stellar rotation

Stellar rotation is the angular motion of a star about its axis.

These distortions will move across spectral line profiles due to the stellar rotation.

The system is not coplanar, with each other or with the stellar rotation.

It is probably in synchronous orbit with stellar rotation.

The stellar rotation is a relatively low 16 km/s, which does not produce any significant flattening of its disk.

Stellar rotation is measured through Doppler shift or by tracking active surface features.

The magnetic field of the star interacts with the wind, which applies a drag to the stellar rotation.

The stellar rotation needs to be the dominating effect broadening spectral lines, .

This team retracted this claim in 2002, but found a different periodicity of 7 days possibly due to stellar rotation.

Struve's research was mostly focused on binary and variable stars, stellar rotation and interstellar matter.

This results in a transfer of angular momentum from the star to the surrounding space, causing a slowing of the stellar rotation rate.

It varies slightly from pole to equator due to its stellar rotation , which induces an oblateness of order 10 parts per million.

He has done pioneering work on Cepheid variables, stellar rotation, novae, and the chemical evolution of the Milky Way.

Struve's major discoveries were detection of stellar rotation and dependence of the rotational speed on the stellar spectral class (temperature).

The periodic modulation of Zeeman signatures during the stellar rotation is employed to make an iterative reconstruction of the vectorial magnetic field at stellar surface.

Her research fields are astronomy and astrophysics, the general theory of relativity, black holes, gamma ray bursts, stellar rotation, and rotational velocities of symbiotic stars.

'Stellar Rotation: A Historical Survey', chapter in Stellar Astrophysical Fluid Dynamics (2003)

In addition to stellar rotation, he also studied Stark effect in stellar spectra, that is broadening of the spectral lines by the electric field in the stellar atmosphere.

Catalogue of rotational velocities of the stars is the name for catalogue of projected stellar rotation, publushed in 1982 by Uesugi, A. and Fukuda, I.

However, this period is close to the rotation period of 55 Cancri A, which led to the possibility that the 43-day period was caused by stellar rotation rather than a planet.

Microlensing has also been proposed as a means to find dark objects like brown dwarfs and black holes, study starspots, measure stellar rotation, and probe quasars including their accretion disks.

To go between effective temperature and color requires a color-temperature relation, and constructing that is difficult; it is known to be a function of stellar composition and can be affected by other factors like stellar rotation.

Asteroseismic studies, chromospheric activity, and stellar rotation (gyrochronology), are all consistent with the α Cen system being similar in age to, or slightly older than, the Sun, with typical ages quoted between 4.5 and 7 billion years (Gyr).

However misclassification of the star as a giant combined with an underestimation of the orbit of the Gamma Cephei binary, which implied the planet's orbit would be unstable, led some astronomers to suspect the variations were merely due to stellar rotation.

It has a longitudinal magnetic field with a mean strength of -233 43 G. A projected stellar rotation velocity of about 14 km s is considered low for a star of this type, which may indicate it is being viewed from nearly pole-on.