Investigating the Sloan Digital Sky Survey Cataclysmic Variable SDSS J132723.39+652854.2

Abstract

ABSTRACT. Photometric and spectroscopic observations reveal the Sloan Digital Sky Survey cataclysmic variable SDSS J132723.39ϩ652854.2 to be a likely SW Sex star with an orbital period of hr. The P p 3.28 Sloan Digital Sky Survey spectrum shows strong He i, He ii, and Balmer emission lines. Time-resolved spectra acquired at Apache Point Observatory reveal absorption-line structure within the emission lines near phase 0.5. Photometric data obtained at Manastash Ridge Observatory using Harris V and B filters reveal a high-inclination system ( ) with deep (∼2 mag) eclipses. The orbital period and the spectral variations favor an SW Sex i p 80Њ interpretation.

SDSS unveils a population of intrinsically faint cataclysmic variables at the minimum orbital period

“… I Szkody et al (2002c); II Szkody et al (2003a); III Szkody et al (2004); IV Szkody et al (2005); V Szkody et al (2006); VI Szkody et al (2007a); VII Szkody et al (2009); 1 Southworth et al (in preparation); 2 Southworth et al (2008b); 3 Southworth et al (2007b); 4 Pretorius et al (2004); 5 Dillon et al (2008); 6 Woudt, Warner & Pretorius (2004); 7 Schmidt et al (2005b); 8 O'Donoghue et al (2006); 9 Southworth et al (2006); 10 Kato et al (2009); 11 Ak et al (2005); 12 Homer et al (2005); 13 Dillon et al (in preparation); 14 Pavlenko et al (2007); 15 Shears, Klingenberg & de Ponthiere (2007); 16 Zharikov et al (2008); 17 Thorstensen et al (in preparation); 18 Rodríguez‐Gil, Schmidtobreick & Gänsicke (2007a); 19 Thorstensen, Fenton & Taylor (2004); 20 Boyd, Shears & Koff (2008); 21 Littlefair et al (2008); 22 Woudt et al (2005); 23 this paper; 24 Schmidt et al (2008); 25 Homer et al (2006a); 26 Schmidt et al (2007); 27 Littlefair et al (2006b); 28 Schmidt et al (2005a); 29 Burleigh et al (2006); 30 Farihi, Burleigh & Hoard (2008); 31 Shears et al (2008); 32 Zharikov et al (2006); 33 Szkody et al (2003b); 34 Wolfe et al (2003); 35 Gänsicke et al (2006); 36 Littlefair et al (2007); 37 Patterson et al (in preparation); 38 Woudt & Warner (2004); 39 Copperwheat et al (2009); 40 Shears et al (2009); 41 Littlefair et al (2006a); 42 Boyd, Oksanen & Henden (2006); 43 Peters & Thorstensen (2005); 44 Woudt et al (2005); 45 Woudt, Warner & Pretorius (2009); 46 Potter et al (2006); 47 Homer et al (2006b); 48 Tramposch et al (2005); 49 Southworth, Townsley & Gänsicke (2008a); 50 Southworth et al (2007a). …”

“…In a series of earlier papers, we have explored the properties of individual SDSS CVs (e.g. Szkody et al 2003b; Wolfe et al 2003; Peters & Thorstensen 2005; Gänsicke et al 2006; Littlefair et al 2006a; Southworth et al 2006, 2007b; Dillon et al 2008). Here, we compile accurate orbital period measurements for 137 SDSS CVs, and show that the period distribution of these systems differs dramatically from all previously examined samples.…”

SW Sextantis stars: the dominant population of cataclysmic variables with orbital periods between 3 and 4 h

“… References . 1 Rodríguez‐Gil et al (2001); 2 Casares et al (1996); 3 Mickaelian et al (2002); 4 Hoard et al (2000); 5 Rodríguez‐Gil, Schmidtobreick & Gänsicke (2007); 6 Rodríguez‐Gil et al (2004); 7 Szkody et al (2003); 8 Thorstensen et al (1991b); 9 Wolfe et al (2003); 10 Beuermann et al (1992); 11 Moustakas & Schlegel (1999); 12 Schmidtobreick, Tappert & Saviane (2003); 13 Rodríguez‐Gil & Martínez‐Pais (2002); 14 Szkody et al (2001); 15 Thorstensen et al (1991a); 16 Hoard et al (1998); 17 Young, Schneider & Shectman (1981); 18 Garnavich et al (1990); 19 Taylor et al (1999); 20 Thoroughgood et al (2005); 21 Groot, Rutten & van Paradijs (2004); 22 Thoroughgood et al (2004); 23 Smith et al (1998) …”

Orbital periods of cataclysmic variables identified by the SDSS – III. Time-series photometry obtained during the 2004/5 International Time Project on La Palma

“…The newly identified CVs have been followed up by a number of groups (e.g. Wolfe et al 2003; Pretorius et al 2004; Woudt & Warner 2004; Peters & Thorstensen 2005; Roelofs et al 2005; Tramposch et al 2005; Gänsicke et al 2006; Littlefair et al 2006a,b; Southworth et al 2006, 2007a,b). Our group has been awarded the International Time 2004/2005 on La Palma for the study of SDSS CVs, and we report in this paper photometric time‐series obtained for 15 systems.…”