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
14 papers · 1 filter
On the H emission from the Cephei system
R. S. Schnerr, H. F. Henrichs, R. D. Oudmaijer +1
Be stars, which are characterised by intermittent emission in their hydrogen lines, are known to be fast rotators. This fast rotation is a requirement for the formation of a Kepler…
The 2dF BL Lac Survey II
D. Londish, S. M. Croom, J. Heidt +6
We report on our further analysis of the expanded and revised sample of potential BL Lac objects (the 2BL) optically identified from two catalogues of blue-selected (UV excess) poi…
Broadband UBVRI Photometry of Horizontal-Branch and Metal-Poor Candidates from the HK and Hamburg/ESO Surveys. I
Timothy C. Beers, Chris Flynn, Silvia Rossi +17
We report broadband UBV and/or BVRI CCD photometry for a total of 1857 stars in the thick-disk and halo populations of the Galaxy. The majority of our targets were selected as cand…
A multi-wavelength census of star formation activity in the young embedded cluster around Serpens/G3-G6
A. A. Djupvik, Ph. Andre, S. Bontemps +4
Aims. The aim of this paper is to characterise the star formation activity in the poorly studied embedded cluster Serpens/G3-G6, located ~ 45' (3 pc) to the south of the Serpens Cl…
Multifrequency variability of the blazar AO 0235+164. The WEBT campaign in 2004-2005 and long-term SED analysis
C. M. Raiteri, M. Villata, M. Kadler +3
A huge multiwavelength campaign targeting the blazar AO 0235+164 was organized by the Whole Earth Blazar Telescope (WEBT) in 2003-2005 to study the variability properties of the so…
First stars X. The nature of three unevolved Carbon-Enhanced Metal-Poor stars
T. Sivarani, T. C. Beers, P. Bonifacio +13
From high-resolution VLT/UVES spectra (R~43,000), we determine abundances or upper limits for Li, C, N, O, and other important elements, as well as 12C/13C isotopic ratio for three…
Short timescale variability in the Faint Sky Variability Survey
L. Morales-Rueda, P. J. Groot, T. Augusteijn +3
We present the V band variability analysis of the point sources in the Faint Sky Variability Survey on time scales from 24 minutes to tens of days. We find that about one percent o…
Microlensing variability in time-delay quasars
D. Paraficz, J. Hjorth, I. Burud +2
We have searched for microlensing variability in the light curves of five gravitationally lensed quasars with well-determined time delays: SBS 1520+530, FBQ 0951+2635, RX J0911+055…
Extinction Curves of Lensing Galaxies out to z=1
Árdís Elíasdóttir, Jens Hjorth, Sune Toft +2
We present a survey of the extinction properties of ten lensing galaxies, in the redshift range z = 0.04 - 1.01, using multiply lensed quasars imaged with the ESO VLT in the optica…
First stars IX -Mixing in extremely metal-poor giants. Variation of the 12C/13C, [Na/Mg] and [Al/Mg] ratios
M. Spite, R. Cayrel, V. Hill +11
Extremely metal-poor (EMP) stars preserve a fossil record of the composition of the ISM when the Galaxy formed. It is crucial, however, to verify whether internal mixing has modifi…
Supernova 2006aj and the associated X-Ray Flash 060218
J. Sollerman, A. O. Jaunsen, J. P. U. Fynbo +23
We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Fla…
Optical, Infrared, and Ultraviolet Observations of the X-Ray Flash GRB 050416A
S. T. Holland, P. T. Boyd, J. Gorosabel +25
We present ultraviolet, optical, and infrared photometry of the afterglow of the X-ray flash XRF 050416A taken between approximately 100 seconds and 36 days after the burst. We fin…
The unprecedented optical outburst of the quasar 3C 454.3. The WEBT campaign of 2004-2005
M. Villata, C. M. Raiteri, T. J. Balonek
The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. The maximum brightness detected was R = 12.0, which rep…
INTEGRAL observations of the blazar 3C454.3 in outburst
Elena Pian, Luigi Foschini, Volker Beckmann
In Spring 2005, the blazar 3C454.3 underwent a dramatic outburst at all wavelengths from mm to X-rays. This prompted INTEGRAL observations, accomplished in 15-18 May 2005. The sour…