael Ramolla, Markus Demleitner, Dominik J. Bomans, Kerstin Weis, Christofer Fein, Rolf Chini   +8 more
wiley   +1 more source

Simultaneous exoplanet detection and instrument aberration retrieval in multispectral coronagraphic imaging

, 2013
High-contrast imaging for the detection and characterization of exoplanets relies on the instrument's capability to block out the light of the host star.
Beuzit, Jean-Luc, Fusco, Thierry, Mouillet, David, Mugnier, Laurent M., Ygouf, Marie   +4 more
core   +3 more sources

Effects of Hydrogen on Fe‐S Alloys and Their Implications for the Martian Core

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Meteorites suggest the Martian core comprises iron (Fe) or iron‐nickel (Fe‐Ni) alloy with sulfur (S) identified as the primary light element. The InSight data revealed a larger, less dense Martian core than previously estimated, indicating additional light elements.
Xuehui Wei, Stella Chariton, Vitali B. Prakapenka, Yingwei Fei, Sang‐Heon Shim   +4 more
wiley   +1 more source