New SX Phoenicis Variable Stars

A. V. Khruslov
Russia, Tula

Received:   28.02.2006;   accepted:   2.03.2006
(E-mail for contact: khruslov@bk.ru)

Comments:


1. M-m = 0.18 P. The period value is based on the NSVS data and our additional visual observations (343 estimates, JD2453506-2453681; comparison stars: TYC 4519 00958 1, TYC 4519 00375 1, TYC 4519 01588 1, magnitudes of the comparison stars were taken from the Tycho-2 catalog; telescope: 15-cm reflector), 11.7-12.4(vis).

2. M-m = 0.25 P.

3. M-m = 0.3 P

Remarks:
I present the discovery of 3 new high-amplitude Delta Scuti stars (HADS). Their large distances from the galactic plane make it possible to consider them SX Phoenicis variables. My search for variables was carried out in the publicly available data of the Northern Sky Variability Survey (NSVS, Wozniak et al., 2004, also see http://skydot.lanl.gov/nsvs). These observations were analyzed using the period-search software developed by Dr. V.P. Goranskij for Windows environment. The coordinates are from the Tycho-2 catalog.

References:
Wozniak, P.R., Vestrand, W.T., Akerlof, C.W. et al., 2004, Astron. J., 127, 2436