StarXiv: a podcast discussing the latest astronomy papers

Michelle and Payel
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  • ASTRONOMY
  • UPDATED BIWEEKLY

Hello! Welcome to the StarXiv, hosted by Dr Michelle Collins and Dr Payel Das. This is a biweekly podcast that delves into the latest astronomy papers & results from the arXiv. Michelle and Payel are astronomers at the University of Surrey. They love research, but struggle to find time to read a lot of papers. They’re hoping this podcast fixes that. The beautiful logo is designed by Izzy Gray, a PhD student currently studying at the University of Surrey.

  1. 2D AGO

    Episode 27: Making a Milky Way, searching for dwarfs, and elusive black holes

    This episode, Payel and Nicole discuss how to generate alpha-bimodalities in Milky-Way-like galaxies without major mergers or radial migration, a new search for radio emission from the elusive intermediate-mass black hole of Omega Centauri , detailed chemical DNA measurements of the oldest stars in the Small Magellanic Cloud, and searching for dwarfs using HI measurements. Check out the papers we discussed below: Portrait of a Galaxy on FIRE: Is the $α$-bimodality a natural consequence of inside-out disc growth in a hierarchical formation scenario? - Maria Benito No evidence for accretion around the intermediate-mass black hole in Omega Centauri - Angiraben D. Mahida The chemical DNA of the Magellanic Clouds V. R-process dominates neutron capture elements production in the oldest SMC stars - Lorenzo Santarelli TiNy Titans HI: Discovering Satellites via HI Gas in an Isolated, Compact Group of Dwarf Galaxies - Sabrina Stierwalt

    32 min

  2. DEC 8

    Episode 26: A tail of tales, little galaxies, and starspots

    This episode, Payel and Nicole discuss streamer-like structures around protostellar sources, a multiply imaged Little Red Dot with an apparent blue companion, age and metallicity of low-mass galaxies, starspots and flares, and exploring the ultra-faint dwarf Bootes I using JWST and HST. Check out the papers we discussed below: A tale of three tails: A misaligned streamer and mysterious structures around [BHB2007]1 - Aashish Gupta VENUS: When Red meets Blue -- A multiply imaged Little Red Dot with an apparent blue companion behind the galaxy cluster Abell 383 - Miriam Golubchik Age and metallicity of low-mass galaxies: from their centres to their stellar halos - Elisa A. Tau Starspots and Flares are Generally Not Correlated - Andy B. Zhang Exploring the ultra-faint dwarf Bootes I using JWST and HST: Metallicity distribution and binaries - Fabrizio Muratore

    31 min

  3. NOV 24

    Episode 25: Extragalactic exoplanets, simulating individual stars, and galaxy mergers as cosmic ray factories

    This episode, Michelle, Payel, and Nicole discuss simulating individual stars, exoplanets born outside of the Milky Way, the intracluster medium as a window to past merging activity, the chemical versus kinematic thin and thick discs of the Milky Way, early formation of supermassive black holes, and galaxy mergers as cosmic ray sources. Check out the papers we discussed below EDGE-INFERNO: How chemical enrichment assumptions impact the individual stars of a simulated ultra-faint dwarf galaxy - Eric Anderson Searching for Exoplanets Born Outside the Milky Way: VOYAGERS Survey Design - Robert Aloisi The Quiescent Merging Nature of the Coma Cluster Revealed by ICM Velocity Structure - Efrain Gatuzz Impact of selection criteria on the structural parameters of the Galactic thin and thick discs - Simon Alinder Early Formation of Supermassive Black Holes via Dark Star Gravitational Instability - Katherine Freese Galaxy Mergers Collectively Illuminate the γ-Ray Sky - Jaya Doliya

    43 min

  4. NOV 12

    Episode 24 - Strong lenses, Solar Flares and young, high alpha stars

    This episode, Michelle and Payel discuss the Solar birth cluster, young stars with high alpha abundances, the formation of intermediate mass black holes, decelerated expansion of the Universe, strong lens detection in Euclid and predicting solar flares. Check out the papers we discussed below: Spectroscopic Follow-up of Young High-α Dwarf Star Candidates: Still Likely Genuinely Young - Yuxi Lu Limits on Stellar Flybys in the Solar Birth Cluster - Amir Siraj, Christopher F. Chyba, Scott Tremaine Strong Progenitor Age-bias in Supernova Cosmology. II. Alignment with DESI BAO and Signs of a Non-Accelerating Universe - Junhyuk Son Seeds to success: growing heavy black holes in dense star clusters - Lavinia Paiella Solar flare forecasting with foundational transformer models across image, video, and time-series modalities - S. Riggi et al. Euclid Quick Data Release (Q1). Searching for giant gravitational arcs in galaxy clusters with mask region-based convolutional neural networks - Euclid Collaboration, L. Bazzanini, et al.

    36 min

  5. OCT 27

    Episode 23 - Failed galaxies, faint galaxies, and the proto-Galaxy

    In this episode, Michelle and Nicole discuss what sets the chemistry of the faintest galaxies and RR-Lyrae stars, how to trace the proto-Galaxy, why some galaxies fail to thrive, can quasi-stars can explain Little Red Dots, and whether UNIONS 1 is a galaxy or a star cluster. Tune in below, on Spotify, Apple or wherever you get your podcasts.

    42 min

  6. OCT 13

    Episode 22 - ORCs, rings, and Galactic histories

    In this episode, Payel and Nicole discuss what happens to the metallicity gradient of a satellite galaxy after it merges with its host, the existence of intermediate-age RR lyrae and radio rings, the possibility of determining the history of the inner Milky Way from radially migrated stars, and the possibility of finding more Einstein rings using a new approach that utilises both spectra and images. From order to chaos: the blurred out metallicity gradient of the Gaia-Enceladus/Sausage progenitor - Andreia Carillo et al. First direct detection of an RR Lyrae star conclusively associated with an intermediate-age cluster - Cecilia Mateu et al. RAD@home discovery of extragalactic radio rings and odd radio circles: clues to their origins - Ananda Hota et al. A New Way to Discover Strong Gravitational Lenses: Pair-wise Spectroscopic Search from DESI DR1 - Yuan-Ming Hsu et al. Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal): IV. On the inner Milky Way stellar age distribution - Tomás Ruiz-Lara et al.

    37 min
  7. Episode 21 - Mercury, chemistry and quasi periodic eruptions 

    SEP 29

    Episode 21 - Mercury, chemistry and quasi periodic eruptions 

    In this episode, Michelle and Nicole discuss merger debris around a distant spiral galaxy, metal-mixing around pop III stars, quasi-periodic eruptions in Ansky, relic galaxies, Mercury's magnetosphere and second generation stars in globular clusters. Listen below, on Spotify, Apple Podcasts or wherever you get your podcasts.

    38 min
  8. Episode 20 - Dark galaxies, black holes, star formation and life in the faintest galaxies?

    SEP 15

    Episode 20 - Dark galaxies, black holes, star formation and life in the faintest galaxies?

    In this episode of the StarXiv Michelle and Payel talk about very massive and less massive black holes, the possibility of feedback free star formation, dark galaxies, runaway dwarf galaxies and the chance of life in the faintest galaxies. Check out the papers below! AGN-heated dust revealed in "Little Red Dots - I Delvecchio et al. Is feedback-free star formation possible? - A. Ferrara et al. The First RELHIC? Cloud-9 is a Starless Gas Cloud - Gangadeep Anand et al. An isolated early-type dwarf galaxy that ran away from the group environment - Sanjaya Paudel et al. Are Local Group Dwarf Spheroidal Galaxies the First Safe Planet-hosting Environments? - Stefano Ciabattini, Stefania Salvadori, Leonardo Testi New gravitational-wave data support a bimodal black-hole mass

    33 min
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About

Hello! Welcome to the StarXiv, hosted by Dr Michelle Collins and Dr Payel Das. This is a biweekly podcast that delves into the latest astronomy papers & results from the arXiv. Michelle and Payel are astronomers at the University of Surrey. They love research, but struggle to find time to read a lot of papers. They’re hoping this podcast fixes that. The beautiful logo is designed by Izzy Gray, a PhD student currently studying at the University of Surrey.

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