Terrestrial- and Neptune-mass Free-Floating Planet Candidates from the MOA-II 9 yr Galactic Bulge Survey by Naoki Koshimoto, Takahiro Sumi, David P. Bennett, Valerio Bozza, Przemek Mróz, Andrzej Udalski, Nicholas J. Rattenbury, Fumio Abe, Richard Barry, Aparna Bhattacharya, Ian A. Bond, Hirosane Fujii, Akihiko Fukui, Ryusei Hamada, Yuki Hirao, Stela Ishitani Silva, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Yutaka Matsubara, Shota Miyazaki, Yasushi Muraki, Greg Olmschenk, Clément Ranc, Yuki Satoh, Daisuke Suzuki, Mio Tomoyoshi, Paul J. Tristram, Aikaterini Vandorou, Hibiki Yama, Kansuke Yamashita, MOA Collaboration

“…This allows us to use a Galactic model to simulate the t _E and θ _E distribution of events produced by the known stellar populations and models of the FFP distribution that are fit to the data. …”
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GOALS-JWST: NIRCam and MIRI Imaging of the Circumnuclear Starburst Ring in NGC 7469 by Thomas Bohn, Hanae Inami, Tanio Diaz-Santos, Lee Armus, S. T. Linden, Vivian U, Jason Surace, Kirsten L. Larson, Aaron S. Evans, Shunshi Hoshioka, Thomas Lai, Yiqing Song, Joseph M. Mazzarella, Loreto Barcos-Munoz, Vassilis Charmandaris, Justin H. Howell, Anne M. Medling, George C. Privon, Jeffrey A. Rich, Sabrina Stierwalt, Susanne Aalto, Torsten Böker, Michael J. I. Brown, Kazushi Iwasawa, Matthew A. Malkan, Paul P. van der Werf, Philip Appleton, Christopher C. Hayward, Francisca Kemper, David Law, Jason Marshall, Eric J. Murphy, David Sanders

“…Their NIR colors are also consistent with young (<5 Myr) stellar populations and more than half of them are coincident with the mid-infrared (MIR) emission peaks. …”
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THE CHEMICAL EVOLUTION OF THE BOÖTES I ULTRA-FAINT DWARF GALAXY by Norris, John E., Gilmore, Gerard, Wyse, Rosemary F. G., Frebel, Anna L.

“…This resulted in the two stellar populations observable today.…”
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Unusual Isotopic Abundances in a Fully Convective Stellar Binary by Lothringer, J. D., Flores, B., Mills, E. A. C., Freedman, R., Valverde, J., Miles, B., Skemer, A., Crossfield, Ian Jm, Guo, Xueying

“…These isotopic measurements complement the elemental abundances provided by large-scale spectroscopic surveys, and open a new window onto studies of Galactic evolution, stellar populations, and individual systems. Key words: infrared: stars – techniques: spectroscopic – stars: abundances – supernovae: general…”
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Quenched, bulge-dominated, but dynamically cold galaxies in IllustrisTNG and their real-world counterparts by Lu, Shengdong, Xu, Dandan, Wang, Sen, Wang, Yunchong, Mao, Shude, Xia, Xiaoyang, Vogelsberger, Mark, Hernquist, Lars

“…Galaxy morphologies, kinematics, and stellar populations are thought to be linked to each other. …”
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ChAInGeS: THE CHANDRA ARP INTERACTING GALAXIES SURVEY by Smith, Beverly J., Swartz, Douglas A., Miller, Olivia, Burleson, Jacob A., Nowak, Michael A., Struck, Curtis

“…However, the u – g and r – i colors at the ULX locations tend to be bluer on average than these global colors, suggesting that ULXs are preferentially found in regions with young stellar populations. In the Arp sample there is a possible enhancement of a factor of ~2-5 in the fraction of galactic nuclei that are X-ray-bright compared to more normal spirals.…”
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First JWST Observations of JAGB Stars in the SN Ia Host Galaxies: NGC 7250, NGC 4536, NGC 3972 by Abigail J. Lee, Wendy L. Freedman, In Sung Jang, Barry F. Madore, Kayla A. Owens

“…After successfully employing this method in our JWST galaxy sample, we find the JAGB stars are well segregated from other stellar populations in color–magnitude space, and have observed dispersions about their individual F115W modes of σ _N7250 = 0.32 mag, σ _N4536 = 0.34 mag, and σ _N3972 = 0.35 mag. …”
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Probing the Star Formation Main Sequence Down to 108 M ⊙ at 1.0 < z < 3.0 by Rosa M. Mérida, Pablo G. Pérez-González, Patricia Sánchez-Blázquez, Ángela García-Argumánez, Marianna Annunziatella, Luca Costantin, Alejandro Lumbreras-Calle, Belén Alcalde-Pampliega, Guillermo Barro, Néstor Espino-Briones, Anton M. Koekemoer

“…These observational characteristics are identified with young (mass-weighted age 〈 t _M _− _w 〉 ∼ 0.014 Gyr) stellar populations subject to low attenuations (〈 A ( V )〉 ∼ 0.30 mag). …”
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Exposing Line Emission: The Systematic Differences of Measuring Galaxy Stellar Masses with JWST NIRCam Medium versus Wide Band Photometry by Ghassan T. E. Sarrouh, Adam Muzzin, Kartheik G. Iyer, Lamiya Mowla, Sunna Withers, Nicholas S. Martis, Roberto Abraham, Yoshihisa Asada, Maruša Bradač, Gabriel B. Brammer, Guillaume Desprez, Vince Estrada-Carpenter, Jasleen Matharu, Gaël Noirot, Marcin Sawicki, Victoria Strait, Chris J. Willott, Johannes Zabl

“…There are, however, a subset of galaxies (5% at z ∼ 2 up to 15% at z ∼ 6) where wide bands underestimate emission line strengths and infer older stellar populations, leading to median stellar mass differences of ∼0.7 dex. …”
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Optical- and UV-continuum Morphologies of Compact Radio Source Hosts by C. Duggal, C. P. O’Dea, S. A. Baum, A. Labiano, C. Tadhunter, D. M. Worrall, R. Morganti, G. R. Tremblay, D. Dicken

“…Young (≲ 10 Myr), massive (≳ 5 M _⊙ ) stellar populations are likely to be the dominant source of the blue excess emission in radio galaxies at these redshifts. …”
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Scylla. I. A Pure-parallel, Multiwavelength Imaging Survey of the ULLYSES Fields in the LMC and SMC by Claire E. Murray, Christina W. Lindberg, Petia Yanchulova Merica-Jones, Benjamin F. Williams, Roger E. Cohen, Karl D. Gordon, Kristen B. W. McQuinn, Yumi Choi, Clare Burhenne, Karin M. Sandstrom, Caroline Bot, L. Clifton Johnson, Steven R. Goldman, Christopher J. R. Clark, Julia C. Roman-Duval, Karoline M. Gilbert, J. E. G. Peek, Alec S. Hirschauer, Martha L. Boyer, Andrew E. Dolphin

“…Scylla is a deep Hubble Space Telescope (HST) survey of the stellar populations, interstellar medium, and star formation in the LMC and SMC. …”
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PHANGS-ML: Dissecting Multiphase Gas and Dust in Nearby Galaxies Using Machine Learning by Dalya Baron, Karin M. Sandstrom, Erik Rosolowsky, Oleg V. Egorov, Ralf S. Klessen, Adam K. Leroy, Médéric Boquien, Eva Schinnerer, Francesco Belfiore, Brent Groves, Jérémy Chastenet, Daniel A. Dale, Guillermo A. Blanc, José E. Méndez-Delgado, Eric W. Koch, Kathryn Grasha, Mélanie Chevance, David A. Thilker, Dario Colombo, Thomas G. Williams, Debosmita Pathak, Jessica Sutter, Toby Brown, John F. Wu, Josh E. G. Peek, Eric Emsellem, Kirsten L. Larson, Justus Neumann

“…We focus on three of the PHANGS-JWST galaxies, for which we extract properties pertaining to their stellar populations; warm ionized and cold molecular gas; and polycyclic aromatic hydrocarbons (PAHs), as measured over 150 pc scale regions. …”
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An Empirical Framework Characterizing the Metallicity and Star-formation History Dependence of X-Ray Binary Population Formation and Emission in Galaxies by Bret D. Lehmer, Erik B. Monson, Rafael T. Eufrasio, Amirnezam Amiri, Keith Doore, Antara Basu-Zych, Kristen Garofali, Lidia Oskinova, Jeff J. Andrews, Vallia Antoniou, Robel Geda, Jenny E. Greene, Konstantinos Kovlakas, Margaret Lazzarini, Chris T. Richardson

“…Integration of our models provides predictions for X-ray scaling relations that agree very well with past results presented in the literature, including, e.g., the L _X –SFR– Z relation for high-mass XRBs in young stellar populations as well as the L _X / M _⋆ ratio observed in early-type galaxies that harbor old populations of low-mass XRBs. …”
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Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Our Galaxy [version 2; peer review: 2 approved] by Pamela Klaassen, Maria Beltrán, Alessio Traficante, Mark Booth, Kate Pattle, Jonathan Marshall, Joshua Lovell, Brandt Gaches, Alvaro Hacar, Nicolas Peretto, Caroline Bot, Doris Arzoumanian, Thomas Stanke, Gaspard Duchêne, Ana Duarte Cabral, Antonio Hales, David Eden, Patricia Luppe, Jens Kauffmann, Elena Redaelli, Sebastian Marino, Álvaro Sánchez-Monge, Andrew Rigby, Dmitry Semenov, Eugenio Schisano, Mark Thompson, Silvia Spezzano, Claudia Cicone, Friedrich Wyrowski, Martin Cordiner, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Amélie Saintonge, Sven Wedemeyer, Alexander Thelen

“…The complex interactions of those gas, dust and stellar populations form what has come to be known as the ecology of our Galaxy. …”
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Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Our Galaxy [version 1; peer review: 2 approved] by Pamela Klaassen, Maria Beltrán, Alessio Traficante, Mark Booth, Kate Pattle, Jonathan Marshall, Joshua Lovell, Brandt Gaches, Alvaro Hacar, Nicolas Peretto, Caroline Bot, Doris Arzoumanian, Thomas Stanke, Gaspard Duchêne, Ana Duarte Cabral, Antonio Hales, David Eden, Patricia Luppe, Jens Kauffmann, Elena Redaelli, Sebastian Marino, Álvaro Sánchez-Monge, Andrew Rigby, Dmitry Semenov, Eugenio Schisano, Mark Thompson, Silvia Spezzano, Claudia Cicone, Friedrich Wyrowski, Martin Cordiner, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Amélie Saintonge, Sven Wedemeyer, Alexander Thelen

“…The complex interactions of those gas, dust and stellar populations form what has come to be known as the ecology of our Galaxy. …”
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Observations of Extremely Metal-poor O Stars: Weak Winds and Constraints for Evolution Models by O. Grace Telford, John Chisholm, Andreas A. C. Sander, Varsha Ramachandran, Kristen B. W. McQuinn, Danielle A. Berg

“…These results provide empirical benchmarks for future development of mass-loss and evolution models for metal-poor stellar populations.…”
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Small Region, Big Impact: Highly Anisotropic Lyman-continuum Escape from a Compact Starburst Region with Extreme Physical Properties by Keunho J. Kim, Matthew B. Bayliss, Jane R. Rigby, Michael D. Gladders, John Chisholm, Keren Sharon, Håkon Dahle, T. Emil Rivera-Thorsen, Michael K. Florian, Gourav Khullar, Guillaume Mahler, Ramesh Mainali, Kate A. Napier, Alexander Navarre, M. Riley Owens, Joshua Roberson

“…Extreme, young stellar populations are considered to be the primary contributor to cosmic reionization. …”
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Radial Profiles of Σ*, ΣSFR, Gas Metallicity, and Their Correlations across the Galactic Mass–Size Plane by Lin Lin, Shiyin Shen, Hassen M. Yesuf, Ye-Wei Mao, Lei Hao

“…The combination of higher sSFR and potentially higher star formation efficiency in compact galaxies suggests that their central gas is being rapidly consumed, leading to older stellar populations, as indicated by D _n (4000) and EW(H δ _A ), and resulting in faster central growth. …”
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A JWST Survey of the Supernova Remnant Cassiopeia A by Dan Milisavljevic, Tea Temim, Ilse De Looze, Danielle Dickinson, J. Martin Laming, Robert Fesen, John C. Raymond, Richard G. Arendt, Jacco Vink, Bettina Posselt, George G. Pavlov, Ori D. Fox, Ethan Pinarski, Bhagya Subrayan, Judy Schmidt, William P. Blair, Armin Rest, Daniel Patnaude, Bon-Chul Koo, Jeonghee Rho, Salvatore Orlando, Hans-Thomas Janka, Moira Andrews, Michael J. Barlow, Adam Burrows, Roger Chevalier, Geoffrey Clayton, Claes Fransson, Christopher Fryer, Haley L. Gomez, Florian Kirchschlager, Jae-Joon Lee, Mikako Matsuura, Maria Niculescu-Duvaz, Justin D. R. Pierel, Paul P. Plucinsky, Felix D. Priestley, Aravind P. Ravi, Nina S. Sartorio, Franziska Schmidt, Melissa Shahbandeh, Patrick Slane, Nathan Smith, Niharika Sravan, Kathryn Weil, Roger Wesson, J. Craig Wheeler

“…These JWST survey data and initial findings help address unresolved questions about massive star explosions that have broad implications for the formation and evolution of stellar populations, the metal and dust enrichment of galaxies, and the origin of compact remnant objects.…”
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The Comprehensive Archive of Substellar and Planetary Accretion Rates by S. K. Betti, K. B. Follette, K. Ward-Duong, A. E. Peck, Y. Aoyama, J. Bary, B. Dacus, S. Edwards, G.-D. Marleau, K. Mohamed, J. Palmo, C. Plunkett, C. Robinson, H. Wang

“…However, we argue that the brown-dwarf and stellar populations are better described separately and by accounting for both mass and age. …”
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