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researcher

Sam A. Usman

10 papers hereh-index 342 citations9 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author2
  • middle author4
  • last author4

Across the 10 of 10 papers where every author was matched, so the position is known.

fields
  • astro-ph.GA6
  • astro-ph.SR4

identity via Semantic Scholar / OpenAlex

activity
20242026
most citedS5: New insights from deep spectroscopic observations of the tidal tails of the globular clusters NGC 1261 and NGC 1904

11 citations · 23 across the 9 of their papers we have counts for

collaborators
Showing 2025Show all

3 papers · 1 filter

astro-ph.SR2025

Detailed Chemical Abundance Analysis of the Brightest Stars in the Turranburra and Willka Yaku Stellar Streams

Kaitlin B. Webber, Terese T. Hansen, Jennifer L. Marshall +20

We present a detailed chemical abundance analysis of the three brightest known stars from each of the Turranburra and Willka Yaku stellar streams using high-resolution Magellan/MIK…

astro-ph.GA2025

Chemical Abundances in the Metal-Poor Globular Cluster ESO 280-SC06: A Formerly Massive, Tidally Disrupted Globular Cluster

Sam A. Usman, Alexander P. Ji, Jandrie Rodriguez +6

We present the first high-resolution abundance study of ESO 280-SC06, one of the least luminous and most metal-poor gravitationally bound Milky Way globular clusters. Using Magella…

astro-ph.GA2025★ 7 cited

Flipping of the tidal tails of the Ophiuchus stream due to the decelerating Galactic bar

Yong Yang, Geraint F. Lewis, Denis Erkal +16

The Ophiuchus stellar stream presents a puzzle due to its complicated morphology, with a substructure perpendicular to the main track (spur), a broadened tail (fanning), and a shor…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.