Results 61 to 70 of about 22,677,777 (195)
Is there an exoplanet in the Solar system? [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2016 Abstract We investigate the prospects for the capture of the proposed Planet 9 from other stars in the Sun's birth cluster. Any capture scenario must satisfy three conditions: the encounter must be more distant than ∼150 au to avoid perturbing the Kuiper belt; the other star must have a wide-orbit planet (a ≳ 100 au); the planet must be ...
Mustill, Alexander J., +2 more
openaire +3 more sources
EVIDENCE OF POSSIBLE SPIN–ORBIT MISALIGNMENT ALONG THE LINE OF SIGHT IN TRANSITING EXOPLANET SYSTEMS [PDF]
, 2010 Of the 26 transiting exoplanet systems with measurements of the Rossiter–McLaughlin (RM) effect, eight have now been found to be significantly spin–orbit misaligned in the plane of the sky (i.e., RM misalignment angle |λ| ≳ 30° and inconsistent with λ ...
K. Schlaufman
semanticscholar +1 more source
Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems [PDF]
, 2006 We present results of a reconnaissance for stellar companions to all 131 radial velocity-detected candidate extrasolar planetary systems known as of 2005 July 1.
D. Raghavan +6 more
semanticscholar +1 more source
The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission
The Astronomical Journal, 2023 The legacy of NASA’s K2 mission has provided hundreds of transiting exoplanets that can be revisited by new and future facilities for further characterization, with a particular focus on studying the atmospheres of these systems. However, the majority of
Erica Thygesen +18 more
doaj +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
Long-term evolution of exoplanet systems
Proceedings of the International Astronomical Union, 2022 AbstractIn this Review, I discuss recent developments on the long-term dynamical evolution of exoplanet systems, focusing on how distinctive dynamical processes may have shaped the orbital architectures of observed populations. I include three applications that highlight part of my own work. First, I examine the high-eccentricity tidal migration of hot
openaire +1 more source
Gaia astrometry and exoplanetary science: DR2, (E)DR3, and beyond
Comptes Rendus. Physique, 2023 I review the recent impact of Gaia astrometry in the exoplanet field, both in terms of characterization of the orbits and masses of planetary systems and the properties of their host stars.
Sozzetti, Alessandro
doaj +1 more source
Searching for Rotational X‐Ray Modulation on TIC 277539431
Astronomische Nachrichten, EarlyView.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 +2 more
wiley +1 more source
Planetpol polarimetry of the exoplanet systems 55 Cnc and τ Boo [PDF]
, 2008 ‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing / Royal Astronomical ...
P.W.Lucas +8 more
semanticscholar +1 more source
Out There No One Has a Right to Die
Bioethics, EarlyView.ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley +1 more source