Absolute spectrophotometry and photometric evolution of Nova Scuti 2005 N.1 (≡ V476 Sct) |
| |
| Authors: | U Munari A Henden G Pojmanski S Dallaporta A Siviero H Navasardyan |
| |
| Institution: | Centro de Física do Porto e Departamento de Física da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal;Astronomy Centre, University of Sussex, Brighton BN1 9QH |
| |
| Abstract: | Our CCD photometry of Nova Scuti 2005 N.1 shows it to be a fast nova, characterized by t 2= 15 and t 3= 28d , affected by an E ( B ? V ) ～ 1.9 mag reddening, appearing at a position  (±0.04 arcsec)  (±0.09 arcsec, J2000) and peaking at V ～ 11.1 mag on ～September 28.1 ut . Absolute spectrophotometry places it within the Fe ii class. The profile of emission lines is characterized by a double peak with a velocity separation of 690 km s?1 and a width at half intensity of 1200 km s?1. The distance to the nova is 4 ± 1 kpc , and its height above the Galactic plane is z = 80 ± 20 pc. The highly crowded field affects a possible identification of the progenitor, whose pre-outburst magnitude should, however, have been 22 < V < 25 mag, thus below the limit of photographic surveys. A deep B V R C I C photometric sequence is provided to support continued observations of the advanced decline phases. |
| |
| Keywords: | cosmic microwave background cosmology: theory |
|
|
