Premian sequence evolution of a 4M star including rotation.

Özkara, Necati


Evolution of a rotating component star.
Çelikel, F Rikkat; Eryurt Ezer, Dilhan; Department of Physics (1987)
Ccd photometry and time series analysis of v2275 cyg and rw umi using data from the TUBITAK national observatory
Yılmaz, Mustafa Arda; Balman, Şölen; Department of Physics (2004)
In this work, we analyze the data from 1.5 m telescope of Tubitak National Observatory (TUG) for two objects V2275 Cyg and RW UMi. After applying aperture and PSF photometry to the CCD data, we derive the light curve of the objects. Also we apply discrete Fourier transform and Scargle time series analysis to obtain power spectrum and search for periodicities in their power spectra in which both systems show interesting properties. We discover large variations in V2275 Cyg due to irradiation effects on the s...
RXTE and Chandra observations of galactic microquasars GRO J1655-40 and GRS 1915+105
Bülbül, Gül Esra; Baykal, Altan; Department of Physics (2006)
In this thesis, RXTE timing analysis of Galactic Microquasars GRO J1655-40 and GRS 1915+105, the Chandra and RXTE joint spectral analysis of GRS 1915+105 are presented. We have investigated quasi periodic oscillations (QPOs) in the black hole binaries GRO J1655-40 and GRS 1915+105 observed in 99 and 122 observations made by the Proportional Counter Array (PCA) on board Rossi X-Ray Timing Explorer (RXTE) in both low energy band (2-12 keV) and high energy band (13-27 keV), respectively. Four different X-ray s...
Kırbıyık, H (1989-03-01)
Vibrational stability of pre-main sequence stars
Burhan, Mehmet; Kızıloğlu, Nilgün; Department of Physics (2004)
In this study, vibrational properties and stability of delta-Scuti like pulsating pre-main sequence stars have been investigated. Studies were held in the mass range 2-4 Mo and limited to radial linear adiabatic pulsations. Numerical computations were performed by the oscillation program written by Kırbıyık & Al-Murad (1993). The models were selected to be at the latest phases of the pre-main sequence evolution where the luminosity starts to increase. We have limited our calculations upto the end of the rad...
Citation Formats
N. Özkara, “Premian sequence evolution of a 4M star including rotation.,” Ph.D. - Doctoral Program, Middle East Technical University, 1984.