StarXiv: a podcast discussing the latest astronomy papers – Détails, épisodes et analyse

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 Pober

Evidence 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-Fabrega

Evidence for evolutionary pathway-dependent black hole scaling relations – Jonathan Cohn et al.

pastamarkers 2: pasta sauce colormaps for your flavorful results – The PASTA collaboration

Intracluster 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 al

The 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 Garcia

Dark matter spiral arms in Milky Way-like halos – Marcel Benet et al.

Data Release 1 of the Dark Energy Spectroscopic Instrument – The DESI collaboration

The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models – Ermina Calabrese et al

Decoding 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 & Ott

Spinning spectral sirens: Robust cosmological measurement using mass-spin correlations in the binary black hole population – Hui et al

Euclid: 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 al

Unveiling 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:

1. The multiple classes of ultra-diffuse galaxies: Can we tell them apart? – Maria-Luisa Buzzo et al.
2. Abundance ties: Nephele and the globular cluster population accreted with ω Cen. Based on APOGEE DR17 and Gaia EDR3 – Giulia Pagnini et al.
3. 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.
4. New tools for studying planarity in galaxy satellite systems: Milky Way satellite planes are consistent with ΛCDM – E. Uzeirbegovic et al.
5. A grand-design spiral galaxy 1.5 billion years after the Big Bang with JWST – Rashi Jain & Yogesh Wadadekar
6. In-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:

1. The disappearance of a massive star marking the birth of a black hole in M31 – Kishalay De et al.
2. New Moons of Uranus and Neptune from Ultra-Deep Pencil Beam Surveys – Scott Sheppard et al.
3. Molecular Hydrogen in the Extremely Metal-Poor, Star-Forming Galaxy Leo P – O. Grace Telford
4. Evidence of Truly Young high-α Dwarf Stars – Yuxi Lu et al.
5. 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:

1. Three Quenched, Faint Dwarf Galaxies in the Direction of NGC 300: New Probes of Reionization and Internal Feedback, Sand et al 
2. Did WISE detect Dyson Spheres/Structures around Gaia-2MASS-selected stars? Blain
3. Loki: an ancient system hidden in the Galactic plane? Sesito et al.
4. Revealing Potential Initial Mass Function variations with metallicity: JWST observations of young open clusters in a low-metallicity environment, Yasui et al.