Astronomy & Astrophysics (A&A)

Letters

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400126

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400119

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400125

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X-ray tomography of a cometary bow shock p. L33

R. Wegmann and K. Dennerl

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400124

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A dual origin for Neptune's carbon monoxide? p. L37

E. Lellouch, R. Moreno and G. Paubert

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400127

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The ionization structure of early-B supergiant winds p. L41

R. K. Prinja, D. Massa and S. C. Searle

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400129

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XMM-Newton detection of type I X-ray bursts in M 31 p. L45

W. Pietsch and F. Haberl

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:200400128

Cosmology (including clusters of galaxies)

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An XMM-Newton observation of A3921: An off-axis merger p. 385

E. Belsole, J.-L. Sauvageot, G. W. Pratt and H. Bourdin

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041275

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Geometrical constraints on dark energy p. 399

A. K. D. Evans, I. K. Wehus, Ø. Grøn and Ø. Elgarøy

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041590

Extragalactic astronomy

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20034571

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Reddening map of the Large Magellanic Cloud bar region p. 421

A. Subramaniam

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041279

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20040469

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X-ray to UV variability correlation in MCG–6-30-15 p. 435

P. Arévalo, I. Papadakis, B. Kuhlbrodt and W. Brinkmann

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041801

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20047084

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Decay properties of the X-ray afterglows of gamma-ray bursts p. 465

B. Gendre and M. Boër

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20042031

Galactic structure, stellar clusters, and populations

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041089

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20040447

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20048222

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041034

Interstellar and circumstellar matter

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20035943

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The ionizing star of the North America and Pelican nebulae p. 541

F. Comerón and A. Pasquali

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041788

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The interstellar CO/CO ratio in the solar neighbourhood: The ρ Ophiuchus cloud p. 549

J. G. A. Wouterloot, J. Brand and C. Henkel

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20040437

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An alternate estimate of the mass of dust in Cassiopeia A p. 561

T. L. Wilson and W. Batrla

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041220

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Cosmic ray moderation of the thermal instability p. 567

A. Y. Wagner, S. A. E. G. Falle, T. W. Hartquist and J. M. Pittard

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20042138

Stellar structure and evolution

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Seismic constraints on open clusters p. 571

L. Piau, J. Ballot and S. Turck-Chièze

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041405

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Type Ia Supernova models arising from different distributions of igniting points p. 585

D. García-Senz and E. Bravo

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041628

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041659

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041736

Stellar atmospheres

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20034048

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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, R. Cayrel, B. Plez, V. Hill, F. Spite, E. Depagne, P. François, P. Bonifacio, B. Barbuy, T. Beers et al. (4 more)

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041274

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The Ca II Infrared Triplet as a stellar activity diagnostic - I. Non-LTE photospheric profiles and definition of the R indicator p. 669

V. Andretta, I. Busà, M. T. Gomez and L. Terranegra

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041745

The Sun

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041293

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Radiative properties of magnetic elements - II. Center to limb variation of the appearance of photospheric faculae p. 691

O. Steiner

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041286

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041770

Celestial mechanics and astrometry

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Three-dimensional periodic motion in the vicinity of the equilibrium points of an asteroid p. 713

O. Vasilkova

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20034414

Atomic, molecular, and nuclear data

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Effective collision strengths for fine-structure transitions for the electron impact excitation of N II p. 725

C. E. Hudson and K. L. Bell

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041969

Astronomical instrumentation

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041493

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An analysis of temperatures and wind speeds above Dome C, Antarctica p. 739

E. Aristidi, K. Agabi, M. Azouit, E. Fossat, J. Vernin, T. Travouillon, J. S. Lawrence, C. Meyer, J. W. V. Storey, B. Halter et al. (2 more)

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041876

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On the purity of Be II measurements p. 747

R. E. Griffin

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20042069

Catalogs and data

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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

Published online: 20 January 2005

DOI: https://doi.org/10.1051/0004-6361:20041162

Astronomy & Astrophysics

Volume 430 / No 2 (February I 2005)

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

Discovery of two M 32 twins in Abell 1689 p. L25

The effect of metastable level populations on the ionization fraction of Li-like ions p. L29

X-ray tomography of a cometary bow shock p. L33

A dual origin for Neptune's carbon monoxide? p. L37

The ionization structure of early-B supergiant winds p. L41

XMM-Newton detection of type I X-ray bursts in M 31 p. L45

Cosmology (including clusters of galaxies)

An XMM-Newton observation of A3921: An off-axis merger p. 385

Geometrical constraints on dark energy p. 399

Extragalactic astronomy

The structure of elliptical galaxies in the Virgo cluster. Results from the INT Wide Field Survey p. 411

Reddening map of the Large Magellanic Cloud bar region p. 421

A submillimeter exponential disk in M 51: Evidence for an extended cold dust disk p. 427

X-ray to UV variability correlation in MCG–6-30-15 p. 435

The evolution of HCG 31: Optical and high-resolution HI study p. 443

Decay properties of the X-ray afterglows of gamma-ray bursts p. 465

Galactic structure, stellar clusters, and populations

Revisiting the area of the open cluster Stock 16 p. 471

Massive star formation in the W49 giant molecular cloud: Implications for the formation of massive star clusters p. 481

Quantifying the uncertainties of chemical evolution studies - I. Stellar lifetimes and initial mass function p. 491

Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing p. 507

Interstellar and circumstellar matter

A uniform CO survey of the molecular clouds in Orion and Monoceros p. 523

The ionizing star of the North America and Pelican nebulae p. 541

The interstellar CO/CO ratio in the solar neighbourhood: The ρ Ophiuchus cloud p. 549

An alternate estimate of the mass of dust in Cassiopeia A p. 561

Cosmic ray moderation of the thermal instability p. 567

Stellar structure and evolution

Seismic constraints on open clusters p. 571

Type Ia Supernova models arising from different distributions of igniting points p. 585

Variable stars in the bar of the Large Magellanic Cloud: The photometric catalogue p. 603

HS 2331+3905: The cataclysmic variable that has it all p. 629

Stellar atmospheres

Model atmospheres and X-ray spectra of bursting neutron stars - II. Iron rich comptonized spectra p. 643

First stars VI – Abundances of C, N, O, Li, and mixing in extremely metal-poor giants. Galactic evolution of the light elements p. 655

The Ca II Infrared Triplet as a stellar activity diagnostic - I. Non-LTE photospheric profiles and definition of the R indicator p. 669

The Sun

Non-LTE diagnostics of velocity fields during the gradual phase of a solar flare p. 679

Radiative properties of magnetic elements - II. Center to limb variation of the appearance of photospheric faculae p. 691

Streamers and adjacent regions observed by UVCS/SOHO: A comparison between different phases of solar activity p. 701

Celestial mechanics and astrometry

Three-dimensional periodic motion in the vicinity of the equilibrium points of an asteroid p. 713

Atomic, molecular, and nuclear data

Effective collision strengths for fine-structure transitions for the electron impact excitation of N II p. 725

Astronomical instrumentation

Restoration of interferometric images - III. Efficient Richardson-Lucy methods for LINC-NIRVANA data reduction p. 731

An analysis of temperatures and wind speeds above Dome C, Antarctica p. 739

On the purity of Be II measurements p. 747

Catalogs and data

A catalog of LEDA galaxies with DENIS measurements p. 751