Outputs (263)

Digging deeper into the dense Galactic globular cluster Terzan 5 with electron-multiplying CCDs: Variable star detection and new discoveries (2024)
Journal Article
Figuera Jaimes, R., Catelan, M., Horne, K., Skottfelt, J., Snodgrass, C., Dominik, M., …Rahvar, S. (2024). Digging deeper into the dense Galactic globular cluster Terzan 5 with electron-multiplying CCDs: Variable star detection and new discoveries. Astronomy & Astrophysics, 689, Article A108. https://doi.org/10.1051/0004-6361/202347406

Context. High frame-rate imaging was employed to mitigate the effects of atmospheric turbulence (seeing) in observations of globular cluster Terzan 5.

Aims. High-precision time-series photometry with the highest angular resolution so far has been... Read More about Digging deeper into the dense Galactic globular cluster Terzan 5 with electron-multiplying CCDs: Variable star detection and new discoveries.

Rediscussion of eclipsing binaries. Paper XIX. The long-period solar-type system V454 Aurigae (2024)
Journal Article
Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XIX. The long-period solar-type system V454 Aurigae. Observatory, 144(1301), https://doi.org/10.48550/arXiv.2404.19443

V454 Aur is an eclipsing binary system containing two solar- type stars on an orbit of relatively long period (P P = 2702 d) and large eccentricity (e e = 0381). Eclipses were detected using data from the Hipparcos satellite, and a high-quality doubl... Read More about Rediscussion of eclipsing binaries. Paper XIX. The long-period solar-type system V454 Aurigae.

Rediscussion of eclipsing binaries. Paper XX. HO Tel checkout (2024)
Journal Article
Southqorth, J. (2024). Rediscussion of eclipsing binaries. Paper XX. HO Tel checkout. Observatory, 144(1302), https://doi.org/10.48550/arXiv.2408.12955

We present a detailed analysis of the detached eclipsing binary system HO Telescopii, which contains two A-type stars in a circular orbit of period 1.613 d. We use light curves from the Transiting Exoplanet Survey Satellite (TESS), which observed HO... Read More about Rediscussion of eclipsing binaries. Paper XX. HO Tel checkout.

Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations (2024)
Journal Article
Jennings, Z., Southworth, J., Rappaport, S. A., Borkovits, T., Handler, G., & Kurtz, D. W. (in press). Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations. Monthly Notices of the Royal Astronomical Society, Article stae1879. https://doi.org/10.1093/mnras/stae1879

Stellar theory enables us to understand the properties of stars at different stages of their evolution, and contributes to other fields of astrophysics such as galactic and exoplanet studies. Assessing the accuracy of stellar theories necessitates hi... Read More about Characterization of the δ Scuti eclipsing binary KIC 4851217 and its tertiary companion as well as detection of tidally tilted pulsations.

Rediscussion of eclipsing binaries. Paper XVIII. The F-type system OO Pegasi (2024)
Journal Article
Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XVIII. The F-type system OO Pegasi. Observatory, 144(1300),

OO Peg is a detached eclipsing binary system containing two late-A-type stars in a circular orbit with a period of 2.985 d. Using published spectroscopic results and a light curve from the Transiting Exoplanet Survey Satellite (TESS) we determine the... Read More about Rediscussion of eclipsing binaries. Paper XVIII. The F-type system OO Pegasi.

The GAPS Programme at TNG: LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system (2024)
Journal Article
Basilicata, M., Giacobbe, P., Bonomo, A. S., Scandariato, G., Brogi, M., Singh, V., …Turrini, D. (2024). The GAPS Programme at TNG: LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system. Astronomy & Astrophysics, 686, Article A127. https://doi.org/10.1051/0004-6361/202347659

Context. The atmospheric characterisation of hot and warm Neptune-size exoplanets is challenging mainly due to their relatively small radius and atmospheric scale height, which reduce the amplitude of atmospheric spectral features. The warm-Neptune H... Read More about The GAPS Programme at TNG: LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system.

Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and transit time variations of the HATS-2 planetary system (2024)
Journal Article
Biagiotti, F., Mancini, L., Southworth, J., Tregloan-Reed, J., Naponiello, L., Jørgensen, U. G., …Vignes, J.-P. (2024). Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and transit time variations of the HATS-2 planetary system. Astronomy & Astrophysics, 685, Article A131. https://doi.org/10.1051/0004-6361/202347872

Aims. Our aim in this paper is to refine the orbital and physical parameters of the HATS-2 planetary system and study transit timing variations and atmospheric composition thanks to transit observations that span more than 10 yr and that were collect... Read More about Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and transit time variations of the HATS-2 planetary system.

Rediscussion of eclipsing binaries. Paper XVII. The F-type twin system CW Eridani (2024)
Journal Article
Overall, S., & Southworth, J. (2024). Rediscussion of eclipsing binaries. Paper XVII. The F-type twin system CW Eridani. Observatory, 144(1299),

CW Eri is a detached eclipsing binary system of two F-type stars with an orbital period of 2728 d. Light-curves from two sectors of observations with the Transiting Exoplanet Survey Satellite (TESS) and previously published radial-velocity data are a... Read More about Rediscussion of eclipsing binaries. Paper XVII. The F-type twin system CW Eridani.

Looking for timing variations in the transits of 16 exoplanets (2024)
Journal Article
Yalçınkaya, S., Esmer, E. M., Baştürk, Ö., Muhaymin, A., Kutluay, A. C., Silistre, D. İ., …Yeşilyaprak, C. (in press). Looking for timing variations in the transits of 16 exoplanets. Monthly Notices of the Royal Astronomical Society, 530(3), 2475–2495. https://doi.org/10.1093/mnras/stae854

We update the ephemerides of 16 transiting exoplanets using our ground-based observations, new TESS data, and previously published observations including those of amateur astronomers. All these light curves were modeled by making use of a set of quan... Read More about Looking for timing variations in the transits of 16 exoplanets.

Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties (2024)
Journal Article
Tkachenko, A., Pavlovski, K., Serebriakova, N., Bowman, D. M., IJspeert, L., Gebruers, S., & Southworth, J. (2024). Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties. Astronomy & Astrophysics, 683, Article A252. https://doi.org/10.1051/0004-6361/202347793

Context. Eclipsing spectroscopic double-lined binaries are the prime source of precise and accurate measurements of masses and radii of stars. These measurements provide a stringent test for models of stellar evolution that are consistently reported... Read More about Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties.