Search Publications
Discovery of pulsating components in eclipsing binary systems through the TESS light curves: the cases of CPD-30 740, HD 97329, V1637 Ori and TYC 683-640-1
Ulaş, Burak; Ulusoy, Ceren; Erkan, Naci +2 more
We present the first evidence for the pulsations of primary components of four eclipsing binary systems. The TESS light curves of the targets are analyzed, the light and the absolute parameters are derived. Fourier analyses are applied to the residual data subtracted from the binary models to reveal the pulsational characteristics of the primaries…
Updated fundamental parameters of the old open cluster NGC 188 based on G a i a
Gao, Xinhua; Fang, Dan
This paper revisits fundamental properties of the old open cluster NGC 188 based on more reliable cluster members in
Theoretical mass-luminosity relations in Gaia G-band
Malkov, Oleg; Kovaleva, Dana; Zhukov, Aleksandr +1 more
We have analyzed the retrieval of the relation between mass and absolute Gaia G magnitude as obtained from theoretical models by Bressan et al. (Mon. Not. R. Astron. Soc. 427:127, 2012) for the stars of different luminosity classes. For subgiant and main-sequence stars, we provide approximate analytical direct and inverse relations based on the mo…
Timing and spectral studies of the X-ray pulsar 2S 1417–624 during the outburst in 2021
Mandal, Manoj; Pal, Sabyasachi
We study the timing and spectral properties of the X-ray pulsar 2S 1417–624 during the recent outburst in January 2021 based on the Neutron Star Interior Composition Explorer (NICER) observation. We also used some early data from the 2018 outburst to compare different temporal and spectral properties. The evolution of the spin period and pulsed fl…
Interacting planetary nebulae III: verification and galactic population based on the measurements of Gaia EDR3
Ali, A.; Mindil, A.; Mohery, M. +1 more
The phenomenon of interaction between planetary nebulae (PNe) and the interstellar medium (ISM) is one of the significant issues in the field of astrophysics. The main objective of this paper is to verify the interaction process for objects that have been known as interacting PNe (IPNe) in the literature. This study is based on parallax and proper…
Age-velocity relations with GALEXF U V
Murray-Clay, Ruth; Crandall, Sara; Smith, Graeme H. +3 more
A relationship between chromospheric activity and age is calibrated for FGK dwarf stars using GALEX
Mass evaluation for red giant stars based on the spectroscopically determined atmospheric parameters
Takeda, Yoichi
The mass (
Red giant branch bump brightness in 7 metal-poor globular clusters obtained with GAIA DR2
Nie, Jundan; Wu, Tao; Pietrinferni, Adriano +10 more
The identification of the red giant branch bump brightness in metal-poor globular clusters is important for low-mass stellar evolution. The release of Gaia DR2 prompted us to revisit the red giant branch bump (RGBB) in galactic globular clusters. We apply a popular nonparametric density estimation approach, kernel density estimation (KDE), to expl…