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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a Very Large Array (VLA) HI 21cm map and optical observations ofthe region around one of the nearest damped Lyman-alpha absorbers beyond thelocal group, SBS 1543+593. Two previously uncataloged galaxies have beendiscovered and a redshift has been determined for a third. All three of thesegalaxies are at the redshift of SBS 1543+593 and are ~185 kpc from the dampedLyman-alpha absorber. We discuss the HI and optical properties of SBS 1543+593and its newly identified neighbors. Both SBS 1543+593 and Dwarf 1 have baryoniccomponents that are dominated by neutral gas -- unusual for damped Lyman-alphaabsorbers for which only ~5% of the HI cross-section originates in suchstrongly gas-dominated systems. What remains unknown is whether low massgas-rich groups are common surrounding gas-rich galaxies in the local universeand whether the low star-formation rate in these systems is indicative of ayoung system or a stable, slowly evolving system. We discuss these evolutionaryscenarios and future prospects for answering these questions.Comment: 11 pages, AJ accepte

The Nearby Damped Lyα Absorber SBS 1543+593: A Large HiEnvelope in a Gas-rich Galaxy Group