The Observation and Analysis of Stellar Photospheres
... stellar atmosphere ? A stellar atmosphere is a transition region from the stellar interior to the interstellar medium . One way to quantify this description is to look at the change in average kinetic temperature with height as observed ...
An Introduction to the Theory of Stellar Structure and Evolution
... stellar opacities expressed in square metres per kilogram , or densities in kilograms per metre cubed . ) As is customary in textbooks , exercises are scattered throughout the book and solutions are provided in an appendix . The theory ...
Spectrophotometric Methods for Determining Stellar Luminosity
... stellar spectral type and hence are possibly phenomena of effective temperature . The nebulous material itself must be in a physical state sensitive to the stellar radiation , and close enough for the density of radiation to be ...
Advanced Stellar Astrophysics
William Kenneth Rose. 1 Star formation and stellar evolution : an overview A short history of stellar astrophysics 1.1 Since the Sun is a star it is probably correct to say that stellar astrophysics began with Newton's well - known ...
Annual Report of the Photographic Study of Stellar Spectra Conducted at Harvard College Observatory
... OF THE PHOTOGRAPHIC STUDY OF STELLAR SPECTRA CONDUCTED AT THE HARVARD COLLEGE OBSERVATORY , EDWARD C. PICKERING , DIRECTOR . CAMBRIDGE : JOHN WILSON AND SON , University Press . 1890 . 1 3 4 5 1889. DEC . 5 2 HENRY. Front Cover.
Introduction to Stellar Astrophysics: Volume 3
... stellar structure and the basic ideas on which our understanding of stellar structure is founded . The book also provides a comprehensive discussion of stellar evolution . Careful comparison is made between theory and observation , and ...
Stellar Motions
... stellar velocities in space with reference to the sidereal system : 20 Class B stars ( Frost & Adams ) , 14. km ... stellar materials in the ante - stellar state subject to Newton's law of gravitation ? Does gravitation become ...
Stellar Dust
... stellar gases , and thus is life generated . But the magnets thus created , not being in a position to attract directly from the atmosphere the stellar elements , as the egg does , or the protoplasm did , they must necessarily obtain ...
Researches on the Evolution of the Stellar Systems ...: On the universality of the law of gravitation and on the orbits and general characteristics of binary stars
... stellar systems . The problem is difficult and the observations are incomplete , and hence in this arduous undertaking we may beg the indulgence of astronomers for such imperfections as the discussion of the subject will necessarily ...
Planetary and Stellar Studies
... stellar equator to which the planes of the orbits are almost parallel , and of which the north pole has the ... stellar equator " would be at right angles , or nearly so , to the Galactic plane , a fact he does not appear to have ...
Researches in Stellar Parallax by the Aid of Photography
... Stellar Universe , inasmuch as we are thereby assured for the first time , by actual demonstration , that no star is ... Stellar Universe . 1 Washington Observations , 1883 , Ap . ii . 2 Dunsink Observations , vols . iii and v . D2 ...
Introduction to the Physics of Stellar Interiors
... Stellar Structure , in Stars and Stellar Systems , Vol . VIII ( general ed . G. P. Kuiper ) , University of Chicago Press , 1965 . [ 5 ] Stellar Structure , in Encyclopedia of Physics , Vol . LI , Springer , Berlin , 1958 . [ 6 ] ...
On a Small Universal Stellar Microscope
... stellar observations ; in other cases it should be removed . It admits of being turned round in position 90 ° , and can thus be placed either normal or parallel to the slit . If , for instance , the cylindrical lens is situated within ...
Researches on the Evolution of the Stellar Systems ...: The capture theory of cosmical evolution, founded on dynamical principles and illustrated by phenomena observed in the spiral nebulae, the planetary system, the double and multiple stars and clusters and the star-clouds of the Milky way
... stellar systems might have originated , and having found all but one of these to be inadmissible , it only remains to examine the first of these methods , to ascertain whether the stellar systems could have originated in this way . That ...
An Investigation in Stellar Photography
... Stellar Photography . BY EDWARD C. PICKERING . Presented March 10 , 1886 . THE experiments to be described below were mainly conducted by the aid of an appropriation made in June , 1885 , from the Bache Fund of the National Academy of ...
Stellar Spectral Classification
... stellar spectroscopic observations . Joseph Fraunhofer in Munich had first observed solar and stellar spectra in 1814 , but after his death in 1826 the science of stellar spectroscopy languished . Brief revivals occurred from J. Lamont ...
Astronomy: The solar system. 2. Astrophysics and stellar astronomy
... stellar magnitude + 1.6 , about half as bright again as the polestar ; at an unfavorable opposition it is twelve times as bright and of magnitude - 1.1 , not as bright as Sirius ; while at the most favorable opposition it is of ...
Stellar Evolution and Its Relations to Geological Time
James Croll. EVOLUTION OF THE CHEMICAL ELEMENTS , AND ITS RELATIONS TO STELLAR EVOLUTION . We come now to the consideration of a subject which has a most important bearing on the question of stellar evolution , viz . the genesis and ...
The Stellar Cluster X Persei micrometrically serveyed
O. A. L. Pihl. 151007610 ل. The. great. stellar. cluster. in. the. sword. -. hilt. of. Perseus. ,. -. one. of. the. grandest. of telescopic objects , is situated in a region of the Northern Heavens , crossed ... stellar cluster in the sword- ...
Systematic Deviations from the Mean Stellar Distribution
... STELLAR SPECTRA BY WALTER S. ADAMS AND HENRY NORRIS RUSSELL ABSTRACT A new method of analyzing stellar spectra . The calibration of Rowland's intensity scale ( Contribution No. 358 ) leads to a knowledge of the relative numbers of atoms ...