Zobrazeno 1 - 10
of 306
pro vyhledávání: '"J, Rickards"'
Autor:
Telford, O. Grace, Sandstrom, Karin M., McQuinn, Kristen B. W., Glover, Simon C. O., Tarantino, Elizabeth J., Bolatto, Alberto D., Vaught, Ryan J. Rickards
The James Webb Space Telescope (JWST) has revealed unexpectedly rapid galaxy assembly in the early universe, in tension with models of star and galaxy formation. In the gas conditions typical of early galaxies, particularly their low abundances of he
Externí odkaz:
http://arxiv.org/abs/2410.21368
Autor:
Brazzini, Matilde, Belfiore, Francesco, Ginolfi, Michele, Groves, Brent, Kreckel, Kathryn, Vaught, Ryan J. Rickards, Baron, Dalya, Bigiel, Frank, Blanc, Guillermo A., Dale, Daniel A., Grasha, Kathryn, Habjan, Eric, Klessen, Ralf S., Méndez-Delgado, J. Eduardo, Sandstrom, Karin, Williams, Thomas G.
We present a chemical analysis of selected HII regions from the PHANGS-MUSE nebular catalogue. Our intent is to empirically re-calibrate strong-line diagnostics of gas-phase metallicity, applicable across a wide range of metallicities within nearby s
Externí odkaz:
http://arxiv.org/abs/2410.00106
Autor:
Chen, Yuguang, Jones, Tucker, Sanders, Ryan L., Fadda, Dario, Sutter, Jessica, Minchin, Robert, Prusinski, Nikolaus Z., Rhoades, Sunny, GC, Keerthi Vasan, Steidel, Charles C., Huntzinger, Erin, Kelly, Paige, Berg, Danielle A., Bresolin, Fabio, Herrera-Camus, Rodrigo, Vaught, Ryan J. Rickards, Roberts-Borsani, Guido, Senchyna, Peter, Spilker, Justin S., Stark, Daniel P., Weiner, Benjamin, Martin, D. Christopher, Matuszewski, Mateusz, McGurk, Rosalie C., Neill, James D.
Accurate chemical compositions of star-forming regions are a critical diagnostic tool to characterize the star formation history and gas flows which regulate galaxy formation. However, the abundance discrepancy factor (ADF) between measurements from
Externí odkaz:
http://arxiv.org/abs/2405.18476
Autor:
Hamel-Bravo, Magdalena J., Fisher, Deanne B., Berg, Danielle, Björgvinsson, Bjarki, Bolatto, Alberto D., Cameron, Alex J., Chisholm, John, Fielding, Drummond B., Herrera-Camus, Rodrigo, Kacprzak, Glenn G., Li, Miao, Ciraulo, Barbara Mazzilli, McLeod, Anna F., McPherson, Daniel K., Nielsen, Nikole M., Chu, Bronwyn Reichardt, Vaught, Ryan J. Rickards, Sandstrom, Karin
We present the results of direct-method metallicity measurements in the disk and outflow of the low-metallicity starburst galaxy NGC 1569. We use Keck Cosmic Web Imager observations to map the galaxy across 54$\arcsec$ (800 pc) along the major axis a
Externí odkaz:
http://arxiv.org/abs/2404.04600
Autor:
Nielsen, Nikole M., Fisher, Deanne B., Kacprzak, Glenn G., Chisholm, John, Martin, D. Christopher, Chu, Bronwyn Reichardt, Sandstrom, Karin M., Vaught, Ryan J. Rickards
Most of a galaxy's mass is located out to hundreds of kiloparsecs beyond its stellar component. This diffuse reservoir of gas, the circumgalactic medium (CGM), acts as the interface between a galaxy and the cosmic web that connects galaxies. We prese
Externí odkaz:
http://arxiv.org/abs/2311.00856
Autor:
Vaught, Ryan J. Rickards, Sandstrom, Karin M., Belfiore, Francesco, Kreckel, Kathryn, Méndez-Delgado, J. Eduardo, Emsellem, Eric, Groves, Brent, Blanc, Guillermo A., Dale, Daniel A., Egorov, Oleg V., Glover, Simon C. O., Grasha, Kathryn, Klessen, Ralf S., Neumann, Justus, Williams, Thomas G.
HII region electron temperatures are a critical ingredient in metallicity determinations and recent observations reveal systematic variations in the temperatures measured using different ions. We present electron temperatures ($T_e$) measured using t
Externí odkaz:
http://arxiv.org/abs/2309.17440
Autor:
McPherson, Daniel K., Fisher, Deanne B., Nielsen, Nikole M., Kacprzak, Glenn G., Chu, Bronwyn Reichardt, Cameron, Alex J., Bolatto, Alberto D., Chisholm, John, Fielding, Drummond B., Berg, Danielle, Herrera-Camus, Rodrigo, Li, Miao, Vaught, Ryan J. Rickards, Sandstrom, Karin
We present a method to characterize star-formation driven outflows from edge-on galaxies and apply this method to the metal-poor starburst galaxy, Mrk 1486. Our method uses the distribution of emission line flux (from H$\beta$ and [OIII] 5007) to ide
Externí odkaz:
http://arxiv.org/abs/2308.06918
Autor:
Chastenet, Jérémy, Sutter, Jessica, Sandstrom, Karin, Belfiore, Francesco, Egorov, Oleg V., Larson, Kirsten L., Leroy, Adam K., Liu, Daizhong, Rosolowsky, Erik, Thilker, David A., Watkins, Elizabeth J., Williams, Thomas G., Barnes, Ashley T., Bigiel, Frank, Boquien, Médéric, Chevance, Mélanie, Chiang, I-Da, Dale, Daniel A., Kruijssen, J. M. Diederik, Emsellem, Eric, Grasha, Kathryn, Groves, Brent, Hassani, Hamid, Hughes, Annie, Kreckel, Kathryn, Meidt, Sharon E., Vaught, Ryan J. Rickards, Sardone, Amy, Schinnerer, Eva
We present maps tracing the fraction of dust in the form of polycyclic aromatic hydrocarbons (PAHs) in IC 5332, NGC 628, NGC 1365, and NGC 7496 from JWST/MIRI observations. We trace the PAH fraction by combining the F770W ($7.7~\mu$m) and F1130W ($11
Externí odkaz:
http://arxiv.org/abs/2301.00578
Autor:
Chu, Bronwyn Reichardt, Fisher, Deanne B., Bolatto, Alberto D., Chisholm, John, Fielding, Drummond, Berg, Danielle, Cameron, Alex J., Glazebrook, Karl, Herrera-Camus, Rodrigo, Kacprzak, Glenn G., Lenkić, Laura, Li, Miao, McPherson, Daniel K., Nielsen, Nikole M., Obreschkow, Danail, Vaught, Ryan J. Rickards, Sandstrom, Karin
Publikováno v:
ApJ, 941, 163 (2022)
We compare 500~pc scale, resolved observations of ionised and molecular gas for the $z\sim0.02$ starbursting disk galaxy IRAS08339+6517, using measurements from KCWI and NOEMA. We explore the relationship of the star formation driven ionised gas outf
Externí odkaz:
http://arxiv.org/abs/2211.02063
Autor:
Rubin, Kate H. R., Juarez, Christian, Cooksey, Kathy L., Werk, Jessica K., Prochaska, J. Xavier, O'Meara, John M., Burchett, Joseph N., Vaught, Ryan J. Rickards, Kulkarni, Varsha P., Straka, Lorrie A.
We use medium-resolution Keck/Echellette Spectrograph and Imager spectroscopy of bright quasars to study cool gas traced by CaII 3934,3969 and NaI 5891,5897 absorption in the interstellar/circumgalactic media of 21 foreground star-forming galaxies at
Externí odkaz:
http://arxiv.org/abs/2208.04973