8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Aarhus UniversityDK115 papers
- University of TurkuFI96 papers
- Centre National de la Recherche ScientifiqueFR95 papers
- Instituto de Astrofísica de CanariasES91 papers
- National Institute for AstrophysicsIT87 papers
- European Southern ObservatoryCL84 papers
- University of CopenhagenDK77 papers
- Universidad de La LagunaES70 papers
- Instituto de Astrofísica de AndalucíaES68 papers
- Stockholm UniversitySE66 papers
- AlbaNovaSE55 papers
- KU LeuvenBE52 papers
12 papers · 1 filter
A 6.3-h superhump in the cataclysmic variable TV Columbae: the longest yet seen
A. Retter, C. Hellier, T. Augusteijn +5
We present results from a two week multi-longitude photometric campaign on TV Col held in 2001 January. The data confirm the presence of a permanent positive superhump found in re-…
Optical Photometry of GRB 021004: The First Month
Stephen T. Holland, Michael Weidinger, Johan P. U. Fynbo +17
We present U,B,V,R_C,and I_C photometry of the optical afterglow of the gamma-ray burst GRB 021004 taken at the Nordic Optical Telescope between approximately eight hours and 30 da…
Absorption Systems in the Spectrum of GRB 021004
P. Møller, J. P. U. Fynbo, J. Hjorth +10
We report on a 3600 s spectrum of GRB 021004 obtained with the Nordic Optical Telecope on La Palma 10.71 hours after the burst. We identify absorption lines from five systems at re…
The Faint Sky Variability Survey I: Goals and data reduction process
Paul J. Groot, Paul M. Vreeswijk, Mark E. Huber
The Faint Sky Variability Survey is aimed at finding photometric and/or astrometric variable objects in the brightness range between 16<V<24 on timescales between tens of minutes a…
Simultaneous Optical and X-ray Observations of Flares and Rotational Modulation on the RS CVn Binary HR 1099 (V711 Tau) from the MUSICOS 1998 Campaign
D. Garcia-Alvarez, B. H. Foing, D. Montes +2
We present simultaneous and continuous observations of the H, H, He {\sc i} D, Na {\sc i} D,D doublet and the Ca {\sc ii} H & K lines for the RS CVn system…
Time delay and lens redshift for the doubly imaged BAL quasar SBS1520+530
I. Burud, J. Hjorth, F. Courbin +6
We present optical R-band light curves of the gravitationally lensed quasar SBS1520+530 derived from data obtained at the Nordic Optical Telescope. A time delay of 130+/-3 days (1…
The afterglow and complex environment of the optically dim burst GRB 980613
Jens Hjorth, Bjarne Thomsen, Svend R. Nielsen +15
We report the identification of the optical afterglow of GRB 980613 in R- and I-band images obtained between 16 and 48 hours after the gamma-ray burst. Early near-infrared (NIR) H…
The time delay of the quadruple quasar RX J0911.4+0551
Jens Hjorth, Ingunn Burud, Andreas O. Jaunsen +9
We present optical lightcurves of the gravitationally lensed components A (=A1+A2+A3) and B of the quadruple quasar RX J0911.4+0551 (z = 2.80). The observations were primarily obta…
The X-ray transient XTE J1859+226 in Outburst & Quiescence
C. Zurita, C. Sanchez-Fernandez, J. Casares +11
We present optical photometry and spectroscopy of the X-ray transient XTE J1859+226, obtained during outburst and its subsequent decay to quiescence. Both the X-ray and optical pro…
The detection of the donor star in IY UMa
Daniel J. Rolfe, Timothy M. C. Abbott, Carole A. Haswell
We present the results of a search for the donor star in the high inclination SU UMa type cataclysmic variable IY UMa. We detect absorption features in the near infrared consistent…
Diffraction-limited CCD imaging with faint reference stars
R. N. Tubbs, J. E. Baldwin, C. D. Mackay +1
By selecting short exposure images taken using a CCD with negligible readout noise we obtained essentially diffraction-limited 810 nm images of faint objects using nearby reference…
Deep Ly-alpha imaging of two z=2.04 GRB host galaxy fields
J. P. U. Fynbo, P. Moller, B. Thomsen +8
We report on the results of deep narrow-band Ly-alpha, U and I imaging of the fields of two GRBs at z=2.04 (GRB 000301C and GRB 000926). We find that the host galaxy of GRB 000926…