Search Publications
A catalogue of symbiotic stars
Ivison, R. J.; Munari, U.; Friedjung, M. +2 more
We present a new catalogue of symbiotic stars. In our list we include 188 symbiotic stars as well as 30 objects suspected of being symbiotic. For each star, we present basic observational material: coordinates, V and K magnitudes, ultraviolet (UV), infrared (IR), X-ray and radio observations. We also list the spectral type of the cool component, t…
The INES system. III. Evaluation of IUE NEWSIPS high resolution spectra
Altamore, A.; Solano, E.; Wamsteker, W. +2 more
This paper discusses the overall quality of IUE high resolution data processed with the NEWSIPSlinebreak software in terms of flux and wavelength accuracy. It also describes the processing of NEWSIPS high resolution spectra within the framework of the ESA ``IUE Newly Extracted Spectra'' (INES) System. This system provides the IUE high resolution d…
Mapping the star formation history of Mrk 86. I. Data and models
Gallego, J.; Zamorano, J.; Gil de Paz, A. +1 more
We have obtained optical (BVR, [O Iii]lambda 5007 Å and Hα ), near infrared (JHK) imaging and long-slit optical spectroscopy for the Blue Compact Dwarf galaxy
The INES system. II. Ripple correction and absolute calibration for IUE high resolution spectra
Talavera, A.; Altamore, A.; Wamsteker, W. +4 more
In this paper we document the results of the study which led to the ripple correction and absolute calibration algorithms applied to the high resolution spectra processed with the NEWSIPS software for the Final Archive of the IUE Project. In this analysis, based on a very large number of spectra, we find that both the K and alpha parameters (not o…
30 years of multi-wavelength observations of 3C 273
Bouchet, P.; Paltani, S.; Stevens, J. A. +14 more
We present a wide multi-wavelength database of most observations of the quasar 3C 273 obtained during the last 30 years. This database is the most complete set of observations available for an active galactic nucleus (AGN). It contains nearly 20 000 observations grouped together into 70 light curves covering 16 orders of magnitude in frequency fro…
The IUE INES System: Improved data extraction procedures for IUE
Schartel, N.; Rodríguez-Pascual, P. M.; Wamsteker, W. +1 more
We present the extraction and processing of the IUE Low Dispersion spectra within the framework of the ESA ``IUE Newly Extracted Spectra'' (INES) System. Weak points of SWET, the optimal extraction implementation to produce the NEWSIPS output products (extracted spectra) are discussed, and the procedures implemented in INES to solve these problems…
Understanding A-type supergiants. I. Ultraviolet and visible spectral atlas
Talavera, A.; Verdugo, E.; Gómez de Castro, A. I.
This paper is the first of a series whose aim is to perform a systematic study of A-type supergiant atmospheres and winds. Here we present a spectral atlas of 41 A-supergiants observed by us in high and medium resolution in the visible and ultraviolet. The atlas consists of profiles of the Hα , Hβ , Hγ , Hdelta , Hepsilon , Ca II (H and K), Na I (…
Spectroscopy of the post-AGB star HD 101584 (IRAS 11385-5517)
Pottasch, S. R.; García-Lario, P.; Parthasarathy, M. +2 more
From an analysis of the spectrum (4000 Ä to 8800 Ä) of HD 101584 it is found that most of the neutral and single ionized metallic lines are in emission. The forbidden emission lines of [OI] 6300 Ä and 6363 Ä and [CI] 8727 Ä are detected, which indicate the presence of a very low excitation nebula. The Hα , FeII 6383 Ä, NaI D1, D2
UV turn-off times of classical novae
Gallagher, J.; Orio, M.; Gonzalez-Riestra, R.
We present IUE spectra of classical novae obtained at least one year after the outburst. The UV luminosities are compared with the ROSAT\ observations and significant parameters of the systems. The turn-off times derived from the IUE data are in agreement with the ROSAT\ results, showing that most novae decline in bolometric luminosity 1-5 years a…
The photosphere and chromosphere of the RS Canum Venaticorum star, II Pegasi. II. A multi-wavelength campaign in August/September 1992
Amado, P. J.; Doyle, J. G.; Sarro, L. M. +14 more
We describe multi-wavelength, simultaneous observations of the RS CVn star, II Pegasi, most of which were obtained during the first three weeks of September 1992. These observations were made using optical and infra-red broad-band photometry, ultraviolet and optical spectroscopy and microwave monitoring. We have detected photospheric spots and chr…