All Figures

Figure 1: HST WFPC2 Planetary Camera images of the nucleus and circumnuclear star-forming ring of NGC 7469 in the available optical filters. Contours represent the VLA 8.4 GHz image taken on October 27, 2000 when the supernova SN 2000ft was first detected (Colina et al. 2001). The HST images taken in May 2000 ( F547M and F814W) clearly show an increase in flux in the region where SN 2000ft exploded with respect to that of clusters C2, C3 and C5 as observed through the F606W filter in 1994 (see text and Table 1). Image F606W shows a bright source (SN?) at 0 47 from the nucleus that could be real and associated with another supernova (see Sect. 3.1 for details). The dust distribution is shown in the HST/NICMOS J-H color image ( F110W - F160W, upper right panel) taken in Nov. 1997. Assuming the diffuse stellar emission is associated with an old population, the range of colors corresponds to visual extinctions of  mag (between 1 and 5 mag if a young stellar population is considered). The bright Seyfert 1 nucleus has been removed from the images in the top and central panels to better identify the surrounding star clusters and diffuse structure in the ring, in particular in the F606W and J-H color images. The original F547M and F814W images with the bright nucleus are presented in the bottom panels for reference.

Open with DEXTER


In the text