Filiz Kahraman Aliçavuş
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View article: Pulsating and Nonpulsating Components of Detached Eclipsing Binaries in the <i>δ</i> Scuti Instability Strip
Pulsating and Nonpulsating Components of Detached Eclipsing Binaries in the <i>δ</i> Scuti Instability Strip Open
Pulsating detached eclipsing binary systems are crucial for studying the internal structure of oscillating stars. These systems are advantageous because binary effects on pulsations are minimal, allowing for more accurate determinations of…
View article: Spectroscopic and photometric investigation of some potentially chemically peculiar δ Scuti stars
Spectroscopic and photometric investigation of some potentially chemically peculiar δ Scuti stars Open
Investigating chemically peculiar pulsating stars is crucial for understanding the pulsation driving mechanism in detail. To reveal the true peculiarity properties of stars, detailed spectroscopic analysis is essential. Therefore, in this …
View article: Pulsating and Non-pulsating Components of Detached Eclipsing Binaries in the $δ$ Scuti instability strip
Pulsating and Non-pulsating Components of Detached Eclipsing Binaries in the $δ$ Scuti instability strip Open
Pulsating detached eclipsing binary systems are crucial for studying the internal structure of oscillating stars. These systems are advantageous because binary effects on pulsations are minimal, allowing for more accurate determinations of…
View article: Characterizing the variability of a sample of massive stars in eclipsing binaries
Characterizing the variability of a sample of massive stars in eclipsing binaries Open
Massive stars exhibit a perplexing mismatch between their inferred masses from different observational techniques, posing a significant challenge to our understanding of stellar evolution and structure. This discrepancy is believed to be c…
View article: Photometric Investigation of WY Leo: An Eclipsing Binary System with $\delta$ Scuti Component
Photometric Investigation of WY Leo: An Eclipsing Binary System with $\delta$ Scuti Component Open
Eclipsing binary stars with $\delta$ components are exceptional systems for gaining a deeper understanding of stellar systems. WY Leo is one such system exhibiting $\delta$-type oscillations. However, it has not been extensively studied in…
View article: Eclipsing binary systems with $β$ Cephei components. V1216 Sco
Eclipsing binary systems with $β$ Cephei components. V1216 Sco Open
We present a detailed analysis of the high-mass binary system V1216 Sco, an eclipsing Algol-type binary hosting a $β$ Cephei pulsator, with an orbital period of 3.92 days. This system was analyzed using TESS photometry and high-resolution …
View article: Absolute parameters of young stars: NO Puppis
Absolute parameters of young stars: NO Puppis Open
The southern early-type, young, eccentric-orbit eclipsing binary NO Puppis forms the A component of the multiple star Gaia DR3 5528147999779517568. The B component is an astrometric binary now at a separation of about 8.1 arcsec. There may…
View article: A comprehensive study of an oscillating eclipsing Algol: Y Camelopardalis
A comprehensive study of an oscillating eclipsing Algol: Y Camelopardalis Open
Y Camelopardalis (Y Cam) is classified as one of the oscillating eclipsing Algol (oEA) systems, which feature a $\delta$ Scuti-type pulsating component alongside mass transfer phenomena. oEA systems are invaluable for probing the evolution…
View article: A Comprehensive Study of an Oscillating Eclipsing Algol: Y Cam
A Comprehensive Study of an Oscillating Eclipsing Algol: Y Cam Open
Y Cam is classified as one of the oscillating Eclipsing Algol (oEA) systems, which feature a $δ$ Scuti-type pulsating component alongside mass transfer phenomena. oEA systems are invaluable for probing the evolutionary processes and intern…
View article: On the Existence of "Maia variables"
On the Existence of "Maia variables" Open
There are different classes of pulsating stars in the H-R diagram. While many of those classes are undisputed, some remain a mystery such as the objects historically called "Maia variables". Whereas the presence of such a class was suggest…
View article: Single-lined eclipsing binaries with δ Scuti components: GQ Dra, RR Lep, and TYC 683-640-1
Single-lined eclipsing binaries with δ Scuti components: GQ Dra, RR Lep, and TYC 683-640-1 Open
Eclipsing binaries with (a) pulsating component(s) are remarkable objects to investigate the evolution and structure of stellar systems. Detailed studies of such systems are also important to reveal their pulsation properties. The largest …
View article: Discovery of Delta Scuti variables in eclipsing binary systems II.Southern TESS field search
Discovery of Delta Scuti variables in eclipsing binary systems II.Southern TESS field search Open
The presence of pulsating stars in eclipsing binary systems (EBs) makes these objects significant since they allow us to investigate the stellar interior structure and evolution. Different types of pulsating stars could be found in EBs suc…
View article: Discovery of delta Scuti variables in eclipsing binary systems II. Southern TESS field search
Discovery of delta Scuti variables in eclipsing binary systems II. Southern TESS field search Open
The presence of pulsating stars in eclipsing binary systems (EBs) makes these objects significant since they allow us to investigate the stellar interior structure and evolution. Different types of pulsating stars could be found in EBs, su…
View article: Comprehensive spectroscopic and photometric study of pulsating eclipsing binary star AI Hya
Comprehensive spectroscopic and photometric study of pulsating eclipsing binary star AI Hya Open
The pulsating eclipsing binaries are remarkable systems that provide an opportunity to probe the stellar interior and to determine the fundamental stellar parameters precisely. Especially the detached eclipsing binary systems with (a) puls…
View article: The first view of δ Scuti and γ Doradus stars with the TESS mission
The first view of δ Scuti and γ Doradus stars with the TESS mission Open
© 2019 The Author(s) We present the first asteroseismic results for δ Scuti and γ Doradus stars observed in Sectors 1 and 2 of the TESS mission. We utilize the 2-min cadence TESS data for a sample of 117 stars to classify their behaviour r…
View article: Candidate eclipsing binary systems with a Delta Scuti star in Northern TESS field
Candidate eclipsing binary systems with a Delta Scuti star in Northern TESS field Open
Existence of pulsating stars in eclipsing binaries has been known for decades. These types of objects are extremely valuable systems for astronomical studies as they exhibit both eclipsing and pulsation variations. The eclipsing binaries a…
View article: Analysis of TESS field eclipsing binary star V948 Her: a pulsating or non-pulsating star?
Analysis of TESS field eclipsing binary star V948 Her: a pulsating or non-pulsating star? Open
Pulsating stars occupy a significant place in the H-R diagram and it was thought that all stars inside the classical instability strip should pulsate. However, recent studies showed that there are many non-pulsating stars placed inside the…
View article: Mass transfer and tidally tilted pulsation in the Algol-type system TZ Dra
Mass transfer and tidally tilted pulsation in the Algol-type system TZ Dra Open
Oscillating eclipsing Algols (oEAs) are remarkable systems that allow us to determine accurate fundamental stellar parameters (mass, radius) and probe the stellar interiors through pulsations. TZ Dra is an oEA system containing a δ Scuti c…
View article: Analysis of TESS Field Eclipsing Binary Star V948 Her: A Pulsating or Non-pulsating Star?
Analysis of TESS Field Eclipsing Binary Star V948 Her: A Pulsating or Non-pulsating Star? Open
Pulsating stars occupy a significant place in the H-R diagram and it was thought that all stars inside the classical instability strip should pulsate. However, recent studies showed that there are many non-pulsating stars located inside th…
View article: Study of chemically peculiar stars – I. High-resolution spectroscopy and <i>K2</i> photometry of Am stars in the region of M44
Study of chemically peculiar stars – I. High-resolution spectroscopy and <i>K2</i> photometry of Am stars in the region of M44 Open
We present a study based on the high-resolution spectroscopy and K2 space photometry of five chemically peculiar stars in the region of the open cluster M44. The analysis of the high-precision photometric K2 data reveals that the light var…
View article: Study of Chemically Peculiar Stars-I : High-resolution Spectroscopy and K2 Photometry of Am Stars in the Region of M44
Study of Chemically Peculiar Stars-I : High-resolution Spectroscopy and K2 Photometry of Am Stars in the Region of M44 Open
We present a study based on the high-resolution spectroscopy and K2 space photometry of five chemically peculiar stars in the region of the open cluster M44. The analysis of the high-precision photometric K2 data reveals that the light var…
View article: The First Light Curve Solutions and Period Study of BQ Ari
The First Light Curve Solutions and Period Study of BQ Ari Open
The first analysis of the photometric observation in BVR filters of a W UMa type binary system BQ Ari was performed. Light curve analysis was performed using Wilson-Devinney (W-D) code combined with a Monte Carlo (MC) simulation to determi…
View article: A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020
A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020 Open
We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and δ Scuti-type pulsations with a mode frequency of 21.09533 d−1. …
View article: Kepler Binary Stars in the NGC 6819 Open Cluster: KIC 5113146 and KIC 5111815
Kepler Binary Stars in the NGC 6819 Open Cluster: KIC 5113146 and KIC 5111815 Open
In this study, an investigation of two double-lined binary stars KIC 5113146 and KIC 5111815 in the NGC 6819 open cluster is presented based on both photometric and spectroscopic data. Simultaneous analysis of light and radial velocity cur…
View article: The evolutionary status of chemically peculiar eclipsing binary star DV Boo
The evolutionary status of chemically peculiar eclipsing binary star DV Boo Open
Eclipsing binary systems are unique stellar objects to examine and understand stellar evolution and formation. Thanks to these systems, the fundamental stellar parameters (mass, radius) can be obtained very precisely. The existence of meta…
View article: Spectroscopy of a chemically peculair delta scuti-type star: 60 tau
Spectroscopy of a chemically peculair delta scuti-type star: 60 tau Open
In this study, a detailed spectroscopic analysis of 60 Tau is presented. 60 Tau is a Delta Scuti-type pulsating variable and it is also a metallic-lined (Am) star. The pulsation mechanism of Delta Scuti stars have been thought to be well u…
View article: The single-sided pulsator CO Camelopardalis
The single-sided pulsator CO Camelopardalis Open
CO Cam (TIC 160268882) is the second ‘single-sided pulsator’ to be discovered. These are stars where one hemisphere pulsates with a significantly higher amplitude than the other side of the star. CO Cam is a binary star comprised of an Am …
View article: Spectroscopy of hot γ Doradus and A–F hybrid Kepler candidates close to the hot border of the δ Scuti instability strip
Spectroscopy of hot γ Doradus and A–F hybrid Kepler candidates close to the hot border of the δ Scuti instability strip Open
If γ Dor-type pulsations are driven by the convective blocking mechanism, a convective envelope at a sufficient depth is essential. There are several hot γ Dor and hybrid star candidates in which there should not be an adequate convective …