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View article: Prospects of Detecting Rotational Flatness of Exoplanets from Space-based Photometry
Prospects of Detecting Rotational Flatness of Exoplanets from Space-based Photometry Open
In the era of photometry with space-based telescopes, such as CHaracterizing ExOPlanets Satellite, James Webb Space Telescope, PLAnetary Transits and Oscillations of stars, and Atmospheric Remote-sensing Infrared Exoplanet Large-survey, th…
View article: Prospects of detecting rotational flatness of exoplanets from space-based photometry
Prospects of detecting rotational flatness of exoplanets from space-based photometry Open
In the era of photometry with space-based telescopes, such as CHEOPS (CHaracterizing ExOPlanets Satellite), JWST (James Webb Space Telescope), PLATO (PLAnetary Transits and Oscillations of stars), and ARIEL (Atmospheric Remote-sensing Infr…
View article: The Heavy Element Enrichment History of the Universe from Neutron Star Mergers with Habitable Worlds Observatory
The Heavy Element Enrichment History of the Universe from Neutron Star Mergers with Habitable Worlds Observatory Open
Understanding where elements were formed has been a key goal in astrophysics for nearly a century, with answers involving cosmology, stellar burning, and cosmic explosions. Since 1957, the origin of the heaviest elements (formed via the ra…
View article: Probing Internal Structure Through Extremes: The Fastest Rotators Among Hilda and Jovian Trojan Asteroids
Probing Internal Structure Through Extremes: The Fastest Rotators Among Hilda and Jovian Trojan Asteroids Open
The rotational characteristics of small bodies in the Solar System serve as critical constraints on their internal structure, composition, and collisional evolution[1,2]. The break-up rotation rate of asteroids defines an upper bound on th…
View article: Three Fast-spinning Medium-sized Hilda Asteroids Uncovered by TESS
Three Fast-spinning Medium-sized Hilda Asteroids Uncovered by TESS Open
Hilda asteroids, which orbit in a 3:2 resonance with Jupiter, serve as key indicators of dynamical processes in the early solar system. Their spin rates, an important probe of these mechanisms, can constrain their density and collisional e…
View article: Short- and long-term variations of the high mass accretion rate classical T Tauri star DR Tau
Short- and long-term variations of the high mass accretion rate classical T Tauri star DR Tau Open
Context. Classical T Tauri stars are newly formed, low-mass stars, which may display both periodic and random variations in their brightness. These systems are surrounded by a circumstellar disk, from which material falls onto the stellar …
View article: Three fast-spinning medium-sized Hilda asteroids uncovered by TESS
Three fast-spinning medium-sized Hilda asteroids uncovered by TESS Open
Hilda asteroids, which orbit in a 3:2 resonance with Jupiter, serve as key indicators of dynamical processes in the early solar system. Their spin rates, an important probe of these mechanisms, can constrain their density and collisional e…
View article: A theoretical framework for BL Her stars
A theoretical framework for BL Her stars Open
Context. The upcoming Rubin-LSST is expected to revolutionize the field of classical pulsators by offering well-sampled multi-epoch photometric data in multiple wavelengths. Type II Cepheids (T2Cs) exhibit weak or negligible metallicity de…
View article: Detection of oscillation-like patterns in eclipsing binary light curves using neural network-based object detection algorithms
Detection of oscillation-like patterns in eclipsing binary light curves using neural network-based object detection algorithms Open
Aims. The primary aim of this research is to evaluate several convolutional neural network-based object detection algorithms for identifying oscillation-like patterns in light curves of eclipsing binaries. This involved creating a robust d…
View article: Three fast-rotating Jovian trojans identified by TESS set new population density limits
Three fast-rotating Jovian trojans identified by TESS set new population density limits Open
We report on the identification of the three fastest rotating Jovian trojans with reliable population assignments known to date, discovered using light curve data from the Transiting Exoplanet Satellite Survey mission and confirmed by Zwic…
View article: Three fast-rotating Jovian Trojans identified by TESS set new population density limits
Three fast-rotating Jovian Trojans identified by TESS set new population density limits Open
Here we report on the identification of the three fastest rotating Jovian Trojans with reliable population assignment, using light curve data from the Transiting Exoplanet Satellite Survey mission, also confirmed by Zwicky Transient Facili…
View article: Detection of Oscillation-like Patterns in Eclipsing Binary Light Curves using Neural Network-based Object Detection Algorithms
Detection of Oscillation-like Patterns in Eclipsing Binary Light Curves using Neural Network-based Object Detection Algorithms Open
The primary aim of this research is to evaluate several convolutional neural network-based object detection algorithms for identifying oscillation-like patterns in light curves of eclipsing binaries. This involves creating a robust detecti…
View article: A theoretical framework for BL Her stars IV. New period-luminosity relations in the Rubin-LSST filters
A theoretical framework for BL Her stars IV. New period-luminosity relations in the Rubin-LSST filters Open
We present new theoretical light curves in the Rubin-LSST filters for a fine grid of BL Her models computed using MESA-RSP. We also derive new theoretical period-luminosity (PL) and period-Wesenheit (PW) relations in the Rubin-LSST filters…
View article: Background exoplanet candidates in the original Kepler field
Background exoplanet candidates in the original Kepler field Open
Context. During the primary Kepler mission, between 2009 and 2013, about 150,000 pre-selected targets were observed with a 29.42 minute-long cadence. However, a survey of background stars that fall within the field of view (FOV) of the dow…
View article: Exploring Financial Culture and Revenue Planning in Small and Medium-Sized Enterprises and Public Sector Entities
Exploring Financial Culture and Revenue Planning in Small and Medium-Sized Enterprises and Public Sector Entities Open
This study investigates the relationship between financial culture and financial planning, emphasizing their critical impact on organizational success and economic resilience. Financial culture, defined as the combination of financial know…
View article: Validation of the RR Lyrae variables in the Pan-STARRS PS1 3π survey with K2
Validation of the RR Lyrae variables in the Pan-STARRS PS1 3π survey with K2 Open
RR Lyrae variables are old, helium-core burning stars on the horizontal branch that are important tools for tracing the structure of the Galaxy thanks to their high luminosity and their period-luminosity relation. Pan-STARRS observed a lar…
View article: Validation of the RR Lyrae period determination in the Pan-STARRS PS1 3<i>π</i> survey with K2
Validation of the RR Lyrae period determination in the Pan-STARRS PS1 3<i>π</i> survey with K2 Open
Context. The Pan-STARRS 3 π survey has detected hundreds of thousands of variable stars thanks to its coverage and 4-year time span, even though the sampling of the light curves is relatively sparse. These light curves contain only 10–15 d…
View article: On the use of field RR Lyrae as Galactic probes VII. light curve templates in the LSST photometric system
On the use of field RR Lyrae as Galactic probes VII. light curve templates in the LSST photometric system Open
The \textit{Vera C. Rubin} Observatory will start operations in 2025. During the first two years, too few visits per target per band will be available, meaning that mean magnitude measurements of variable stars will not be precise and thus…
View article: On the use of field RR Lyrae as Galactic probes
On the use of field RR Lyrae as Galactic probes Open
Context . The Vera C. Rubin Observatory will start operations in 2025. During its first two years, too few visits per target per band will be available, meaning that the mean magnitude measurements of variable stars will not be precise and…
View article: Considering the incidence rate of RR Lyrae stars with non-radial modes
Considering the incidence rate of RR Lyrae stars with non-radial modes Open
Context . Over recent years, additional low-amplitude non-radial modes have been detected in many first-overtone RR Lyrae stars. These non-radial modes form a characteristic period ratio with the dominant first overtone of around 0.61. The…
View article: Exploring the physical properties of Jupiter Trojans and Hildas with the TESS space telescope
Exploring the physical properties of Jupiter Trojans and Hildas with the TESS space telescope Open
Jovian Trojan and Hilda asteroids are of particular importance because they provide important constraints for Solar System formation and evolution models. Despite their large number, rotational characteristics are known for a relatively li…
View article: The phase curve of the ultra-hot Jupiter WASP-167b as seen by TESS
The phase curve of the ultra-hot Jupiter WASP-167b as seen by TESS Open
Context . Ultra-hot Jupiters (UHJs) orbiting pulsating A/F stars represent an important subset of the exoplanetary demographic. They are excellent candidates for the study of exoplanetary atmospheres, and are astrophysical laboratories for…
View article: On the incidence rate of RR Lyrae stars with non-radial modes
On the incidence rate of RR Lyrae stars with non-radial modes Open
Over the recent years, additional low-amplitude non-radial modes were detected in many of the first-overtone RR Lyrae stars. These non-radial modes form a characteristic period ratio with the dominant first-overtone mode of around 0.61. Th…
View article: Double-Mode RR Lyrae Stars Observed by K2: Analysis of High-Precision Kepler Photometry
Double-Mode RR Lyrae Stars Observed by K2: Analysis of High-Precision Kepler Photometry Open
The results of a Fourier analysis of high-precision Kepler photometry of 75 double-mode RR~Lyrae (RRd) stars observed during NASA's K2 Mission (2014-18) are presented. Seventy-two of the stars are `classical' RRd (cRRd) stars lying along a…
View article: Double-mode RR Lyrae stars observed by <i>K2</i>: analysis of high-precision <i>Kepler</i> photometry
Double-mode RR Lyrae stars observed by <i>K2</i>: analysis of high-precision <i>Kepler</i> photometry Open
The results of a Fourier analysis of high-precision Kepler photometry of 75 double-mode RR Lyrae (RRd) stars observed during NASA’s K2 Mission (2014-18) are presented. Seventy-two of the stars are ‘classical’ RRd (cRRd) stars lying along a…
View article: <i>TESS</i> Cycle 2 observations of roAp stars with 2-min cadence data
<i>TESS</i> Cycle 2 observations of roAp stars with 2-min cadence data Open
We present the results of a systematic search of the Transiting Exoplanet Survey Satellite (TESS) 2-min cadence data for new rapidly oscillating Ap (roAp) stars observed during the Cycle 2 phase of its mission. We find seven new roAp stars…
View article: TESS Cycle 2 observations of roAp stars with 2-min cadence data
TESS Cycle 2 observations of roAp stars with 2-min cadence data Open
We present the results of a systematic search of the Transiting Exoplanet Survey Satellite (TESS) 2-min cadence data for new rapidly oscillating Ap (roAp) stars observed during the Cycle 2 phase of its mission. We find seven new roAp stars…
View article: Rubin Observatory LSST Transients and Variable Stars Roadmap
Rubin Observatory LSST Transients and Variable Stars Roadmap Open
The Vera C. Rubin Legacy Survey of Space and Time (LSST) holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping variability time scales from minutes to a decade. To p…
View article: Temperature-dependent convective parameters for RRc 1D models
Temperature-dependent convective parameters for RRc 1D models Open
Non-linear pulsation modelling of classical variable stars is among the first topics that were developed at the beginning of the computational era. Various developments were made, and many questions were answered in the past 60 yr, and the…
View article: LSST Survey Strategy in the Galactic Plane and Magellanic Clouds
LSST Survey Strategy in the Galactic Plane and Magellanic Clouds Open
Galactic science encompasses a wide range of subjects in the study of the Milky Way and Magellanic Clouds, from young stellar objects to X-ray binaries. Mapping these populations, and exploring transient phenomena within them, are among th…