StarXiv: a podcast discussing the latest astronomy papers

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.

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 get your podcasts.

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.

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 alCLASSY XIV: Nitrogen Enrichment Shaped by Gas Density and Feedback - Karla C. Arellano-Cordova et al.Where are all the dark galaxies? Predicting galaxy/halo locations from their bright neighbors - Alice Chen & Niayesh AfshordiAn Earth-Sized Planet in a 5.4h Orbit Around a Nearby K dwarf - Kaya Han Tas et al.From a Different Star: 3I/ATLAS in the context of the Åtautahi-Oxford interstellar object population model - Matthew J. Hopkins et al.Interstellar comet 3I/ATLAS: discovery and physical description - Bryce T. Bolin et al.Initial VLT/MUSE spectroscopy of the interstellar object 3I/ATLAS - Cyielle Opitom et al.Discovery and Preliminary Characterization of

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. 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 – Ekaterina Ilin et al.Accreted Globular Clusters and Horizontal Branch Morphology in the Outer Halo of M31 – Gracie McGill et al.A binary origin of ultra-long period radio pulsars – Ying-Han Mao et al.Avoiding (photo-z) Catastrophe – A. J. Battisti et al.Causal Discovery of Latent Variables in Galactic Archaeology – Zehao Jin et al.

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 galaxies, and the impact of the initial mass function on chemical evolution at high redshift.Read this episode's papers through the links below!MIGHTEE-HI: The direct detection of neutral hydrogen in galaxies at z>0.25 - Matt J. Jarvis et al.Stellar Velocity Dispersion versus Age: Consistency across Observations and Simulations, with the Milky Way as an Outlier - Fiona McCluskey et al.JWST Coronagraphic Images of 14 Her c: a Cold Giant Planet in a Dynamically Hot, Multi-planet System - Daniella C. Bardalez Gagliuffi et al.Hydrostatic and explosive α-element chemical abundances of Milky Way globular clusters, halo substructures, and satellite galaxies - Danny Horta and Melissa NessThe Cosmic Owl: Twin Active Collisional Ring Galaxies with Starburst Merging Front at z=1.14 - Mingyu Li et al.Impact of initial mass function on the chemical evolution of high-redshift galaxies - Boyuan Liu et al.

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 the universal NFW profile - Uddipan Banik, Amitava BhattacharjeePluto Geologic Map: Use of Crater Data to Understand Age Relationships - Kelsi N. Singer et al.Bursty or heavy? The surprise of bright Population III systems in the Reionization era - Alessandra Venditti et al.Galaxies OBserved as Low-luminosity Identified Nebulae (GOBLIN): a catalog of 43,000 high-probability dwarf galaxy candidates in the UNIONS survey - Nick Heesters et al.Europium, we have a problem. Modelling r-process enrichment across Local Group galaxies - Marco Palla et al.Lonely Little Red Dots: Challenges to the AGN-nature of little red dots through their clustering and spectral energy distributions - María de las Mercedes Carranza Escudero

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 high-redshift quasar hosts: black-hole driven outflows, galaxy quenching, and the nature of Little Red Dots - Giada Quadri et al.Connecting JWST discovered N/O-enhanced galaxies to globular clusters: Evidence from chemical imprints - Xihan Ji et alInsufficient evidence for DMS and DMDS in the atmosphere of K2-18 b. From a joint analysis of JWST NIRISS, NIRSpec, and MIRI observations - R. Luque et al.Chandra Rules Out Super-Eddington Accretion For Little Red Dots - Andrea Sacchi and Akos BogdanA Cosmic Miracle: A Remarkably Luminous Galaxy at zspec=14.44 Confirmed with JWST - Rohan Naidu et alStellar population modelling of neutron stars and black holes: spatially-resolved graveyards in MaNGA/SDSS-IV galaxies - Claudia Maraston et al.

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 episode using the links below!Wandering intermediate-mass black holes in Milky Way-mass galaxies in cosmological simulations: myth or reality? - Floor van DonkelaarZippers and Twisters: Planes of Satellite Galaxies Emerge from Whirling and Shocking Gas Streams in the Cosmic Web - Janvi P. Madhani et al.Double Hot Jupiters Through ZLK Migration - Yurou Liu, Tiger Lu and Malena RiceAlien-Type-Ia supernovae from the Milky Way merger history and one possible candidate -- Kepler's supernova - Wenlang He et al.Reevaluating UMa3/U1: star cluster or the smallest known galaxy? - Scot Devlin et al.The Absolute Age of Milky Way Globular Clusters - Jiaqi Ying et al.

This episode, Michelle and Payel delve into the latest constraints on mixed dark matter from the Lyman alpha forest, what happens to stars that get a little too close to a black hole, how machine learning can help identify stars likely to host an Earth-like planet, studying the dark ages from the Moon and witnessing the birth of nuclear star clusters! Check out the episode and papers below!Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data - Olga Garcia-Gallego et al.Black Hole Survival Guide: Searching for Stars in the Galactic Center That Endure Partial Tidal Disruption - Rewa Clark Bush et al. Earth-like planet predictor: A machine learning approach - Jeanne Davoult et al.Detecting the 21 cm Signal of the Cosmic Dark Ages - Willow Smith and Jonathan PoberEvidence of star cluster migration and merger in dwarf galaxies - Mélina Poulain et al.

In this episode, Payel and Michelle discuss how you can slow down a galaxy’s bar, scaling relations for black holes, whether we can use intracluster light to learn about dark matter, little red dots, AI cosmologists and pasta sauce for all your plotting needs! Check out our episode – and the papers that inspired it – below.Tidal interaction can stop galactic bars: on the LMC non-rotating bar– Óscar Jiménez-Arranz & Santi Roca-FabregaEvidence for evolutionary pathway-dependent black hole scaling relations – Jonathan Cohn et al.pastamarkers 2: pasta sauce colormaps for your flavorful results – The PASTA collaborationIntracluster light is a biased tracer of the dark matter distribution in clusters – J. Butler et al.Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos – Fangzhou Jiang et alThe AI Cosmologist I: An Agentic System for Automated Data Analysis – Adam Moss

In this episode, Payel and Michelle discuss the longest period pulsar, the formation of nuclear star clusters, the recent data releases from ACT and DESI, dark spiral arms and the problem with rotation curves.Papers in this episode:The discovery of a 41-second radio pulsar PSR J0311+1402 with ASKAP – Yuanming Wang et al.Seeding Cores: A Pathway for Nuclear Star Clusters from Bound Star Clusters in the First Billion Years – Fred Angelo Batan GarciaDark matter spiral arms in Milky Way-like halos – Marcel Benet et al.Data Release 1 of the Dark Energy Spectroscopic Instrument – The DESI collaborationThe Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models – Ermina Calabrese et alDecoding the Galactic Twirl: The Downfall of Milky Way-mass Galaxies Rotation Curves in the FIRE Simulations – Xiaowei Ou et al.

In this episode of The Starxiv, Michelle and Payel discuss a revised distance for the controversial ultra-diffuse galaxy, DF2; a discovery of a supermassive black hole in an ultra compact dwarf; 2 galaxies hiding in plain sight; and how statistical mechanics may help with dark matter's cusp-core problem. Michelle and Payel also have to put up with slightly inferior audio quality as the undergraduates reclaimed their recording equipment!This episode's papers:A new way to measure the distance to NGC1052-DF2 – Michael Beasley et al.Revisiting the globular clusters of NGC1052-DF2 – Katja Fahrion et al.Chemical signature reveals co-spatial dwarf satellite of an edge-on disc galaxy with MUSE – Devang Somawanshi et al.When Is a Bulge Not a Bulge? Revealing the Satellite Nature of NGC 5474’s Bulge – Ray Garner III et al.A Supermassive Black Hole in a Diminutive Ultra-compact Dwarf Galaxy Discovered with JWST/NIRSpec+IFU – Matthew Taylor et al.Addressing the core-cusp and diversity problem of dwarf and disk galaxies using cold collisionless DARKexp theory – Liliya Williams et al.

In this episode, Payel and Michelle delve into the arXiv and discuss standard sirens, gravitational lenses, a very metal poor stellar stream and a cosmic bullseye!Candidate intermediate-mass black hole discovered in an extremely young low-metallicity cluster in the tadpole galaxy KUG 1138+327 – Wang & OttSpinning spectral sirens: Robust cosmological measurement using mass-spin correlations in the binary black hole population – Hui et alEuclid: A complete Einstein ring in NGC 6505 – C. M. O’Riordan et al.The Pristine survey: XXVIII. The extremely metal-poor stream C-19 stretches over more than 100 degrees – Zhen Yuan et alUnveiling a 36 Billion Solar Mass Black Hole at the Centre of the Cosmic Horseshoe Gravitational Lens – Melo-Carneiro et al.The Bullseye: HST, Keck/KCWI, and Dragonfly Characterization of a Giant Nine-Ringed Galaxy – Imad Pasha et al.

Arriving in your ears on February 10th, our latest installment includes transfer learning to detect low surface brightness galaxies, hot and cold gas accretion, an unusual finding in a filament, details of our proto-Galaxy, and the search for intelligent life! Papers discussed this month:DES to HSC: Detecting low surface brightness galaxies in the Abell 194 cluster using transfer learning – Thuruthipilly et al.Gas accretion at high redshift: cold flows all the way – Waterval et al.Pearls on a string: Dark and bright galaxies on a strikingly straight and narrow filament – Arabsalmani et al.Discovery of A Starburst in the Early Milky Way at [Fe/H] <−2 – Chen et al.The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence – Thomas et al.

In this month’s edition, Michelle and Payel dive into the New Year with papers on machine learning, star formation in low mass galaxies and working out just how early in the Universe planets can form.Papers discussed this month:Habitable Worlds Formed at Cosmic Dawn Whalen et al.The puzzle of isolated and quenched dwarf galaxies in cosmic voids Bidaran et al.On the detection of stellar wakes in the Milky Way: a deep learning approach – Pöder et al

In this episode, Payel and Michelle discuss six papers covering topics like ultra-diffuse galaxies, the Omega Centauri cluster, and insights from JWST. The extended podcast aims to explore diverse research while transitioning to biweekly episodes in the New Year, maintaining a 30-minute format. They’ll return in 2025.Papers discussed this month:The multiple classes of ultra-diffuse galaxies: Can we tell them apart? – Maria-Luisa Buzzo et al.Abundance ties: Nephele and the globular cluster population accreted with ω Cen. Based on APOGEE DR17 and Gaia EDR3 – Giulia Pagnini et al.A New Rarity Assessment of the `Disk of Satellites’: the Milky Way System Is the Exception Rather than the Rule in the ΛCDM Cosmology – Chanoul Seo et al.New tools for studying planarity in galaxy satellite systems: Milky Way satellite planes are consistent with ΛCDM – E. Uzeirbegovic et al.A grand-design spiral galaxy 1.5 billion years after the Big Bang with JWST – Rashi Jain & Yogesh WadadekarIn-situ formation of star clusters at z > 7 via galactic disk fragmentation; shedding light on ultra-compact clusters and overmassive black holes seen by JWST – Lucio Meyer et al.

This month, Payel and Michelle sit down to discuss a range of exciting new results, including a disappearing star, news moons of Uranus, star formation in extremely metal poor galaxies and unusual young stars in the Milky Way disk. Plus, we make a plug for the extremely useful local_volume_database project.Papers discussed this month:The disappearance of a massive star marking the birth of a black hole in M31 – Kishalay De et al.New Moons of Uranus and Neptune from Ultra-Deep Pencil Beam Surveys – Scott Sheppard et al.Molecular Hydrogen in the Extremely Metal-Poor, Star-Forming Galaxy Leo P – O. Grace TelfordEvidence of Truly Young high-α Dwarf Stars – Yuxi Lu et al.The Local Volume Database: a library of the observed properties of nearby dwarf galaxies and star clusters – Andrew Pace

In our first podcast, we sit down to discuss a few papers from September, including a trio of new galaxies, the initial mass function, the building blocks of the Milky Way and are we alone in the Universe?Papers in this month’s episode:Three Quenched, Faint Dwarf Galaxies in the Direction of NGC 300: New Probes of Reionization and Internal Feedback, Sand et al Did WISE detect Dyson Spheres/Structures around Gaia-2MASS-selected stars? BlainLoki: an ancient system hidden in the Galactic plane? Sesito et al.Revealing Potential Initial Mass Function variations with metallicity: JWST observations of young open clusters in a low-metallicity environment, Yasui et al.