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 integral field spectroscopy in the near infrared (NIR) of He 2-10and NGC 5253, two well known nearby dwarf irregular galaxies showing highstar-formation rates. Our data provide an unprecedented detailed view of theinterstellar medium and star formation in these galaxies, allowing us to obtainspatially resolved information from the NIR emission and absorption linetracers. We study the spatial distribution and kinematics of differentcomponents of the interstellar medium (ISM) mostly through the Bracket serieslines, the molecular hydrogen spectrum, [FeII] emission, and CO absorptions.Although the ISM is mostly photo-excited, as derived by the [FeII]/Bry and H2line ratios, some regions corresponding to non-thermal radio sources show a[FeII]/Bry excess due to a significant contribution of SN driven shocks. In He2-10 we find that the molecular gas clouds, as traced by CO(2-1) and H2infrared line, show consistent morphologies and velocities when studied withthe two different tracers. Moreover, there is a clear association with theyoungest super star clusters as traced by the ionized gas. In the same galaxywe observe a cavity depleted of gas, which is surrounded by some of the mostactive regions of star formation, that we interpret as a signature offeedback-induced star formation from older episodes of star formation. Finally,we measured high turbulence in the ISM of both galaxies, sigma~30-80 km/s,driven by the high star-formation activity.

Integral-field near-infrared spectroscopy of two blue dwarf galaxies: NGC 5253 and He 2-10