Results 1 to 10 of about 1,000,727 (374)
The Astronomy and Astrophysics Review, 2017 The internal properties of stars in the red-giant phase undergo significant changes on relatively short timescales. Long near-uninterrupted high-precision photometric timeseries observations from dedicated space missions such as CoRoT and Kepler have ...
Christensen-Dalsgaard, J., Hekker, S.
core +7 more sources
Giant star-forming clumps? [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2020 With the spatial resolution of the Atacama Large Millimetre Array (ALMA), dusty galaxies in the distant Universe typically appear as single, compact blobs of dust emission, with a median half-light radius, ≈1 kpc.
R. Ivison +7 more
semanticscholar +8 more sources
EPJ Web of Conferences, 2011 It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body around an M star, can create detectable TTV signals (Kirste & Haghighipour, 2011).
Rastegar S., Haghighipour N.
doaj +3 more sources
A giant planet imaged in the disk of the young star Beta Pictoris [PDF]
, 2010 Here we show that the ~10 Myr Beta Pictoris system hosts a massive giant planet, Beta Pictoris b, located 8 to 15 AU from the star. This result confirms that gas giant planets form rapidly within disks and validates the use of disk structures as ...
A. Boccaletti +14 more
core +4 more sources
Precise radial velocities of giant stars. XVI. Planet occurrence rates from the combined analysis of the Lick, EXPRESS, and PPPS giant star surveys [PDF]
Astronomy & Astrophysics, 2022 RV surveys of evolved stars allow us to probe a higher stellar mass range compared to main-sequence samples. Differences between the planet populations can be caused by either the differing stellar mass or stellar evolution.
V. Wolthoff +5 more
semanticscholar +1 more source
VVV-WIT-08: the giant star that blinked [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We report the serendipitous discovery of a late-type giant star that exhibited a smooth, eclipse-like drop in flux to a depth of 97 per cent. Minimum flux occurred in 2012 April and the total event duration was a few hundred days. Light curves in V, I,
Leigh C. Smith +13 more
semanticscholar +1 more source
Comment on “A noninteracting low-mass black hole–giant star binary system” [PDF]
Science, 2020 Thompson et al. (Reports, 1 November 2019, p. 637) interpreted the unseen companion of the red giant star 2MASS J05215658+4359220 as most likely a black hole.
E. V. D. van den Heuvel, T. Tauris
semanticscholar +1 more source
Direct imaging and astrometric detection of a gas giant planet orbiting an accelerating star [PDF]
Science, 2022 Direct imaging of gas giant exoplanets provides information on their atmospheres and the architectures of planetary systems. However, few planets have been detected in blind surveys with direct imaging.
T. Currie +33 more
semanticscholar +1 more source
Population Synthesis of Helium White Dwarf–Red Giant Star Mergers and the Formation of Lithium-rich Giants and Carbon Stars [PDF]
Astrophysical Journal, 2020 The formation histories of lithium-rich and carbon-rich red giants are not yet understood. It has been proposed that the merger of a helium-core white dwarf with a red giant branch (RGB) star might provide a solution. We have computed an extended grid of
Xianfei Zhang +3 more
semanticscholar +1 more source
Response to Comment on “A noninteracting low-mass black hole–giant star binary system” [PDF]
Science, 2020 Van den Heuvel and Tauris argue that if the red giant star in the system 2MASS J05215658+4359220 has a mass of 1 solar mass (M☉), then its unseen companion could be a binary composed of two 0.9 M☉ stars, making a triple system.
T. Thompson +9 more
semanticscholar +1 more source