Astronomy & Astrophysics (A&A)

Letters

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A historic jet-emission minimum reveals hidden spectral features in 3C 273 p. L1

M. Türler, M. Chernyakova, T. J.-L. Courvoisier, C. Foellmi, M. F. Aller, H. D. Aller, A. Kraus, T. P. Krichbaum, A. Lähteenmäki, A. Marscher et al. (7 more)

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:200600023

Astrophysical processes

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Cannonballs in the context of gamma ray bursts - Formation sites? p. 1

J. E. Staff, C. Fendt and R. Ouyed

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054342

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Gamma-ray absorption in massive X-ray binaries p. 9

G. Dubus

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054233

Cosmology (including clusters of galaxies)

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The most metal-poor damped Lyman system at z : constraints on early nucleosynthesis p. 19

P. Erni, P. Richter, C. Ledoux and P. Petitjean

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054328

Extragalactic astronomy

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Multi-wavelength analysis of the field of the dark burst GRB 031220 p. 27

A. Melandri, B. Gendre, L. A. Antonelli, A. Grazian, A. de Ugarte Postigo, J. Gorosabel, L. Piro, G. Kosugi, N. Kawai, M. de Pasquale and G. P. Garmire

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053641

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The Chandra view of the 3C/FR I sample of low luminosity radio-galaxies p. 35

B. Balmaverde, A. Capetti and P. Grandi

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053799

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Variation of the fine-structure constant: very high resolution spectrum of QSO HE 0515-4414 p. 45

H. Chand, R. Srianand, P. Petitjean, B. Aracil, R. Quast and D. Reimers

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054584

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Mid infrared properties of distant infrared luminous galaxies p. 57

D. Marcillac, D. Elbaz, R. R. Chary, M. Dickinson, F. Galliano and G. Morrison

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054035

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A radio census of nuclear activity in nearby galaxies p. 71

M. E. Filho, P. D. Barthel and L. C. Ho

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054510

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High frequency VLBI observations of the scatter-broadened quasar B 2005+403 p. 85

K. É. Gabányi, T. P. Krichbaum, S. Britzen, U. Bach, E. Ros, A. Witzel and J. A. Zensus

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054017

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Photometric survey of the polar ring galaxy NGC 6822 p. 99

P. Battinelli, S. Demers and W. E. Kunkel

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054718

Galactic structure, stellar clusters, and populations

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Dynamical stability of collisionless stellar systems and barotropic stars: the nonlinear Antonov first law p. 109

P. H. Chavanis

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054008

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Kinematics and stellar content of the Milky Way populations toward the North Galactic Pole p. 125

A. Vallenari, S. Pasetto, G. Bertelli, C. Chiosi, A. Spagna and M. Lattanzi

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054712

Interstellar and circumstellar matter

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A dynamical model for the dusty ring in the Coalsack p. 141

P. Hennebelle, A. P. Whitworth and S. P. Goodwin

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054634

Stellar structure and evolution

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DQ white-dwarf stars with low C abundance: possible progenitors p. 147

C. G. Scóccola, L. G. Althaus, A. M. Serenelli, R. D. Rohrmann and A. H. Córsico

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053769

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The nature of ultraviolet spectra of AG Pegasi and other symbiotic stars: locations, origins, and excitation mechanisms of emission lines p. 157

M. Eriksson, S. Johansson and G. M. Wahlgren

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053396

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Multiplicity of very low-mass objects in the Upper Scorpius OB association: a possible wide binary population p. 177

H. Bouy, E. L. Martín, W. Brandner, M. R. Zapatero-Osorio, V. J. S. Béjar, M. Schirmer, N. Huélamo and A. M. Ghez

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054252

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INTEGRAL observation of the high-mass X-ray transient V 0332+53 during the 2005 outburst decline p. 187

N. Mowlavi, I. Kreykenbohm, S. E. Shaw, K. Pottschmidt, J. Wilms, J. Rodriguez, N. Produit, S. Soldi, S. Larsson and P. Dubath

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054235

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The magnetic field and confined wind of the O star Orionis C p. 195

G. A. Wade, A. W. Fullerton, J.-F. Donati, J. D. Landstreet, P. Petit and S. Strasser

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054380

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C+O detonations in thermonuclear supernovae: interaction with previously burned material p. 207

A. Maier and J. C. Niemeyer

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054094

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Protoneutron stars within the Brueckner-Bethe-Goldstone theory p. 213

O. E. Nicotra, M. Baldo, G. F. Burgio and H.-J. Schulze

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053670

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Eruptions of the V838 Mon type: stellar merger versus nuclear outburst models p. 223

R. Tylenda and N. Soker

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054201

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The second-order asymptotic representation of higher-order non-radial p-modes in stars revisited p. 237

P. Smeyers

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054546

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Radio observations and spectrum of the SNR G127.1+0.5 and its central source 0125+628 p. 251

D. Leahy and W. Tian

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054661

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Spectral energy distribution of the γ-ray microquasar LS 5039 p. 259

J. M. Paredes, V. Bosch-Ramon and G. E. Romero

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054155

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Study of the cyclotron feature in MXB 0656-072 p. 267

V. A. McBride, J. Wilms, M. J. Coe, I. Kreykenbohm, R. E. Rothschild, W. Coburn, J. L. Galache, P. Kretschmar, W. R. T. Edge and R. Staubert

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054239

Stellar atmospheres

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A 3D radiative transfer framework - I. Non-local operator splitting and continuum scattering problems p. 273

P. H. Hauschildt and E. Baron

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053846

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Abundance analysis of 5 early-type stars in the young open cluster IC 2391 p. 285

Ch. Stütz, S. Bagnulo, E. Jehin, C. Ledoux, R. Cabanac, C. Melo and J. V. Smoker

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053905

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A search for magnetic fields in the variable HgMn star α Andromedae p. 293

G. A. Wade, M. Aurière, S. Bagnulo, J.-F. Donati, N. Johnson, J. D. Landstreet, F. Lignières, S. Marsden, D. Monin, D. Mouillet et al. (5 more)

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054502

The Sun

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Moving magnetic tubes: fragmentation, vortex streets and the limit of the approximation of thin flux tubes p. 303

M. C. M. Cheung, F. Moreno-Insertis and M. Schüssler

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054499

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Evolution of magnetic fields and energetics of flares in active region 8210 p. 319

S. Régnier and R. C. Canfield

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054171

Planets and planetary systems

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Spectroscopy of near-Earth asteroids p. 331

R. Michelsen, A. Nathues and C.-I. Lagerkvist

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20040443

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The 2005 Draconid outburst p. 339

M. Campbell-Brown, J. Vaubaillon, P. Brown, R. J. Weryk and R. Arlt

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054588

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The HARPS search for southern extra-solar planets - VII. A very hot Jupiter orbiting HD 212301 p. 345

G. Lo Curto, M. Mayor, J. V. Clausen, W. Benz, F. Bouchy, C. Lovis, C. Moutou, D. Naef, F. Pepe, D. Queloz et al. (9 more)

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054083

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The origins of the substellar companion to GQ Lupi p. 351

J. H. Debes and S. Sigurdsson

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20064803

Atomic, molecular, and nuclear data

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Infrared reflection spectra of forsterite crystal p. 357

H. Sogawa, C. Koike, H. Chihara, H. Suto, S. Tachibana, A. Tsuchiyama and T. Kozasa

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20041538

Instruments, observational techniques, and data processing

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Removal of central obscuration and spider arm effects with beam-shaping coronagraphy p. 363

L. Abe, N. Murakami, J. Nishikawa and M. Tamura

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20053989

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Accurate photometry of extended spherically symmetric sources p. 375

P. Anders, M. Gieles and R. de Grijs

Published online: 25 April 2006

DOI: https://doi.org/10.1051/0004-6361:20054175

Astronomy & Astrophysics

Volume 451 / No 1 (May III 2006)

Letters

A historic jet-emission minimum reveals hidden spectral features in 3C 273 p. L1

Astrophysical processes

Cannonballs in the context of gamma ray bursts - Formation sites? p. 1

Gamma-ray absorption in massive X-ray binaries p. 9

Cosmology (including clusters of galaxies)

The most metal-poor damped Lyman system at z : constraints on early nucleosynthesis p. 19

Extragalactic astronomy

Multi-wavelength analysis of the field of the dark burst GRB 031220 p. 27

The Chandra view of the 3C/FR I sample of low luminosity radio-galaxies p. 35

Variation of the fine-structure constant: very high resolution spectrum of QSO HE 0515-4414 p. 45

Mid infrared properties of distant infrared luminous galaxies p. 57

A radio census of nuclear activity in nearby galaxies p. 71

High frequency VLBI observations of the scatter-broadened quasar B 2005+403 p. 85

Photometric survey of the polar ring galaxy NGC 6822 p. 99

Galactic structure, stellar clusters, and populations

Dynamical stability of collisionless stellar systems and barotropic stars: the nonlinear Antonov first law p. 109

Kinematics and stellar content of the Milky Way populations toward the North Galactic Pole p. 125

Interstellar and circumstellar matter

A dynamical model for the dusty ring in the Coalsack p. 141

Stellar structure and evolution

DQ white-dwarf stars with low C abundance: possible progenitors p. 147

The nature of ultraviolet spectra of AG Pegasi and other symbiotic stars: locations, origins, and excitation mechanisms of emission lines p. 157

Multiplicity of very low-mass objects in the Upper Scorpius OB association: a possible wide binary population p. 177

INTEGRAL observation of the high-mass X-ray transient V 0332+53 during the 2005 outburst decline p. 187

The magnetic field and confined wind of the O star Orionis C p. 195

C+O detonations in thermonuclear supernovae: interaction with previously burned material p. 207

Protoneutron stars within the Brueckner-Bethe-Goldstone theory p. 213

Eruptions of the V838 Mon type: stellar merger versus nuclear outburst models p. 223

The second-order asymptotic representation of higher-order non-radial p-modes in stars revisited p. 237

Radio observations and spectrum of the SNR G127.1+0.5 and its central source 0125+628 p. 251

Spectral energy distribution of the γ-ray microquasar LS 5039 p. 259

Study of the cyclotron feature in MXB 0656-072 p. 267

Stellar atmospheres

A 3D radiative transfer framework - I. Non-local operator splitting and continuum scattering problems p. 273

Abundance analysis of 5 early-type stars in the young open cluster IC 2391 p. 285

A search for magnetic fields in the variable HgMn star α Andromedae p. 293

The Sun

Moving magnetic tubes: fragmentation, vortex streets and the limit of the approximation of thin flux tubes p. 303

Evolution of magnetic fields and energetics of flares in active region 8210 p. 319

Planets and planetary systems

Spectroscopy of near-Earth asteroids p. 331

The 2005 Draconid outburst p. 339

The HARPS search for southern extra-solar planets - VII. A very hot Jupiter orbiting HD 212301 p. 345

The origins of the substellar companion to GQ Lupi p. 351

Atomic, molecular, and nuclear data

Infrared reflection spectra of forsterite crystal p. 357

Instruments, observational techniques, and data processing

Removal of central obscuration and spider arm effects with beam-shaping coronagraphy p. 363

Accurate photometry of extended spherically symmetric sources p. 375