activity
19972012
most citedBright Metal-Poor Stars from the Hamburg/ESO Survey. I. Selection and Follow-up Observations from 329 Fields

194 citations · 987 across the 25 of their papers we have counts for

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Showing 2002 · astro-phShow all

2 papers · 2 filters

astro-ph2002

Caught in the act: a helium-reionizing quasar near the line of sight to Q0302-003

P. Jakobsen, R. A. Jansen, S. Wagner +1

We report the discovery of a quasar at z=3.050+/-0.003, closely coincident in redshift with the isolated low-opacity feature seen near z~3.056 in the otherwise black portion of the…

astro-ph2002★ 2 cited

Double degenerates from the supernova Ia progenitor survey (SPY)

C. Karl, R. Napiwotzki, U. Heber +4

We report on follow-up observations of double degenerate (DD) white dwarfs from the Supernovae Ia Progenitor Survey (SPY). Orbital parameters of four systems, including a massive s…