A5023560563- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- Astronomical Observations and Instrumentation
- Geomagnetism and Paleomagnetism Studies
- Astrophysics and Star Formation Studies
- Scientific Research and Discoveries
- Galaxies: Formation, Evolution, Phenomena
- Geophysics and Gravity Measurements
- Cell Image Analysis Techniques
- Astrophysical Phenomena and Observations
- Distributed and Parallel Computing Systems
- Scientific Computing and Data Management
- Relativity and Gravitational Theory
- Earth Systems and Cosmic Evolution
- Complex Systems and Time Series Analysis
- Planetary Science and Exploration
- Time Series Analysis and Forecasting
- Software Engineering and Design Patterns
- Pulsars and Gravitational Waves Research
- Remote Sensing in Agriculture
- Genetics, Bioinformatics, and Biomedical Research
- Advanced Fluorescence Microscopy Techniques
- Solar and Space Plasma Dynamics
University of Cambridge
2020-2023
Abstract A complete understanding of the central stars planetary nebulae (CSPNe) remains elusive. Over past several decades, time-series photometry CSPNe has yielded significant results including, but not limited to, discoveries nearly 100 binary systems, insights into pulsations and winds in young white dwarfs, studies undergoing very late thermal pulses. We have undertaken a systematic study optical photometric variability cataloged CSPNe, using light curves from Zwicky Transient Facility...
Context. Planetary nebulae (PNe) are a brief but important phase of stellar evolution. The study Galactic PNe has historically been hampered by uncertain distances, the parallaxes PN central stars (CSPNe) measured Gaia improving situation. Aims. Gaia's Early Data Release 3 (EDR3) offers higher astrometric precision and greater completeness compared to previous releases. Taking advantage these improvements requires that CSPNe in catalogue be accurately identified. Methods. We applied our...
With the aim of producing a 3D representation tumors, imaging and molecular annotation xenografts tumors (IMAXT) uses large variety modalities in order to acquire tumor samples produce map every cell its host environment. volume data produced project, we developed automatic workflows analysis pipelines. We introduce research methodology where scientists connect cloud environment perform close are located, instead bringing their local computers. Here, present infrastructure, discuss unique...
Context: Accurate distance measurements are fundamental to the study of Planetary Nebulae (PNe) but have long been elusive. The most accurate and model-independent for galactic PNe come from trigonometric parallaxes their central stars, which were only available a few tens objects prior Gaia mission. Aims: identification PN stars in source catalogues is critical prerequisite leveraging unprecedented scope precision measured by Gaia. Our aim build complete sample star detections with minimal...
Close binary interactions perform a key role in the formation and shaping of planetary nebulae (PNe). However only small fraction Galactic PNe are known to host close systems. Many such systems detectable through photometric variability. We searched recently published epoch photometry data from Gaia DR3 for nebula central stars with periodic variability indicative binarity, uncovering four previously unknown binaries.
Abstract With the aim of producing a 3D representation tumours, IMAXT uses large variety modalities in order to acquire tumour samples and produce map every cell its host environment. volume data produced project we develop automatic workflows analysis pipelines introduce research methodology where scientists connect cloud environment perform close are located instead bringing their local computers. Here present infrastructure, discuss unique computational challenges describe chains...
Context. Many if not most planetary nebulae (PNe) are now thought to be the outcome of binary evolutionary scenarios. However, only a few percent PNe in Milky Way known host systems. The high-precision repeated observing and long time baseline Gaia make it well suited for detecting new close binaries through photometric variability. Aims. We aim find central stars (CSPNe) using data from mission, building towards statistically significant sample post-common envelope, CSPNe. Methods. As vast...
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history last, mass-losing phases 90 percent stars initially more massive than Sun. Here, we analyse James Webb Space Telescope (JWST) Early Release Observation (ERO) images PN NGC3132. A structured, extended H2 halo surrounding an ionised central bubble is imprinted spiral structures, likely shaped by low-mass companion orbiting star at 40-60 AU. The also reveal mid-IR excess interpreted as dusty disk,...
The Planetary Nebula Luminosity Function (PNLF) remains an important extragalactic distance indicator despite a still limited understanding of its most feature - the bright cut-off. External galaxies benefit from consistent and extinction, which makes determining PNLF easier but detailed study individual objects much more difficult. Now, advent parallaxes Gaia mission has dramatically improved estimates to planetary nebulae (PNe) in Milky Way. We have acquired ground-based narrowband imagery...