Zobrazeno 1 - 10
of 16
pro vyhledávání: '"K. N. Telikova"'
We present a spectroscopic investigation with VLT/X-shooter of seven candidate extremely strong damped Lyman-$\alpha$ absorption systems (ESDLAs, $N(\text{HI})\ge 5\times 10^{21}$ cm$^{-2}$) observed along quasar sightlines. We confirm the extremely
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5be4e5fb606c1e824b60336d2c371e6f
Autor:
A. Ranjan, R. Srianand, P. Petitjean, G. Shaw, Y.-K. Sheen, S. A. Balashev, N. Gupta, C. Ledoux, K. N. Telikova
We present the results of a spectroscopic analysis of extremely strong damped Lyman-{\alpha} absorbers (ESDLAs, log N(Hi)>=21.7) observed with VLT-XShooter. ESDLAs probe gas from within the star-forming disk of the associated galaxies and thus ESDLAs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecb049f90a45face646b2f37b71ce557
We discuss observations of CII*/CII ratios and cooling rates due to [CII]$\,$158$\mu$m emission in high-redshift intervening damped Lyman-$\alpha$ systems towards quasars. We show that the observed bimodality in the CII cooling rates actually reflect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a442903da40b5b19af4185e331885e3
http://arxiv.org/abs/2110.13591
http://arxiv.org/abs/2110.13591
Autor:
Jacqueline Bergeron, G. Duchoquet, A. De Cia, K. N. Telikova, Sebastian Lopez, P. Boissé, S. Balashev, Pasquier Noterdaeme, Jens-Kristian Krogager, C. Ledoux
We present a high-resolution (R=140,000) spectrum of the bright quasar HE0001-2340 (z=2.26), obtained with ESPRESSO at the Very Large Telescope. We analyse three systems at z=0.45, z=1.65, and z=2.19 using multiple-component Voigt-profile fitting. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6e51d4857e89985c600d388325b3369
http://arxiv.org/abs/2105.00697
http://arxiv.org/abs/2105.00697
Autor:
Igor D. Karachentsev, K. N. Telikova
Publikováno v:
Astronomische Nachrichten. 339:615-622
We calculate the mean density profiles for luminous and dark matter on distance scales $D \sim(1 - 100)$ Mpc around us using recent all-sky catalogs of galaxy groups. Within the Local Volume $( D < 11 ~\rm Mpc)$ we derived the mean stellar density $\
We present a new method to infer parameters of the temperature-density relation in the intergalactic medium in the post-reionization epoch at $z\sim 2-4$. This method is based on the analysis of the Ly$\alpha$ absorbers distribution over column densi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3196402dd990c44ec705761f5a628bc
http://arxiv.org/abs/1910.13184
http://arxiv.org/abs/1910.13184
Publikováno v:
Journal of Physics: Conference Series. 2103:012028
We investigate evolution of physical parameters of the intergalactic medium using an analysis of Lya forest lines detected towards distant quasars. We used the enlarged sample of 98 quasars obtained with Keck/HIRES and VLT/UVES. We show that taking i
Publikováno v:
Journal of Physics: Conference Series. 1697:012034
We present a spectroscopic analysis of seven Extremely Strong Damped Lyα systems at redshifts z = 2–3, obtained with the intermediate-resolution spectrograph X-shooter on the Very Large Telescope. For all systems we estimated column densities of t
Publikováno v:
Journal of Physics: Conference Series. 1400:022024
We investigate a contribution of the Jeans smoothing to the minimal width of Ly$��$ forest lines and discuss how the accounting for this additional broadening affects the inferred parameters of the intergalactic matter equation of state. We estim
Publikováno v:
Journal of Physics: Conference Series. 1135:012010