Dr Thomas Williams: Publications

Toward Unbiased Abundance Measurements in Inhomogeneous $\mathrm{H\,II}$ Regions

ArXiv 2607.05295 (2026)

Authors:

Eric Habjan, Christopher Faesi, Kathryn Kreckel, J Eduardo Méndez-Delgado, Francesco Belfiore, Ryan J Vaught, Brent Groves, Fabian Scheuermann, Thomas G Williams, Ralf S Klessen, Amirnezam Amiri, Kathryn Grasha, Simon Glover

Exploring the synergies of $[\mathrm{O\,II}]λ3727$ with MUSE spectroscopy in PHANGS H II regions

ArXiv 2607.00408 (2026)

Authors:

Eric Habjan, Kathryn Kreckel, Christopher Faesi, Francesco Belfiore, Brent Groves, J Eduardo Méndez-Delgado, Ryan J Vaught, Laurie Rousseau-Nepton, Fabian Scheuermann, F Fabián Rosales-Ortega, Hsi-An Pan, Daniel A Dale, Thomas G Williams, Ralf S Klessen, Oleg V Egorov, Timo Kravtsov, Amirnezam Amiri, Kathryn Grasha, Eric Emsellem

Revisiting Ram Pressure Stripping in Wolf–Lundmark–Melotte: No Evidence for Stripped HIwith Local Group L-Band Survey

Astronomical Journal 172:1 (2026)

Authors:

DR Rybarczyk, EW Koch, FC Vargas, S Stanimirović, NM Pingel, JJ Dalcanton, AK Leroy, EW Rosolowsky, MP Busch, CG Kim, A Smercina, E Tarantino, V Villanueva, AD Bolatto, TG Williams

Abstract:

We analyze H i 21 cm observations of the Local Group dwarf galaxy Wolf–Lundmark–Melotte (WLM) from the Local Group L-Band Survey to search for evidence of ram pressure stripping. While previous MeerKAT-16 observations of WLM showed evidence for off-galaxy atomic gas emission with a geometry suggestive of ram pressure stripping, our observations find no evidence for this stripped gas. We demonstrate that our observations would be sensitive to the claimed detections and suggest that an uncorrected observational flaw with the MeerKAT data led to the apparent off-galaxy emission. The lack of off-galaxy emission obviates the need for uncharacteristically high values of the density of the intergalactic medium in this region.

Erratum: “Cloud-scale Gas Properties, Depletion Times, and Star Formation Efficiency per Freefall Time in PHANGS–ALMA” (2025, ApJ, 985, 14)

The Astrophysical Journal American Astronomical Society 1003:2 (2026) 248

Authors:

Adam K Leroy, Jiayi Sun, Sharon Meidt, Oscar Agertz, I-Da Chiang, Jindra Gensior, Simon CO Glover, Oleg Y Gnedin, Annie Hughes, Eva Schinnerer, Ashley T Barnes, Frank Bigiel, Alberto D Bolatto, Dario Colombo, Jakob den Brok, Mélanie Chevance, Ryan Chown, Cosima Eibensteiner, Damian R Gleis, Kathryn Grasha, Jonathan D Henshaw, Ralf S Klessen, Eric W Koch, Elias K Oakes, Hsi-An Pan, Miguel Querejeta, Erik Rosolowsky, Toshiki Saito, Karin Sandstrom, Sumit K Sarbadhicary, Yu-Hsuan Teng, Antonio Usero, Dyas Utomo, Thomas G Williams

From gas to stars along the spiral wave: CO, HCN, and star formation variations across the spiral arms in NGC 4321 and M51

ArXiv 2605.05302 (2026)

Authors:

Minou Greve, Lukas Neumann, Mallory Thorp, Dario Colombo, Frank Bigiel, Miguel Querejeta, Sharon E Meidt, Ashley T Barnes, Zein Bazzi, Ralf S Klessen, Adam K Leroy, Hsi-An Pan, Jérôme Pety, Marina Ruiz-García, Eva Schinnerer, Rowan Smith, Sophia Stuber, Jiayi Sun, Antonio Usero, Thomas G Williams

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