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Microwave Emission from Late Type Dwarf Stars UV Ceti and YZ CMi

1985
We present simultaneous VLA observations of two late type dwarf stars UV Ceti and YZ CMi at 6 and 20 cm, Multiwavelength observations put sufficient constraints on existing interpretations of quiescent radio emission from these stars. We find that the microwave emission is due to gyro-synchrotron radiation of nonthermal electrons having a power law ...
M. R. Kundu, R. K. Shevgaonkar
openaire   +1 more source

Radial-velocity measures and the existence of astrophysical binaries in late-type dwarf stars

Publications of the Astronomical Society of the Pacific, 1986
Radial velocities with errors of 1-2 km/s are presented based on CCD scans obtained with the Kitt Peak National Observatory coude feed telescope between 1982 and 1985 of 48 dK-M stars that lack Balmer emission. Comparison with Gliese's (1969) values shows only two stars to be spectroscopic binary candidates with small velocity amplitudes.
B. W. Bopp, R. Meredith
openaire   +1 more source

Formation depths of lithium resonance absorption lines in the atmospheres of late-type stars and brown dwarfs

Kinematics and Physics of Celestial Bodies, 2010
A numerical technique for determining absorption line formation depths in the atmospheres of late-type stars and substellar-mass subdwarfs is proposed. The technique is based on estimating individual absorptions contributed by certain layers of the stellar model atmosphere to the resulting equivalent width of a spectral line.
openaire   +1 more source

A trail of dark-matter-free galaxies from a bullet-dwarf collision

Nature, 2022
Pieter van Dokkum   +2 more
exaly  

A Jovian analogue orbiting a white dwarf star

Nature, 2021
J W Blackman   +2 more
exaly  

A giant planet candidate transiting a white dwarf

Nature, 2020
Andrew Vanderburg   +2 more
exaly  

A white dwarf accreting planetary material determined from X-ray observations

Nature, 2022
Tim Cunningham   +2 more
exaly  

Current challenges in the physics of white dwarf stars

Physics Reports, 2022
Didier Saumon
exaly  

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