The cosmic ultraviolet baryon survey (CUBS)
| Autor: | Jenny E. Greene, Robert A. Simcoe, Gregory Walth, Sebastiano Cantalupo, Marc Rafelski, Mandy C. Chen, Michael Rauch, Mary E. Putman, Kathy L. Cooksey, Joop Schaye, Thomas J. Cooper, Sebastian Lopez, Steven V. Penton, Erin Boettcher, Hsiao-Wen Chen, Claude André Faucher-Giguère, Gwen C. Rudie, Sean D. Johnson, John S. Mulchaey, Patrick Petitjean, Fakhri S. Zahedy |
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| Přispěvatelé: | Cooper, T, Rudie, G, Chen, H, Johnson, S, Zahedy, F, Chen, M, Boettcher, E, Walth, G, Cantalupo, S, Cooksey, K, Faucher-Giguere, C, Greene, J, Lopez, S, Mulchaey, J, Penton, S, Petitjean, P, Putman, M, Rafelski, M, Rauch, M, Schaye, J, Simcoe, R |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Stellar mass
Cosmic Origins Spectrograph Astrophysics::High Energy Astrophysical Phenomena Astrophysics - astrophysics of galaxies FOS: Physical sciences quasars: absorption line Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Surveys Spectral line symbols.namesake galaxies: haloe Astrophysics::Solar and Stellar Astrophysics survey Absorption (logic) Galaxies: haloes Astrophysics::Galaxy Astrophysics Intergalactic medium Physics Balmer series Astronomy and Astrophysics Quasars: absorption lines Galaxy Lyman limit Baryon haloes intergalactic medium quasars: absorption lines [surveys galaxies] Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) symbols |
| Zdroj: | Monthly Notices of the Royal Astronomical Society, 508 (3) Monthly Notices of the Royal Astronomical Society, 508(3), 4359-4384 |
| Popis: | We present a detailed study of two partial Lyman limit systems (pLLSs) of neutral hydrogen column density $N_\mathrm{H\,I}\approx(1-3)\times10^{16}\,\mathrm{cm}^{-2}$ discovered at $z=0.5$ in the Cosmic Ultraviolet Baryon Survey (CUBS). Available far-ultraviolet spectra from the Hubble Space Telescope Cosmic Origins Spectrograph and optical echelle spectra from MIKE on the Magellan Telescopes enable a comprehensive ionization analysis of diffuse circumgalactic gas based on resolved kinematics and abundance ratios of atomic species spanning five different ionization stages. These data provide unambiguous evidence of kinematically aligned multi-phase gas that masquerades as a single-phase structure and can only be resolved by simultaneous accounting of the full range of observed ionic species. Both systems are resolved into multiple components with inferred $\alpha$-element abundance varying from $[\alpha/\text{H}]\approx\!{-0.8}$ to near solar and densities spanning over two decades from $\log n_\mathrm{H}\mathrm{cm}^{-3}\approx\!-2.2$ to $ Comment: Accepted for publication in MNRAS, 27 pages, 21 figures |
| Databáze: | OpenAIRE |
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