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Astronomy and Astrophysics

Vol. 430, No. 2 (February I 2005)

12CO map of the Orion-Monoceros molecular clouds (Wilson, B. A., et al., p. 525)
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-  Letters
The Wide Field Imager Lyman-Alpha Search (WFILAS) for galaxies at redshift ~5.7 - I. A spatially compact Lyα emitting galaxy at redshift 5.721     p. L21
E. Westra, D. Heath Jones, C. E. Lidman, R. M. Athreya, K. Meisenheimer, C. Wolf, T. Szeifert, E. Pompei, and L. Vanzi
DOI: http://dx.doi.org/10.1051/0004-6361:200400126
Abstract | Full HTML | PDF (904 KB) | PS (2.34 MB) | References | SIMBAD record | NASA ADS Abstract Service

Discovery of two M 32 twins in Abell 1689     p. L25
S. Mieske, L. Infante, M. Hilker, G. Hertling, J. P. Blakeslee, N. Benítez, H. Ford, and K. Zekser
DOI: http://dx.doi.org/10.1051/0004-6361:200400119
Abstract | Full HTML | PDF (555 KB) | PS (742 KB) | References | SIMBAD record | NASA ADS Abstract Service

The effect of metastable level populations on the ionization fraction of Li-like ions     p. L29
J. G. Doyle, H. P. Summers, and P. Bryans
DOI: http://dx.doi.org/10.1051/0004-6361:200400125
Abstract | Full HTML | PDF (205 KB) | PS (262 KB) | References | NASA ADS Abstract Service

X-ray tomography of a cometary bow shock     p. L33
R. Wegmann, and K. Dennerl
DOI: http://dx.doi.org/10.1051/0004-6361:200400124
Abstract | Full HTML | PDF (360 KB) | PS (425 KB) | References | NASA ADS Abstract Service

A dual origin for Neptune's carbon monoxide?     p. L37
E. Lellouch, R. Moreno, and G. Paubert
DOI: http://dx.doi.org/10.1051/0004-6361:200400127
Abstract | Full HTML | PDF (402 KB) | PS (1.14 MB) | References | NASA ADS Abstract Service

The ionization structure of early-B supergiant winds     p. L41
R. K. Prinja, D. Massa, and S. C. Searle
DOI: http://dx.doi.org/10.1051/0004-6361:200400129
Abstract | Full HTML | PDF (301 KB) | PS (284 KB) | References | SIMBAD record | NASA ADS Abstract Service

XMM-Newton detection of type I X-ray bursts in M 31     p. L45
W. Pietsch, and F. Haberl
DOI: http://dx.doi.org/10.1051/0004-6361:200400128
Abstract | Full HTML | PDF (240 KB) | PS (665 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Cosmology (including clusters of galaxies)
An XMM-Newton observation of A3921: An off-axis merger     p. 385
E. Belsole, J.-L. Sauvageot, G. W. Pratt, and H. Bourdin
DOI: http://dx.doi.org/10.1051/0004-6361:20041275
Abstract | Full HTML | PDF (1.01 MB) | PS (1.09 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Geometrical constraints on dark energy     p. 399
A. K. D. Evans , I. K. Wehus , Ø. Grøn , and Ø. Elgarøy 
DOI: http://dx.doi.org/10.1051/0004-6361:20041590
Abstract | Full HTML | PDF (453 KB) | PS (192 KB) | References | NASA ADS Abstract Service


-  Extragalactic astronomy
The structure of elliptical galaxies in the Virgo cluster. Results from the INT Wide Field Survey     p. 411
G. Gavazzi, A. Donati, O. Cucciati, S. Sabatini, A. Boselli, J. Davies, and S. Zibetti
DOI: http://dx.doi.org/10.1051/0004-6361:20034571
Abstract | Full HTML | PDF (3.28 MB) | PS (1.41 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Reddening map of the Large Magellanic Cloud bar region     p. 421
A. Subramaniam
DOI: http://dx.doi.org/10.1051/0004-6361:20041279
Abstract | Full HTML | PDF (574 KB) | PS (308 KB) | References | SIMBAD record | NASA ADS Abstract Service

A submillimeter exponential disk in M 51: Evidence for an extended cold dust disk     p. 427
R. Meijerink, R. P. J. Tilanus, C. P. Dullemond, F. P. Israel, and P. P. van der Werf
DOI: http://dx.doi.org/10.1051/0004-6361:20040469
Abstract | Full HTML | PDF (345 KB) | PS (330 KB) | References | SIMBAD record | NASA ADS Abstract Service

X-ray to UV variability correlation in MCG–6-30-15     p. 435
P. Arévalo, I. Papadakis, B. Kuhlbrodt, and W. Brinkmann
DOI: http://dx.doi.org/10.1051/0004-6361:20041801
Abstract | Full HTML | PDF (517 KB) | PS (249 KB) | References | SIMBAD record | NASA ADS Abstract Service

The evolution of HCG 31: Optical and high-resolution HI study     p. 443
L. Verdes-Montenegro, A. Del Olmo, M. S. Yun, and J. Perea
DOI: http://dx.doi.org/10.1051/0004-6361:20047084
Abstract | Full HTML | PDF (2.25 MB) | PS (16.2 MB) | References | SIMBAD record | NASA ADS Abstract Service

Decay properties of the X-ray afterglows of gamma-ray bursts     p. 465
B. Gendre, and M. Boër
DOI: http://dx.doi.org/10.1051/0004-6361:20042031
Abstract | Full HTML | PDF (183 KB) | PS (66.0 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  Galactic structure, stellar clusters and populations
Revisiting the area of the open cluster Stock 16     p. 471
R. A. Vázquez, G. L. Baume, C. Feinstein, J. A. Nuñez, and M. M. Vergne
DOI: http://dx.doi.org/10.1051/0004-6361:20041089
Abstract | Full HTML | PDF (1.51 MB) | PS (2.47 MB) | References | SIMBAD record | NASA ADS Abstract Service

Massive star formation in the W49 giant molecular cloud: Implications for the formation of massive star clusters     p. 481
N. L. Homeier, and J. Alves
DOI: http://dx.doi.org/10.1051/0004-6361:20040447
Abstract | Full HTML | PDF (2.37 MB) | PS (6.96 MB) | References | SIMBAD record | NASA ADS Abstract Service

Quantifying the uncertainties of chemical evolution studies - I. Stellar lifetimes and initial mass function     p. 491
D. Romano, C. Chiappini, F. Matteucci, and M. Tosi
DOI: http://dx.doi.org/10.1051/0004-6361:20048222
Abstract | Full HTML | PDF (604 KB) | PS (209 KB) | References | NASA ADS Abstract Service

Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing     p. 507
E. Arnone, S. G. Ryan, D. Argast, J. E. Norris, and T. C. Beers
DOI: http://dx.doi.org/10.1051/0004-6361:20041034
Abstract | Full HTML | PDF (316 KB) | PS (103 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service


-  Interstellar and circumstellar matter
A uniform CO survey of the molecular clouds in Orion and Monoceros     p. 523
B. A. Wilson, T. M. Dame, M. R. W. Masheder, and P. Thaddeus
DOI: http://dx.doi.org/10.1051/0004-6361:20035943
Abstract | Full HTML | PDF (2.30 MB) | PS (1.63 MB) | References | SIMBAD record | NASA ADS Abstract Service

The ionizing star of the North America and Pelican nebulae     p. 541
F. Comerón, and A. Pasquali
DOI: http://dx.doi.org/10.1051/0004-6361:20041788
Abstract | Full HTML | PDF (746 KB) | PS (793 KB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

The interstellar C18O/C17O ratio in the solar neighbourhood: The ρ Ophiuchus cloud     p. 549
J. G. A. Wouterloot, J. Brand, and C. Henkel
DOI: http://dx.doi.org/10.1051/0004-6361:20040437
Abstract | Full HTML | PDF (671 KB) | PS (478 KB) | References | SIMBAD record | NASA ADS Abstract Service

An alternate estimate of the mass of dust in Cassiopeia A     p. 561
T. L. Wilson, and W. Batrla
DOI: http://dx.doi.org/10.1051/0004-6361:20041220
Abstract | Full HTML | PDF (562 KB) | PS (1.05 MB) | References | SIMBAD record | NASA ADS Abstract Service

Cosmic ray moderation of the thermal instability     p. 567
A. Y. Wagner, S. A. E. G. Falle, T. W. Hartquist, and J. M. Pittard
DOI: http://dx.doi.org/10.1051/0004-6361:20042138
Abstract | Full HTML | PDF (99.1 KB) | PS (26.6 KB) | References | NASA ADS Abstract Service


-  Stellar structure and evolution
Seismic constraints on open clusters     p. 571
L. Piau, J. Ballot, and S. Turck-Chièze
DOI: http://dx.doi.org/10.1051/0004-6361:20041405
Abstract | Full HTML | PDF (389 KB) | PS (163 KB) | References | SIMBAD record | NASA ADS Abstract Service

Type Ia Supernova models arising from different distributions of igniting points     p. 585
D. García-Senz, and E. Bravo
DOI: http://dx.doi.org/10.1051/0004-6361:20041628
Abstract | Full HTML | PDF (1.35 MB) | PS (1.44 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

Variable stars in the bar of the Large Magellanic Cloud: The photometric catalogue     p. 603
L. Di Fabrizio, G. Clementini, M. Maio, A. Bragaglia, E. Carretta, R. Gratton, P. Montegriffo, and M. Zoccali
DOI: http://dx.doi.org/10.1051/0004-6361:20041659
Abstract | Full HTML | PDF (2.47 MB) | PS (3.44 MB) | References | Online Material | SIMBAD record | NASA ADS Abstract Service

HS 2331+3905: The cataclysmic variable that has it all     p. 629
S. Araujo-Betancor, B. T. Gänsicke, H.-J. Hagen, T. R. Marsh, E. T. Harlaftis, J. Thorstensen, R. E. Fried, P. Schmeer, and D. Engels
DOI: http://dx.doi.org/10.1051/0004-6361:20041736
Abstract | Full HTML | PDF (1.93 MB) | PS (1.21 MB) | References | SIMBAD record | NASA ADS Abstract Service


-  Stellar atmospheres
Model atmospheres and X-ray spectra of bursting neutron stars - II. Iron rich comptonized spectra     p. 643
A. Majczyna, J. Madej, P. C. Joss, and A. Różańska
DOI: http://dx.doi.org/10.1051/0004-6361:20034048
Abstract | Full HTML | PDF (356 KB) | PS (131 KB) | References | SIMBAD record | NASA ADS Abstract Service

First stars VI – Abundances of C, N, O, Li, and mixing in extremely metal-poor giants. Galactic evolution of the light elements     p. 655
M. Spite et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20041274
Abstract | Full HTML | PDF (447 KB) | PS (137 KB) | References | SIMBAD record | NASA ADS Abstract Service

The Ca II Infrared Triplet as a stellar activity diagnostic - I. Non-LTE photospheric profiles and definition of the RIRT indicator     p. 669
V. Andretta, I. Busà, M. T. Gomez, and L. Terranegra
DOI: http://dx.doi.org/10.1051/0004-6361:20041745
Abstract | Full HTML | PDF (372 KB) | PS (141 KB) | References | SIMBAD record | NASA ADS Abstract Service


-  The Sun
Non-LTE diagnostics of velocity fields during the gradual phase of a solar flare     p. 679
A. Berlicki, P. Heinzel, B. Schmieder, P. Mein, and N. Mein
DOI: http://dx.doi.org/10.1051/0004-6361:20041293
Abstract | Full HTML | PDF (970 KB) | PS (2.42 MB) | References | NASA ADS Abstract Service

Radiative properties of magnetic elements - II. Center to limb variation of the appearance of photospheric faculae     p. 691
O. Steiner
DOI: http://dx.doi.org/10.1051/0004-6361:20041286
Abstract | Full HTML | PDF (522 KB) | PS (405 KB) | References | NASA ADS Abstract Service

Streamers and adjacent regions observed by UVCS/SOHO: A comparison between different phases of solar activity     p. 701
R. Ventura, D. Spadaro, G. Cimino, and M. Romoli
DOI: http://dx.doi.org/10.1051/0004-6361:20041770
Abstract | Full HTML | PDF (701 KB) | PS (1.59 MB) | References | NASA ADS Abstract Service


-  Celestial mechanics and astrometry
Three-dimensional periodic motion in the vicinity of the equilibrium points of an asteroid     p. 713
O. Vasilkova
DOI: http://dx.doi.org/10.1051/0004-6361:20034414
Abstract | Full HTML | PDF (547 KB) | PS (657 KB) | References | NASA ADS Abstract Service


-  Atomic, molecular and nuclear data
Effective collision strengths for fine-structure transitions for the electron impact excitation of N II     p. 725
C. E. Hudson, and K. L. Bell
DOI: http://dx.doi.org/10.1051/0004-6361:20041969
Abstract | Full HTML | PDF (142 KB) | PS (42.4 KB) | References | NASA ADS Abstract Service


-  Instruments, observational techniques, and data processing
Restoration of interferometric images - III. Efficient Richardson-Lucy methods for LINC-NIRVANA data reduction     p. 731
B. Anconelli, M. Bertero, P. Boccacci, M. Carbillet, and H. Lanteri
DOI: http://dx.doi.org/10.1051/0004-6361:20041493
Abstract | Full HTML | PDF (381 KB) | PS (389 KB) | References | SIMBAD record | NASA ADS Abstract Service

An analysis of temperatures and wind speeds above Dome C, Antarctica     p. 739
E. Aristidi et al.
DOI: http://dx.doi.org/10.1051/0004-6361:20041876
Abstract | Full HTML | PDF (554 KB) | PS (1.08 MB) | References | NASA ADS Abstract Service

On the purity of Be II measurements     p. 747
R. E. Griffin
DOI: http://dx.doi.org/10.1051/0004-6361:20042069
Abstract | Full HTML | PDF (300 KB) | PS (83.5 KB) | References | NASA ADS Abstract Service


-  On-line catalogs and data
A catalog of LEDA galaxies with DENIS measurements     p. 751
G. Paturel, I. Vauglin, C. Petit, J. Borsenberger, N. Epchtein, P. Fouqué, and G. Mamon
DOI: http://dx.doi.org/10.1051/0004-6361:20041162
Abstract | Full HTML | PDF (846 KB) | PS (528 KB) | References | NASA ADS Abstract Service