Science Archives Publication System

ISO Spectroscopy of AGB Stars in the Magellanic Clouds

DOI: 10.1023/A:1001568630950 Bibcode: 1998Ap&SS.255..391T

Waters, L. B. F. M.; Blommaert, J. A. D. L.; van Loon, J. Th. +7 more

1998 • Astrophysics and Space Science

ISO 0

Excitation of Far-Infrared Lines of OH and Maser Pumping Efficiency in Circumstellar Envelopes

Bibcode: 1998Ap&SS.255..329T

Bujarrabal, V.; Nguyen-Q-Rieu; Le Bertre, T. +3 more

We present the results obtained with a radiative transfer model to investigate the excitation of OH molecules. Maser pumping efficiencies are estimated from the model and compared to the value calculated using recent OH far-infrared (FIR) observations with ISO and OH maser data.

1998 • Astrophysics and Space Science

ISO 0

Hst/fos Spectroscopy of HH47a: Shock Velocity, Magnetic Fields and Secondary Shock Structure

Bibcode: 1998RMxAC...7..137T

Raymond, J. C.; Hartigan, P.; Morse, J. A. +1 more

1998 • Revista Mexicana de Astronomia y Astrofisica Conference Series

eHST 0

Cosmic rays in the heliosphere. Proceedings. ISSI (International Space Science Institute) Workshop, Bern (Switzerland), 17 - 20 Sep 1996 and 10 - 14 Mar 1997.

Bibcode: 1998SSRv...83.....F

Simnett, G. M.; Fisk, L. A.; Wenzel, K. -P. +2 more

The following topics were dealt with: solar modulation; solar wind; magnetic fields; heliosphere; galactic cosmic rays; anomalous cosmic rays.

1998 • Space Science Reviews

Ulysses 0

The Cluster II mission - The Spatio Temporal Analysis of Field Fluctuations

Bibcode: 1998psp..book...81C

Cornilleau-Wehrlin, N.

1998 • In: Physics of Space Plasmas

Cluster 0

Calibration of the Classical Cepheid Period-Luminosity Relation from HIPPARCOS Data

DOI: 10.1023/A:1002162311703 Bibcode: 1998Ap&SS.263..215L

Luri, X.; Figueras, F.; Torra, J. +3 more

The calibration of the classical Cepheid Period-Luminosity (PL) relation is a fundamental step for the determination of the cosmic distance scale. In this paper a calibration obtained from Hipparcos data is presented and used to estimate the LMC distance modulus. A value of 18.35^m ± 0.13 is obtained.

1998 • Astrophysics and Space Science

Hipparcos 0

Determination of Stellar Surface Temperature Using Ultraviolet Spectra

Bibcode: 1998JASS...15...91K

Choi, Young-Jun; Han, Wonyong; Kang, Young Woon +3 more

Color indexes and effective temperatures for 25 standard stars have been determined as a pilot project which show a relationship between color index and effective temperature in ultraviolet region. The effective temperature was determined by comparing energy distribution curves derived from the IUE low dispersion spectra with Kurucz atmosphere mod…

1998 • Journal of Astronomy and Space Sciences

IUE 0

Spectroscopic Survey of δ SCT Stars

DOI: 10.1023/A:1002139118063 Bibcode: 1998Ap&SS.263..267S

Solano, E.; Pintado, O. I.

The methods used to derive effective temperatures, projected rotational velocities and surface gravities of a sample of low and high-amplitude δ Sct stars are presented here. Effective temperatures were derived using Hα and Hβ line profiles whereas rotational velocities were calculated following the method described in Solano & Fernley (1997).…

1998 • Astrophysics and Space Science

Hipparcos 0

Asteroids as Far-Infrared Photometric Standards

DOI: 10.1086/316213 Bibcode: 1998PASP..110.1001M

Müller, Thomas G.

1998 • Publications of the Astronomical Society of the Pacific

ISO 0

Protostars and Protoplanetary Disks

DOI: 10.1023/A:1001142213744 Bibcode: 1998Ap&SS.255...15B

Boss, A. P.

1998 • Astrophysics and Space Science

ISO 0