Astronomy & Astrophysics

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A&A Vol. 367 No. 3

	Astronomy and Astrophysics
	Vol. 367 No. 3 (March I 2001)
Cover illustration: 3D simulation of a precessing pulsed jet in DG Tau (Raga, A., et al., p.962)

Letters

Deep VLT spectroscopy of the $\vec{z}=$ 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
Abstract | References | Full HTML | PDF file (199 KB) | PS file (269 KB)

The PAH 7.7 $\mu$ m/850 $\mu$ m 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
Abstract | References | Full HTML | PDF file (141 KB) | PS file (283 KB)

Cosmology

Spectroscopic confirmation of a cluster of galaxies at $\vec{z=1}$ 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
Abstract | References | Full HTML | PDF file (457 KB) | PS file (496 KB)

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
Abstract | References | Full HTML | PDF file (306 KB) | PS file (265 KB)

Extragalactic astronomy

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
Abstract | References | Full HTML | PDF file (1.10 MB) | PS file (855 KB)

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
Abstract | References | Full HTML | PDF file (253 KB) | PS file (247 KB)

The structure of the Akn 120 emitting region: The line shapes and long-term H $\mathsf{_\beta}$ line profile variation p. 780
L. C. Popovic, N. Stanic, A. Kubicela and E. Bon
Abstract | References | Full HTML | PDF file (279 KB) | PS file (182 KB)

The luminosity function of field galaxies and its evolution since $\vec{z=1}$ p. 788
J. W. Fried, B. von Kuhlmann, K. Meisenheimer, H.-W. Rix, C. Wolf, H. H. Hippelein, M. Kümmel, S. Phleps, H. J. Röser, I. Thierring and C. Maier
Abstract | References | Full HTML | PDF file (550 KB) | PS file (376 KB)

The X-ray view of the quasar MR 2251-178 and its host cluster: Variability, absorption, and intracluster gas emission p. 801
S. Komossa
Abstract | References | Full HTML | PDF file (243 KB) | PS file (338 KB)

The multifrequency emission of Mrk 501 - From radio to TeV gamma-rays p. 809
K. Katarzynski, H. Sol and A. Kus
Abstract | References | Full HTML | PDF file (380 KB) | PS file (274 KB)

Formation, structure and evolution of stars

Probing the post-AGB nature of HD 179821 - A new radio study of its circumstellar envelope p. 826
E. Josselin and A. Lèbre
Abstract | References | Full HTML | PDF file (138 KB) | PS file (143 KB)

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
Abstract | References | Full HTML | PDF file (301 KB) | PS file (289 KB)

A photometric study of the W UMa-type system U Pegasi p. 840
G. Djurasevic, H. Rovithis-Livaniou, P. Rovithis, S. Erkapic and N. Milovanovic
Abstract | References | Full HTML | PDF file (1.28 MB) | PS file (3.11 MB)

Population synthesis of Be/white dwarf binaries in the Galaxy p. 848
N. V. Raguzova
Abstract | References | Full HTML | PDF file (315 KB) | PS file (357 KB)

Elemental abundance studies of CP stars - III. The magnetic CP stars $\alpha$ Scl and HD 170973 p. 859
Z. López-García, Saul J. Adelman and O. I. Pintado
Abstract | References | Full HTML | PDF file (102 KB) | PS file (108 KB)

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
Abstract | References | Full HTML | PDF file (188 KB) | PS file (285 KB)

The angular diameter and distance of the Cepheid $\zeta$ Geminorum p. 876
P. Kervella, V. Coudé du Foresto, G. Perrin, M. Schöller, W. A. Traub and M. G. Lacasse
Abstract | References | Full HTML | PDF file (187 KB) | PS file (174 KB)

Comparison of the H $\alpha$ 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
Abstract | References | Full HTML | PDF file (194 KB) | PS file (138 KB)

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
Abstract | References | Full HTML | PDF file (2.95 MB) | PS file (4.99 MB)

Long-term monitoring of active stars - IX. Photometry collected in 1993 p. 910
G. Cutispoto, S. Messina and M. Rodonò
Abstract | References | Full HTML | PDF file (524 KB) | PS file (386 KB)

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
Abstract | References | Full HTML | PDF file (118 KB) | PS file (102 KB)

Research Note The spectrum of V4334 Sgr (Sakurai's object) in August, 1998 p. 933
Ya. V. Pavlenko and H. W. Duerbeck
Abstract | References | Full HTML | PDF file (377 KB) | PS file (468 KB)

Stellar atmospheres

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
Abstract | References | Full HTML | PDF file (225 KB) | PS file (489 KB)

Formation and evolution of planetary systems

The planetary system of upsilon Andromedae p. 943
Ing-Guey Jiang and Wing-Huen Ip
Abstract | References | Full HTML | PDF file (408 KB) | PS file (293 KB)

Diffuse matter in space

The ISO-SWS spectrum of planetary nebula NGC 7027 p. 949
J. Bernard Salas, S. R. Pottasch, D. A. Beintema and P. R. Wesselius
Abstract | References | Full HTML | PDF file (218 KB) | PS file (187 KB)

A precessing, variable velocity jet model for DG Tauri p. 959
A. Raga, S. Cabrit, C. Dougados and C. Lavalley
Abstract | References | Full HTML | PDF file (517 KB) | PS file (432 KB)

The distances of planetary nebulae: A scaling factor based upon radial velocities p. 967
J. P. Phillips
Abstract | References | Full HTML | PDF file (246 KB) | PS file (1.46 MB)

Spectroscopic investigation of old planetaries - V. Distance scales p. 973
R. Napiwotzki
Abstract | References | Full HTML | PDF file (227 KB) | PS file (208 KB)

Galactic planetary nebulae with Wolf-Rayet nuclei - II. A consistent observational data set p. 983
M. Peña, G. Stasinska and S. Medina
Abstract | References | Full HTML | PDF file (220 KB) | PS file (160 KB)

Absorption against the cosmic 2.7 K background p. 995
S. Chandra and W. H. Kegel
Abstract | References | Full HTML | PDF file (247 KB) | PS file (289 KB)

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
Abstract | References | Full HTML | PDF file (455 KB) | PS file (223 KB)

The sun

High resolution 2D-spectroscopy of granular dynamics p. 1011
J. Hirzberger, M. Koschinsky, F. Kneer and C. Ritter
Abstract | References | Full HTML | PDF file (1.82 MB) | PS file (30.0 MB)

Filament activity and photospheric magnetic evolution related to flares p. 1022
Y. Jiang and J. Wang
Abstract | References | Full HTML | PDF file (565 KB) | PS file (5.20 MB)

Influence of magnetic fields on the coherence effects in the NaI D $\mathsf$ and D $\mathsf$ lines p. 1033
J. O. Stenflo, A. Gandorfer, T. Wenzler and C. U. Keller
Abstract | References | Full HTML | PDF file (934 KB) | PS file (2.80 MB)

The solar system

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
Abstract | References | Full HTML | PDF file (171 KB) | PS file (144 KB)

Leonid electrophonic bursters p. 1056
M. Beech and L. Foschini
Abstract | References | Full HTML | PDF file (99.4 KB) | PS file (104 KB)

Celestial mechanics and astrometry

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
Abstract | References | Full HTML | PDF file (204 KB) | PS file (157 KB)

IAU resolutions on reference systems and time scales in practice p. 1070
V. A. Brumberg and E. Groten
Abstract | References | Full HTML | PDF file (134 KB) | PS file (126 KB)

An analytical representation of the systematic differences HIPPARCOS-FK5 p. 1078
H. Schwan
Abstract | References | Full HTML | PDF file (323 KB) | PS file (437 KB)

Physical and chemical processes

Accretion discs models with the $\beta$ -viscosity prescription derived from laboratory experiments p. 1087
J.-M. Huré, D. Richard and J.-P. Zahn
Abstract | References | Full HTML | PDF file (225 KB) | PS file (202 KB)

Numerical simulations of the accretion-ejection instability in magnetised accretion disks p. 1095
S. E. Caunt and M. Tagger
Abstract | References | Full HTML | PDF file (2.31 MB) | PS file (3.12 MB)

Instruments, observational techniques and data processing

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
Abstract | References | Full HTML | PDF file (273 KB) | PS file (630 KB)

Astronomy and Astrophysics