Browsing by Subject "Techniques"

Now showing 1 - 2 of 2

Open Access
Homogeneous transit timing analyses of 10 exoplanet systems
(Oxford University Press, 2022-03-07) Baştürk, Ö.; Esmer, E. M.; Yalçınkaya, S.; Torun, Ş.; Mancini, L.; Helweh, Fadel El; Karamanlı, Ertuğrul; Southworth, J.; Aliş, S.; Wünsche, A.; Tezcan, F.; Aladağ, Y.; Aksaker, N.; Tunç, Ege; Davoudi, F.; Fişek, S.; Bretton, M.; Evans, D. F.; Yeşilyaprak, C.; Yılmaz, M.; Tezcan, C. T.; Yelkenci, K.
We study the transit timings of 10 exoplanets in order to investigate potential transit timing variations in them. We model their available ground-based light curves, some presented here and others taken from the literature, and homogeneously measure the mid-transit times. We statistically compare our results with published values and find that the measurement errors agree. However, in terms of recovering the possible frequencies, homogeneous sets can be found to be more useful, of which no statistically relevant example has been found for the planets in our study. We corrected the ephemeris information of all 10 planets we studied and provide these most precise light elements as references for future transit observations with space-borne and ground-based instruments. We found no evidence for secular or periodic changes in the orbital periods of the planets in our sample, including the ultra-short period WASP-103 b, whose orbit is expected to decay on an observable time-scale. Therefore, we derive the lower limits for the reduced tidal quality factors (Q) for the host stars based on best-fitting quadratic functions to their timing data. We also present a global model of all available data for WASP-74 b, which has a Gaia parallax-based distance value ∼25 per cent larger than the published value.
Open Access
Texture and form in Beat Furrer’s music: an analysis of Presto, and A due
(2021-03) H. Javaheri, Mohammad
Frequently used techniques between the compositions of one specific composer can cause recognizability. It is conceivable to tie compositions to their creator by detecting similar compositional approaches or certain specific techniques and craftsmanship. One of the ways of developing a certain character as a composer is rooted in elaborating and emphasizing a limited number of compositional materials in different frameworks. This thesis aims to show Beat Furrer’s écriture in two of his 1997's works, Presto and a due, which have several common elements and similar approaches in their compositional process. Besides, the thesis traces Furrer’s approach towards compositional crafts in both pieces to explore the gathering of his techniques in using patterns. In these pieces, his patterns' organization includes pitch, pitch class, interval, and rhythmic patterns, which is possible to refer them to a post-serialism approach. In order to grasp this statement, this thesis analyzes texture, form and their relation in Beat Ferrer’s music. By analyzing the two pieces and discussing the mutual methods and procedure between them, this thesis aims to discover his attitudes as a composer for the indicated pieces, which at the end leads to the recognizability of the composer by the listener.