[PDF] Top 20 A spectroscopic study of binary systems

... It can be seen that the mass ratio is slightly lower than that obtained by Worden and Whelan as is itie systemic velocity. Their spectra were at a lower dispersion of 62A/mm and measured using an oscillosope comparator, ... See full document

... Frequency d−1 Figure C.15: The second-moment Lomb-Scargle periodograms of the 0 d−1 to 3 d−1 frequency range of HD 3112 computed by FAMIAS, showcasing the three frequencies f62 , f63 a[r] ... See full document

... contact binary all used observations made by Sister´o and Castore de Sister´o in ...The spectroscopic images were taken with the high resolution echelle spectro- graph HERCULES, where the previous ... See full document

... black-hole binary. The first such study was done by Buonanno et ...this study is severely limited by numerical resolution, sizable initial eccentricity (∼ ... See full document

... X 622.7-2325Nw, RR Ly 12 Boo and HR 6169 ob- tained by Rosero et al. [9] and Tomkin & Fekel [10], we find the orbital elements of these systems by the PNN. Our numerical results show that the results obtained ... See full document

... If we assume that multiplicity and hot-Jupiter occurrence are independent, the chance of finding two hot Jupiters around two metal-rich stars ([Fe/H] > 0.25) is ∼ 0.25%. This value is an upper limit of the estimated ... See full document

... this study has been on binary state non-repairable systems and the problems have been categorized with respect to different ...to study on each of the mentioned area, need to flashback to the ... See full document

... to study the molecular structure including the molecular interaction in the liquid mixture [6, ...and spectroscopic studies of liquid mixtures have gained much significance in assessing the nature of ... See full document

... An established mathematical model, describing the rate at which transient liquid phase bonding (TLP bonding) progresses in binary alloy systems, is subjected to careful scrutiny. It is shown that the ... See full document

... double-lined spectroscopic binaries appearing in the Geneva- Copenhagen spectroscopic survey of nearby stars ( Nordström et ...the spectroscopic survey of proper motion stars of Carney, Latham, and ... See full document

... Even order hyperpolarizabilities are zero, vanishing for systems with inversion symmetry. However, in the present case the situation differs since, 2A-5CB is a non-centrosymmetric molecule possessing a permanent ... See full document

... 82 systems: 51 single-lined (SB1) and 31 double-lined (SB2) spectroscopic ...the binary fraction and orbital properties across the 30 Doradus region are found to be similar to existing Galactic ... See full document

... for binary mixture of nitro-alkanes and 4-methyl-2-pentanone with hydrocarbons and showed the importance of steric factors for molecular interactions in binary liquid mixtures 7,8 ... See full document

... Finally, we studied the period-eccentricity distribution of the companions. We included a total of 130 spectroscopic binaries from the literature with known eccentricities. We found an ec- centricity distribution ... See full document

... The study of binary stars is vitally important in astronomy because it is only by carefully measuring the interactions between stars that we can accurately determine their absolute characteristics such as ... See full document

... and spectroscopic data rules out the possibility that these transit detections are blended stellar eclipsing binary systems, and we conclude that these objects are transiting ... See full document

... Single WN6 stars occur in two 'pairs' of WR stars, and their derived values of differ by less than 0.1 mag; we adopt M v (WN6) = -5.8 mag. Also, a binary WN6+B0:I star occurs in pair 5* Taking (B O I ) = -6.2 mag, ... See full document

... The mass-radius plot for low-mass stars is shown in Fig- ure 9. The measured mass and radius of the low-mass star in SDSS 0138-0016 are consistent with evolutionary mod- els. Also shown are a number of other precise ... See full document

... The study of interaction of nuclear radiations with matter is the important research area for the development of materials which can be used in high radiation ... See full document

... The scope of the project included the comparison of completing certain tasks in the Academic Affairs department using both a traditional manual system and an automated electronic system. Comparisons of efficiency were ... See full document