Peremennye Zvezdy

Article in PDF
"Peremennye Zvezdy",
Prilozhenie
,
vol. 6, N 7 (2006)

New SX Phoenicis Variable Stars

A. V. Khruslov
Russia, Tula

ISSN 2221–0474

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


#NameOtherCoord (J2000)TypeMaxMinSystemPeriodEpoch (JD)typeSpCommentL.CurveFind.ChartData
1 TYC 4519 01078 104 57 20.99, +79 20 58.7SXPHE11.7512.15R0.14032292451495.807max Comm. 11.jpgchart1.jpgvis.dat NSVS 448314 NSVS 574797 NSVS 616835
2 TYC 3483 00746 115 44 36.60, +46 19 22.3SXPHE12.3512.70R0.1128922451388.951max Comm. 22.jpgchart2.jpgNSVS 5192753 NSVS 5201005
3 TYC 3490 00814 115 50 28.49, +45 57 51.6SXPHE12.6512.95R0.0685872451486.310max Comm. 33.jpgchart3.jpgNSVS 5174241 NSVS 5195407 NSVS 5203259

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



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