English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a multi-facility study of the optical spectrum of theextragalactic globular cluster RZ2109, which hosts a bright black hole X-raysource. The optical spectrum of RZ2109 shows strong and very broad [OIII]\lambda \lambda 4959,5007 emission in addition to the stellar absorptionlines typical of a globular cluster. We use observations over an extendedperiod of time to constrain the variability of these [O III] emission lines. Wefind that the equivalent width of the lines is similar in all of the datasets;the change in L[O III]\lambda 5007 is \ltsim 10% between the first and lastobservations, which were separated by 467 days. The velocity profile of theline also shows no significant variability over this interval. Using a simplegeometric model we demonstrate that the observed [O III]\lambda 5007 linevelocity structure can be described by a two component model with most of theflux contributed by a bipolar conical outflow of about 1,600 km/s, and theremainder from a Gaussian component with a FWHM of several hundred km/s.

Velocity Structure and Variability of [O III] Emission in Black Hole Host Globular Cluster RZ2109