The 1994 Superoutburst of the New SU UMa-type Dwarf Nova, SX Leonis Minoris

Details The 1994 Superoutburst of the New SU UMa-type Dwarf Nova, SX Leonis Minoris The 1994 Superoutburst of the New SU UMa-type Dwarf Nova, SX Leonis Minoris

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pasp..109.1114n&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.109, p.1114-1121

Astronomy and Astrophysics

Astronomy

54

Stars: Individual: Sx Lmi, Stars: Oscillations, Stars: Mass-Loss

Scientific paper

We present observations of SX LMi obtained during the 1994 long outburst at Ouda Station. Superhumps, with a period of 0.06950 (\pm 0.00002) d, are detected. This confirms SX LMi as a new member of the SU UMa-type dwarf novae. We measured the recurrence cycle of normal outbursts and superoutbursts to be about 35 d and 250 d, repsectively, from outburst records by RoboScope (Indiana University) and amateur observers. These recurrence cycles are typical values for normal SU UMa stars. However, the outburst amplitude (\sim3.8 mag) of SX LMi is small for an SU UMa star and close to those of ER UMa stars. This small outburst amplitude might be understood if the viscosity at quiescence and the mass-transfer rate are slightly high in SX LMi. (SECTION: Stars)

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