Hot Dust on the Outskirts of the BLR in Fairall 9

Extract

Since 1978, the Seyfert I galaxy F9 (z = 0.0461) has been observed at 54 epochs in the far ultraviolet and optical range with the IUE (Boggess et al 1978), and 27 times in the near IR from SAAO. The IUE provided spectrophotometric low resolution (900 km.s⁻¹) datá over the 1200–3200 Å range as well as simultaneous broad band optical photometry at an effective wavelength of 5200 Å. SAAO data consist of photometric measurements in the J, H, K and L bands. From the IUE data, we obtained the light-curves of the continuum at 1328 Å and 1826 Å (rest wavelengths), as well as those of the Lyα1216, CIV1550 and MgII2800 emission lines. More details can be found in Clavel, Wamsteker and Glass (1989).