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Astronomy and Astrophysics

Vol. 474, No. 2 (November I 2007)

K-band image of Orion Trapezium and BN-KL region (courtesy M. McCaughrean) (K. M. Menten, et al., p. 517)
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-  Letters
Clathrate hydrates as a sink of noble gases in Titan's atmosphere     p. L17
C. Thomas, O. Mousis, V. Ballenegger, and S. Picaud
DOI: http://dx.doi.org/10.1051/0004-6361:20078072
Abstract | Full HTML | PDF (96.42 KB) | PS (301.7 KB) | References | NASA ADS Abstract Service

K–H2 quasi-molecular absorption detected in the T-dwarf ε Indi Ba     p. L21
F. Allard, N. F.  Allard, D. Homeier, J. Kielkopf, M. J. McCaughrean, and F. Spiegelman
DOI: http://dx.doi.org/10.1051/0004-6361:20078362
Abstract | Full HTML | PDF (547.7 KB) | PS (876.8 KB) | References | NASA ADS Abstract Service

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The X-ray soft excess in classical T Tauri stars     p. L25
M. Güdel and A. Telleschi
DOI: http://dx.doi.org/10.1051/0004-6361:20078143
Abstract | Full HTML | PDF (148.6 KB) | PS (68.30 KB) | References | NASA ADS Abstract Service

Are the E-type asteroids (2867) Steins, a target of the Rosetta mission, and NEA (3103) Eger remnants of an old asteroid family?     p. L29
S. Fornasier, F. Marzari, E. Dotto, M. A. Barucci, and A. Migliorini
DOI: http://dx.doi.org/10.1051/0004-6361:20078411
Abstract | Full HTML | PDF (120.3 KB) | PS (75.80 KB) | References | NASA ADS Abstract Service

Emission of electromagnetic waves by proton beams in solar plasmas     p. L33
J. I. Sakai and Y. Nagasugi
DOI: http://dx.doi.org/10.1051/0004-6361:20078471
Abstract | Full HTML | PDF (216.9 KB) | PS (241.6 KB) | References | NASA ADS Abstract Service


-  Astrophysical processes
Constraints on cosmic-ray positron excess and average pulsar parameters     p. 339
C. Grimani
DOI: http://dx.doi.org/10.1051/0004-6361:20077776
Abstract | Full HTML | PDF (144.4 KB) | PS (61.00 KB) | References | NASA ADS Abstract Service

The spectroscopic binary system Gl 375 - I. Orbital parameters and chromospheric activity     p. 345
R. F. Díaz, J. F. González, C. Cincunegui, and P. J. D. Mauas
DOI: http://dx.doi.org/10.1051/0004-6361:20078195
Abstract | Full HTML | PDF (431.1 KB) | PS (271.9 KB) | References | NASA ADS Abstract Service


-  Cosmology (including clusters of galaxies)
Selection effects on X-ray and strong-lensing clusters in various cosmologies     p. 355
C. Fedeli and M. Bartelmann
DOI: http://dx.doi.org/10.1051/0004-6361:20077572
Abstract | Full HTML | PDF (380.6 KB) | PS (146.9 KB) | References | NASA ADS Abstract Service

Lyman-alpha radiative transfer during the epoch of reionization: contribution to 21-cm signal fluctuations     p. 365
B. Semelin, F. Combes, and S. Baek
DOI: http://dx.doi.org/10.1051/0004-6361:20077965
Abstract | Full HTML | PDF (406.4 KB) | PS (232.9 KB) | References | NASA ADS Abstract Service

An approximate theory for substructure propagation in clusters     p. 375
D. A. Prokhorov and F. Durret
DOI: http://dx.doi.org/10.1051/0004-6361:20077542
Abstract | Full HTML | PDF (167.3 KB) | PS (183.1 KB) | References | NASA ADS Abstract Service

Narrow-band surveys for very high redshift Lyman-α emitters     p. 385
K. K. Nilsson, A. Orsi, C. G. Lacey, C. M. Baugh, and E. Thommes
DOI: http://dx.doi.org/10.1051/0004-6361:20077913
Abstract | Full HTML | PDF (271.4 KB) | PS (93.98 KB) | References | NASA ADS Abstract Service


-  Extragalactic astronomy
Excitation mechanisms in newly discovered H2-bearing damped Lyman-α clouds: systems with low molecular fractions     p. 393
P. Noterdaeme, C. Ledoux, P. Petitjean, F. Le Petit, R. Srianand, and A. Smette
DOI: http://dx.doi.org/10.1051/0004-6361:20078021
Abstract | Full HTML | PDF (1.524 MB) | PS (1.372 MB) | References | Online Material | NASA ADS Abstract Service

B2 1144+35B, a giant low power radio galaxy with superluminal motion - Orientation and evidence for recurrent activity     p. 409
G. Giovannini, M. Giroletti, and G. B. Taylor
DOI: http://dx.doi.org/10.1051/0004-6361:20078058
Abstract | Full HTML | PDF (263.8 KB) | PS (193.5 KB) | References | NASA ADS Abstract Service

Magnetic fields and gas in the cluster-influenced spiral galaxy NGC 4254 - I. Radio and X-rays observations     p. 415
K. T. Chyży, M. Ehle, and R. Beck
DOI: http://dx.doi.org/10.1051/0004-6361:20077497
Abstract | Full HTML | PDF (2.469 MB) | PS (2.904 MB) | References | Online Material | NASA ADS Abstract Service

XMM-Newton observation of the deep minimum state of PG 2112+059 - A spectrum dominated by reflection from the accretion disk?     p. 431
N. Schartel, P. M. Rodríguez-Pascual, M. Santos-Lleó, L. Ballo, J. Clavel, M. Guainazzi, E. Jiménez-Bailón, and E. Piconcelli
DOI: http://dx.doi.org/10.1051/0004-6361:20077812
Abstract | Full HTML | PDF (198.9 KB) | PS (81.70 KB) | References | NASA ADS Abstract Service

The VIMOS VLT Deep Survey - The assembly history of the stellar mass in galaxies: from the young to the old universe     p. 443
L. Pozzetti et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20077609
Abstract | Full HTML | PDF (1.951 MB) | PS (1.046 MB) | References | NASA ADS Abstract Service

PAHs in the halo of NGC 5529     p. 461
J. A. Irwin, H. Kennedy, T. Parkin, and S. Madden
DOI: http://dx.doi.org/10.1051/0004-6361:20077729
Abstract | Full HTML | PDF (903.4 KB) | PS (1.684 MB) | References | NASA ADS Abstract Service

The XMM large scale structure survey: optical vs. X-ray classifications of active galactic nuclei and the unified scheme     p. 473
O. Garcet et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20077778
Abstract | Full HTML | PDF (554.3 KB) | PS (434.6 KB) | References | Online Material | NASA ADS Abstract Service


-  Galactic structure, stellar clusters, and populations
White dwarf atmosphere models with Ly-alpha opacity in the analysis of the white dwarf cooling sequence of NGC 6397     p. 491
P. M. Kowalski
DOI: http://dx.doi.org/10.1051/0004-6361:20077985
Abstract | Full HTML | PDF (96.07 KB) | PS (53.39 KB) | References | NASA ADS Abstract Service

X-ray flaring from the young stars in Cygnus OB2     p. 495
J. F. Albacete Colombo, M. Caramazza, E. Flaccomio, G. Micela, and S. Sciortino
DOI: http://dx.doi.org/10.1051/0004-6361:20078064
Abstract | Full HTML | PDF (474.3 KB) | PS (539.7 KB) | References | Online Material | NASA ADS Abstract Service

Spectroscopy of horizontal branch stars in NGC 6752 - Anomalous results on atmospheric parameters and masses     p. 505
C. Moni Bidin, S. Moehler, G. Piotto, Y. Momany, and A. Recio-Blanco
DOI: http://dx.doi.org/10.1051/0004-6361:20078184
Abstract | Full HTML | PDF (696.8 KB) | PS (420.5 KB) | References | NASA ADS Abstract Service

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The distance to the Orion Nebula     p. 515
K. M. Menten, M. J. Reid, J. Forbrich, and A. Brunthaler
DOI: http://dx.doi.org/10.1051/0004-6361:20078247
Abstract | Full HTML | PDF (198.6 KB) | PS (180.4 KB) | References | NASA ADS Abstract Service


-  Interstellar and circumstellar matter
Possible gas-phase syntheses for seven neutral molecules studied recently with the Green Bank Telescope     p. 521
D. Quan and E. Herbst
DOI: http://dx.doi.org/10.1051/0004-6361:20078246
Abstract | Full HTML | PDF (248.0 KB) | PS (102.6 KB) | References | Online Material | NASA ADS Abstract Service

A hydrodynamical study of multiple-shell planetary nebulae - II. Measuring the post-shock velocities in the shells     p. 529
R. L. M. Corradi, M. Steffen, D. Schönberner, and R. Jacob
DOI: http://dx.doi.org/10.1051/0004-6361:20077293
Abstract | Full HTML | PDF (962.6 KB) | PS (600.4 KB) | References | NASA ADS Abstract Service

Radio and X-ray images of the SNR G18.8+0.3 interacting with molecular clouds     p. 541
W. W. Tian, D. A. Leahy, and Q. D. Wang
DOI: http://dx.doi.org/10.1051/0004-6361:20077527
Abstract | Full HTML | PDF (357.8 KB) | PS (449.6 KB) | References | NASA ADS Abstract Service


-  Stellar structure and evolution
A hydrodynamic scheme for two-component winds from hot stars     p. 549
V. Votruba, A. Feldmeier, J. Kubát, and D. Rätzel
DOI: http://dx.doi.org/10.1051/0004-6361:20066376
Abstract | Full HTML | PDF (156.3 KB) | PS (82.91 KB) | References | NASA ADS Abstract Service

Modeling of RR Lyrae light curves: the case of M3     p. 557
M. Marconi and S. Degl'Innocenti
DOI: http://dx.doi.org/10.1051/0004-6361:20065840
Abstract | Full HTML | PDF (2.311 MB) | PS (1012 KB) | References | Online Material | NASA ADS Abstract Service

The spin axes orbital alignment of both stars within the eclipsing binary system V1143 Cyg using the Rossiter-McLaughlin effect     p. 565
S. Albrecht, S. Reffert, I. Snellen, A. Quirrenbach, and D. S. Mitchell
DOI: http://dx.doi.org/10.1051/0004-6361:20077953
Abstract | Full HTML | PDF (421.3 KB) | PS (244.4 KB) | References | Online Material | NASA ADS Abstract Service

Swift/XRT monitoring of five orbital cycles of LS I +61° 303     p. 575
P. Esposito, P. A. Caraveo, A. Pellizzoni, A. De Luca, N. Gehrels, and M. A. Marelli
DOI: http://dx.doi.org/10.1051/0004-6361:20078334
Abstract | Full HTML | PDF (126.5 KB) | PS (64.73 KB) | References | NASA ADS Abstract Service

A spectroscopic study of the close eclipsing binary HS Herculis     p. 579
Ö. Çakırlı, C. İbanoǧlu, and A. Frasca
DOI: http://dx.doi.org/10.1051/0004-6361:20077845
Abstract | Full HTML | PDF (294.8 KB) | PS (110.8 KB) | References | NASA ADS Abstract Service


-  Stellar atmospheres
Eclipse of the B3V companion and flaring of emission lines in V838 Monocerotis     p. 585
U. Munari et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20077837
Abstract | Full HTML | PDF (563.2 KB) | PS (245.0 KB) | References | Online Material | NASA ADS Abstract Service

Identification of Ne VIII lines in H-deficient (pre-) white dwarfs: a new tool to constrain the temperature of the hottest stars     p. 591
K. Werner, T. Rauch, and J. W. Kruk
DOI: http://dx.doi.org/10.1051/0004-6361:20078152
Abstract | Full HTML | PDF (423.3 KB) | PS (337.4 KB) | References | NASA ADS Abstract Service

The molecular and dusty composition of Betelgeuse's inner circumstellar environment     p. 599
G. Perrin, T. Verhoelst, S. T. Ridgway, J. Cami, Q. N. Nguyen, O. Chesneau, B. Lopez, Ch. Leinert, and A. Richichi
DOI: http://dx.doi.org/10.1051/0004-6361:20077863
Abstract | Full HTML | PDF (874.6 KB) | PS (1.460 MB) | References | NASA ADS Abstract Service


-  The Sun
Coronal ion-cyclotron beam instabilities within the multi-fluid description     p. 609
R. Mecheri and E. Marsch
DOI: http://dx.doi.org/10.1051/0004-6361:20077648
Abstract | Full HTML | PDF (1.431 MB) | PS (4.388 MB) | References | NASA ADS Abstract Service

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The electron acceleration at shock waves in the solar corona     p. 617
R. Miteva and G. Mann
DOI: http://dx.doi.org/10.1051/0004-6361:20066856
Abstract | Full HTML | PDF (812.2 KB) | PS (772.7 KB) | References | NASA ADS Abstract Service

Doppler-shift oscillations in solar spicules     p. 627
T. V. Zaqarashvili, E. Khutsishvili, V. Kukhianidze, and G. Ramishvili
DOI: http://dx.doi.org/10.1051/0004-6361:20077661
Abstract | Full HTML | PDF (670.8 KB) | PS (746.9 KB) | References | NASA ADS Abstract Service

Photospheric magnetic evolution of super active regions     p. 633
P. Romano and F. Zuccarello
DOI: http://dx.doi.org/10.1051/0004-6361:20078110
Abstract | Full HTML | PDF (4.002 MB) | PS (2.862 MB) | References | Online Material | NASA ADS Abstract Service


-  Planets and planetary systems
Is a 2004 Leonid meteor spectrum captured in a 182 cm telescope?     p. 639
T. Kasuga, T. Iijima, and J. Watanabe
DOI: http://dx.doi.org/10.1051/0004-6361:20077396
Abstract | Full HTML | PDF (392.3 KB) | PS (231.1 KB) | References | Online Material | NASA ADS Abstract Service

The HARPS search for southern extra-solar planets - XII. A giant planet orbiting the metal-poor star HD 171028     p. 647
N. C. Santos, M. Mayor, F. Bouchy, F. Pepe, D. Queloz, and S. Udry
DOI: http://dx.doi.org/10.1051/0004-6361:20078129
Abstract | Full HTML | PDF (136.0 KB) | PS (75.21 KB) | References | NASA ADS Abstract Service


-  Celestial mechanics and astrometry
Validation of the new Hipparcos reduction     p. 653
F. van Leeuwen
DOI: http://dx.doi.org/10.1051/0004-6361:20078357
Abstract | Full HTML | PDF (1.649 MB) | PS (251.3 KB) | References | NASA ADS Abstract Service

On comparison and combination of catalogues of radio source positions     p. 665
Ju. Sokolova and Z. Malkin
DOI: http://dx.doi.org/10.1051/0004-6361:20077450
Abstract | Full HTML | PDF (475.2 KB) | PS (1.144 MB) | References | NASA ADS Abstract Service


-  Astronomical instrumentation
Optimization of apodized pupil Lyot coronagraph for ELTs     p. 671
P. Martinez, A. Boccaletti, M. Kasper, P. Baudoz, and C. Cavarroc
DOI: http://dx.doi.org/10.1051/0004-6361:20077708
Abstract | Full HTML | PDF (420.9 KB) | PS (433.6 KB) | References | NASA ADS Abstract Service

The On The Fly imaging technique     p. 679
J. G. Mangum, D. T. Emerson, and E. W. Greisen
DOI: http://dx.doi.org/10.1051/0004-6361:20077811
Abstract | Full HTML | PDF (902.8 KB) | PS (3.752 MB) | References | NASA ADS Abstract Service