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.
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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.
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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.
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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 TestiNew gravitational-wave data support a bimodal black-hole mass
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Episode 19 - Peering into the Local Universe, distant black holes, forming planets and alien signatures
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 compact clusters in the local Milky Way? Alexis L. Quintana, Emily L. Hunt & Hanna ParulChemical evolution imprints in the rare isotopes of nearby M dwarfs - Dario Gonzalez-Picos et al.WIde Separation Planets In Time (WISPIT): A Gap-clearing Planet in a Multi-ringed Disk around the Young Solar-type Star WISPIT 2 - Richelle van Capelleveen et al.Glimmers in the Cosmic Dawn. III. On the Photometrically Determined Black Hole Mass to Stellar Mass Relation Across Cosmic Time - Alice Young et al.Technosignature Searches of Interstellar Objects - James Davenport et al.
Om StarXiv: a podcast discussing the latest astronomy papers
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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