Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Werk, J."'
Autor:
Psaradaki, I., Corrales, L., Werk, J., Jensen, A. G., Costantini, E., Mehdipour, M., Cilley, R., Schulz, N., Kaastra, J., García, J. A., Valencic, L., Kallman, T., Paerels, F.
In this study, we investigate interstellar absorption lines along the line of sight toward the galactic low-mass X-ray binary Cygnus X-2. We combine absorption line data obtained from high-resolution X-ray spectra collected with Chandra and XMM-Newto
Externí odkaz:
http://arxiv.org/abs/2403.02664
The relevance of some galactic feedback mechanisms, in particular cosmic ray feedback and the hydrogen ionizing radiation field, has been challenging to definitively describe in a galactic context, especially far outside the galaxy in the circumgalac
Externí odkaz:
http://arxiv.org/abs/2401.11221
Autor:
Roman-Duval, J., Jenkins, E. B., Tchernyshyov, K., Clark, C. J. R., De Cia, A., Gordon, K. D., Hamanowicz, A., Lebouteiller, V., Rafelski, M., Sandstrom, K., Werk, J., Merica-Jones, P. Yanchulova
The metallicity and gas density dependence of interstellar depletions, the dust-to-gas (D/G), and dust-to-metal (D/M) ratios have important implications for how accurately we can trace the chemical enrichment of the universe; either by using FIR dust
Externí odkaz:
http://arxiv.org/abs/2202.04765
Autor:
Tchernyshyov, K., Werk, J. K., Wilde, M. C., Prochaska, J. X., Tripp, T. M., Burchett, J. N., Bordoloi, R., Howk, J. C., Lehner, N., O'Meara, J. M., Tejos, N., Tumlinson, J.
We combine 126 new galaxy-O VI absorber pairs from the CGM$^2$ survey with 123 pairs drawn from the literature to examine the simultaneous dependence of the column density of O VI absorbers ($N_{\rm O VI}$) on galaxy stellar mass, star formation rate
Externí odkaz:
http://arxiv.org/abs/2110.13167
Autor:
Zheng, Y., Putman, M. E., Emerick, A., McQuinn, K. B. W., Werk, J. K., Lockman, F. J., Oppenheimer, B. D., Fox, A. J., Kirby, E. N., Burchett, J. N.
We report a tentative detection of the circumgalactic medium (CGM) of WLM, an isolated, low-mass (log$M_*/M_\odot\approx7.6$), dwarf irregular galaxy in the Local Group (LG). We analyze an HST/COS archival spectrum of a quasar sightline (PHL2525), wh
Externí odkaz:
http://arxiv.org/abs/1909.05407
Autor:
Simionescu, A., Ettori, S., Werner, N., Nagai, D., Vazza, F., Akamatsu, H., Pinto, C., de Plaa, J., Wijers, N., Nelson, D., Pointecouteau, E., Pratt, G. W., Spiga, D., Vacanti, G., Lau, E., Rossetti, M., Gastaldello, F., Biffi, V., Bulbul, E., Collon, M. J., Herder, J. W. den, Eckert, D., Fraternali, F., Mingo, B., Pareschi, G., Pezzulli, G., Reiprich, T. H., Schaye, J., Walker, S. A., Werk, J.
The majority of the ordinary matter in the local Universe has been heated by strong structure formation shocks and resides in a largely unexplored hot, diffuse, X-ray emitting plasma that permeates the halos of galaxies, galaxy groups and clusters, a
Externí odkaz:
http://arxiv.org/abs/1908.01778
Autor:
Voit, G. M., Babul, A., Babyk, Iu., Bryan, G. L., Chen, H. -W., Donahue, M., Fielding, D., Gaspari, M., Li, Y., McDonald, M., O'Shea, B. W., Prasad, D., Sharma, P., Sun, M., Tremblay, G., Werk, J., Werner, N., Zahedy, F.
During the last decade, numerous and varied observations, along with increasingly sophisticated numerical simulations, have awakened astronomers to the central role the circumgalactic medium (CGM) plays in regulating galaxy evolution. It contains the
Externí odkaz:
http://arxiv.org/abs/1903.11212
Cosmic gas cycles in and out of galaxies, but outside of galaxies it is difficult to observe except for the absorption lines that circumgalactic clouds leave in the spectra of background quasars. Using photoionization modeling of those lines to deter
Externí odkaz:
http://arxiv.org/abs/1903.00084
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Autor:
Audcent-Ross, Fiona M., Meurer, Gerhardt R., Wong, O. I., Zheng, Z., Hanish, D., Zwaan, M. A., Bland-Hawthorn, J., Elagali, A., Meyer, M., Putman, M. E., Ryan-Webber, E. V., Sweet, S. M., Thilker, D. A., Seibert, M., Allen, R., Dopita, M. A., Doyle-Pegg, M. T., Drinkwater, M., Ferguson, H. C., Freeman, K. C., Heckman, T. M., Kennicutt Jr, R. C., Kilborn, V. A., Kim, J. H., Knezek, P. M., Koribalski, B., Smith, R. C., Staveley-Smith, L., Webster, R. L., Werk, J. K.
For the first time both H$\alpha$ and far-ultraviolet (FUV) observations from an HI-selected sample are used to determine the dust-corrected star formation rate density (SFRD: $\dot{\rho}$) in the local Universe. Applying the two star formation rate
Externí odkaz:
http://arxiv.org/abs/1806.05875