Title :
Determination of microturbulent velocity of í Herculis
Author :
Said, N.M.M. ; Razelan, M.M. ; Aziz, A.H.A. ; Chong, H.Y. ; Zainuddin, M.Z.
Author_Institution :
Sch. of Phys., Univ. of Sci. Malaysia, Kubang Kerian, Malaysia
Abstract :
This paper represents the analysis of microturbulent velocity (vturb) of the early B-type star í Herculis, based on 199 spectra taken from Ritter Observatory and Elodie archives data. Determination of microturbulent velocity from this star was measured using the Doppler broadening equation and the values range from 1.50 - 5.83 kms-1 for Ritter Observatory and 2.21 - 5.33 kms-1 for Elodie archives data. We conclude that the varying values of the microturbulent velocity in this study are related to the instability of the star´s photosphere.
Keywords :
binary stars; stellar atmospheres; stellar rotation; stellar spectra; turbulence; variable stars; Doppler broadening equation; Elodie archive data; HD 160762; Ritter Observatory data; early B-type star; i Her; slowly pulsating B stars; spectroscopic binary; stellar microturbulent velocity determination; stellar photospheric instability; stellar rotation velocity; stellar spectra; velocity 1.50 km/s to 5.33 km/s; Astrophysics; Doppler effect; Educational institutions; Equations; Instruments; Observatories; individual (í Herculis); line profile; microturbulent; star;
Conference_Titel :
Space Science and Communication (IconSpace), 2013 IEEE International Conference on
Conference_Location :
Melaka
DOI :
10.1109/IconSpace.2013.6599424
