view Abstract Citations (8) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Atmosphered of the B Stars.VI. The Profile of Hγ as a Function of Temperature and Electron Pressure Distribution. Aller, Lawrence H. ; Jugaku, Jun Abstract Experimental work with the luminous shock tube at the University of Michigan and other studies elsewhere have demonstrated the inadequacy of the Holtsmark theory of line broadening The line broadening due to electrons is comparable with that due to ions and cannot be neglected in theoretical descriptions of the hydrogen4ine profiles. In the astrophysically significant portions of the H4ine profiles the ions act according to the statistical theory, the electrons according to the discrete-encounter (phase-shift) theory. The electrons produce both adiabatic and non-adiabatic collisional effects At present, the nonadiabatic effects can be handled only very approximately. A detailed theory by A. C. Kolb, based on the classical path approximation, is applied to the calculation of line profiles in model atmospheres of earlytype stars. A satisfactory agreement of the theoretical line shapes and the observations of H is obtained with effective temperatures and surface gravities in accord with other lines of evidence. Publication: The Astrophysical Journal Pub Date: November 1958 DOI: 10.1086/146575 Bibcode: 1958ApJ...128..616A full text sources ADS | data products SIMBAD (4) Related Materials (7) Part 1: 1956ApJ...123..117A Part 2: 1956ApJ...123..133A Part 3: 1957ApJS....3....1A Part 4: 1957ApJ...125..742E Part 5: 1958ApJ...127..125A Part 7: 1959ApJS....4..109A Part 8: 1959ApJ...130..469A