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PODCAST

StarXiv: a podcast discussing the latest astronomy papers

Michelle and Payel

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.

science astronomy

All Episodes

41:42

Episode 23 - Failed galaxies, faint galaxies, and the...

StarXiv: a podcast discussing the latest astronomy... ·

2025/10/27

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.

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37:05

Episode 22 - ORCs, rings, and Galactic histories

StarXiv: a podcast discussing the latest astronomy... ·

2025/10/13

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 -

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37:37

Episode 21 - Mercury, chemistry and quasi periodic...

StarXiv: a podcast discussing the latest astronomy... ·

2025/09/29

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.

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33:02

Episode 20 - Dark galaxies, black holes, star...

StarXiv: a podcast discussing the latest astronomy... ·

2025/09/15

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

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36:09

Episode 19 - Peering into the Local Universe, distant...

StarXiv: a podcast discussing the latest astronomy... ·

2025/09/01

This episode, Michelle and Payel reunite to discuss the chemistry of nearby M-dwarf stars, where the majority of stars form in the Milky Way, whether giant planets naturally form at large distances from their hosts, extending the search for supermassive black holes and the search for alien technosignatures. Check out the papers we discussed below!The origin of extreme N-emitters in star-forming galaxies at z<0.5 with DESI DR1 - Souradeep Bhattacharya & Chiaki KobayashiHow many stars form in

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38:55

Episode 18 - disks, disks and more disks!

StarXiv: a podcast discussing the latest astronomy... ·

2025/08/18

In this episode, Michelle and Nicole dissect 5 papers, and accidentally find a common theme: disks! Whether in low mass galaxies, giant low surface brightness galaxies, the rotation curves of spirals or the natal environment of planetary systems, disks really are all around us. They also discuss the differences in chemistries between globular clusters that have been accreted or formed in-situ, just for a little bit of balance. Check out the episode below, on Spotify, Apple podcasts or wherever you

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38:15

Episode 17 - detecting dark matter, unusual black...

StarXiv: a podcast discussing the latest astronomy... ·

2025/08/04

In this episode, Michelle and Payel discuss the claimed detection of a starless dark matter subhalo, speedy, puffy white dwarfs, super massive black holes and how to form and grow them, smaller black holes and how to merge them, and star clusters in the Sparkler galaxy. Listen below, on Spotify, Apple podcasts or wherever you get your podcast.

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35:31

Episode 16 - interstellar visitors, molten planets...

StarXiv: a podcast discussing the latest astronomy... ·

2025/07/21

In this episode, Michelle and Payel squash in more papers than ever, as Michelle delves into a flurry of papers about new newly discovered interstellar comet: 3I/ATLAS. They also discuss what sets the metallicities of the faintest galaxies, how nitrogen enrichment relates to gas density, the molten properties of a new ultra-short period planets, and how to find 'dak' galaxies! Find the papers we discuss in this episode below!What Sets the Metallicity of Ultra-Faint Dwarfs? - Vance Wheeler et

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39:26

Episode 15 – Flare-inducing planets, avoiding...

StarXiv: a podcast discussing the latest astronomy... ·

2025/07/07

This episode, Michelle is back and she and Payel discuss long period pulsars, population III galaxies, latent variables in Galactic archaeology, accreted globular clusters, planets that cause their star to flare and avoiding photo0z catastrophes. Listen below, on Spotify, Apple podcasts or wherever you get your podcasts.Check out the papers we discussed this episode below!Metal-polluted PopIII galaxies and How to Find Them – Elka Rusta et al.Close-in planet induces flares on its host star –

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39:21

Episode 14 - A cosmic owl, misaligned planetary...

StarXiv: a podcast discussing the latest astronomy... ·

2025/06/23

In this episode, we had Payel and Nicole filling in for Michelle who’s away on holiday. Nicole is a PhD student, also at the University of Surrey Astrophysics research group. They discuss the direct detection of HI beyond the local universe, how the Milky Way seems unusually cold, a planetary system with two misaligned planets, detecting stars of common origin through the ratio of alpha elements produced through hydrostatic channels to those produced through explosive ones, twin collisional-ring

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34:07

Episode 13 - Missing Europium, Pluto's craters,...

StarXiv: a podcast discussing the latest astronomy... ·

2025/06/09

In this episode, Michelle and Payel discuss why dark matter halos have a Universal density profile, how to age-date Pluto's surface with craters, delayed Pop III star formation, dwarf candidates in the UNIONS survey, a problem with Europium and whether Little Red Dots are really AGN. Listen below, on Spotify, Apple podcasts or wherever you get your podcasts!Read this episodes papers through the links below!Collisionless relaxation to quasi-steady state attractors in cold dark matter halos: origin of

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39:58

Episode 12 - Signs of life, little red dots and the...

StarXiv: a podcast discussing the latest astronomy... ·

2025/05/25

This episode, Michelle and Payel are very on-theme as they discuss whether Little Red Dots can be explained by super Eddington accretion; the high abundances of nitrogen to oxygen in the most distant galaxies and whether this is tied to globular cluster formation; the stellar graveyard in galaxies, and claims of signs of life in distant world. Listen below, on Spotify, Apple podcasts or wherever you get your podcasts!Check out this episode's papers on the arXiv below!Super-Eddington accretion in

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39:46

Episode 11: Whirling planes, wandering black holes...

StarXiv: a podcast discussing the latest astronomy... ·

2025/05/12

In this episode, Michelle and Payel discuss whether wandering intermediate black holes are mythical or not, how planes of satellites may form from cosmic accretion, how to form double hot Jupiters, whether Kelper's supernova remnant is an 'alien', whether Unions I is the faintest star cluster or the faintest galaxy, and just how old our globular clusters are. Listen below or check us out on Spotify, Apple Podcasts, or wherever you get your podcasts.You can check out all the papers we discuss this

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13 results

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