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 stellar population study of three HII galaxies (Mrk 36, UM 408,and UM 461) based on the analysis of new ground-based high resolutionnear-infrared J, H and Kp broad-band and Br narrow-band images obtained withGemini/NIRI. We identify and determine relative ages and masses of theelementary star clusters and/or star cluster complexes of the starburst regionsin each of these galaxies by comparing the colors with evolutionary synthesismodels that include the contribution of stellar continuum, nebular continuumand emission lines. We found that the current star cluster formation efficiencyin our sample of low luminosity HII galaxies is ~10%. Therefore, most of therecent star formation is not in massive clusters. Our findings seem to indicatethat the star formation mode in our sample of galaxies is clumpy, and thatthese complexes are formed by a few massive star clusters with masses > 10^4Mo. The age distribution of these star cluster complexes shows that the currentburst started recently and likely simultaneously over short time scales intheir host galaxies, triggered by some internal mechanism. Finally, thefraction of the total cluster mass with respect to the low surface brightness(or host galaxy) mass, considering our complete range in ages, is less than 1%.

Star Cluster Complexes and the Host Galaxy in Three HII Galaxies: Mrk 36, UM 408, and UM 461