Results 31 to 40 of about 1,000,727 (374)
Infrared Spectroscopy of Symbiotic Stars. IV. V2116 Ophiuchi/GX 1+4, The Neutron Star Symbiotic [PDF]
, 2005 We have computed, based on 17 infrared radial velocities, the first set of orbital elements for the M giant in the symbiotic binary V2116 Ophiuchi. The giant's companion is a neutron star, the bright X-ray source GX 1+4. We find an orbital period of 1161
Bandyopadhyay R. +26 more
core +4 more sources
The properties of planets around giant stars [PDF]
Astronomy & Astrophysics, 2014 Context: More than 50 exoplanets have been found around giant stars, revealing different properties when compared to planets orbiting solar-type stars. In particular, they are Super-Jupiters and are not found orbiting interior to $\sim$ 0.5 AU. Aims: We are conducting a radial velocity study of a sample of 166 giant stars aimed at studying the ...
Matias I. Jones +6 more
openaire +12 more sources
Planetary Engulfment Prognosis within the ρ CrB System
The Astrophysical Journal, 2023 Exoplanets have been detected around stars at various stages of their lives, ranging from young stars emerging from formation to the latter stages of evolution, including white dwarfs and neutron stars.
Stephen R. Kane
doaj +1 more source
K2-97b: A (RE-?)INFLATED PLANET ORBITING A RED GIANT STAR [PDF]
, 2016 Strongly irradiated giant planets are observed to have radii larger than thermal evolution models predict. Although these inflated planets have been known for over 15 years, it is unclear whether their inflation is caused by the deposition of energy from
S. Grunblatt +13 more
semanticscholar +1 more source
Planets, Planetary Nebulae, and Intermediate Luminosity Optical Transients (ILOTs)
Galaxies, 2018 I review some aspects related to the influence of planets on the evolution of stars before and beyond the main sequence. Some processes include the tidal destruction of a planet on to a very young main sequence star, on to a low-mass main sequence star ...
Noam Soker
doaj +1 more source
On the serendipitous discovery of a Li-rich giant in the globular cluster NGC 362 [PDF]
, 2015 We have serendipitously identified the first lithium-rich giant star located close to the red giant branch bump in a globular cluster. Through intermediate-resolution FLAMES spectra we derived a lithium abundance of A(Li)=2.55 (assuming local ...
Angelou, George C. +8 more
core +2 more sources
Neutron stars are giant hypernuclei? [PDF]
The Astrophysical Journal, 1985 Neutron stars are studied in the framework of Lagrangian field theory of interacting nucleons, hyperons, and mesons, which is solved in the mean field approximation. The theory is constrained to account for the four bulk properties of nuclear matter; the saturation binding and density, compressibility, and charge symmetry energy.
openaire +3 more sources
The Creation of Lithium in Giant Stars [PDF]
Highlights of Astronomy, 1995 A time-dependent “convective diffusion” algorithm for convective transport in the mixing-length framework has been coupled for the first time with a self-consistent full evolutionary computation, in order to investigate theoretically the creation of superrich lithium stars on the asymptotic giant branch.
Arnold I. Boothroyd, I.-Juliana Sackmann
openaire +2 more sources
The Global Evolution of Giant Molecular Clouds II: The Role of Accretion [PDF]
, 2011 We present virial models for the global evolution of giant molecular clouds. Focusing on the presence of an accretion flow, and accounting for the amount of mass, momentum, and energy supplied by accretion and star formation feedback, we are able to ...
Abdo +79 more
core +2 more sources
The WISSH quasars Project: II. Giant star nurseries in hyper-luminous quasars [PDF]
, 2017 Studying the coupling between the energy output produced by the central quasar and the host galaxy is fundamental to fully understand galaxy evolution.
F. Duras +15 more
semanticscholar +1 more source