First-principles investigation of the interaction between pentacene molecules and monolayer transition metal dichalcogenides (2024)
Thesis
Black, E. J. First-principles investigation of the interaction between pentacene molecules and monolayer transition metal dichalcogenides. (Thesis). Keele University. Retrieved from https://keele-repository.worktribe.com/output/1018715

The search for new materials for photonic applications continues to expand, and one promising route is that of van der Waals heterostructures. Assembled layer by layer from atomically thin materials, there are combinations of materials with promising... Read More about First-principles investigation of the interaction between pentacene molecules and monolayer transition metal dichalcogenides.

The fate of massive single stars: exploring the impact of rotation and metallicity (2024)
Thesis
Chambers, C. S. The fate of massive single stars: exploring the impact of rotation and metallicity. (Thesis). Keele University. Retrieved from https://keele-repository.worktribe.com/output/1018847

The fate of massive stars depends largely on the mass and structure of their inner cores, and the composition of their envelopes at death. This is dependent on the mass loss history of the star, which has significant effects on the evolution of massi... Read More about The fate of massive single stars: exploring the impact of rotation and metallicity.

Star Formation History of the Local Group Dwarf Irregular Galaxy, NGC 6822 (2024)
Journal Article
Khatamsaz, F., Abdollahi, M., Abdollahi, H., Javadi, A., & van Loon, J. T. (in press). Star Formation History of the Local Group Dwarf Irregular Galaxy, NGC 6822. Communications of the Byurakan Astrophysical Observatory, 71(2), 394-397. https://doi.org/10.52526/25792776-24.71.2-394

NGC 6822 is an isolated dwarf irregular galaxy in the local group at a distance of ∼ 490 kpc. In this paper, we present the star formation history (SFH) within a field with a radius of ∼ 3 kpc, beyond the optical body of the galaxy ( ∼ 1.2 kpc). We u... Read More about Star Formation History of the Local Group Dwarf Irregular Galaxy, NGC 6822.

Machine Learning Classification of Young Stellar Objects and Evolved Stars in the Magellanic Clouds Using the Probabilistic Random Forest Classifier (2024)
Journal Article
Ghaziasgar, S., Abdollahi, M., Javadi, A., van Loon, J. T., McDonald, I., Oliveira, J., & Khosroshahi, H. G. (in press). Machine Learning Classification of Young Stellar Objects and Evolved Stars in the Magellanic Clouds Using the Probabilistic Random Forest Classifier. Communications of the Byurakan Astrophysical Observatory, 71(2), 377-382. https://doi.org/10.52526/25792776-24.71.2-377

The Magellanic Clouds (MCs) are excellent locations to study stellar dust emission and its contribution to galaxy evolution. Through spectral and photometric classification, MCs can serve as a unique environment for studying stellar evolution and gal... Read More about Machine Learning Classification of Young Stellar Objects and Evolved Stars in the Magellanic Clouds Using the Probabilistic Random Forest Classifier.

Deciphering Galactic Halos: A Detailed Review of Star Formation in NGC 5128 (Cen A) (2024)
Journal Article
Abdollahi, M., Aghdam, S. T., Javadi, A., Hashemi, S. A., van Loon, J. T., Khosroshahi, H., …Saberi, M. (in press). Deciphering Galactic Halos: A Detailed Review of Star Formation in NGC 5128 (Cen A). Communications of the Byurakan Astrophysical Observatory, 71(2), 345-350. https://doi.org/10.52526/25792776-24.71.2-345

NGC 5128 (Centaurus A), the closest giant elliptical galaxy outside the Local Group to the Milky Way, is one of the brightest extragalactic radio sources. It is distinguished by a prominent dust lane and powerful jets, driven by a supermassive black... Read More about Deciphering Galactic Halos: A Detailed Review of Star Formation in NGC 5128 (Cen A).

A Deep Dive into Stellar Populations in M33’s Central Region: Near-Infrared Observations and Analysis (2024)
Journal Article
Alizadeh, M., Javadi, A., van Loon, J. T., Abedini, Y., Abdollahi, H., & Seifipour, S. (in press). A Deep Dive into Stellar Populations in M33’s Central Region: Near-Infrared Observations and Analysis. Communications of the Byurakan Astrophysical Observatory, 71(2), 389-393. https://doi.org/10.52526/25792776-24.71.2-389

Data collection was conducted using three cameras on the UK Infrared Telescope (UKIRT) from 2003 to 2007. Throughout three nights in August 2005, the UKIRT Fast-Track Imager (UFTI) made K-band observations. The J and H bands Wide Field Camera (WFCAM)... Read More about A Deep Dive into Stellar Populations in M33’s Central Region: Near-Infrared Observations and Analysis.

Detection of the Long Period Variable Stars of And II Dwarf Satellite galaxy (2024)
Journal Article
Abdollahi, H., Javadi, A., van Loon, J. T., McDonald, I., Abdollahi, M., Saremi, E., …Mahani, H. (in press). Detection of the Long Period Variable Stars of And II Dwarf Satellite galaxy. Communications of the Byurakan Astrophysical Observatory, 71(2), 383-388. https://doi.org/10.52526/25792776-24.71.2-383

We conducted an extensive study of the spheroidal dwarf satellite galaxies around the Andromeda galaxy to produce an extensive catalog of LPV stars. The optical monitoring project consists of 55 dwarf galaxies and four globular clusters that are memb... Read More about Detection of the Long Period Variable Stars of And II Dwarf Satellite galaxy.

Near-infrared spectroscopy of the LMC recurrent nova LMCN 1968-12a (2024)
Journal Article
Evans, A., Banerjee, D. P. K., Geballe, T. R., Polin, A., Hsiao, E. Y., Page, K. L., …Starrfield, S. (2024). Near-infrared spectroscopy of the LMC recurrent nova LMCN 1968-12a. Monthly Notices of the Royal Astronomical Society, 536(2), 1710-1717. https://doi.org/10.1093/mnras/stae2711

We have obtained near-infrared (0.80–2.45 $\, \mu$m) spectra of the recurrent nova LMCN 1968-12a on two occasions during its 2024 August eruption. This is the first near-infrared spectroscopy of an extragalactic nova. The initial spectrum, on day 8.4... Read More about Near-infrared spectroscopy of the LMC recurrent nova LMCN 1968-12a.

Stellar Evolution and Convection in 3D Hydrodynamic Simulations of a Complete Burning Phase (2024)
Journal Article
Rizzuti, F., Hirschi, R., Varma, V., Arnett, W. D., Georgy, C., Meakin, C., …Rauscher, T. (in press). Stellar Evolution and Convection in 3D Hydrodynamic Simulations of a Complete Burning Phase. Galaxies, 12(6), 87. https://doi.org/10.3390/galaxies12060087

Our understanding of stellar evolution and nucleosynthesis is limited by the uncertainties coming from the complex multi-dimensional processes in stellar interiors, such as convection and nuclear burning. Three-dimensional stellar models can improve... Read More about Stellar Evolution and Convection in 3D Hydrodynamic Simulations of a Complete Burning Phase.

Fundamental parameters of very low mass stars in eclipsing binary systems (2024)
Thesis
Fitzpatrick, E. Fundamental parameters of very low mass stars in eclipsing binary systems. (Thesis). Keele University. Retrieved from https://keele-repository.worktribe.com/output/956373

Photometry of binary star and extrasolar planet transits offer an opportunity to characterise their components and test stellar models. When investigating exoplanets, it is important properly understand the host star otherwise large systematic errors... Read More about Fundamental parameters of very low mass stars in eclipsing binary systems.

Pre-solar grains from novae and "Born-again giants" (2024)
Book Chapter
Evans, A., & Gehrz, R. (2024). Pre-solar grains from novae and "Born-again giants". In Presolar grains in extra-terrestrial materials. Elsevier

We review the properties of dust formed during classical nova eruptions and the Very Late Thermal Pulses (VLTPs) that occur during the later stages of post-Asymptotic Giant Branch evolution of low-mass stars. In both cases, carbon and hydrocarbon dus... Read More about Pre-solar grains from novae and "Born-again giants".

BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts (2024)
Journal Article
Freckelton, A. V., Sebastian, D., Mortier, A., Triaud, A. H. M. J., Maxted, P. F. L., Acuña, L., …Willett, E. (2024). BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts. Monthly Notices of the Royal Astronomical Society, 531(4), 4085-4098. https://doi.org/10.1093/mnras/stae1405

Planets orbiting binary systems are relatively unexplored compared to those around single stars. Detections of circumbinary planets and planetary systems offer a first detailed view into our understanding of circumbinary planet formation and dynamica... Read More about BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts.

Exoplanet radius measurements for short-period exoplanets observed by the CHEOPS mission (2024)
Thesis
Harris, B. M. (2024). Exoplanet radius measurements for short-period exoplanets observed by the CHEOPS mission. (Thesis). Keele University. Retrieved from https://keele-repository.worktribe.com/output/775271

Context. Scheduling observing time for the CHEOPS mission leaves short gaps in which the telescope goes unused. If data collected during these gaps provided quality results, they could be utilised to make observing time more efficient.
Aims. The ai... Read More about Exoplanet radius measurements for short-period exoplanets observed by the CHEOPS mission.

Physical properties of eclipsing binaries containing intermediate-mass pulsators or low-mass stars (2024)
Thesis
Jennings, Z. P. S. (2024). Physical properties of eclipsing binaries containing intermediate-mass pulsators or low-mass stars. (Thesis). Keele University. Retrieved from https://keele-repository.worktribe.com/output/775631

Precise stellar parameter measurements are crucial for improving our theoretical understanding of stellar structure. They help quantify model errors and uncertainties and provide vital constraints for interpreting observed phenomena, such as radius i... Read More about Physical properties of eclipsing binaries containing intermediate-mass pulsators or low-mass stars.

Hydrodynamic simulations of convection and nucleosynthesis in the late phases of massive stars to constrain and guide stellar evolution theory (2023)
Thesis
Rizzuti, F. (2023). Hydrodynamic simulations of convection and nucleosynthesis in the late phases of massive stars to constrain and guide stellar evolution theory. (Thesis). Keele University. Retrieved from https://keele-repository.worktribe.com/output/674565

The present knowledge of stellar evolution is still limited today by large uncertainties that derive from the complex multi-dimensional processes occurring in stars. Among them, the turbulent motions of the stellar fluid control the size and evolutio... Read More about Hydrodynamic simulations of convection and nucleosynthesis in the late phases of massive stars to constrain and guide stellar evolution theory.

The dynamics of star formation in the local Milky Way as traced by OB associations (2023)
Thesis
Quintana Isasi, A. L. P. (2023). The dynamics of star formation in the local Milky Way as traced by OB associations. (Thesis). Keele University

OB associations are gravitationally unbound, low-density groups of young stars delineated by bright OB stars. At the intersection of star formation and Galactic structure, they are important across many areas of astronomy. However, most historical OB... Read More about The dynamics of star formation in the local Milky Way as traced by OB associations.

The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog (2023)
Journal Article
Wright, N. J., Drake, J. J., Guarcello, M. G., Aldcroft, T. L., Kashyap, V. L., Damiani, F., …Fruscione, A. (2023). The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog. Astrophysical Journal Supplement, 269(1), Article 7. https://doi.org/10.3847/1538-4365/acdd62

The Cygnus OB2 association is the largest concentration of young and massive stars within 2 kpc of the Sun, including an estimated ∼65 O-type stars and hundreds of OB stars. The Chandra Cygnus OB2 Legacy Survey is a large imaging program undertaken w... Read More about The Chandra Cygnus OB2 Legacy Survey: Design and X-Ray Point-source Catalog.

Simulating the Sensitivity to Stellar Point Sources of Chandra X-Ray Observations (2023)
Journal Article
Wright, N. J., Drake, J. J., Guarcello, M. G., Kashyap, V. L., & Zezas, A. (2023). Simulating the Sensitivity to Stellar Point Sources of Chandra X-Ray Observations. Astrophysical Journal Supplement, 269(1), Article 8. https://doi.org/10.3847/1538-4365/acdd63

The Chandra Cygnus OB2 Legacy Survey is a wide and deep X-ray survey of the nearby and massive Cygnus OB2 association. The survey has detected ∼8000 X-ray sources, the majority of which are pre-main-sequence X-ray-emitting young stars in the associat... Read More about Simulating the Sensitivity to Stellar Point Sources of Chandra X-Ray Observations.

Optical and Infrared Counterparts of the X-Ray Sources Detected in the Chandra Cygnus OB2 Legacy Survey (2023)
Journal Article
Guarcello, M. G., Drake, J. J., Wright, N. J., Naylor, T., Flaccomio, E., Kashyap, V. L., & García-Alvarez, D. (2023). Optical and Infrared Counterparts of the X-Ray Sources Detected in the Chandra Cygnus OB2 Legacy Survey. Astrophysical Journal Supplement, 269(1), 9. https://doi.org/10.3847/1538-4365/acdd64

The young massive OB association Cygnus OB2, in the Cygnus X complex, is the closest (∼1400 pc) star-forming region to the Sun hosting thousands of young low-mass stars and up to 1000 OB stars, among which are some of the most massive stars known in... Read More about Optical and Infrared Counterparts of the X-Ray Sources Detected in the Chandra Cygnus OB2 Legacy Survey.

A new method for spatially resolving the turbulence driving mixture in the ISM with application to the Small Magellanic Cloud (2023)
Journal Article
Gerrard, I. A., Federrath, C., Pingel, N. M., McClure-Griffiths, N. M., Marchal, A., Joncas, G., …Lynn, C. (2023). A new method for spatially resolving the turbulence driving mixture in the ISM with application to the Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 526(1), https://doi.org/10.1093/mnras/stad2718

Turbulence plays a crucial role in shaping the structure of the interstellar medium. The ratio of the three-dimensional density contrast ($\sigma _{\rho /\rho _0}$) to the turbulent sonic Mach number ($\mathcal {M}$) of an isothermal, compressible ga... Read More about A new method for spatially resolving the turbulence driving mixture in the ISM with application to the Small Magellanic Cloud.