Science Archives Publication System

HIPPARCOS and the Future of Space Astrometry

DOI: 10.1023/A:1007985119809 Bibcode: 1997ExA.....7..325P

Perryman, M. A. C.

1997 • Experimental Astronomy

Hipparcos 0

Development and Effects of Corotating Interaction Regions: Workshop Report

Bibcode: 1997ICRC....1..357K

Kunow, H.; Bothmer, V.

1997 • International Cosmic Ray Conference

Ulysses 0

Towards a Multi-Dimensional Stellar Classification System

DOI: 10.1515/astro-1997-0109 Bibcode: 1997BaltA...6...41S

Stock, J.; Agostinho, R.; Rose, J. A. +2 more

Practically all the MK spectral types known today are the result of visual inspection of photographic spectra. This includes the monumental work by Nancy Houk. Two questions related to the MK system remained unanswered all along, namely 1) How accurate are the luminosities and intrinsic colors derived from these types? And 2) Can the classificatio…

1997 • Baltic Astronomy

Hipparcos 0

The Sun and its role in the heliosphere. Proceedings. E2.2 Symposium of COSPAR Scientific Commission E held during the Thirty-first COSPAR Scientific Assembly, Birmingham (UK), 14 - 21 Jul 1996.

Bibcode: 1997AdSpR..20Q....A

Antonucci, E.; Page, D. E.

The following topics were dealt with: solar corona, solar wind, structure, composition and variations, solar wind plasma, Ulysses measurements, heliospheric magnetic fields, interplanetary medium, interplanetary plasma and shocks, and energetic particle fluxes.

1997 • Advances in Space Research

Ulysses 0

The Tokyo PMC Catalog 90 - 93: catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo Photoelectric Meridian Circle.

Bibcode: 1997PNAOJ...5....1Y

Yoshizawa, Masanori; Suzuki, Shunsaku

The sixth annual catalog of the Toyko PMC is presented for 6649 stars, which were observed at least two times in January 1990 through March 1993. The mean positions of the stars observed in the above period are given in the catalog at the corresponding mean epochs of observations of individual stars. The coordinates of the catalog are based on the…

1997 • Publications of the National Astronomical Observatory of Japan

Hipparcos 0

Low Energy Interplanetary Particles at Northern Solar Latitudes

Bibcode: 1997ICRC....1..325L

Pick, M.; Krimigis, S. M.; Lanzerotti, L. J. +3 more

1997 • International Cosmic Ray Conference

Ulysses 0

Numerical Determination of Mean Free Paths from Ulysses Data as a Function of Helio-Latitude and Upstream of a Reverse Shock

Bibcode: 1997ICRC....1..229D

Smith, E. J.; Quenby, J. J.; Drolias, B. +1 more

1997 • International Cosmic Ray Conference

Ulysses 0

Understanding Elemental and Isotopic Abundance Anomalies in the Galactic Cosmic Ray

Bibcode: 1997ICRC....4..361D

Du Vernois, M. A.

1997 • International Cosmic Ray Conference

Ulysses 0

New Insights on Late-A and Early-F Star Activity

DOI: 10.1080/10556799708213569 Bibcode: 1997A&AT...14...41F

Talavera, A.; Freire Ferrero, R.; Bruhweiler, F. +3 more

The onset of chromospheric activity in late-A and early-F stars is here discussed. The detection of Ly- emission core in several A and F atars with the IUE satellite, gives evidence for the presence of chromospheric layers in these stars up to B - V = 0m.19 (Marilli et al., 1996). Semiempirical chromospheric models for Altair allowed us (Freire Fe…

1997 • Astronomical and Astrophysical Transactions

IUE 0

Inferences on Coronal Magnetic Fields from SOHO UVCS Observations

DOI: 10.1023/A:1004939308866 Bibcode: 1997SoPh..174...53P

Romoli, M.; Wu, S. T.; Poletto, G. +2 more

The characteristics of the magnetic field ubiquitously permeating the coronal plasma are still largely unknown. In this paper we analyze some aspects of coronal physics, related to the magnetic field behavior, which forthcoming SOHO UVCS observations can help better understand. To this end, three coronal structures will be examined: streamers, cor…

1997 • Solar Physics

SOHO 0