AGN STORM 2. II. Ultraviolet Observations of Mrk 817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00573378" target="_blank" >RIV/67985815:_____/23:00573378 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0343842" target="_blank" >https://hdl.handle.net/11104/0343842</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/acc45a" target="_blank" >10.3847/1538-4357/acc45a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

AGN STORM 2. II. Ultraviolet Observations of Mrk 817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope

Popis výsledku v původním jazyce

We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the activengalactic nucleus Mrk 817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble SpacenTelescope. Our ultraviolet observations are accompanied by X-ray, optical, and near-infrared observations as partnof the AGN Space Telescope and Optical Reverberation Mapping Program 2 (AGN STORM 2). Using the cross-ncorrelation lag analysis method, we find significant correlated variations in the continuum and emission-line lightncurves. We find that the emission-line responses to continuum variations are more complex than a simple smoothed, shifted, and scaled version of the continuum light curve. We also measure velocity-resolved lags for the Lyα and C IV emission lines.nThe lag profile in the blue wing of Lyα is consistent with virial motion, with longer lags dominating at lowernvelocities, and shorter lags at higher velocities. The C IV lag profile shows the signature of a thick rotating disk,nwith the shortest lags in the wings, local peaks at ±1500 km s−1 , and a local minimum at the line center. The othernemission lines are dominated by broad absorption lines and blending with adjacent emission lines. These requirendetailed models, and will be presented in future work.

Název v anglickém jazyce

AGN STORM 2. II. Ultraviolet Observations of Mrk 817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope

Popis výsledku anglicky

We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the activengalactic nucleus Mrk 817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble SpacenTelescope. Our ultraviolet observations are accompanied by X-ray, optical, and near-infrared observations as partnof the AGN Space Telescope and Optical Reverberation Mapping Program 2 (AGN STORM 2). Using the cross-ncorrelation lag analysis method, we find significant correlated variations in the continuum and emission-line lightncurves. We find that the emission-line responses to continuum variations are more complex than a simple smoothed, shifted, and scaled version of the continuum light curve. We also measure velocity-resolved lags for the Lyα and C IV emission lines.nThe lag profile in the blue wing of Lyα is consistent with virial motion, with longer lags dominating at lowernvelocities, and shorter lags at higher velocities. The C IV lag profile shows the signature of a thick rotating disk,nwith the shortest lags in the wings, local peaks at ±1500 km s−1 , and a local minimum at the line center. The othernemission lines are dominated by broad absorption lines and blending with adjacent emission lines. These requirendetailed models, and will be presented in future work.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

1538-4357

Svazek periodika

948

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

85

Kód UT WoS článku

000993590900001

EID výsledku v databázi Scopus

2-s2.0-85159191492