activity
19952025
most citedThe Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey

1.5k citations · 12.7k across the 201 of their papers we have counts for

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Showing 1997Show all

6 papers · 1 filter

astro-ph1997★ 2 cited

Polars -- multisite emission -- multiwavelength observation

Axel D. Schwope, K. Beuermann, D. A. H. Buckley +12

We review the main observational characteristics of AM Herculis stars (polars) at X-ray, EUV, UV, IR and optical wavelengths. Particular emphasis is given to multi-epoch, multi-wav…

astro-ph1997★ 36 cited

Optical and X-ray properties of the RIXOS AGN: II - Emission lines

E. M. Puchnarewicz, K. O. Mason, F. J. Carrera +9

We present the optical and UV emission line properties of 160 X-ray selected AGN taken from the RIXOS survey (including Halpha, Hbeta, [OIII]5007, MgII2798 and CIII]1909). This sam…

astro-ph1997★ 2 cited

Phase-resolved high-resolution spectrophotometry of the eclipsing polar HU Aquarii

Axel D. Schwope, Karl-Heinz Mantel, Keith Horne

We present phase-resolved spectroscopy of the bright, eclipsing polar HU Aqr obtained with high time (~30sec) and spectral (1.6 A) resolution when the system was in a high accretio…

astro-ph1997

On the mass of the white dwarf in UZ Fornacis

Axel D. Schwope, Sabine Mengel, Klaus Beuermann

We present phase-resolved spectroscopy of the eclipsing AM Herculis star UZ For obtained when the system was in its low state of accretion. Faint residual Halpha-emission and NaI a…

astro-ph1997★ 25 cited

Phase-resolved spectroscopy and photometry of the eclipsing polar EP Draconis (=H1907+690)

Axel D. Schwope, Sabine Mengel

We present phase-resolved optical spectroscopy and CCD photometry of the faint eclipsing polar EP Dra (H1907+690). A revised ephemeris is derived which connects all 32000 binary cy…

astro-ph1997★ 7 cited

Cyclotron spectroscopy of VV Puppis

Axel D. Schwope, Klaus Beuermann

We present phase-resolved spectrophotometric observations of VV Puppis obtained during two different states of accretion. We confirm the detection of cyclotron lines from emission…