Bibcode
Recondo-Gonzalez, M. C.; Wamsteker, W.; Clavel, J.; Rodriguez-Pascual, P. M.; Vio, R.; Wang, T.-G.; Santos-Lleo, M.; Makino, F.
Referencia bibliográfica
VizieR On-line Data Catalog: J/A+AS/121/461. Originally published in: 1997A&AS..121..461R
Fecha de publicación:
6
1996
Número de citas
0
Número de citas referidas
0
Descripción
This is a study of the UV variability of the galaxy Fairall-9 between
1978 and 1991. Table 1 shows the UV continuum fluxes measured in three
"line-free" windows centered at 1171, 1400 and 1910 A (observed
wavelengths), and corrected for E(B-V)=0.035 extinction. The IUE Fine
Error Sensor (FES) counts (optical photometry) are also given in this
table, corrected for the same extinction. Tables 10, 11, 12 and 13 show
the variability of the components for the main UV lines (Lyα+NV,
SiIV, CIV and MgII). Line profile variability has been used to isolate
four gaussian line components, which are sufficient to describe all
lines at all levels of brightness in a consistent way: one narrow (i.e.
unresolved at the IUE resolution) and three broad components: a central
(velocity same as the narrow line), a redshifted (v=3300 km/s) and a
blue shifted one (v=-3600 km/s). The Lyα-NV blend is fitted
together in the Lyα region (Table 10), to account the NV presence
(one narrow and one red component). The results for SiIV are shown in
Table 11. In CIV (Table 12) have been included a very weak component
bluer than the blue component, most likely associated with NIV] 1486.
Table 13 shows MgII results. (5 data files).