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Astronomy and Astrophysics

Vol. 451, No. 1 (May III 2006)

Spectroscopic variations of the magnetic O star θ1 Ori C (Wade, G.A., et al., p. 201)
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-  Letters
A historic jet-emission minimum reveals hidden spectral features in 3C 273     p. L1
M. Türler et al.
DOI: http://dx.doi.org/10.1051/0004-6361:200600023
Abstract | Full HTML | PDF (227 KB) | PS (1.05 MB) | References | SIMBAD record | NASA ADS Abstract Service


-  Astrophysical processes
Cannonballs in the context of gamma ray bursts - Formation sites?     p. 1
J. E. Staff, C. Fendt, and R. Ouyed
DOI: http://dx.doi.org/10.1051/0004-6361:20054342
Abstract | Full HTML | PDF (930 KB) | PS (3.64 MB) | References | Online Material | NASA ADS Abstract Service

Gamma-ray absorption in massive X-ray binaries     p. 9
G. Dubus
DOI: http://dx.doi.org/10.1051/0004-6361:20054233
Abstract | Full HTML | PDF (324 KB) | PS (155 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Cosmology (including clusters of galaxies)
The most metal-poor damped Lyman α system at z : constraints on early nucleosynthesis     p. 19
P. Erni, P. Richter, C. Ledoux, and P. Petitjean
DOI: http://dx.doi.org/10.1051/0004-6361:20054328
Abstract | Full HTML | PDF (240 KB) | PS (97.5 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Extragalactic astronomy
Multi-wavelength analysis of the field of the dark burst GRB 031220     p. 27
A. Melandri et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20053641
Abstract | Full HTML | PDF (306 KB) | PS (215 KB) | References | SIMBAD record | NASA ADS Abstract Service

The Chandra view of the 3C/FR I sample of low luminosity radio-galaxies     p. 35
B. Balmaverde, A. Capetti, and P. Grandi
DOI: http://dx.doi.org/10.1051/0004-6361:20053799
Abstract | Full HTML | PDF (498 KB) | PS (123 KB) | References | SIMBAD record | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20054584
Abstract | Full HTML | PDF (1.15 MB) | PS (479 KB) | References | SIMBAD record | NASA ADS Abstract Service

Mid infrared properties of distant infrared luminous galaxies     p. 57
D. Marcillac, D. Elbaz, R. R. Chary, M. Dickinson, F. Galliano, and G. Morrison
DOI: http://dx.doi.org/10.1051/0004-6361:20054035
Abstract | Full HTML | PDF (848 KB) | PS (1.22 MB) | References | SIMBAD record | NASA ADS Abstract Service

A radio census of nuclear activity in nearby galaxies     p. 71
M. E. Filho, P. D. Barthel, and L. C. Ho
DOI: http://dx.doi.org/10.1051/0004-6361:20054510
Abstract | Full HTML | PDF (279 KB) | PS (164 KB) | References | SIMBAD record | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20054017
Abstract | Full HTML | PDF (1.07 MB) | PS (3.50 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Photometric survey of the polar ring galaxy NGC 6822     p. 99
P. Battinelli, S. Demers, and W. E. Kunkel
DOI: http://dx.doi.org/10.1051/0004-6361:20054718
Abstract | Full HTML | PDF (3.39 MB) | PS (11.6 MB) | References | SIMBAD record | NASA ADS Abstract Service


-  Galactic structure, stellar clusters, and populations
Dynamical stability of collisionless stellar systems and barotropic stars: the nonlinear Antonov first law     p. 109
P. H. Chavanis
DOI: http://dx.doi.org/10.1051/0004-6361:20054008
Abstract | Full HTML | PDF (334 KB) | PS (196 KB) | References | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20054712
Abstract | Full HTML | PDF (3.99 MB) | PS (1.03 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service


-  Interstellar and circumstellar matter
A dynamical model for the dusty ring in the Coalsack     p. 141
P. Hennebelle, A. P. Whitworth, and S. P. Goodwin
DOI: http://dx.doi.org/10.1051/0004-6361:20054634
Abstract | Full HTML | PDF (206 KB) | PS (1.08 MB) | References | SIMBAD record | NASA ADS Abstract Service


-  Stellar structure and evolution
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
DOI: http://dx.doi.org/10.1051/0004-6361:20053769
Abstract | Full HTML | PDF (242 KB) | PS (174 KB) | References | SIMBAD record | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20053396
Abstract | Full HTML | PDF (454 KB) | PS (212 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20054252
Abstract | Full HTML | PDF (1.82 MB) | PS (6.32 MB) | References | SIMBAD record | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20054235
Abstract | Full HTML | PDF (305 KB) | PS (119 KB) | References | SIMBAD record | NASA ADS Abstract Service

The magnetic field and confined wind of the O star θ1 Orionis C     p. 195
G. A. Wade, A. W. Fullerton, J.-F. Donati, J. D. Landstreet, P. Petit, and S. Strasser
DOI: http://dx.doi.org/10.1051/0004-6361:20054380
Abstract | Full HTML | PDF (624 KB) | PS (382 KB) | References | SIMBAD record | NASA ADS Abstract Service

C+O detonations in thermonuclear supernovae: interaction with previously burned material     p. 207
A. Maier, and J. C. Niemeyer
DOI: http://dx.doi.org/10.1051/0004-6361:20054094
Abstract | Full HTML | PDF (419 KB) | PS (1.85 MB) | References | NASA ADS Abstract Service

Protoneutron stars within the Brueckner-Bethe-Goldstone theory     p. 213
O. E. Nicotra, M. Baldo, G. F. Burgio, and H.-J. Schulze
DOI: http://dx.doi.org/10.1051/0004-6361:20053670
Abstract | Full HTML | PDF (265 KB) | PS (170 KB) | References | NASA ADS Abstract Service

Eruptions of the V838 Mon type: stellar merger versus nuclear outburst models     p. 223
R. Tylenda, and N. Soker
DOI: http://dx.doi.org/10.1051/0004-6361:20054201
Abstract | Full HTML | PDF (247 KB) | PS (92.0 KB) | References | SIMBAD record | NASA ADS Abstract Service

The second-order asymptotic representation of higher-order non-radial p-modes in stars revisited     p. 237
P. Smeyers
DOI: http://dx.doi.org/10.1051/0004-6361:20054546
Abstract | Full HTML | PDF (222 KB) | PS (395 KB) | References | NASA ADS Abstract Service

Radio observations and spectrum of the SNR G127.1+0.5 and its central source 0125+628     p. 251
D. Leahy, and W. Tian
DOI: http://dx.doi.org/10.1051/0004-6361:20054661
Abstract | Full HTML | PDF (867 KB) | PS (1.65 MB) | References | SIMBAD record | NASA ADS Abstract Service

Spectral energy distribution of the γ-ray microquasar LS 5039     p. 259
J. M. Paredes, V. Bosch-Ramon, and G. E. Romero
DOI: http://dx.doi.org/10.1051/0004-6361:20054155
Abstract | Full HTML | PDF (134 KB) | PS (61.7 KB) | References | SIMBAD record | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20054239
Abstract | Full HTML | PDF (139 KB) | PS (71.4 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Stellar atmospheres
A 3D radiative transfer framework - I. Non-local operator splitting and continuum scattering problems     p. 273
P. H. Hauschildt, and E. Baron
DOI: http://dx.doi.org/10.1051/0004-6361:20053846
Abstract | Full HTML | PDF (1.76 MB) | PS (4.95 MB) | References | NASA ADS Abstract Service

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
DOI: http://dx.doi.org/10.1051/0004-6361:20053905
Abstract | Full HTML | PDF (249 KB) | PS (256 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

A search for magnetic fields in the variable HgMn star α Andromedae     p. 293
G. A. Wade et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20054502
Abstract | Full HTML | PDF (232 KB) | PS (123 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service


-  The Sun
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
DOI: http://dx.doi.org/10.1051/0004-6361:20054499
Abstract | Full HTML | PDF (976 KB) | PS (2.89 MB) | References | NASA ADS Abstract Service

Evolution of magnetic fields and energetics of flares in active region 8210     p. 319
S. Régnier, and R. C. Canfield
DOI: http://dx.doi.org/10.1051/0004-6361:20054171
Abstract | Full HTML | PDF (743 KB) | PS (1.91 MB) | References | NASA ADS Abstract Service


-  Planets and planetary systems
Spectroscopy of near-Earth asteroids     p. 331
R. Michelsen, A. Nathues, and C.-I. Lagerkvist
DOI: http://dx.doi.org/10.1051/0004-6361:20040443
Abstract | Full HTML | PDF (299 KB) | PS (121 KB) | References | SIMBAD record | NASA ADS Abstract Service

The 2005 Draconid outburst     p. 339
M. Campbell-Brown, J. Vaubaillon, P. Brown, R. J. Weryk, and R. Arlt
DOI: http://dx.doi.org/10.1051/0004-6361:20054588
Abstract | Full HTML | PDF (380 KB) | PS (260 KB) | References | NASA ADS Abstract Service

The HARPS search for southern extra-solar planets - VII. A very hot Jupiter orbiting HD 212301     p. 345
G. Lo Curto et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20054083
Abstract | Full HTML | PDF (214 KB) | PS (86.8 KB) | References | SIMBAD record | NASA ADS Abstract Service

The origins of the substellar companion to GQ Lupi     p. 351
J. H. Debes, and S. Sigurdsson
DOI: http://dx.doi.org/10.1051/0004-6361:20064803
Abstract | Full HTML | PDF (82.4 KB) | PS (35.0 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Atomic, molecular, and nuclear data
Infrared reflection spectra of forsterite crystal     p. 357
H. Sogawa, C. Koike, H. Chihara, H. Suto, S. Tachibana, A. Tsuchiyama, and T. Kozasa
DOI: http://dx.doi.org/10.1051/0004-6361:20041538
Abstract | Full HTML | PDF (314 KB) | PS (101 KB) | References | NASA ADS Abstract Service


-  Instruments, observational techniques, and data processing
Removal of central obscuration and spider arm effects with beam-shaping coronagraphy     p. 363
L. Abe, N. Murakami, J. Nishikawa, and M. Tamura
DOI: http://dx.doi.org/10.1051/0004-6361:20053989
Abstract | Full HTML | PDF (558 KB) | PS (547 KB) | References | NASA ADS Abstract Service

Accurate photometry of extended spherically symmetric sources     p. 375
P. Anders, M. Gieles, and R. de Grijs
DOI: http://dx.doi.org/10.1051/0004-6361:20054175
Abstract | Full HTML | PDF (1.56 MB) | PS (100 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service