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Author : Cameron John McInally
Publisher :
ISBN 13 :
Total Pages : 187 pages
Book Rating : 4.:/5 (233 download)
Download or read book The Delta Scuti Stars written by Cameron John McInally and published by . This book was released on 1977 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michel Breger
Publisher :
ISBN 13 :
Total Pages : 632 pages
Book Rating : 4.3/5 (91 download)
Download or read book Delta Scuti and Related Stars written by Michel Breger and published by . This book was released on 2000 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Contains 35 papers presented as part of the August 1999 workshop. The opening papers review photometric techniques, spectroscopic techniques, and theoretical modeling of the pulsations. Shorter contributions discuss such topics as double-mode SX phoenicis variables in globular clusters, convective effects on p-mode stability in delta Scuti stars, problems encountered in the Hipparcos variable stars analysis, and a list of delta Scuti stars and their associated parameters. No subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Author : Robert L. Millis
Publisher :
ISBN 13 :
Total Pages : 346 pages
Book Rating : 4.:/5 (89 download)
Download or read book An Investigation of the Delta Scuti Stars written by Robert L. Millis and published by . This book was released on 1968 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Helen Milligan
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (23 download)
Download or read book The Pulsation of Delta Scuti Stars written by Helen Milligan and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonradial Pulsations of Delta Scuti Stars written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An improved stellar model with a detailed composition structure is used to look at the nonradial behavior of a star near the region in the H-R diagram where the delta Scuti variables are found. Satisfactory solutions are obtained to the linear nonadiabatic equations. The newly calculated evolution models will be used in the future to study the pulsational stability of this class of stars. 4 refs., 2 figs., 1 tab.
Author : Dominic M. Bowman
Publisher : Springer
ISBN 13 : 3319666495
Total Pages : 217 pages
Book Rating : 4.3/5 (196 download)
Download or read book Amplitude Modulation of Pulsation Modes in Delta Scuti Stars written by Dominic M. Bowman and published by Springer. This book was released on 2017-09-07 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This outstanding thesis by Dominic Bowman provides a thorough investigation of long-standing questions as to whether amplitude modulation is astrophysical, whether it offers insights into pulsating stars, and whether simple beating of modes with stable amplitudes is unrecognised because of a lack of frequency resolution. In this thesis, the author studied a uniform sample of 983 delta Scuti stars—the most common type of main-sequence heat engine pulsator—that were observed nearly continuously for 4 years at stunning photometric precision of only a few parts per million by the Kepler space mission. With no mission planned to supersede the Kepler 4-year data set, this thesis will stand as the definitive study of these questions for many years. With revolutionary photometric data from the planet-hunting Kepler space mission, asteroseismic studies have been carried out on many hundreds of main-sequence solar-type stars and about 10,000 red giants. It is easy to understand why those stochastically driven stars have highly variable amplitudes. Over much of the rest of the Hertzsprung–Russell (HR) diagram, stellar pulsations are driven by heat mechanisms, which are much more regular than the stochastic driving in solar-like pulsators. Yet for decades, amplitude and frequency modulation of pulsation modes have been observed in almost all types of heat-driven pulsating stars. The author shows that the amplitude and frequency modulation are astrophysical, and he has investigated their implications and prospects to provide new insights into the delta Scuti stars and the many other types of heat-engine pulsators across the HR diagram.
Author :
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (893 download)
Download or read book Pulsations of Delta Scuti Stars written by and published by . This book was released on 1989 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general review of the pulsating [delta] Scuti variables is given including the observed light curves and positions of the stars in the Hertzsprung-Russell diagram. Theoretical interpretations from evolution and pulsation calculations give their masses, radii, luminosities, and even their approximate internal compositions. Three models of these stars are discussed and used to study the nonlinear hydrodynamic behavior of these stars. The hydrodynamic equations and the Stellingwerf method for obtaining strictly periodic solutions are outlined. Problems of allowing for time-dependent convection and its great sensitivity to temperature and density are presented. Tentative results to date do not show any tendency for amplitudes to grow to large unobserved amplitudes, in disagreement with an earlier suggestion by Stellingwerf. It is found that the very small growth rates of the pulsations may even be too small to be useful in seeking a periodic solution. 15 refs., 8 figs., 3 tabs.
Author : Michael A. Seeds
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.X/5 (1 download)
Download or read book The Delta Scuti Stars written by Michael A. Seeds and published by . This book was released on 1971 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michel Breger
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (29 download)
Download or read book Variability Near the Instability Strip in the (delta) Scuti Region written by Michel Breger and published by . This book was released on 1969 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mariya Ivanushkina
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (571 download)
Download or read book Monitoring Period Changes in High Amplitude Delta Scuti Stars written by Mariya Ivanushkina and published by . This book was released on 2004 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Viskum
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (471 download)
Download or read book Properties of Delta Scuti Stars written by Michael Viskum and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gordon C. Augason
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (81 download)
Download or read book Photometry of Variable Stars written by Gordon C. Augason and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Nonradial Pulsations of Rapidly Rotating [delta] Scuti Stars PDF Online Free](https://books.google.com/books/content/images/frontcover/co2pSgAACAAJ?fife=w200-h370)
Author : Edward James Kennelly
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (66 download)
Download or read book Nonradial Pulsations of Rapidly Rotating [delta] Scuti Stars written by Edward James Kennelly and published by . This book was released on 1990 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Torben Arentoft
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (471 download)
Download or read book Photometric studies of Delta Scuti stars written by Torben Arentoft and published by . This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Patrick Casey
Publisher :
ISBN 13 : 9780494823378
Total Pages : 436 pages
Book Rating : 4.8/5 (233 download)
Download or read book Analysis of Pre-main-sequence Delta-Scuti Stars written by Michael Patrick Casey and published by . This book was released on 2011 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew Reed Templeton
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (45 download)
Download or read book An Observational and Theoretical Study of High-amplitude Delta Scuti Stars written by Matthew Reed Templeton and published by . This book was released on 2000 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (684 download)
Download or read book Deriving the Structure of Pre-supernovae and Delta Scuti Stars Using Nonradial Oscillations written by and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report of a three-year Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The objective is to learn more about the internal structure of two classes of variable stars, by using the observational data afforded by their pulsation properties. The authors updated the one-dimensional computer codes to calculate the evolution and pulsation frequencies of representative delta Scuti and LBV models. They compared the observed pulsation properties with model predictions in an iterative process to find a model (or models) with interior structures that matched the observational constraints for several delta Scuti stars. They carried out nonlinear hydrodynamic modeling of LBV envelopes and proposed a mechanism for their periodic outbursts. Finally, they began validation of a two-dimensional stellar evolution code that will be used to investigate the effects of rotation and hydrodynamic instabilities on the interior structure of these stars.
