Počet záznamů: 1
The VIMOS Ultra Deep Survey The role of HI kinematics and HI column density on the escape of Ly alpha photons in star-forming galaxies at 2 < z < 4
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SYSNO ASEP 0484648 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The VIMOS Ultra Deep Survey The role of HI kinematics and HI column density on the escape of Ly alpha photons in star-forming galaxies at 2 < z < 4 Tvůrce(i) Guaita, L. (SE)
Talia, M. (IT)
Pentericci, L. (IT)
Verhamme, A. (CH)
Cassata, P. (CL)
Lemaux, B. C. (US)
Orlitová, Ivana (ASU-R) RID, ORCID
Ribeiro, B. (FR)
Schaerer, D. (FR)
Zamorani, G. (IT)
Garilli, B. (IT)
Le Brun, V. (GF)
Le Fevre, O. (FR)
Maccagni, D. (IT)
Tasca, L. A. M. (FR)
Thomas, R. (CL)
Vanzella, E. (IT)
Zucca, E. (IT)
Amorin, R. (GB)
Bardelli, S. (IT)
Castellano, M. (IT)
Grazian, A. (IT)
Hathi, N. P. (FR)
Koekemoer, A. (US)
Marchi, F. (IT)Celkový počet autorů 25 Zdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 606, September (2017), A19/1-A19/17Poč.str. 17 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova lyman break galaxies ; cosmic reionization ; emitting galaxies Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GJ17-06217Y GA ČR - Grantová agentura ČR Institucionální podpora ASU-R - RVO:67985815 UT WOS 000412875200001 EID SCOPUS 85030701606& DOI 10.1051/0004-6361/201730603 Anotace We wish to assess the role of kinematics and neutral hydrogen column density in the escape and distribution of Ly alpha photons. We selected a sample of 76 Ly alpha emitting galaxies from the VIMOS Ultra Deep Survey (VUDS) at 2 <= z <= 4. We estimated the velocity of the neutral gas flowing out of the interstellar medium as the velocity off set, Delta v, between the systemic redshift (z(sys)) and the center of low-ionization absorption line systems (LIS). To increase the S/N of VUDS spectra, we stacked subsamples defined based on median values of their photometric and spectroscopic properties. We measured the systemic redshift from the rest-frame UV spectroscopic data using the CIII] 1908 nebular emission line, and we considered SiII1526 as the highest signal-to-noise LIS line. We calculated the Ly alpha peak shift with respect to the z(sys), the EW(Ly alpha), and the Ly alpha spatial extension, Ext(Ly alpha-C), from the in the 2D stacked spectra. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2018
Počet záznamů: 1