Zobrazeno 1 - 10
of 463
pro vyhledávání: '"Jenkins, Edward"'
Autor:
Konstantopoulou, Christina, De Cia, Annalisa, Krogager, Jens-Kristian, Ledoux, Cédric, Roman-Duval, Julia, Jenkins, Edward B., Ramburuth-Hurt, Tanita, Velichko, Anna
We present a novel method to characterize dust depletion, namely, the depletion of metals into dust grains. We used observed correlations among relative abundances combining a total of 17 metals in diverse galactic environments, including the Milky W
Externí odkaz:
http://arxiv.org/abs/2410.06155
Autor:
Hamanowicz, Aleksandra, Tchernyshyov, Kirill, Roman-Duval, Julia, Jenkins, Edward B., Rafelski, Marc, Gordon, Karl D., Zheng, Yong, Garcia, Miriam, Werk, Jessica
The cycling of metals between interstellar gas and dust is a critical aspect of the baryon cycle of galaxies, yet our understanding of this process is limited. This study focuses on understanding dust depletion effects in the low metallicity regime (
Externí odkaz:
http://arxiv.org/abs/2402.18733
Autor:
Bowen, David V., Chelouche, Doron, Jenkins, Edward B., Tripp, Todd M., Pettini, Max, York, Donald G., Frye, Brenda L.
We present Hubble Space Telescope far-UV spectra of four QSOs whose sightlines pass through the halo of NGC 1097 at impact parameters of rho = 48-165 kpc. NGC 1097 is a nearby spiral galaxy that has undergone at least two minor merger events, but no
Externí odkaz:
http://hdl.handle.net/10150/621229
http://arizona.openrepository.com/arizona/handle/10150/621229
http://arizona.openrepository.com/arizona/handle/10150/621229
Autor:
Ritchey, Adam M., Jenkins, Edward B., Shull, J. Michael, Savage, Blair D., Federman, S. R., Lambert, David L.
Publikováno v:
ApJ, 952:57 (26pp), 2023
In this investigation, we present an analysis of the metallicity distribution that pertains to neutral gas in the local Galactic interstellar medium (ISM). We derive relative ISM metallicities for a sample of 84 sight lines probing diffuse atomic and
Externí odkaz:
http://arxiv.org/abs/2301.09743
Autor:
Cashman, Frances H., Fox, Andrew J., Wakker, Bart P., Ashley, Trisha, Massa, Derck, Jenkins, Edward B., Krishnarao, Dhanesh, Lockman, Felix J., Benjamin, Robert A., Bordoloi, Rongmon, Kim, Tae-Sun
We characterize the chemical and physical conditions in an outflowing high-velocity cloud in the inner Galaxy. We report a super-solar metallicity of [O/H] = $+0.36\pm0.12$ for the high-velocity cloud at $v_\mathrm{LSR}$ = 125.6 km s$^{-1}$ toward th
Externí odkaz:
http://arxiv.org/abs/2210.11583
Autor:
Ashley, Trisha, Fox, Andrew J., Cashman, Frances H., Lockman, Felix J., Bordoloi, Rongmon, Jenkins, Edward B., Wakker, Bart P., Karim, Tanveer
Publikováno v:
Nature Astronomy (2022)
The Galactic Center is surrounded by two giant plasma lobes known as the Fermi Bubbles, extending ~10 kpc both above and below the Galactic plane. Spectroscopic observations of Fermi Bubble directions at radio, ultraviolet, and optical wavelengths ha
Externí odkaz:
http://arxiv.org/abs/2207.08838
Autor:
Roman-Duval, Julia, Jenkins, Edward B., Tchernyshyov, Kirill, Clark, Christopher J. R., De Cia, Annalisa, Gordon, Karl D., Hamanowicz, Aleksandra, Lebouteiller, Vianney, Rafelski, Marc, Sandstrom, Karin, Werk, Jessica, Merica-Jones, Petia Yanchulova
The evolution of the metal content of the universe can be tracked through rest-frame UV spectroscopy of damped Ly-$\alpha$ systems (DLAs). Gas-phase abundances in DLAs must be corrected for dust depletion effects, which can be accomplished by calibra
Externí odkaz:
http://arxiv.org/abs/2206.03639
Publikováno v:
In Cognition January 2025 254
Autor:
Cashman, Frances H., Fox, Andrew J., Savage, Blair D., Wakker, Bart P., Krishnarao, Dhanesh, Benjamin, Robert A., Richter, Philipp, Ashley, Trisha, Jenkins, Edward B., Lockman, Felix J., Bordoloi, Rongmon, Kim, Tae-Sun
We report the first direct detection of molecular hydrogen associated with the Galactic nuclear wind. The Far-Ultraviolet Spectroscopic Explorer spectrum of LS 4825, a B1 Ib-II star at $l,b$ = 1.67$^{\circ}$,$-$6.63$^{\circ}$ lying $d$ = 9.9$^{+1.4}_
Externí odkaz:
http://arxiv.org/abs/2112.03335
Autor:
De Cia, Annalisa, Jenkins, Edward B., Fox, Andrew J., Ledoux, Cédric, Ramburuth-Hurt, Tanita, Konstantopoulou, Christina, Petitjean, Patrick, Krogager, Jens-Kristian
Publikováno v:
Nature, 597, 206-208 (2021)
The Interstellar Medium (ISM) comprises gases at different temperatures and densities, including ionized, atomic, molecular species, and dust particles. The neutral ISM is dominated by neutral hydrogen and has ionization fractions up to 8%. The conce
Externí odkaz:
http://arxiv.org/abs/2109.03249