Results 311 to 320 of about 716,854 (348)

An Abrupt Change in the Disk Fraction of Free-Floating Planets at the Deuterium-Burning Ignition Limit

Rodrigues T, Bouy H, Raymond S, Martín E, Bertin E, Romero JO, Barrado D, Huélamo N, Tamura M, Roig NM, Galli P, Cuillandre J.   +11 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Stellar mass calibration

International Astronomical Union Colloquium, 1978
SummaryAlthough mass results and their evolutionary connotations now largely stem from observational realms other than astrometry, it is the combination with proper motions, kinematics, and distance calibration which significantly enhances their usefulness.
openaire   +1 more source

Stellar mass loss and atmospheric instability

International Astronomical Union Colloquium, 1988
AbstractA review is given of rate of mass-loss values in the upper part of the Hertzsprung-Russell diagram. Near the luminosity limit of stellar existance = −10−4 M⊙ yr−1. Episodical mass loss in bright variable super- and hypergiants does not significantly increase this value. For Wolf-Rayet stars the rate of mass loss is larger by a factor 140 than
Cornelis de Jager, Hans Nieuwenhuijzen
openaire   +1 more source

Stellar Masses and Radii

1989
We have seen that a careful analysis of a star’s spectrum reveals the chemical and physical characteristics of its atmosphere, but the spectrum tells us very little about its deep interior. It gives us only the total amount of radiation emitted per second by the star; it tells us nothing about the generation and transport of this radiation through the ...
Lloyd Motz, Jefferson Hane Weaver
openaire   +1 more source

STELLAR-MASS BLACK HOLES

2014
This chapter examines stellar-mass black holes. The empirical study of black holes began in the 1960s with the discovery of quasars and the advent of X-ray astronomy. X-ray detectors could detect X-rays coming from a particular direction—as the instrument rotated, the detector scanned the sky.
openaire   +2 more sources

Stellar mass-luminosity and mass-radius relations

Astrophysics and Space Science, 1991
The new binary star data have been used together with new theoretical estimates in the study of mass-luminosity and mass-radius relations (MLR and MRR) for the Main-Sequence (MS) stars. The slopes of the relations change at certain critical values, e.g., at ∼0.5M⊙ for MLR and at ∼1.7M⊙ for MRR. The first point is the indication of transition from fully-
Osman Demircan, G�ksel Kahraman
openaire   +1 more source

Heat of Stellar Masses

Nature, 1881
I SEND you a working hypothesis which I think will well pay for its place in the world. It is as to the heat of large stellar masses; that the imperfect conduction of the kinetic force producing gravitation through large stellar masses causes heat in them.
openaire   +1 more source

The Largest Stellar Masses

1978
In view of their young age and their exceedingly fast evolution, the extremely massive stars are targets of particular attention when measurements and models are linked together. Masses computed from spectroscopic orbits depend on the cube of the radial-velocity amplitude and are — more often than not in these cases — subject to the distortion of the ...
openaire   +1 more source

Maximum stellar iron core mass

Pramana, 2003
An analytical method of estimating the mass of a stellar iron core, just prior to core collapse, is described in this paper. The method employed depends, in part, upon an estimate of the true relativistic mass increase experienced by electrons within a highly compressed iron core, just prior to core collapse, and is significantly different from a more ...
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly