Table 2
Comparison of WD/MS PCEBs with Porb < 1 d that have time-series spectroscopic data published at sufficient high spectral resolution to examine the Hα emission line profile for the presence of multiple components.
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| object | Porb | TWD | MS | nHα | HαMS | references |
| [h] | [103 K] | |||||
|
|
||||||
| J0152 | 2.17 | 9 | M6 | 2 | – | this paper |
| J2112 | 2.17 | 20 | M6 | 2 | – | this paper |
| J1559 | 2.27 | 49 | – | 2 | a+i | this paper |
| HR Cam | 2.47 | 19 | – | (1) | i | Bergeron et al. (1992), Marsh & Duck (1996), Maxted et al. (1998) |
| J0052 | 2.73 | 16 | M4 | 2 | – | this paper |
| HS 2237+8154 | 2.98 | 12 | M3.5 | 2 | a | Gänsicke et al. (2004) |
| NN Ser | 3.12 | 57 | M4 | (1) | i | Haefner (1989), Haefner et al. (2004), Parsons et al. (2010) |
| J0303 | 3.20 | – | M4 | 2 | – | this paper |
| LTT 560 | 3.54 | 7 | M5.5 | 2 | a | Tappert et al. (2007), Tappert et al. (2011) |
| J2123 | 3.58 | 13 | M6 | 1 | – | this paper |
| QS Vir | 3.62 | 14 | M4 | 3 | a | Kawka et al. (2002), O’Donoghue et al. (2003), Parsons et al. (2011) |
| J1529 | 3.95 | 14 | M5 | 1 | – | this paper |
| J1411 | 4.02 | 30 | M3 | 1? | – | this paper |
| BPM 71214 | 4.85 | 17 | M2.5 | 1 | a | Kawka et al. (2002), Kawka & Vennes (2003) |
| J2216 | 5.05 | 12 | M5 | 2 | – | this paper |
| J0238 | 5.08 | 22 | M3 | 1 | – | this paper |
| J2132 | 5.33 | 16 | M4 | 1 | – | this paper |
| HS 1857+5144 | 6.38 | 85 | M5 | (1) | i | Aungwerojwit et al. (2007) |
| CC Cet | 6.89 | 26 | M5 | 1 | i | Saffer et al. (1993), Somers et al. (1996) |
| RR Cae | 7.30 | 8 | M4 | 1 | a | Bruch & Diaz (1998), Bruch (1999), Maxted et al. (2007) |
| WD 1042-690 | 8.06 | 21 | – | 1 | a | Bragaglia et al. (1995), Morales-Rueda et al. (2005) |
| DE CVn | 8.74 | 8 | M3 | 1 | a | van den Besselaar et al. (2007) |
| V471 Tau | 12.50 | 35 | K2 | 1 | – | Nelson & Young (1970), Young & Nelson (1972); |
| Gilmozzi & Murdin (1983); Bois et al. (1991) | ||||||
| HZ 9 | 13.54 | 17 | M4.5 | 1 | a | Lanning & Pesch (1981), Bleach et al. (2002), Schreiber & Gänsicke (2003) |
| UZ Sex | 14.33 | 20 | M4 | 1 | a | Saffer et al. (1993), Kepler & Nelan (1993), Bruch & Diaz (1999) |
| EG UMa | 16.03 | 13 | M4 | 1 | a | Bleach et al. (2000), Bleach et al. (2002) |
| WD 2009+622 | 17.78 | 26 | M5.5 | 1 | i | Bergeron et al. (1992), Morales-Rueda et al. (2005), Farihi et al. (2005) |
| HS 1136+6646 | 20.06 | 70 | K5.5 | (1) | i | Sing et al. (2004) |
Notes. Columns: (2) orbital period; (3) approximate temperature of the white dwarf; (4) spectral type of the main-sequence star; (5) number of Hα emission components, a “1” in brackets marks non-LTE effects; (6) origin of the Hα component from the main-sequence star, either stellar (a)ctivity or (i)rradiation from the white dwarf.
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