X-shooter and ALMA spectroscopy of GRB 161023A A study of metals and molecules in the line of sight towards a luminous GRB

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00540206" target="_blank" >RIV/67985815:_____/18:00540206 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/0004-6361/201833094" target="_blank" >https://doi.org/10.1051/0004-6361/201833094</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201833094" target="_blank" >10.1051/0004-6361/201833094</a>

Jazyk výsledku

angličtina

Název v původním jazyce

X-shooter and ALMA spectroscopy of GRB 161023A A study of metals and molecules in the line of sight towards a luminous GRB

Popis výsledku v původním jazyce

We aim to use the afterglow of GRB 161023A at a redshift z = 2.710 as a background source to study the environment of the explosion and the intervening systems along its line of sight. We infer a host-galaxy metallicity of [Zn/H] = -1.11 +/- 0.07, which, corrected for dust depletion, results in [X/H] = -0.94 +/- 0.08. We do not detect molecular features in the ALMA data, but we derive limits on the molecular content of log(N-CO/cm(-2)) < 15.7 and log(NHCO+/cm(-2)) < 13.2, which are consistent with those that we obtain from the optical spectra, log(N-H2/cm(-2)) < 15.2 and log(N-CO/cm(-2)) < 14.5. Within the host galaxy, we detect three velocity systems through UV, optical and NIR absorption spectroscopy, all with levels that were excited by the GRB afterglow. We determine the distance from these systems to the GRB to be in the range between 0.7 and 1.0 kpc. The sight line to GRB 161023A shows nine independent intervening systems, most of them with multiple components.n

Název v anglickém jazyce

X-shooter and ALMA spectroscopy of GRB 161023A A study of metals and molecules in the line of sight towards a luminous GRB

Popis výsledku anglicky

We aim to use the afterglow of GRB 161023A at a redshift z = 2.710 as a background source to study the environment of the explosion and the intervening systems along its line of sight. We infer a host-galaxy metallicity of [Zn/H] = -1.11 +/- 0.07, which, corrected for dust depletion, results in [X/H] = -0.94 +/- 0.08. We do not detect molecular features in the ALMA data, but we derive limits on the molecular content of log(N-CO/cm(-2)) < 15.7 and log(NHCO+/cm(-2)) < 13.2, which are consistent with those that we obtain from the optical spectra, log(N-H2/cm(-2)) < 15.2 and log(N-CO/cm(-2)) < 14.5. Within the host galaxy, we detect three velocity systems through UV, optical and NIR absorption spectroscopy, all with levels that were excited by the GRB afterglow. We determine the distance from these systems to the GRB to be in the range between 0.7 and 1.0 kpc. The sight line to GRB 161023A shows nine independent intervening systems, most of them with multiple components.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

—

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Svazek periodika

620

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

23

Strana od-do

A119

Kód UT WoS článku

000452484100001

EID výsledku v databázi Scopus

2-s2.0-85058503575