Results 51 to 60 of about 1,000,727 (374)
Symposium - International Astronomical Union, 2000 Lithium continues to be a surprising element and more than ever the study of its creation, destruction and distribution is giving us tools to understand, not only the chemical evolution of this element, but also the nature of mass loss of evolved giants and nucleosynthesis of other elements in cases of very low-metal giants.
openaire +2 more sources
A hot Saturn on an eccentric orbit around the giant star EPIC228754001 [PDF]
, 2017 Although the majority of radial velocity detected planets have been found orbiting solar-type stars, a fraction of them have been discovered around giant stars.
M. Jones +12 more
semanticscholar +1 more source
Precise radial velocities of giant stars [PDF]
Astronomy & Astrophysics, 2006 Context: Future astrometric missions such as SIM PlanetQuest need very stable reference stars. K giants have large luminosities, which place them at large distances and thus the jitter of their photocenters by companions is relatively small. Therefore K giants would be best suited as references.
Hekker, S. +6 more
openaire +4 more sources
SBS 0802+529: A New Variable Star from the Second Byurakan Survey
Open Astronomy, 2012 A new emission line star was discovered on the plates of the Second Byurakan Survey (SBS). the follow up spectroscopy demonstrated that the object had a spectrum dominated by a late-type giant star with superposed hydrogen emission lines.
Chavushyan V. +4 more
doaj +1 more source
The Morphology of the Outflow in the Grazing Envelope Evolution
Galaxies, 2018 We study the grazing envelope evolution (GEE), where a secondary star, which orbits the surface of a giant star, accretes mass from the giant envelope and launches jets. We conduct simulations of the GEE with different half-opening angles and velocities,
Sagiv Shiber
doaj +1 more source
INTERNAL ROTATION OF THE RED-GIANT STAR KIC 4448777 BY MEANS OF ASTEROSEISMIC INVERSION [PDF]
, 2015 We study the dynamics of the stellar interior of the early red-giant star KIC 4448777 by asteroseismic inversion of 14 splittings of the dipole mixed modes obtained from Kepler observations.
M. D. Mauro +18 more
semanticscholar +1 more source
False Planets around Giant Stars: A Case Study of Sanders 364 in M67
The Astronomical Journal, 2023 Discovering planets in sparsely populated regions of parameter space is crucial to improving our understanding of planetary formation and evolution. One such region is the subset of planets that orbit giant, evolved stars.
Qijia Zhou +7 more
doaj +1 more source
KOI-3890: A high mass-ratio asteroseismic red-giant$+$M-dwarf eclipsing binary undergoing heartbeat tidal interactions [PDF]
, 2019 KOI-3890 is a highly eccentric, 153-day period eclipsing, single-lined spectroscopic binary system containing a red-giant star showing solar-like oscillations alongside tidal interactions.
Bell, Keaton J. +11 more
core +3 more sources
THE CALIFORNIA PLANET SURVEY IV: A PLANET ORBITING THE GIANT STAR HD 145934 AND UPDATES TO SEVEN SYSTEMS WITH LONG-PERIOD PLANETS [PDF]
, 2015 We present an update to seven stars with long-period planets or planetary candidates using new and archival radial velocities from Keck-HIRES and literature velocities from other telescopes.
Y. Katherina Feng +7 more
semanticscholar +1 more source
Accretion of a giant planet onto a white dwarf star [PDF]
Nature, 2019 The detection1 of a dust disk around the white dwarf star G29-38 and transits from debris orbiting the white dwarf WD 1145+017 (ref. 2) confirmed that the photospheric trace metals found in many white dwarfs3 arise from the accretion of tidally disrupted
B. Gänsicke +5 more
semanticscholar +1 more source