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Astronomy & Astrophysics

Volume 371 / No 2 (May IV 2001)

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Cosmology (including clusters of galaxies)

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Dust-penetrated morphology in the high-redshift universe: Clues from NGC 922 p. 393

D. L. Block, I. Puerari, M. Takamiya, R. Abraham, A. Stockton, I. Robson and W. Holland

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010081

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On the metallicities of UM 133, UM 283 and UM 382 p. 404

A. Y. Kniazev, S. A. Pustilnik, A. V. Ugryumov and A. G. Pramsky

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010277

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The M 31 double nucleus probed with OASIS and HST - A natural = 1 mode? p. 409

R. Bacon, E. Emsellem, F. Combes, Y. Copin, G. Monnet and P. Martin

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010317

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Research Note Is SBS 0335-052 a young galaxy? p. 429

G. Östlin and D. Kunth

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010326

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CI and CO in the spiral galaxies NGC 6946 and M 83 p. 433

F. P. Israel and F. Baas

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010354

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The new sample of Giant radio sources - I. Radio imaging, optical identification and spectroscopy of selected candidates p. 445

J. Machalski, M. Jamrozy and S. Zola

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010352

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Dark haloes in Karachentsev's sample of binary galaxies p. 470

P. Teerikorpi

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010394

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Hydrodynamic simulations of the triaxial bulge of M 31 p. 476

S. Berman

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010391

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Tip of the red giant branch distance for the Sculptor group dwarf ESO 540-032 p. 487

H. Jerjen and M. Rejkuba

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010389

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A Catalog of OB Associations in the spiral galaxy NGC 300 p. 497

G. Pietrzyński, W. Gieren, P. Fouqué and F. Pont

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010401

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A two-phase model for the narrow line region of NGC 4151 p. 507

S. Komossa

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010404

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Extreme synchrotron BL Lac objects - Stretching the blazar sequence p. 512

L. Costamante, G. Ghisellini, P. Giommi, G. Tagliaferri, A. Celotti, M. Chiaberge, G. Fossati, L. Maraschi, F. Tavecchio, A. Treves and A. Wolter

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010412

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An X-ray selected sample of radio-loud quasars p. 527

A. Wolter and A. Celotti

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010415

Extragalactic astronomy

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Restoring the full velocity field in the gaseous disk of the spiral galaxy NGC 157 p. 538

A. M. Fridman, O. V. Khoruzhii, V. V. Lyakhovich, O. K. Sil'chenko, A. V. Zasov, V. L. Afanasiev, S. N. Dodonov and J. Boulesteix

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010392

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A search for faint galactic carbon stars from the First Byurakan Spectral Sky Survey. I. p. 560

K. Gigoyan, N. Mauron, M. Azzopardi, G. Muratorio and H. V. Abrahamyan

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010397

Galactic structure, stellar clusters, and populations

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Search for short-period variable stars in the open cluster NGC 2301 p. 571

S.-L. Kim, M.-Y. Chun, B.-G. Park, S. H. Lee, H. Sung, H. B. Ann, M. G. Lee, Y.-B. Jeon and I.-S. Yuk

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010403

Interstellar and circumstellar matter

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Empirical relations for cluster RR Lyrae stars revisited p. 579

G. Kovács and A. R. Walker

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010346

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Period -magnitude relationships in BVIJHK-bands for fundamental mode and first overtone Cepheids p. 592

I. Baraffe and Y. Alibert

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010360

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Spectroscopy of B-type emission-line stars with compact dusty envelopes: HD 85567, Hen 3-140, and Hen 3-1398 p. 600

A. S. Miroshnichenko, H. Levato, K. S. Bjorkman and M. Grosso

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010365

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SX Phœnicis stars in the core of 47 Tucanae p. 614

H. Bruntt, S. Frandsen, R. L. Gilliland, J. Christensen-Dalsgaard, J. O. Petersen, P. Guhathakurta, P. D. Edmonds and G. Bono

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010369

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The brightness variations and orbital period changes of RT Lacertae p. 626

C. İbanoǧlu, S. Evren, G. Taş, A. Devlen and Ö. Çakırlı

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010413

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Variability in the extreme helium star LSS 5121 p. 638

V. M. Woolf, R. Aznar Cuadrado, G. Pandey and C. S. Jeffery

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010378

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A representative sample of Be stars III: band spectroscopy p. 643

I. A. Steele and J. S. Clark

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010381

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The effect of stellar activity on the Li I 6708, Na I 5896 and K I 7699 Ålines - A comparison with the Pleiades, field stars and the Sun p. 652

D. Barrado y Navascués, R. J. García López, G. Severino and M. T. Gomez

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010409

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Period-doubling behavior in very slow classical cepheid models p. 667

T. Aikawa

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010430

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Research Note The 1584 day period in the Be Star LSI +61303 p. 672

K. M. V. Apparao

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010437

The Sun

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The Cygnus superbubble revisited p. 675

B. Uyanıker, E. Fürst, W. Reich, B. Aschenbach and R. Wielebinski

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010387

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The spin temperature of warm interstellar H I p. 698

H. Liszt

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010395

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The angular power spectrum of radio emission at 2.3 GHz p. 708

G. Giardino, A. J. Banday, P. Fosalba, K. M. Górski, J. L. Jonas, W. O'Mullane and J. Tauber

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010384

Planets and planetary systems

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Dynamical variations of the differential rotation in the solar convection zone p. 718

E. Covas, R. Tavakol and D. Moss

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010345

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Submergence of magnetic flux in interaction of sunspot groups p. 731

B. Kálmán

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010429

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The relation between cyclotron heating and energetic particles on open coronal field lines p. 738

R. Vainio and T. Laitinen

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010411

Celestial mechanics and astrometry

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CCD photometry, spin and shape model of the asteroid 1572 Posnania p. 748

T. Michałowski, W. Pych, T. Kwiatkowski, A. Kryszczyńska, P. Pravec, W. Borczyk, A. Erikson, W. Wisniewski, F. Colas and J. Berthier

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010372

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Photometric study of Centaurs 10199 Chariklo (1997 CU) and 1999 UG p. 753

N. Peixinho, P. Lacerda, J. L. Ortiz, A. Doressoundiram, M. RoosSerote and P. J. Gutiérrez

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010382

Atomic, molecular, and nuclear data

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Progress in the determination of some astronomical constants from radiometric observations of planets and spacecraft p. 760

E. V. Pitjeva

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010399

Numerical methods and codes

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Space-VLBI phase-reference mapping and astrometry p. 766

J. C. Guirado, E. Ros, D. L. Jones, J.-F. Lestrade, J. M. Marcaide, M. A. Pérez-Torres and R. A. Preston

Published online: 15 May 2001

DOI: https://doi.org/10.1051/0004-6361:20010370