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Astronomy and Astrophysics
ISSN: 1432-0746

Table of Contents Volume 334 Number 2 (1998)


Letters to the Editor

Lensing galaxies: light or dark?
N. Jackson, P. Helbig, I. Browne, C.D. Fassnacht, L. Koopmans, D. Marlow, and P.N. Wilkinson
Astron. Astrophys. 334, P L33-L36 (1998).
Abstract
Article in HTML | PDF (114 KB) | (gzipped) PostScript (157 KB)

Planetary systems or double stars?
M. Imbert and L. Prévot
Astron. Astrophys. 334, P L37-L40 (1998).
Abstract
Article in HTML | PDF (104 KB) | (gzipped) PostScript (146 KB)

Detection of methyl radicals (CH3) on Saturn
B. Bézard, H. Feuchtgruber, J.I. Moses, and T. Encrenaz
Astron. Astrophys. 334, P L41-L44 (1998).
Abstract
Article in HTML | PDF (163 KB) | (gzipped) PostScript (174 KB)

HST observations of the QSO pair Q1026–0045A,B
Patrick Petitjean, Jean Surdej, Alain Smette, Peter Shaver, Jan Mücket, and Marc Remy
Astron. Astrophys. 334, P L45-L48 (1998).
Abstract
Article in HTML | PDF (242 KB) | (gzipped) PostScript (180 KB)

Is γ-ray absorption by induced electric fields important in the pulsar magnetospheres?
Zheng Zheng, Bing Zhang, and G.J. Qiao
Astron. Astrophys. 334, P L49-L52 (1998).
Abstract
Article in HTML | PDF (146 KB) | (gzipped) PostScript (171 KB)

Production and kinematics of sodium atoms in the coma of comet Hale-Bopp
C. Arpigny, H. Rauer, J. Manfroid, D. Hutsemékers, E. Jehin, J. Crovisier, and L. Jorda
Astron. Astrophys. 334, P L53-L56 (1998).
Abstract
Article in HTML | PDF (179 KB) | (gzipped) PostScript (179 KB)

Does the photospheric current take part in the flaring process?
V.I. Abramenko, V.B. Yurchishin, and V. Carbone
Astron. Astrophys. 334, P L57-L60 (1998).
Abstract
Article in HTML | PDF (157 KB) | (gzipped) PostScript (204 KB)

The spatial sodium distribution in the coma of comet Hale-Bopp (C/1995 O1)
H. Rauer, C. Arpigny, J. Manfroid, G. Cremonese, and C. Lemme
Astron. Astrophys. 334, P L61-L64 (1998).
Abstract
Article in HTML | PDF (172 KB) | (gzipped) PostScript (165 KB)

ROSAT archival observations of 1SAX J0054.9–7226 = 2E 0053.2–7242, a newly discovered X-ray pulsar in the SMC
G.L. Israel, S. Campana, G. Cusumano, F. Frontera, M. Orlandini, A. Santangelo, and L. Stella
Astron. Astrophys. 334, P L65-L68 (1998).
Abstract
Article in HTML | PDF (276 KB) | (gzipped) PostScript (213 KB)


Cosmology

Analytical relations concerning the collapse time in hierarchically clustered cosmological models
M. Gambera and A. Pagliaro
Astron. Astrophys. 334, P 381-387 (1998).
Abstract
Article in HTML | PDF (220 KB) | (gzipped) PostScript (165 KB)

Generation of magnetic seed fields in protogalactic clouds due to plasma-neutral gas friction
H. Wiechen, G.T. Birk, and H. Lesch
Astron. Astrophys. 334, P 388-394 (1998).
Abstract
Article in HTML | PDF (297 KB) | (gzipped) PostScript (216 KB)

The radial space distribution of KLUN-galaxies up to 200 Mpc: incompleteness or evidence for the behaviour predicted by fractal dimension  2?
P. Teerikorpi, M. Hanski, G. Theureau, Yu. Baryshev, G. Paturel, L. Bottinelli, and L. Gouguenheim
Astron. Astrophys. 334, P 395-403 (1998).
Abstract
Article in HTML | PDF (288 KB) | (gzipped) PostScript (177 KB)

The ESO Slice Project [ESP] galaxy redshift survey
V. Evidence for a D=3 sample dimensionality

R. Scaramella, L. Guzzo, G. Zamorani, E. Zucca, C. Balkowski, A. Blanchard, A. Cappi, V. Cayatte, G. Chincarini, C. Collins, A. Fiorani, D. Maccagni, H. MacGillivray, S. Maurogordato, R. Merighi, M. Mignoli, D. Proust, M. Ramella, G.M. Stirpe, and G. Vettolani
Astron. Astrophys. 334, P 404-408 (1998).
Abstract
Article in HTML | PDF (237 KB) | (gzipped) PostScript (267 KB)

Moving gravitational lenses: imprints on the cosmic microwave background
N. Aghanim, S. Prunet, O. Forni, and F.R. Bouchet
Astron. Astrophys. 334, P 409-419 (1998).
Abstract
Article in HTML | PDF (1050 KB) | (gzipped) PostScript (519 KB)

Correlation properties of the diffuse light from COBE -FIRAS maps
C. Burigana and L. Popa
Astron. Astrophys. 334, P 420-426 (1998).
Abstract
Article in HTML | PDF (318 KB) | (gzipped) PostScript (182 KB)


Extragalactic astronomy

The group of galaxies around 3C 275.1
J. Krempeć-Krygier, B. Krygier, and G. Walentynowicz
Astron. Astrophys. 334, P 427-438 (1998).
Abstract
Article in HTML | PDF (608 KB) | (gzipped) PostScript (387 KB)

Probing nuclear starburst activity in a sample of nearby spiral galaxies
C. Bonatto, M.G. Pastoriza, D. Alloin, and E. Bica
Astron. Astrophys. 334, P 439-452 (1998).
Abstract
Article in HTML | PDF (641 KB) | (gzipped) PostScript (407 KB)

Color distributions in E-S0 galaxies
I. Frequency and importance of dust patterns for various brands of E classified galaxies

R. Michard
Astron. Astrophys. 334, P 453-458 (1998).
Abstract
Article in HTML | PDF (82 KB) | (gzipped) PostScript (104 KB)

On the evolutionary behaviour of BL Lac objects
N. Bade, V. Beckmann, N.G. Douglas, P.D. Barthel, D. Engels, L. Cordis, P. Nass, and W. Voges
Astron. Astrophys. 334, P 459-472 (1998).
Abstract
Article in HTML | PDF (710 KB) | (gzipped) PostScript (291 KB)

The observational status of Stephan's Quintet
M. Moles, I. Márquez, and J.W. Sulentic
Astron. Astrophys. 334, P 473-481 (1998).
Abstract
Article in HTML | PDF (894 KB) | (gzipped) PostScript (914 KB)

Mid-infrared spectroscopy of obscured IRAS galaxies
Hideaki Mouri, Yoshiaki Taniguchi, Yasunori Sato, and Kimiaki Kawara
Astron. Astrophys. 334, P 482-488 (1998).
Abstract
Article in HTML | PDF (184 KB) | (gzipped) PostScript (1893 KB)

Gamma-ray to radio activity and ejection of a VLBI component in the jet of the S5-quasar 0836+710
K. Otterbein, T.P. Krichbaum, A. Kraus, A.P. Lobanov, A. Witzel, S.J. Wagner, and J.A. Zensus
Astron. Astrophys. 334, P 489-497 (1998).
Abstract
Article in HTML | PDF (340 KB) | (gzipped) PostScript (214 KB)

Does the optical-to-X-ray energy distribution of quasars depend on optical luminosity?
W. Yuan, J. Siebert, and W. Brinkmann
Astron. Astrophys. 334, P 498-504 (1998).
Abstract
Article in HTML | PDF (394 KB) | (gzipped) PostScript (204 KB)


Galactic structure and dynamics

Galactic chemical enrichment with new metallicity dependent stellar yields
L. Portinari, C. Chiosi, and A. Bressan
Astron. Astrophys. 334, P 505-539 (1998).
Abstract
Article in HTML | PDF (1222 KB) | (gzipped) PostScript (612 KB)

The large-scale distribution of X-ray active stars
P. Guillout, M.F. Sterzik, J.H.M.M Schmitt, C. Motch, D. Egret, W. Voges, and R. Neuhäuser
Astron. Astrophys. 334, P 540-544 (1998).
Abstract
Article in HTML | PDF (790 KB) | (gzipped) PostScript (12440 KB)

The space distribution of HIPPARCOS carbon stars
A. Knapik, J. Bergeat, and B. Rutily
Astron. Astrophys. 334, P 545-551 (1998).
Abstract
Article in HTML | PDF (156 KB) | (gzipped) PostScript (143 KB)


Stellar clusters and associations

Stellar clumps within the corona in the open cluster M 67
N.V. Chupina and S.V. Vereshchagin
Astron. Astrophys. 334, P 552-557 (1998).
Abstract
Article in HTML | PDF (296 KB) | (gzipped) PostScript (175 KB)


Formation, structure and evolution of stars

On the nature of the Be phenomenon
P. Harmanec
Astron. Astrophys. 334, P 558-570 (1998).
Abstract
Article in HTML | PDF (816 KB) | (gzipped) PostScript (543 KB)

On the high frequency polarization of pulsar radio emission
A. von Hoensbroech, J. Kijak, and A. Krawczyk
Astron. Astrophys. 334, P 571-584 (1998).
Abstract
Article in HTML | PDF (465 KB) | (gzipped) PostScript (270 KB)

The carbon star IRAS 06088+1909
A. Richichi, B. Stecklum, T.M. Herbst, P.-O. Lagage, and E. Thamm
Astron. Astrophys. 334, P 585-591 (1998).
Abstract
Article in HTML | PDF (264 KB) | (gzipped) PostScript (315 KB)

A search for substellar companions around nine weak-lined T-Tauri stars with the Planetary Camera 2 of the Hubble Space Telescope
Paola Sartoretti, Robert A. Brown, David W. Latham, and Guillermo Torres
Astron. Astrophys. 334, P 592-598 (1998).
Abstract
Article in HTML | PDF (229 KB) | (gzipped) PostScript (225 KB)

Beryllium abundances in parent stars of extrasolar planets: 16 Cygni A & B and 1 Cancri
R.J. Garcí a López and M.R. Pérez de Taoro
Astron. Astrophys. 334, P 599-605 (1998).
Abstract
Article in HTML | PDF (167 KB) | (gzipped) PostScript (152 KB)

Discovery of p-mode oscillations in the Ap star HD 213637
Peter Martinez, P. Meintjes, S.J. Ratcliff, and C. Engelbrecht
Astron. Astrophys. 334, P 606-608 (1998).
Abstract
Article in HTML | PDF (230 KB) | (gzipped) PostScript (214 KB)

Infrared carbon stars: new identifications and their space distribution in the Galaxy
F. Guglielmo, T. Le Bertre, and N. Epchtein
Astron. Astrophys. 334, P 609-617 (1998).
Abstract
Article in HTML | PDF (1127 KB) | (gzipped) PostScript (611 KB)


Stellar atmospheres

Spectral analyses of PG 1159 star: constraints on the GW Virginis pulsations from HST observations
S. Dreizler and U. Heber
Astron. Astrophys. 334, P 618-632 (1998).
Abstract
Article in HTML | PDF (1302 KB) | (gzipped) PostScript (885 KB)

Fe II emission lines in the UV spectrum of Sirius-A and Vega
M. van Noort, T. Lanz, H.J.G.L.M. Lamers, R.L. Kurucz, R. Ferlet, G. Hébrard, and A. Vidal-Madjar
Astron. Astrophys. 334, P 633-645 (1998).
Abstract
Article in HTML | PDF (489 KB) | (gzipped) PostScript (257 KB)


Diffuse matter in space (including H II regions and planetary nebulae)

Molecular gas in the Galactic center region
III. Probing shocks in molecular cores

S. Hüttemeister, G. Dahmen, R. Mauersberger, C. Henkel, T.L. Wilson, and J. Martín-Pintado
Astron. Astrophys. 334, P 646-658 (1998).
Abstract
Article in HTML | PDF (736 KB) | (gzipped) PostScript (467 KB)

Complex H: a case of HVC-galaxy collision?
R. Morras, E. Bajaja, and E.M. Arnal
Astron. Astrophys. 334, P 659-669 (1998).
Abstract
Article in HTML | PDF (823 KB) | (gzipped) PostScript (783 KB)

Localised, high-speed flows within the hydrogen-deficient planetary nebula Abell 78
J. Meaburn, J.A. López, M. Bryce, and M.P. Redman
Astron. Astrophys. 334, P 670-677 (1998).
Abstract
Article in HTML | PDF (851 KB) | (gzipped) PostScript (669 KB)

Ionization structure and a critical visual extinction for turbulent supported clumps
D.P. Ruffle, T.W. Hartquist, J.M.C. Rawlings, and D.A. Williams
Astron. Astrophys. 334, P 678-684 (1998).
Abstract
Article in HTML | PDF (318 KB) | (gzipped) PostScript (172 KB)


The Sun

Solar irradiances and radiances of UV and EUV lines during the minimum of sunspot activity in 1996
K. Wilhelm, P. Lemaire, I.E. Dammasch, J. Hollandt, U. Schühle, W. Curdt, T. Kucera, D.M. Hassler, and M.C.E. Huber
Astron. Astrophys. 334, P 685-702 (1998).
Abstract
Article in HTML | PDF (1524 KB) | (gzipped) PostScript (3928 KB)

Helioseismic constraints on new solar models from the MoSEC code
J.R. Elliott
Astron. Astrophys. 334, P 703-712 (1998).
Abstract
Article in HTML | PDF (230 KB) | (gzipped) PostScript (176 KB)


The solar system

Bolides produced by impacts of large meteoroids into the Earth's atmosphere: comparison of theory with observations
I. Benesov bolide dynamics and fragmentation

J. Borovika, O.P. Popova, I.V. Nemtchinov, P. Spurny, and Z. Ceplecha
Astron. Astrophys. 334, P 713-728 (1998).
Abstract
Article in HTML | PDF (604 KB) | (gzipped) PostScript (358 KB)

The mass of (1) Ceres from its gravitational perturbations on the orbits of 9 asteroids
B. Viateau and M. Rapaport
Astron. Astrophys. 334, P 729-735 (1998).
Abstract
Article in HTML | PDF (131 KB) | (gzipped) PostScript (136 KB)


Physical and chemical processes

On the dynamo driven accretion disks
Chun-Yu Ma and Peter L. Biermann
Astron. Astrophys. 334, P 736-741 (1998).
Abstract
Article in HTML | PDF (205 KB) | (gzipped) PostScript (152 KB)

Ambipolar diffusion in star-forming clouds
A. Hujeirat
Astron. Astrophys. 334, P 742-745 (1998).
Abstract
Article in HTML | PDF (1054 KB) | (gzipped) PostScript (576 KB)

Structure formation in the one dimensional gravitational gas
A. Muriel, A. Miciano-Cari no, and R. Cari no
Astron. Astrophys. 334, P 746-749 (1998).
Abstract
Article in HTML | PDF (214 KB) | (gzipped) PostScript (296 KB)

Possible bending mechanisms of protostellar jets
Christian Fendt and Hans Zinnecker
Astron. Astrophys. 334, P 750-755 (1998).
Abstract
Article in HTML | PDF (134 KB) | (gzipped) PostScript (135 KB)


© European Southern Observatory (ESO) 1998

Online publication: May 5, 1998
Last change: May 15, 1998
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