Spectroscopic Study of a Sample of Visual Double Stars

Details Spectroscopic Study of a Sample of Visual Double Stars Spectroscopic Study of a Sample of Visual Double Stars

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..35...11c&link_type=abstract

The Messenger, No. 35, P.11, 1984

Statistics

Computation

Scientific paper

We learn what we know about stars from the photons that originate in their atmospheres and eventually reach our telescopes. Therefore, if we want to account for the spectral distribution of the radiation received from a star we must know the physical properties in its atmosphere. One of the great achievements of the last twenty years in the theory of the stellar atmospheres has been the calculation of detailed models of their average physical properties. This theory teaches us that the atmosphere of a well-behaved star can be characterized by a small number of parameters. Once they are specified, the computation of the model stellar atmosphere follows in a unique way, within the assumed approximations. The most important of these parameters are the effective temperature, the surface gravity and the chemical composition. For the sake of completeness, two more parameters have to be mentioned: the mixing length and the microturbulence. They pertain to very crude approximations behind which is hidden our poor understanding of such phenomena as convection or turbulence in the atmospheres of the stars. In general, the microturbulence and the mixing length are adjusted in a more or less empirical way. In fact, there are indications that they might not be fully independent from the other parameters.

Affiliated with

Also associated with

No associations

Rating

Spectroscopic Study of a Sample of Visual Double Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectroscopic Study of a Sample of Visual Double Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic Study of a Sample of Visual Double Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1043161