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Astronomy and Astrophysics

Vol. 377, No. 3 (October III 2001)

Fallen trees in the devastated region of the 1908 Tunguska event (photograph by Leonid Kulik, 1928), (Farinella, P., et al., p. 1083)

- Letters

- Extragalactic astronomy

The velocity field of UGC 6697 revisited p. 745
G. Gavazzi, M. Marcelin, A. Boselli, P. Amram, J. M. Vílchez, J. Iglesias-Paramo, and M. Tarenghi
DOI: http://dx.doi.org/10.1051/0004-6361:20010991
Abstract | Full HTML | PDF (890 KB) | PS (4.94 MB) | References | SIMBAD record | NASA ADS Abstract Service

The ROSAT deep survey - VII. RX J105343+5735: A massive cluster at z= 1.263 p. 778
D. Thompson, L. Pozzetti, G. Hasinger, I. Lehmann, M. Schmidt, B. T. Soifer, G. Szokoly, G. Wilson, and G. Zamorani
DOI: http://dx.doi.org/10.1051/0004-6361:20011049
Abstract | Full HTML | PDF (198 KB) | PS (476 KB) | References | SIMBAD record | NASA ADS Abstract Service

Planetary nebulae as mass tracers of their parent galaxies: Biases in the estimate of the kinematical quantities p. 784
N. R. Napolitano, M. Arnaboldi, K. C. Freeman, and M. Capaccioli
DOI: http://dx.doi.org/10.1051/0004-6361:20011106
Abstract | Full HTML | PDF (604 KB) | PS (540 KB) | References | SIMBAD record | NASA ADS Abstract Service

Where is the neutral atomic gas in Hickson groups? p. 812
L. Verdes-Montenegro, M. S. Yun, B. A. Williams, W. K. Huchtmeier, A. Del Olmo, and J. Perea
DOI: http://dx.doi.org/10.1051/0004-6361:20011127
Abstract | Full HTML | PDF (573 KB) | PS (2.04 MB) | References | SIMBAD record | NASA ADS Abstract Service

Are the hotspots of radio galaxies the sites of in situ acceleration of relativistic particles? p. 827
Gopal-Krishna, P. Subramanian, P. J. Wiita, and P. A. Becker
DOI: http://dx.doi.org/10.1051/0004-6361:20011149
Abstract | Full HTML | PDF (190 KB) | PS (175 KB) | References | SIMBAD record | NASA ADS Abstract Service

Radial B-V/V-K color gradients, extinction-free Q_BVK combined color indices, and the history of star formation of the Cartwheel ring galaxy p. 835
E. I. Vorobyov, and D. Bizyaev
DOI: http://dx.doi.org/10.1051/0004-6361:20011163
Abstract | Full HTML | PDF (328 KB) | PS (282 KB) | References | SIMBAD record | NASA ADS Abstract Service

- Stellar clusters and associations

Reddening and age for 13 southern Galactic open clusters determined from integrated spectra p. 845
A. V. Ahumada, J. J. Clariá, E. Bica, C. M. Dutra, and M. C. Torres
DOI: http://dx.doi.org/10.1051/0004-6361:20011133
Abstract | Full HTML | PDF (401 KB) | PS (205 KB) | References | SIMBAD record | NASA ADS Abstract Service

- Formation, structure and evolution of stars

The pre-main-sequence star IP Persei p. 854
A. S. Miroshnichenko, K. S. Bjorkman, E. L. Chentsov, V. G. Klochkova, R. O. Gray, P. García-Lario, and J. V. Perea Calderón
DOI: http://dx.doi.org/10.1051/0004-6361:20010958
Abstract | Full HTML | PDF (390 KB) | PS (444 KB) | References | SIMBAD record | NASA ADS Abstract Service

Mass, linear momentum and kinetic energy of bipolar flows in protoplanetary nebulae p. 868
V. Bujarrabal, A. Castro-Carrizo, J. Alcolea, and C. Sánchez Contreras
DOI: http://dx.doi.org/10.1051/0004-6361:20011090
Abstract | Full HTML | PDF (612 KB) | PS (499 KB) | References | SIMBAD record | NASA ADS Abstract Service

Variability and spectral classification of LMC giants: Results from DENIS and EROS p. 945
M.-R. L. Cioni, J.-B. Marquette, C. Loup, M. Azzopardi, H. J. Habing, T. Lasserre, and E. Lesquoy
DOI: http://dx.doi.org/10.1051/0004-6361:20011143
Abstract | Full HTML | PDF (518 KB) | PS (373 KB) | References | Tables at CDS | SIMBAD record | NASA ADS Abstract Service

An inverse Compton scattering (ICS) model of pulsar emission - II. Frequency behavior of pulse profiles p. 964
G. J. Qiao, J. F. Liu, B. Zhang, and J. L. Han
DOI: http://dx.doi.org/10.1051/0004-6361:20011188
Abstract | Full HTML | PDF (348 KB) | PS (392 KB) | References | SIMBAD record | NASA ADS Abstract Service

- Stellar atmospheres

Direct multi-wavelength limb-darkening measurements of three late-type giants with the Navy Prototype Optical Interferometer p. 981
M. Wittkowski, C. A. Hummel, K. J. Johnston, D. Mozurkewich, A. R. Hajian, and N. M. White
DOI: http://dx.doi.org/10.1051/0004-6361:20011124
Abstract | Full HTML | PDF (598 KB) | PS (319 KB) | References | SIMBAD record | NASA ADS Abstract Service

- Diffuse matter in space

A study of the kinematics of the H₂O maser sources S269 and W75S from long-term monitoring p. 999
E. E. Lekht, N. A. Silant'ev, J. E. Mendoza-Torres, M. I. Pashchenko, and V. V. Krasnov
DOI: http://dx.doi.org/10.1051/0004-6361:20011069
Abstract | Full HTML | PDF (324 KB) | PS (239 KB) | References | SIMBAD record | NASA ADS Abstract Service

- The Sun

MHD consistent cellular automata (CA) models - II. Applications to solar flares p. 1068
H. Isliker, A. Anastasiadis, and L. Vlahos
DOI: http://dx.doi.org/10.1051/0004-6361:20011100
Abstract | Full HTML | PDF (457 KB) | PS (461 KB) | References | NASA ADS Abstract Service

- The solar system

Probable asteroidal origin of the Tunguska Cosmic Body p. 1081
P. Farinella, L. Foschini, Ch. Froeschlé, R. Gonczi, T. J. Jopek, G. Longo, and P. Michel
DOI: http://dx.doi.org/10.1051/0004-6361:20011054
Abstract | Full HTML | PDF (2.36 MB) | PS (948 KB) | References | NASA ADS Abstract Service

- Instruments, observational techniques and data processing

Two dual-wavelength sequences of high-resolution solar photospheric images captured over several hours and restored by use of phase diversity p. 1128
M. G. Löfdahl, T. E. Berger, and J. H. Seldin
DOI: http://dx.doi.org/10.1051/0004-6361:20011118
Abstract | Full HTML | PDF (520 KB) | PS (2.72 MB) | References | NASA ADS Abstract Service

- Computational methods