Astronomy & Astrophysics (A&A)

Letters

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20010041

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20010065

Astrophysical processes

Free Access

Spectroscopic confirmation of a cluster of galaxies at 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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000498

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000491

Cosmology (including clusters of galaxies)

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000235

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000465

Free Access

The structure of the Akn 120 emitting region: The line shapes and long-term H_\beta line profile variation p. 780

L. Č. Popović, N. Stanić, A. Kubičela and E. Bon

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000500

Free Access

The luminosity function of field galaxies and its evolution since 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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000466

Free Access

The X-ray view of the quasar MR 2251-178 and its host cluster: Variability, absorption, and intracluster gas emission p. 801

S. Komossa

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20010022

Free Access

The multifrequency emission of Mrk 501 - From radio to TeV gamma-rays p. 809

K. Katarzyński, H. Sol and A. Kus

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000538

Interstellar and circumstellar matter

Free Access

Probing the post-AGB nature of HD 179821 - A new radio study of its circumstellar envelope p. 826

E. Josselin and A. Lèbre

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000496

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000531

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000493

Free Access

Population synthesis of Be/white dwarf binaries in the Galaxy p. 848

N. V. Raguzova

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000348

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000438

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000550

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000490

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000533

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000532

Free Access

Long-term monitoring of active stars - IX. Photometry collected in 1993 p. 910

G. Cutispoto, S. Messina and M. Rodonò

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000549

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20010048

Free Access

Research Note The spectrum of V4334 Sgr (Sakurai's object) in August, 1998 p. 933

Ya. V. Pavlenko and H. W. Duerbeck

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20010067

Stellar structure and evolution

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000539

Stellar atmospheres

Free Access

The planetary system of upsilon Andromedae p. 943

Ing-Guey Jiang and Wing-Huen Ip

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000468

The Sun

Free Access

The ISO-SWS spectrum of planetary nebula NGC 7027 p. 949

J. Bernard Salas, S. R. Pottasch, D. A. Beintema and P. R. Wesselius

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000435

Free Access

A precessing, variable velocity jet model for DG Tauri p. 959

A. Raga, S. Cabrit, C. Dougados and C. Lavalley

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000415

Free Access

The distances of planetary nebulae: A scaling factor based upon radial velocities p. 967

J. P. Phillips

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000439

Free Access

Spectroscopic investigation of old planetaries - V. Distance scales p. 973

R. Napiwotzki

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000431

Free Access

Galactic planetary nebulae with Wolf-Rayet nuclei - II. A consistent observational data set p. 983

M. Peña, G. Stasińska and S. Medina

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000497

Free Access

Absorption against the cosmic 2.7 K background p. 995

S. Chandra and W. H. Kegel

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000499

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000565

Planets and planetary systems

Free Access

High resolution 2D-spectroscopy of granular dynamics p. 1011

J. Hirzberger, M. Koschinsky, F. Kneer and C. Ritter

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000448

Free Access

Filament activity and photospheric magnetic evolution related to flares p. 1022

Y. Jiang and J. Wang

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000551

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000495

Celestial mechanics and astrometry

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20010008

Free Access

Leonid electrophonic bursters p. 1056

M. Beech and L. Foschini

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000436

Atomic, molecular, and nuclear data

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000548

Free Access

IAU resolutions on reference systems and time scales in practice p. 1070

V. A. Brumberg and E. Groten

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000494

Free Access

An analytical representation of the systematic differences HIPPARCOS-FK5 p. 1078

H. Schwan

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000521

Astronomical instrumentation

Free Access

Accretion discs models with the β-viscosity prescription derived from laboratory experiments p. 1087

J.-M. Huré, D. Richard and J.-P. Zahn

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000536

Free Access

Numerical simulations of the accretion-ejection instability in magnetised accretion disks p. 1095

S. E. Caunt and M. Tagger

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000535

Numerical methods and codes

Free Access

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

Published online: 15 March 2001

DOI: https://doi.org/10.1051/0004-6361:20000540

Astronomy & Astrophysics

Volume 367 / No 3 (March I 2001)

Letters

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

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

Astrophysical processes

Spectroscopic confirmation of a cluster of galaxies at in the field of the gravitational lens MG 2016+112 p. 741

HST and ground-based observations of the gravitational lens system Q1009-0252 A & B p. 748

Cosmology (including clusters of galaxies)

Variable stars in nearby galaxies - IV. Fields C and D of IC 1613 p. 759

Rapid polarization variations at 20 cm in 0917+624 p. 770

The structure of the Akn 120 emitting region: The line shapes and long-term H\beta line profile variation p. 780

The luminosity function of field galaxies and its evolution since p. 788

The X-ray view of the quasar MR 2251-178 and its host cluster: Variability, absorption, and intracluster gas emission p. 801

The multifrequency emission of Mrk 501 - From radio to TeV gamma-rays p. 809

Interstellar and circumstellar matter

Probing the post-AGB nature of HD 179821 - A new radio study of its circumstellar envelope p. 826

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

A photometric study of the W UMa-type system U Pegasi p. 840

Population synthesis of Be/white dwarf binaries in the Galaxy p. 848

Elemental abundance studies of CP stars - III. The magnetic CP stars α Scl and HD 170973 p. 859

Speckle observations of binary systems measured by Hipparcos p. 865

The angular diameter and distance of the Cepheid ζ Geminorum p. 876

Comparison of the Hα circumstellar disks in Be/X-ray binaries and Be stars p. 884

Extended optical spectroscopic monitoring of wind structure in HD 152408 p. 891

Long-term monitoring of active stars - IX. Photometry collected in 1993 p. 910

Research Note PSR B1929+10 and GSC 01060-01374 are not binary companions p. 931

Research Note The spectrum of V4334 Sgr (Sakurai's object) in August, 1998 p. 933

Stellar structure and evolution

The core-wing anomaly of cool Ap stars - Abnormal Balmer Profiles p. 939

Stellar atmospheres

The planetary system of upsilon Andromedae p. 943

The Sun

The ISO-SWS spectrum of planetary nebula NGC 7027 p. 949

A precessing, variable velocity jet model for DG Tauri p. 959

The distances of planetary nebulae: A scaling factor based upon radial velocities p. 967

Spectroscopic investigation of old planetaries - V. Distance scales p. 973

Galactic planetary nebulae with Wolf-Rayet nuclei - II. A consistent observational data set p. 983

Absorption against the cosmic 2.7 K background p. 995

Self-similar evolution of wind-blown bubbles with mass-loading by conductive evaporation p. 1000

Planets and planetary systems

High resolution 2D-spectroscopy of granular dynamics p. 1011

Filament activity and photospheric magnetic evolution related to flares p. 1022

Influence of magnetic fields on the coherence effects in the Nai D1 and D2 lines p. 1033

Celestial mechanics and astrometry

A catalogue of emission lines in spectra of Comet C/1995 O1 (Hale-Bopp) p. 1049

Leonid electrophonic bursters p. 1056

Atomic, molecular, and nuclear data

An analysis of satellite calibration methods for CCD astrometry of Saturn's satellites p. 1061

IAU resolutions on reference systems and time scales in practice p. 1070

An analytical representation of the systematic differences HIPPARCOS-FK5 p. 1078

Astronomical instrumentation

Accretion discs models with the β-viscosity prescription derived from laboratory experiments p. 1087

Numerical simulations of the accretion-ejection instability in magnetised accretion disks p. 1095

Numerical methods and codes

A new digital spectrograph for observations of radio burst emission from the Sun p. 1112

The structure of the Akn 120 emitting region: The line shapes and long-term H_\beta line profile variation p. 780

Influence of magnetic fields on the coherence effects in the Nai D₁ and D₂ lines p. 1033