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Astronomy and Astrophysics

Vol. 454, No. 3 (August II 2006)

An exceptional X-ray view of a young open cluster (Sana, H., et al., p. 1051)
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-  Letters
The bright optical flash from GRB 060117     p. L119
M. Jelínek et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20065092
Abstract | Full HTML | PDF (473 KB) | PS (196 KB) | References | SIMBAD record | NASA ADS Abstract Service

Are short γ-ray bursts collimated? GRB 050709, a flare but no break     p. L123
D. Watson, J. Hjorth, P. Jakobsson, D. Xu, J. P. U. Fynbo, J. Sollerman, C. C. Thöne, and K. Pedersen
DOI: http://dx.doi.org/10.1051/0004-6361:20065380
Abstract | Full HTML | PDF (117 KB) | PS (246 KB) | References | SIMBAD record | NASA ADS Abstract Service

[Ar III]/[O III] and [S III]/[O III]: well-behaved oxygen abundance indicators for HII regions and star forming galaxies     p. L127
G. Stasińska
DOI: http://dx.doi.org/10.1051/0004-6361:20065516
Abstract | Full HTML | PDF (333 KB) | PS (1.22 MB) | References | NASA ADS Abstract Service

The impact of magnetic field on the cluster M – T relation     p. L131
S. Colafrancesco, and F. Giordano
DOI: http://dx.doi.org/10.1051/0004-6361:20065404
Abstract | Full HTML | PDF (162 KB) | PS (61.6 KB) | References | NASA ADS Abstract Service


-  Astrophysical processes
Cosmic rays X. The cosmic ray knee and beyond: diffusive acceleration at oblique shocks     p. 687
A. Meli, and P. L. Biermann
DOI: http://dx.doi.org/10.1051/0004-6361:20064964
Abstract | Full HTML | PDF (178 KB) | PS (157 KB) | References | NASA ADS Abstract Service

How accurate are the time delay estimates in gravitational lensing?     p. 695
J. C. Cuevas-Tello, P. Tiňo, and S. Raychaudhury
DOI: http://dx.doi.org/10.1051/0004-6361:20054652
Abstract | Full HTML | PDF (419 KB) | PS (190 KB) | References | NASA ADS Abstract Service


-  Cosmology (including clusters of galaxies)
Cosmological constraints on f(R) gravity theories within the Palatini approach     p. 707
M. Amarzguioui, Ø. Elgarøy, D. F. Mota, and T. Multamäki
DOI: http://dx.doi.org/10.1051/0004-6361:20064994
Abstract | Full HTML | PDF (208 KB) | PS (158 KB) | References | NASA ADS Abstract Service

Erratum: Probing dark matter caustics with weak lensing     p. 715
R. Gavazzi, R. Mohayaee, and B. Fort
DOI: http://dx.doi.org/10.1051/0004-6361:20053557e
Abstract | Full HTML | PDF (243 KB) | PS (70.7 KB) | Online Material | NASA ADS Abstract Service


-  Extragalactic astronomy
The evolved asymptotic giant branch stars in the central bar of the dwarf irregular galaxy NGC 6822     p. 717
A. Kang, Y.-J. Sohn, H.-I. Kim, J. Rhee, J.-W. Kim, N. Hwang, M. G. Lee, Y.-C. Kim, and M.-S. Chun
DOI: http://dx.doi.org/10.1051/0004-6361:20054763
Abstract | Full HTML | PDF (5.02 MB) | PS (4.51 MB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

European VLBI network observations of fourteen GHz-peaked-spectrum radio sources at 5 GHz     p. 729
L. Xiang, C. Reynolds, R. G. Strom, and D. Dallacasa
DOI: http://dx.doi.org/10.1051/0004-6361:20053885
Abstract | Full HTML | PDF (564 KB) | PS (577 KB) | References | SIMBAD record | NASA ADS Abstract Service

The structure and X-ray radiation spectra of illuminated accretion disks in AGN - III. Modeling fractional variability     p. 741
R. W. Goosmann, B. Czerny, M. Mouchet, G. Ponti, M. Dovčiak, V. Karas, A. Różańska, and A.-M. Dumont
DOI: http://dx.doi.org/10.1051/0004-6361:20054344
Abstract | Full HTML | PDF (553 KB) | PS (366 KB) | References | SIMBAD record | NASA ADS Abstract Service

GRB 051210: Swift detection of a short gamma ray burst     p. 753
V. La Parola et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20065083
Abstract | Full HTML | PDF (235 KB) | PS (77.3 KB) | References | SIMBAD record | NASA ADS Abstract Service

The structure of galactic disks - Studying late-type spiral galaxies using SDSS     p. 759
M. Pohlen, and I. Trujillo
DOI: http://dx.doi.org/10.1051/0004-6361:20064883
Abstract | Full HTML | PDF (14.3 MB) | PS (68.6 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Erratum: Optical novae: the major class of supersoft X-ray sources in M 31     p. 773
W. Pietsch, J. Fliri, M. J. Freyberg, J. Greiner, F. Haberl, A. Riffeser, and G. Sala
DOI: http://dx.doi.org/10.1051/0004-6361:20053127e
Abstract | Full HTML | PDF (27.8 KB) | PS (12.0 KB) | NASA ADS Abstract Service


-  Galactic structure, stellar clusters, and populations
Observations of 14 young open star clusters with the HEGRA system of Cherenkov telescopes     p. 775
F. Aharonian et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20053234
Abstract | Full HTML | PDF (106 KB) | PS (49.8 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Interstellar and circumstellar matter
2MASS wide field extinction maps - I. The Pipe nebula     p. 781
M. Lombardi, J. Alves, and C. J. Lada
DOI: http://dx.doi.org/10.1051/0004-6361:20042474
Abstract | Full HTML | PDF (5.47 MB) | PS (4.36 MB) | References | SIMBAD record | NASA ADS Abstract Service

Stationary field-aligned MHD flows at astropauses and in astrotails - Principles of a counterflow configuration between a stellar wind and its interstellar medium wind     p. 797
D. H. Nickeler, J. P. Goedbloed, and H.-J. Fahr
DOI: http://dx.doi.org/10.1051/0004-6361:20053062
Abstract | Full HTML | PDF (1.54 MB) | PS (1.69 MB) | References | Online Material | NASA ADS Abstract Service

The fate of discs around massive stars in young clusters     p. 811
S. Pfalzner, C. Olczak, and A. Eckart
DOI: http://dx.doi.org/10.1051/0004-6361:20064905
Abstract | Full HTML | PDF (86.2 KB) | PS (47.3 KB) | References | SIMBAD record | NASA ADS Abstract Service

The nature of turbulence in OMC1 at the scale of star formation: observations and simulations     p. 815
M. Gustafsson, A. Brandenburg, J. L. Lemaire, and D. Field
DOI: http://dx.doi.org/10.1051/0004-6361:20054658
Abstract | Full HTML | PDF (2.14 MB) | PS (1.50 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Optical polarimetric monitoring of the type II-plateau SN 2005af     p. 827
A. Pereyra, A. M. Magalhães, C. V. Rodrigues, C. R. Silva, R. Campos, G. Hickel, and D. Cieslinski
DOI: http://dx.doi.org/10.1051/0004-6361:20065207
Abstract | Full HTML | PDF (566 KB) | PS (2.70 MB) | References | SIMBAD record | NASA ADS Abstract Service


-  Stellar structure and evolution
Spectrometric composition of nearby K dwarfs     p. 833
E. Kotoneva, J. R. Shi, G. Zhao, and Y. J. Liu
DOI: http://dx.doi.org/10.1051/0004-6361:20042498
Abstract | Full HTML | PDF (1.01 MB) | PS (687 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Precise radial velocities with BOES - Detection of low-amplitude pulsations in the K-giant α Arietis     p. 839
K. M. Kim, D. E. Mkrtichian, B.-C. Lee, Inwoo Han, and A. P. Hatzes
DOI: http://dx.doi.org/10.1051/0004-6361:20053073
Abstract | Full HTML | PDF (487 KB) | PS (380 KB) | References | SIMBAD record | NASA ADS Abstract Service

Full evolutionary models for PG 1159 stars. Implications for the helium-rich O(He) stars     p. 845
M. M. Miller Bertolami, and L. G. Althaus
DOI: http://dx.doi.org/10.1051/0004-6361:20054723
Abstract | Full HTML | PDF (706 KB) | PS (667 KB) | References | SIMBAD record | NASA ADS Abstract Service

Indirect imaging of an accretion disk rim in the long-period interacting binary W Crucis     p. 855
K. Pavlovski, G. Burki, and P. Mimica
DOI: http://dx.doi.org/10.1051/0004-6361:20054733
Abstract | Full HTML | PDF (612 KB) | PS (249 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Asteroseismic inferences on GW Virginis variable stars in the frame of new PG 1159 evolutionary models     p. 863
A. H. Córsico, and L. G. Althaus
DOI: http://dx.doi.org/10.1051/0004-6361:20054199
Abstract | Full HTML | PDF (1.04 MB) | PS (781 KB) | References | SIMBAD record | NASA ADS Abstract Service

2-dimensional models of rapidly rotating stars - II. Hydrostatic and acoustic models with     p. 883
I. W. Roxburgh
DOI: http://dx.doi.org/10.1051/0004-6361:20065109
Abstract | Full HTML | PDF (212 KB) | PS (75.1 KB) | References | NASA ADS Abstract Service


-  Stellar atmospheres
Opacity in the upper atmospheres of active stars - II. AD Leonis     p. 889
D. J. Christian, M. Mathioudakis, D. S. Bloomfield, J. Dupuis, F. P. Keenan, D. L. Pollacco, and R. F. Malina
DOI: http://dx.doi.org/10.1051/0004-6361:20054404
Abstract | Full HTML | PDF (162 KB) | PS (78.0 KB) | References | SIMBAD record | NASA ADS Abstract Service

Analysis of 26 barium stars - I. Abundances     p. 895
D. M. Allen, and B. Barbuy
DOI: http://dx.doi.org/10.1051/0004-6361:20064912
Abstract | Full HTML | PDF (883 KB) | PS (444 KB) | References | Online Material | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Analysis of 26 barium stars - II. Contributions of s-, r-, and p-processes in the production of heavy elements     p. 917
D. M. Allen, and B. Barbuy
DOI: http://dx.doi.org/10.1051/0004-6361:20064968
Abstract | Full HTML | PDF (1.08 MB) | PS (373 KB) | References | Online Material | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

Stellar model atmospheres with magnetic line blanketing - III. The role of magnetic field inclination     p. 933
S. A. Khan, and D. V. Shulyak
DOI: http://dx.doi.org/10.1051/0004-6361:20064938
Abstract | Full HTML | PDF (228 KB) | PS (122 KB) | References | NASA ADS Abstract Service

Precise radial velocities of giant stars - I. Stable stars     p. 943
S. Hekker, S. Reffert, A. Quirrenbach, D. S. Mitchell, D. A. Fischer, G. W. Marcy, and R. P. Butler
DOI: http://dx.doi.org/10.1051/0004-6361:20064946
Abstract | Full HTML | PDF (304 KB) | PS (110 KB) | References | SIMBAD record | NASA ADS Abstract Service

New DQ white dwarfs in the Sloan Digital Sky Survey DR4: confirmation of two sequences     p. 951
D. Koester, and S. Knist
DOI: http://dx.doi.org/10.1051/0004-6361:20065287
Abstract | Full HTML | PDF (872 KB) | PS (760 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service


-  The Sun
Gyrokinetic electron acceleration in the force-free corona with anomalous resistivity     p. 957
K. Arzner, and L. Vlahos
DOI: http://dx.doi.org/10.1051/0004-6361:20064953
Abstract | Full HTML | PDF (2.02 MB) | PS (1.10 MB) | References | NASA ADS Abstract Service

Electron acceleration by the reconnection outflow shock during solar flares     p. 969
G. Mann, H. Aurass, and A. Warmuth
DOI: http://dx.doi.org/10.1051/0004-6361:20064990
Abstract | Full HTML | PDF (388 KB) | PS (381 KB) | References | NASA ADS Abstract Service

The flow field in the sunspot canopy     p. 975
R. Rezaei, R. Schlichenmaier, C. Beck, and L. R. Bellot Rubio
DOI: http://dx.doi.org/10.1051/0004-6361:20065180
Abstract | Full HTML | PDF (1.13 MB) | PS (2.39 MB) | References | NASA ADS Abstract Service

Simulated enhancement of solar type II radio bursts during the collision of two shocks associated with coronal mass ejections     p. 983
J. I. Sakai, T. Mori, S. Saito, Y. Tanaka, and H. Aurass
DOI: http://dx.doi.org/10.1051/0004-6361:20065130
Abstract | Full HTML | PDF (533 KB) | PS (1.19 MB) | References | NASA ADS Abstract Service


-  Planets and planetary systems
Radial distribution of planets - Predictions based on the core-accretion gas-capture planet-formation model     p. 989
K. Kornet, and S. Wolf
DOI: http://dx.doi.org/10.1051/0004-6361:20053895
Abstract | Full HTML | PDF (344 KB) | PS (332 KB) | References | NASA ADS Abstract Service


-  Instruments, observational techniques, and data processing
Matched filters for source detection in the Poissonian noise regime     p. 997
I. M. Stewart
DOI: http://dx.doi.org/10.1051/0004-6361:20053498
Abstract | Full HTML | PDF (325 KB) | PS (134 KB) | References | SIMBAD record | NASA ADS Abstract Service

Speckle reconstruction of photometric data observed with adaptive optics     p. 1011
K. G. Puschmann, and M. Sailer
DOI: http://dx.doi.org/10.1051/0004-6361:20053918
Abstract | Full HTML | PDF (1.25 MB) | PS (1.26 MB) | References | NASA ADS Abstract Service

Curvelet analysis of asteroseismic data - I. Method description and application to simulated sun-like stars     p. 1021
P. Lambert, S. Pires, J. Ballot, R. A. García, J.-L. Starck, and S. Turck-Chièze
DOI: http://dx.doi.org/10.1051/0004-6361:20054541
Abstract | Full HTML | PDF (1.19 MB) | PS (1.66 MB) | References | NASA ADS Abstract Service

Ground-based CCD astrometry with wide field imagers - I. Observations just a few years apart allow decontamination of field objects from members in two globular clusters     p. 1029
J. Anderson, L. R. Bedin, G. Piotto, R. S. Yadav, and A. Bellini
DOI: http://dx.doi.org/10.1051/0004-6361:20065004
Abstract | Full HTML | PDF (5.31 MB) | PS (6.03 MB) | References | SIMBAD record | NASA ADS Abstract Service


-  Online catalogs and data
An XMM-Newton view of the young open cluster NGC 6231 - I. The catalogue     p. 1047
H. Sana, E. Gosset, G. Rauw, H. Sung, and J.-M. Vreux
DOI: http://dx.doi.org/10.1051/0004-6361:20053224
Abstract | Full HTML | PDF (1.40 MB) | PS (7.56 MB) | References | Online Material | Tables at CDS | SIMBAD record | NASA ADS Abstract Service