Astronomy and Astrophysics
	Vol. 454 No. 3 (August II 2006)
Cover illustration: An exceptional X-ray view of a young open cluster (Sana, H., et al., p. 1051)

Letters


• The bright optical flash from GRB 060117     p. L119
  M. Jelínek, M. Prouza, P. Kubánek, R. Hudec, M. Nekola, J. Rídký, J. Grygar, M. Bohácová, A. J. Castro-Tirado, J. Gorosabel, M. Hrabovský, D. Mandát, D. Nosek, L. Nozka, M. Palatka, S. B. Pandey, M. Pech, P. Schovánek, R. Smída, P. Trávnícek, A. de Ugarte Postigo and S. Vítek
  Abstract | Full HTML | PDF file (473 KB) | PS file (196 KB) | References




• Are short -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
  Abstract | Full HTML | PDF file (117 KB) | PS file (246 KB) | References




• [Ar III]/[O III] and [S III]/[O III]: well-behaved oxygen abundance indicators for HII regions and star forming galaxies     p. L127
  G. Stasinska
  Abstract | Full HTML | PDF file (333 KB) | PS file (1.22 MB) | References




• The impact of magnetic field on the cluster M - T relation     p. L131
  S. Colafrancesco and F. Giordano
  Abstract | Full HTML | PDF file (162 KB) | PS file (61.6 KB) | References



Astrophysical processes
• Cosmic rays X. The cosmic ray knee and beyond: diffusive acceleration at oblique shocks     p. 687
  A. Meli and P. L. Biermann
  Abstract | Full HTML | PDF file (178 KB) | PS file (157 KB) | References



• How accurate are the time delay estimates in gravitational lensing?     p. 695
  J. C. Cuevas-Tello, P. Tino and S. Raychaudhury
  Abstract | Full HTML | PDF file (419 KB) | PS file (190 KB) | References



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
  Abstract | Full HTML | PDF file (208 KB) | PS file (158 KB) | References


Erratum

• Probing dark matter caustics with weak lensing     p. 715
  R. Gavazzi, R. Mohayaee and B. Fort
  Abstract | Full HTML | PDF file (243 KB) | PS file (70.7 KB) | Online Material



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
  Abstract | Full HTML | PDF file (5.02 MB) | PS file (4.51 MB) | References



• 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
  Abstract | Full HTML | PDF file (564 KB) | PS file (577 KB) | References



• 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. Dovciak, V. Karas, A. Rózanska and A.-M. Dumont
  Abstract | Full HTML | PDF file (553 KB) | PS file (366 KB) | References



• GRB 051210: Swift detection of a short gamma ray burst     p. 753
  V. La Parola, V. Mangano, D. Fox, B. Zhang, H. A. Krimm, G. Cusumano, T. Mineo, D. N. Burrows, S. Barthelmy, S. Campana, M. Capalbi, G. Chincarini, N. Gehrels, P. Giommi, F. E. Marshall, P. Mészáros, A. Moretti, P. T. O'Brien, D. M. Palmer, M. Perri, P. Romano and G. Tagliaferri
  Abstract | Full HTML | PDF file (235 KB) | PS file (77.3 KB) | References



• The structure of galactic disks - Studying late-type spiral galaxies using SDSS     p. 759
  M. Pohlen and I. Trujillo
  Abstract | Full HTML | PDF file (14.3 MB) | PS file (68.6 MB) | References | Online Material


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
  Abstract | Full HTML | PDF file (27.8 KB) | PS file (12.0 KB)



Galactic structure, stellar clusters, and populations
• Observations of 14 young open star clusters with the HEGRA system of Cherenkov telescopes     p. 775
  F. Aharonian, A. Akhperjanian, M. Beilicke, K. Bernlöhr, H.-G. Börst, H. Bojahr, O. Bolz, T. Coarasa, J. L. Contreras, J. Cortina, S. Denninghoff, M. V. Fonseca, M. Girma, N. Götting, G. Heinzelmann, G. Hermann, A. Heusler, W. Hofmann, D. Horns, I. Jung, R. Kankanyan, M. Kestel, A. Konopelko, H. Kornmeyer, D. Kranich, H. Lampeitl, M. Lopez, E. Lorenz, F. Lucarelli, O. Mang, H. Meyer, R. Mirzoyan, A. Moralejo, E. Ona-Wilhelmi, M. Panter, A. Plyasheshnikov, G. Pühlhofer, R. de los Reyes, W. Rhode, J. Ripken, G. Rowell, V. Sahakian, M. Samorski, M. Schilling, M. Siems, D. Sobzynska, W. Stamm, M. Tluczykont, V. Vitale, H. J. Völk, C. A. Wiedner and W. Wittek
  Abstract | Full HTML | PDF file (106 KB) | PS file (49.8 KB) | References



Interstellar and circumstellar matter
• 2MASS wide field extinction maps - I. The Pipe nebula     p. 781
  M. Lombardi, J. Alves and C. J. Lada
  Abstract | Full HTML | PDF file (5.47 MB) | PS file (4.36 MB) | References



• 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
  Abstract | Full HTML | PDF file (1.54 MB) | PS file (1.69 MB) | References | Online Material



• The fate of discs around massive stars in young clusters     p. 811
  S. Pfalzner, C. Olczak and A. Eckart
  Abstract | Full HTML | PDF file (86.2 KB) | PS file (47.3 KB) | References



• 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
  Abstract | Full HTML | PDF file (2.14 MB) | PS file (1.50 MB) | References | Online Material



• 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
  Abstract | Full HTML | PDF file (566 KB) | PS file (2.70 MB) | References



Stellar structure and evolution
• Spectrometric composition of nearby K dwarfs     p. 833
  E. Kotoneva, J. R. Shi, G. Zhao and Y. J. Liu
  Abstract | Full HTML | PDF file (1.01 MB) | PS file (687 KB) | References | Online Material



• Precise radial velocities with BOES - Detection of low-amplitude pulsations in the K-giant Arietis     p. 839
  K. M. Kim, D. E. Mkrtichian, B.-C. Lee, Inwoo Han and A. P. Hatzes
  Abstract | Full HTML | PDF file (487 KB) | PS file (380 KB) | References



• 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
  Abstract | Full HTML | PDF file (706 KB) | PS file (667 KB) | References



• Indirect imaging of an accretion disk rim in the long-period interacting binary W Crucis     p. 855
  K. Pavlovski, G. Burki and P. Mimica
  Abstract | Full HTML | PDF file (612 KB) | PS file (249 KB) | References



• 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
  Abstract | Full HTML | PDF file (1.04 MB) | PS file (781 KB) | References



• 2-dimensional models of rapidly rotating stars - II. Hydrostatic and acoustic models with     p. 883
  I. W. Roxburgh
  Abstract | Full HTML | PDF file (212 KB) | PS file (75.1 KB) | References



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
  Abstract | Full HTML | PDF file (162 KB) | PS file (78.0 KB) | References



• Analysis of 26 barium stars - I. Abundances     p. 895
  D. M. Allen and B. Barbuy
  Abstract | Full HTML | PDF file (883 KB) | PS file (444 KB) | References | Online Material



• 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
  Abstract | Full HTML | PDF file (1.08 MB) | PS file (373 KB) | References | Online Material



• Stellar model atmospheres with magnetic line blanketing - III. The role of magnetic field inclination     p. 933
  S. A. Khan and D. V. Shulyak
  Abstract | Full HTML | PDF file (228 KB) | PS file (122 KB) | References



• 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
  Abstract | Full HTML | PDF file (304 KB) | PS file (110 KB) | References



• New DQ white dwarfs in the Sloan Digital Sky Survey DR4: confirmation of two sequences     p. 951
  D. Koester and S. Knist
  Abstract | Full HTML | PDF file (872 KB) | PS file (760 KB) | References | Online Material



The Sun
• Gyrokinetic electron acceleration in the force-free corona with anomalous resistivity     p. 957
  K. Arzner and L. Vlahos
  Abstract | Full HTML | PDF file (2.02 MB) | PS file (1.10 MB) | References



• Electron acceleration by the reconnection outflow shock during solar flares     p. 969
  G. Mann, H. Aurass and A. Warmuth
  Abstract | Full HTML | PDF file (388 KB) | PS file (381 KB) | References



• The flow field in the sunspot canopy     p. 975
  R. Rezaei, R. Schlichenmaier, C. Beck and L. R. Bellot Rubio
  Abstract | Full HTML | PDF file (1.13 MB) | PS file (2.39 MB) | References



• 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
  Abstract | Full HTML | PDF file (533 KB) | PS file (1.19 MB) | References



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
  Abstract | Full HTML | PDF file (344 KB) | PS file (332 KB) | References



Instruments, observational techniques, and data processing
• Matched filters for source detection in the Poissonian noise regime     p. 997
  I. M. Stewart
  Abstract | Full HTML | PDF file (325 KB) | PS file (134 KB) | References



• Speckle reconstruction of photometric data observed with adaptive optics     p. 1011
  K. G. Puschmann and M. Sailer
  Abstract | Full HTML | PDF file (1.25 MB) | PS file (1.26 MB) | References



• 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
  Abstract | Full HTML | PDF file (1.19 MB) | PS file (1.66 MB) | References



• 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
  Abstract | Full HTML | PDF file (5.31 MB) | PS file (6.03 MB) | References



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
  Abstract | Full HTML | PDF file (1.40 MB) | PS file (7.56 MB) | References | Online Material

© ESO 2006