Deep VLT spectroscopy of the 2.49 radio galaxy MRC 2104-242 - Evidence for a metallicity gradient in its extended emission line region     p. L5 R. A. Overzier, H. J. A. Röttgering, J. D. Kurk, and C. De Breuck DOI: http://dx.doi.org/10.1051/0004-6361:20010041 Abstract | Full HTML | PDF (194 KB) | PS (262 KB) | References | SIMBAD record

The PAH 7.7 μm/850 μm ratio as new diagnostics for high extinction in ULIRGs -increasing evidence for a hidden quasar in Arp 220     p. L9 M. Haas, U. Klaas, S. A. H. Müller, R. Chini, and I. Coulson DOI: http://dx.doi.org/10.1051/0004-6361:20010065 Abstract | Full HTML | PDF (137 KB) | PS (276 KB) | References | SIMBAD record | NASA ADS Abstract Service

Spectroscopic confirmation of a cluster of galaxies at z=1 in the field of the gravitational lens MG 2016+112     p. 741 G. Soucail, J.-P. Kneib, A. O. Jaunsen, J. Hjorth, M. Hattori, and T. Yamada DOI: http://dx.doi.org/10.1051/0004-6361:20000498 Abstract | Full HTML | PDF (447 KB) | PS (484 KB) | References | SIMBAD record | NASA ADS Abstract Service

HST and ground-based observations of the gravitational lens system Q1009-0252 A & B     p. 748 J.-F. Claeskens, S. V. Khmil, Dong Wook Lee, D. Sluse, and J. Surdej DOI: http://dx.doi.org/10.1051/0004-6361:20000491 Abstract | Full HTML | PDF (299 KB) | PS (259 KB) | References | SIMBAD record | NASA ADS Abstract Service

Variable stars in nearby galaxies - IV. Fields C and D of IC 1613     p. 759 L. Mantegazza, E. Antonello, D. Fugazza, M. Bossi, and S. Covino DOI: http://dx.doi.org/10.1051/0004-6361:20000235 Abstract | Full HTML | PDF (1.05 MB) | PS (835 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Rapid polarization variations at 20 cm in 0917+624     p. 770 S. J. Qian, A. Witzel, A. Kraus, T. P. Krichbaum, and J. A. Zensus DOI: http://dx.doi.org/10.1051/0004-6361:20000465 Abstract | Full HTML | PDF (247 KB) | PS (242 KB) | References | SIMBAD record | NASA ADS Abstract Service

The structure of the Akn 120 emitting region: The line shapes and long-term Hβ line profile variation     p. 780 L. Č. Popović, N. Stanić, A. Kubičela, and E. Bon DOI: http://dx.doi.org/10.1051/0004-6361:20000500 Abstract | Full HTML | PDF (273 KB) | PS (178 KB) | References | SIMBAD record | NASA ADS Abstract Service

The luminosity function of field galaxies and its evolution since z=1     p. 788 J. W. Fried et al. DOI: http://dx.doi.org/10.1051/0004-6361:20000466 Abstract | Full HTML | PDF (537 KB) | PS (367 KB) | References | SIMBAD record | NASA ADS Abstract Service

The X-ray view of the quasar MR 2251-178 and its host cluster: Variability, absorption, and intracluster gas emission     p. 801 S. Komossa DOI: http://dx.doi.org/10.1051/0004-6361:20010022 Abstract | Full HTML | PDF (238 KB) | PS (330 KB) | References | SIMBAD record | NASA ADS Abstract Service

The multifrequency emission of Mrk 501 - From radio to TeV gamma-rays     p. 809 K. Katarzyński, H. Sol, and A. Kus DOI: http://dx.doi.org/10.1051/0004-6361:20000538 Abstract | Full HTML | PDF (371 KB) | PS (267 KB) | References | SIMBAD record | NASA ADS Abstract Service

Probing the post-AGB nature of HD 179821 - A new radio study of its circumstellar envelope     p. 826 E. Josselin, and A. Lèbre DOI: http://dx.doi.org/10.1051/0004-6361:20000496 Abstract | Full HTML | PDF (135 KB) | PS (139 KB) | References | SIMBAD record | NASA ADS Abstract Service

Spectroscopic investigations of classical Cepheids and main-sequence stars in galactic open clusters and associations - I. Association Cas OB2 and the small-amplitude Cepheid SU Cassiopeae     p. 831 I. A. Usenko, V. V. Kovtyukh, V. G. Klochkova, V. E. Panchuk, and S. V. Yermakov DOI: http://dx.doi.org/10.1051/0004-6361:20000531 Abstract | Full HTML | PDF (294 KB) | PS (282 KB) | References | SIMBAD record | NASA ADS Abstract Service

A photometric study of the W UMa-type system U Pegasi     p. 840 G. Djurašević, H. Rovithis-Livaniou, P. Rovithis, S. Erkapić, and N. Milovanović DOI: http://dx.doi.org/10.1051/0004-6361:20000493 Abstract | Full HTML | PDF (1.22 MB) | PS (2.96 MB) | References | SIMBAD record | NASA ADS Abstract Service

Population synthesis of Be/white dwarf binaries in the Galaxy     p. 848 N. V. Raguzova DOI: http://dx.doi.org/10.1051/0004-6361:20000348 Abstract | Full HTML | PDF (307 KB) | PS (349 KB) | References | SIMBAD record | NASA ADS Abstract Service

Elemental abundance studies of CP stars - III. The magnetic CP stars α Scl and HD 170973     p. 859 Z. López-García, Saul J. Adelman, and O. I. Pintado DOI: http://dx.doi.org/10.1051/0004-6361:20000438 Abstract | Full HTML | PDF (99.6 KB) | PS (105 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Speckle observations of binary systems measured by Hipparcos     p. 865 J.-L. Prieur, E. Oblak, P. Lampens, M. Kurpinska-Winiarska, E. Aristidi, L. Koechlin, and G. Ruymaekers DOI: http://dx.doi.org/10.1051/0004-6361:20000550 Abstract | Full HTML | PDF (183 KB) | PS (278 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

The angular diameter and distance of the Cepheid ζ Geminorum     p. 876 P. Kervella, V. Coudé du Foresto, G. Perrin, M. Schöller, W. A. Traub, and M. G. Lacasse DOI: http://dx.doi.org/10.1051/0004-6361:20000490 Abstract | Full HTML | PDF (183 KB) | PS (170 KB) | References | SIMBAD record | NASA ADS Abstract Service

Comparison of the Hα circumstellar disks in Be/X-ray binaries and Be stars     p. 884 R. K. Zamanov, P. Reig, J. Martí, M. J. Coe, J. Fabregat, N. A. Tomov, and T. Valchev DOI: http://dx.doi.org/10.1051/0004-6361:20000533 Abstract | Full HTML | PDF (189 KB) | PS (135 KB) | References | SIMBAD record | NASA ADS Abstract Service

Extended optical spectroscopic monitoring of wind structure in HD 152408     p. 891 R. K. Prinja, O. Stahl, A. Kaufer, S. R. Colley, P. A. Crowther, and B. Wolf DOI: http://dx.doi.org/10.1051/0004-6361:20000532 Abstract | Full HTML | PDF (2.81 MB) | PS (4.76 MB) | References | SIMBAD record | NASA ADS Abstract Service

Long-term monitoring of active stars - IX. Photometry collected in 1993     p. 910 G. Cutispoto, S. Messina, and M. Rodonò DOI: http://dx.doi.org/10.1051/0004-6361:20000549 Abstract | Full HTML | PDF (511 KB) | PS (377 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Research Note PSR B1929+10 and GSC 01060-01374 are not binary companions     p. 931 M. L. A. Kouwenhoven, and M. C. van den Berg DOI: http://dx.doi.org/10.1051/0004-6361:20010048 Abstract | Full HTML | PDF (115 KB) | PS (99.9 KB) | References | SIMBAD record | NASA ADS Abstract Service

Research Note The spectrum of V4334 Sgr (Sakurai's object) in August, 1998     p. 933 Ya. V. Pavlenko, and H. W. Duerbeck DOI: http://dx.doi.org/10.1051/0004-6361:20010067 Abstract | Full HTML | PDF (368 KB) | PS (457 KB) | References | SIMBAD record | NASA ADS Abstract Service

The core-wing anomaly of cool Ap stars - Abnormal Balmer Profiles     p. 939 C. R. Cowley, S. Hubrig, T. A. Ryabchikova, G. Mathys, N. Piskunov, and P. Mittermayer DOI: http://dx.doi.org/10.1051/0004-6361:20000539 Abstract | Full HTML | PDF (220 KB) | PS (477 KB) | References | SIMBAD record | NASA ADS Abstract Service

The planetary system of upsilon Andromedae     p. 943 Ing-Guey Jiang, and Wing-Huen Ip DOI: http://dx.doi.org/10.1051/0004-6361:20000468 Abstract | Full HTML | PDF (399 KB) | PS (286 KB) | References | SIMBAD record | NASA ADS Abstract Service

The ISO-SWS spectrum of planetary nebula NGC 7027     p. 949 J. Bernard Salas, S. R. Pottasch, D. A. Beintema, and P. R. Wesselius DOI: http://dx.doi.org/10.1051/0004-6361:20000435 Abstract | Full HTML | PDF (213 KB) | PS (183 KB) | References | SIMBAD record | NASA ADS Abstract Service

A precessing, variable velocity jet model for DG Tauri     p. 959 A. Raga, S. Cabrit, C. Dougados, and C. Lavalley DOI: http://dx.doi.org/10.1051/0004-6361:20000415 Abstract | Full HTML | PDF (505 KB) | PS (422 KB) | References | SIMBAD record | NASA ADS Abstract Service

The distances of planetary nebulae: A scaling factor based upon radial velocities     p. 967 J. P. Phillips DOI: http://dx.doi.org/10.1051/0004-6361:20000439 Abstract | Full HTML | PDF (240 KB) | PS (1.39 MB) | References | SIMBAD record | NASA ADS Abstract Service

Spectroscopic investigation of old planetaries - V. Distance scales     p. 973 R. Napiwotzki DOI: http://dx.doi.org/10.1051/0004-6361:20000431 Abstract | Full HTML | PDF (221 KB) | PS (203 KB) | References | SIMBAD record | NASA ADS Abstract Service

Galactic planetary nebulae with Wolf-Rayet nuclei - II. A consistent observational data set     p. 983 M. Peña, G. Stasińska, and S. Medina DOI: http://dx.doi.org/10.1051/0004-6361:20000497 Abstract | Full HTML | PDF (215 KB) | PS (156 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Absorption against the cosmic 2.7 K background     p. 995 S. Chandra, and W. H. Kegel DOI: http://dx.doi.org/10.1051/0004-6361:20000499 Abstract | Full HTML | PDF (242 KB) | PS (282 KB) | References | SIMBAD record | NASA ADS Abstract Service

Self-similar evolution of wind-blown bubbles with mass-loading by conductive evaporation     p. 1000 J. M. Pittard, J. E. Dyson, and T. W. Hartquist DOI: http://dx.doi.org/10.1051/0004-6361:20000565 Abstract | Full HTML | PDF (444 KB) | PS (217 KB) | References | SIMBAD record | NASA ADS Abstract Service

High resolution 2D-spectroscopy of granular dynamics     p. 1011 J. Hirzberger, M. Koschinsky, F. Kneer, and C. Ritter DOI: http://dx.doi.org/10.1051/0004-6361:20000448 Abstract | Full HTML | PDF (1.73 MB) | PS (28.6 MB) | References | SIMBAD record | NASA ADS Abstract Service

Filament activity and photospheric magnetic evolution related to flares     p. 1022 Y. Jiang, and J. Wang DOI: http://dx.doi.org/10.1051/0004-6361:20000551 Abstract | Full HTML | PDF (552 KB) | PS (4.95 MB) | References | SIMBAD record | NASA ADS Abstract Service

Influence of magnetic fields on the coherence effects in the Nai D1 and D2 lines     p. 1033 J. O. Stenflo, A. Gandorfer, T. Wenzler, and C. U. Keller DOI: http://dx.doi.org/10.1051/0004-6361:20000495 Abstract | Full HTML | PDF (912 KB) | PS (2.67 MB) | References | SIMBAD record | NASA ADS Abstract Service

A catalogue of emission lines in spectra of Comet C/1995 O1 (Hale-Bopp)     p. 1049 H. W. Zhang, G. Zhao, and J. Y. Hu DOI: http://dx.doi.org/10.1051/0004-6361:20010008 Abstract | Full HTML | PDF (167 KB) | PS (141 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Leonid electrophonic bursters     p. 1056 M. Beech, and L. Foschini DOI: http://dx.doi.org/10.1051/0004-6361:20000436 Abstract | Full HTML | PDF (97.1 KB) | PS (102 KB) | References | SIMBAD record | NASA ADS Abstract Service

An analysis of satellite calibration methods for CCD astrometry of Saturn's satellites     p. 1061 K. X. Shen, G. Dourneau, R. C. Qiao, and J. R. Liu DOI: http://dx.doi.org/10.1051/0004-6361:20000548 Abstract | Full HTML | PDF (199 KB) | PS (154 KB) | References | SIMBAD record | NASA ADS Abstract Service

IAU resolutions on reference systems and time scales in practice     p. 1070 V. A. Brumberg, and E. Groten DOI: http://dx.doi.org/10.1051/0004-6361:20000494 Abstract | Full HTML | PDF (131 KB) | PS (123 KB) | References | SIMBAD record | NASA ADS Abstract Service

An analytical representation of the systematic differences HIPPARCOS-FK5     p. 1078 H. Schwan DOI: http://dx.doi.org/10.1051/0004-6361:20000521 Abstract | Full HTML | PDF (315 KB) | PS (427 KB) | References | SIMBAD record | NASA ADS Abstract Service

Accretion discs models with the β-viscosity prescription derived from laboratory experiments     p. 1087 J.-M. Huré, D. Richard, and J.-P. Zahn DOI: http://dx.doi.org/10.1051/0004-6361:20000536 Abstract | Full HTML | PDF (220 KB) | PS (197 KB) | References | SIMBAD record | NASA ADS Abstract Service

Numerical simulations of the accretion-ejection instability in magnetised accretion disks     p. 1095 S. E. Caunt, and M. Tagger DOI: http://dx.doi.org/10.1051/0004-6361:20000535 Abstract | Full HTML | PDF (2.20 MB) | PS (2.97 MB) | References | SIMBAD record | NASA ADS Abstract Service

A new digital spectrograph for observations of radio burst emission from the Sun     p. 1112 E. Ebenezer, R. Ramesh, K. R. Subramanian, M. S. SundaraRajan, and Ch. V. Sastry DOI: http://dx.doi.org/10.1051/0004-6361:20000540 Abstract | Full HTML | PDF (266 KB) | PS (615 KB) | References | SIMBAD record | NASA ADS Abstract Service