Astronomy & Astrophysics

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A&A Vol. 371 No. 1

	Astronomy and Astrophysics
	Vol. 371 No. 1 (May III 2001)
Cover illustration: Deconvolved image of PG1700+514 obtained with AO at CFHT (FWHM=0.16")(Màrquez, I., et al., p. 100)

Letters

Short term variability of Centaur 1999 UG $\mathsf}$ p. L1
P. J. Gutiérrez, J. L. Ortiz, E. Alexandrino, M. Roos-Serote and A. Doressoundiram
Abstract | References | Full HTML | PDF file (148 KB) | PS file (246 KB)

Cosmology

Incompatibility of a comoving Ly $\alpha$ forest with supernova-Ia luminosity distances p. 1
J. Thomas and H. Schulz
Abstract | References | Full HTML | PDF file (167 KB) | PS file (170 KB)

Central matter distributions in rich clusters of galaxies from ${z\sim$ to ${z\sim }$ p. 11
C. Adami, A. Mazure, M. P. Ulmer and C. Savine
Abstract | References | Full HTML | PDF file (134 KB) | PS file (140 KB)

New light on the baryon fraction in galaxy clusters p. 19
R. Sadat and A. Blanchard
Abstract | References | Full HTML | PDF file (147 KB) | PS file (134 KB)

Extragalactic astronomy

The nucleus of the nearby galaxy IC 342 p. 25
A. Schulz, R. Güsten, B. Köster and D. Krause
Abstract | References | Full HTML | PDF file (278 KB) | PS file (793 KB)

A new population of soft X-ray weak quasars p. 37
G. Risaliti, A. Marconi, R. Maiolino, M. Salvati and P. Severgnini
Abstract | References | Full HTML | PDF file (233 KB) | PS file (270 KB)

The mysterious H I deficiency of NGC 3175 p. 45
M. Dahlem, M. Ehle and S. D. Ryder
Abstract | References | Full HTML | PDF file (373 KB) | PS file (358 KB)

The host galaxy and optical light curve of the gamma-ray burst GRB 980703 p. 52
S. Holland, J. P. U. Fynbo, J. Hjorth, J. Gorosabel, H. Pedersen, M. I. Andersen, A. Dar, B. Thomsen, P. Møller, G. Björnsson, A. O. Jaunsen, P. Natarajan and N. Tanvir
Abstract | References | Full HTML | PDF file (321 KB) | PS file (256 KB)

On the hadronic beam model of TeV $\mathsf{\gamma}$ -ray flares from blazars p. 61
D. Purmohammad and J. Samimi
Abstract | References | Full HTML | PDF file (164 KB) | PS file (163 KB)

A new approach to the problem of modes in the Mestel disk p. 68
M. Demleitner and B. Fuchs
Abstract | References | Full HTML | PDF file (195 KB) | PS file (186 KB)

A spectroscopic and photometric study of short-timescale variability in NGC 5548 p. 79
M. Dietrich, C. F. Bender, D. J. Bergmann, T. E. Bills, N. G. Bochkarev, A. Burenkov, C. M. Gaskell, D. D. Gutzmer, R. Grove, M. E. Hiller, J. P. Huchra, E. S. Klimek, C. Lund, N. Merkulova, S. Pebley, M. A. Poulsen, V. I. Pronik, S. G. Sergeev, E. A. Sergeeva, A. I. Shapovalova, V. V. Vlasyuk and B. Wilkes
Abstract | References | Full HTML | PDF file (511 KB) | PS file (313 KB)

A new mechanism for soft X-ray excess in NGC 5548 p. 93
Tong-Sheng Xia and Jia-Lü Zhang
Abstract | References | Full HTML | PDF file (102 KB) | PS file (174 KB)

Adaptive optics imaging of low and intermediate redshift quasars p. 97
I. Márquez, P. Petitjean, B. Théodore, M. Bremer, G. Monnet and J.-L. Beuzit
Abstract | References | Full HTML | PDF file (593 KB) | PS file (2.04 MB)

Stellar clusters and associations

Star clusterings in the Carina complex: $\vec$ photometry of NGC 3324 and Loden 165 p. 107
G. Carraro, F. Patat and H. Baumgardt
Abstract | References | Full HTML | PDF file (296 KB) | PS file (374 KB)

The geometry of stellar motions in the nucleus region of the Ursa Major kinematic group p. 115
N. V. Chupina, V. G. Reva and S. V. Vereshchagin
Abstract | References | Full HTML | PDF file (200 KB) | PS file (167 KB)

A search for peculiar objects in young open clusters - II. A new Be star, the optical counterpart of IRAS 19564+3224 and a new open cluster in Vulpecula p. 123
S. Bernabei and V. F. Polcaro
Abstract | References | Full HTML | PDF file (509 KB) | PS file (705 KB)

Formation, structure and evolution of stars

Mineral formation in stellar winds - II. Effects of Mg/Si abundance variations on dust composition in AGB stars p. 133
A. S. Ferrarotti and H.-P. Gail
Abstract | References | Full HTML | PDF file (537 KB) | PS file (1.16 MB)

Zero-metallicity stars - I. Evolution at constant mass p. 152
P. Marigo, L. Girardi, C. Chiosi and P. R. Wood
Abstract | References | Full HTML | PDF file (937 KB) | PS file (478 KB)

On the determination of the light curve parameters of detached active binaries - I. The prototype RS Canum Venaticorum p. 174
M. Rodonò, A. F. Lanza and U. Becciani
Abstract | References | Full HTML | PDF file (322 KB) | PS file (209 KB)

A reconsideration of disk properties in Herbig Ae stars p. 186
A. Natta, T. Prusti, R. Neri, D. Wooden, V. P. Grinin and V. Mannings
Abstract | References | Full HTML | PDF file (452 KB) | PS file (301 KB)

A search for the optical counterpart to PSR B1821-24 in M 28 p. 198
A. Golden, R. F. Butler and A. Shearer
Abstract | References | Full HTML | PDF file (436 KB) | PS file (371 KB)

Origin of quasi-periodic shells in dust forming AGB winds p. 205
Y. J. W. Simis, V. Icke and C. Dominik
Abstract | References | Full HTML | PDF file (1.14 MB) | PS file (2.00 MB)

Reprocessing the Hipparcos data for evolved giant stars II. Absolute magnitudes for the R-type carbon stars p. 222
G. Knapp, D. Pourbaix and A. Jorissen
Abstract | References | Full HTML | PDF file (244 KB) | PS file (200 KB)

Bi-modal pulsation of the $\delta$ Scuti star V1821 Cygni p. 233
A.-Y. Zhou, Z.-L. Liu and B.-T. Du
Abstract | References | Full HTML | PDF file (667 KB) | PS file (324 KB)

Stellar atmospheres

An analytical MHD wind model with latitudinal dependences obtained using separation of the variables p. 240
J. J. G. Lima, E. R. Priest and K. Tsinganos
Abstract | References | Full HTML | PDF file (395 KB) | PS file (416 KB)

Formation and evolution of planetary systems

On orbital elements of extrasolar planetary candidates and spectroscopic binaries p. 250
T. F. Stepinski and D. C. Black
Abstract | References | Full HTML | PDF file (230 KB) | PS file (305 KB)

Search for spectroscopical signatures of transiting HD 209458b's exosphere p. 260
C. Moutou, A. Coustenis, J. Schneider, R. St Gilles, M. Mayor, D. Queloz and A. Kaufer
Abstract | References | Full HTML | PDF file (343 KB) | PS file (481 KB)

Diffuse matter in space

Thermal X-ray composites as an effect of projection p. 267
O. Petruk
Abstract | References | Full HTML | PDF file (287 KB) | PS file (277 KB)

Zeeman line splitting measurements sampling dense gas in dark cloud and star-forming cores p. 274
K. I. Uchida, D. Fiebig and R. Güsten
Abstract | References | Full HTML | PDF file (311 KB) | PS file (296 KB)

The kinematics of molecular clumps surrounding hot cores in G29.96 $\mathsf{-}$ 0.02 and G31.41 +0.31 p. 287
C. Maxia, L. Testi, R. Cesaroni and C. M. Walmsley
Abstract | References | Full HTML | PDF file (572 KB) | PS file (472 KB)

The peculiar supernova remnant CTB 80 p. 300
F. Mavromatakis, J. Ventura, E. V. Paleologou and J. Papamastorakis
Abstract | References | Full HTML | PDF file (764 KB) | PS file (1.35 MB)

ISOCAM 3-12 $\mu$ m imaging of five galactic compact HII regions p. 312
A. Zavagno and V. Ducci
Abstract | References | Full HTML | PDF file (1.71 MB) | PS file (10.9 MB)

The sun

Solar prominence magnetic configurations derived numerically from convection p. 328
I. McKaig
Abstract | References | Full HTML | PDF file (441 KB) | PS file (1.15 MB)

Spatial analysis of solar type III events associated with narrow band spikes at metric wavelengths p. 333
G. Paesold, A. O. Benz, K.-L. Klein and N. Vilmer
Abstract | References | Full HTML | PDF file (512 KB) | PS file (523 KB)

The solar system

The PHESAT95 catalogue of observations of the mutual events of the Saturnian satellites p. 343
W. Thuillot, J.-E. Arlot, C. Ruatti, J. Berthier, C. Blanco, F. Colas, W. Czech, M. Damani, V. D'Ambrosio, P. Descamps, G. Dourneau, N. Emelianov, S. Foglia, G. Helmer, T. R. Irsmambetova, N. James, P. Laques, J. Lecacheux, J.-F. Le Campion, C. Ledoux, J.-C. Le Floch, G. Oprescu, M. Rapaport, R. Riccioli, B. Starosta, V. G. Tejfel, E. M. Trunkovsky, B. Viateau, C. H. Veiga and D. T. Vu
Abstract | References | Full HTML | PDF file (190 KB) | PS file (142 KB)

Research Note: The Yarkovsky thermal force on small asteroids and their fragments - Choosing the right albedo p. 350
D. Vokrouhlický and W. F. Bottke Jr.
Abstract | References | Full HTML | PDF file (121 KB) | PS file (131 KB)

Atomic and molecular data

Stark broadening in O III spectrum p. 354
A. Sreckovic, M. S. Dimitrijevic and S. Djenize
Abstract | References | Full HTML | PDF file (154 KB) | PS file (235 KB)

The FERRUM project: Experimental f-values for 4p-5s transitions in Fe II p. 360
H. Karlsson, C. M. Sikström, S. Johansson, Z. S. Li and H. Lundberg
Abstract | References | Full HTML | PDF file (126 KB) | PS file (130 KB)

Instruments, observational techniques and data processing

SCIDAR measurements at Pic du Midi p. 366
J.-L. Prieur, G. Daigne and R. Avila
Abstract | References | Full HTML | PDF file (610 KB) | PS file (855 KB)

Statistics of the detection rates for tensor and scalar gravitational waves from the Local Galaxy universe p. 378
Yu. V. Baryshev and G. Paturel
Abstract | References | Full HTML | PDF file (2.18 MB) | PS file (468 KB)

Astronomy and Astrophysics