Eclipse maps of the dwarf nova IP Peg on the decline from outburst

Details Eclipse maps of the dwarf nova IP Peg on the decline from outburst Eclipse maps of the dwarf nova IP Peg on the decline from outburst

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...327.1023b&link_type=abstract

Astronomy and Astrophysics, v.327, p.1023-1038 (1997)

Astronomy and Astrophysics

Astrophysics

23

Stars: Cataclysmic Variables, Accretion Disks, Individual: Ip Peg

Scientific paper

We present UBVRI observations of 4 eclipses of the dwarf nova IP Peg on decline from an outburst. The dataset was obtained during a long-term observing campaign between July 1990 and December 1991. Maximum entropy techniques are used to derive the intensity distribution in colors UBVRI and the brightness temperature distribution of the disk. The disk maps show a 7000-9000 Kelvin inner disk zone surrounded by an outer disk zone with declining temperature. During decline from outburst the boundary between this two zones of the disk travels inward with a speed of about 800 m/s. Based on observations obtained at the Mt. Wendelstein Observatory, Germany.

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