Science Archives Publication System

Observations of Interstellar CO at MM and UV Wavelengths and Diverse Comments on Interstellar Diffuse Lines

Bibcode: 1981IrAJ...15...51M

McNally, D.

The directions of stars known to exhibit the molecule CN in their interstellar spectra were searched for CO at both millimeter and ultraviolet wavelengths in order to obtain more information about moderately dense interstellar material, which is of value in ascertaining the dynamics of star formation. Results show that where both CO and CN have be…

1981 • Irish Astronomical Journal

IUE 0

IUE spectra of RS PUP and HD 20722 : stars in symmetric dusty nebulae.

DOI: 10.1086/130824 Bibcode: 1981PASP...93..285J

Johnson, H. M.

Spectra obtained by the IUE satellite of the Cepheid variable RS Puppis and the K giant HD 20722, both of which are surrounded by symmetric nebula, are presented. Exposures were made in 1980 with the long wavelength redundant camera and 10 x 20 arcmin focal plane aperture at a spatial resolution of about 5 arcsec and spectral resolution about 6 A.…

1981 • Publications of the Astronomical Society of the Pacific

IUE 0

Absorption Spectra of Interstellar Grains - Part Two - Fine Structure of the 2200 Hump

Bibcode: 1981AcA....31..427C

Chlewicki, G.; Krelowski, J.

The ultraviolet TD-1 and IUE spectra of reddened stars were analyzed in order to check the possibility of some differences in the 2200 hump profile, dependent on the spectral type or luminosity of observed stars. The profiles seem to be clearly affected by stellar parameters supporting our earlier hypotesis that this prominent UV spectral feature …

1981 • Acta Astronomica

IUE 0

Gamma-Ray Emission from the Orion Cloud Complex and the Ratio CO/H2

Bibcode: 1981ICRC....1..143M

Catala, C.; Masnou, J. L.; Strong, A.

A new value for the density ratio of H2/(C-13)O is derived by making a comparison between the COS-B gamma-ray survey above 100 MeV and the CO survey of the Orion cloud complex. Results rely on the assumption that the gamma-ray emissivity above 100 MeV is uniform over the whole cloud complex and its surroundings, and has the local value derived by …

1981 • International Cosmic Ray Conference

COS-B 0

Two years of observation with the international ultraviolet explorer

DOI: 10.1016/0273-1177(81)90192-7 Bibcode: 1981AdSpR...1m.185D

Lamers, H. J. G. L. M.; de Jager, C.

The launching of I.U.E., in January 1978, has provided the astronomical community with a powerful observatory-type spacecraft enabling one a practically continuous observation of ultra-violet spectra of celestial bodies. Two years of operation have led to many new developments, in which a large number of astronomers participated. This review summa…

1981 • Advances in Space Research

IUE 0

Ultraviolet emissions from the upper atmospheres of the planets

DOI: 10.1016/0273-1177(81)90229-5 Bibcode: 1981AdSpR...1i.155M

Moos, H. W.

A large number of atoms and molecules have strong emission lines in the vacuum ultraviolet. As a result, this spectral region is particularly suited to studying the upper atmospheres of the planets. The observed emissions not only identify the constituents, but also provide information on the solar and magnetospheric excitation processes. Long ter…

1981 • Advances in Space Research

IUE 0

The object glass of the Airy transit circle at Greenwich

Bibcode: 1981Obs...101...43L

Lowne, C. M.

1981 • The Observatory

IUE 0

Allocation of telescope time: in praise of parsimony

Bibcode: 1981Obs...101...55P

Penston, M. V.; Darius, J.

1981 • The Observatory

IUE 0

Ultraviolet Observations of Mv-Lyrae

DOI: 10.1007/BF01246023 Bibcode: 1981SSRv...30..231C

Maraschi, L.; Tanzi, E. G.; Chiappetti, L. +1 more

1981 • Space Science Reviews

IUE 0

IUE Observatory / European Space Agency / Villafranca Satellite Tracking Station

Bibcode: 1981QJRAS..22...73P

Penston, M. V.

1981 • Quarterly Journal of the Royal Astronomical Society

IUE 0