Post common envelope binaries from SDSS - XI. The white dwarf mass distributions of CVs and pre-CVs

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Volume 536 (December 2011)

A&A, 536 (2011) A42

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Table 3

Derived properties of the PCEBs in our sample.

Object

M_wd

P_CE

M_1,o

M_1,CE

a_i

P_sd

t_evolv

t_cool

t_sd

t_tot

Notes

[M_⊙]

[d]

[M_⊙]

[R_⊙]

[h]

[yr]

WD0137 − 3457

0.39

0.14

0.083

0.980

0.900

124.06

0.921

1.33E + 10

2.02E + 08

1.65E + 09

1.51E + 10

GD 448

0.41

0.23

0.105

1.190

1.120

152.23

1.282

6.57E+09

1.18E+08

1.84E+09

8.53E+09

NN Ser

0.54

0.21

0.130

2.010

1.964

287.58

1.825

1.47E+09

1.18E+06

2.26E+09

3.73E+09

LTT 560

0.52

0.36

0.168

1.690

1.615

251.56

2.204

2.15E+09

1.04E+09

1.88E+09

5.07E+09

MS Peg

0.46

0.48

0.174

1.750

1.725

225.23

2.651

1.80E+09

7.82E+07

2.67E+09

4.55E+09

LM Com

0.45

0.62

0.259

1.670

1.641

224.19

2.660

2.09E+09

3.24E+07

8.23E+09

1.04E+10

CC Cet

0.39

0.46

0.284

1.020

0.945

144.91

2.016

1.15E + 10

4.28E + 07

1.78E + 10

2.93E + 10

CSS 080502

0.35

0.91

0.288

0.990

0.945

103.79

2.873

1.28E + 10

1.45E + 08

9.13E + 06

1.29E + 10

RR Cae

0.44

0.41

0.314

1.310

1.240

213.61

1.715

4.68E + 09

2.04E + 09

2.04E + 10

2.71E + 10

BPM 6502

0.52

0.33

0.337

1.410

1.276

287.03

2.001

3.78E + 09

3.79E + 07

2.56E + 10

2.94E + 10

GK Vir

0.52

0.19

0.344

1.510

1.387

345.24

1.652

3.03E + 09

2.02E + 06

4.48E + 10

4.78E + 10

EC 12477-1738

0.61

0.62

0.386

2.590

2.525

372.82

3.467

7.24E+08

1.13E+08

4.42E+08

1.28E+09

EC 14329-1625

0.62

0.61

0.397

2.650

2.583

383.44

3.471

6.78E+08

2.20E+08

3.98E+08

1.34E+09

EC 13349 − 3237

0.46

1.09

0.470

1.750

1.725

257.59

3.938

1.80E + 09

<5.0E07

1.03E + 09

2.83E + 09

DE CVn

0.53

0.77

0.477

1.860

1.810

297.61

3.028

1.65E + 09

8.95E + 08

5.97E + 08

3.14E + 09

RXJ2130.6 + 4710

0.55

1.01

0.529

2.140

2.099

312.03

4.417

1.24E + 09

8.84E + 07

1.73E + 09

3.06E + 09

HZ 9

0.52

0.54

0.564

1.440

1.314

309.08

2.679

3.53E + 09

8.71E + 07

6.52E + 10

6.88E + 10

UX CVn

0.39

1.08

0.570

1.110

1.043

162.31

3.237

8.44E + 09

<5.0E07

1.86E + 09

1.03E + 10

UZ Sex

0.65

0.34

0.597

2.710

2.586

451.50

2.385

6.37E + 08

8.37E + 07

7.88E + 10

7.96E + 10

EG UMa

0.64

0.66

0.683

2.730

2.641

439.15

3.659

6.23E+08

3.13E+08

3.94E+09

4.88E+09

RE J2013 + 4002

0.56

0.32

0.706

2.170

2.102

391.24

2.194

1.19E + 09

2.10E + 06

1.66E + 11

1.68E + 11

RE J1016 − 0520

0.60

0.25

0.789

2.360

2.243

423.38

1.998

9.41E + 08

1.60E + 06

2.52E + 11

2.53E + 11

IN CMa

0.57

0.75

1.260

2.270

2.202

422.04

3.023

1.05E + 09

1.73E + 06

4.51E + 10

4.61E + 10

b, c

Feige 24

0.57

0.68

4.232

2.190

2.100

474.80

3.195

1.16E + 09

1.33E + 06

1.94E + 12

b, c

IK Peg

1.19

1.43

21.722

6.500

6.124

1300.58

521.32

6.55E + 07

2.70E + 07

1.88E + 09

1.97E + 09

SDSS0052 − 0053

1.22

0.26

0.297

6.740

6.464

873.70

2.960

6.03E + 07

4.22E + 08

−5.32E + 06

4.77E + 08

SDSS0110 + 1326

0.46

0.69

0.347

1.720

1.690

254.65

2.865

1.91E + 09

4.61E + 07

3.01E + 08

2.25E + 09

SDSS0238 − 0005

0.47

0.79

0.243

1.730

1.702

258.63

3.412

1.87E + 09

3.70E + 07

4.69E + 07

1.95E + 09

SDSS0246+0041

0.80

0.47

0.735

3.590

3.519

573.02

3.514

2.88E+08

2.03E+08

5.85E+09

6.34E+09

SDSS0303+0054

0.92

0.27

0.207

4.600

4.505

614.05

2.840

1.49E+08

2.25E+09

2.88E+08

2.68E+09

SDSS0833+0702

0.54

0.59

0.351

2.010

1.968

290.08

2.889

1.47E+09

1.57E+08

2.45E+08

1.88E+09

SDSS0924 + 0024

0.52

0.62

2.404

1.470

1.324

425.88

2.881

3.30E + 09

5.74E + 07

2.43E + 11

2.47E + 11

SDSS0949+0322

0.52

0.62

0.408

1.600

1.509

291.89

2.880

2.53E+09

6.65E+07

5.83E+08

3.18E+09

SDSS1047 + 0523

0.38

0.68

0.384

1.000

0.932

140.19

2.253

1.23E + 10

4.58E + 08

2.90E + 10

4.18E + 10

b, c

SDSS1143+0009

0.60

0.53

0.409

2.470

2.393

379.70

2.905

8.27E+08

1.29E+08

6.07E+08

1.56E+09

SDSS1212 − 0123

0.47

0.59

0.337

1.690

1.657

261.49

3.118

2.01E + 09

1.76E + 08

1.66E + 10

1.88E + 10

SDSS1348+1834

0.59

0.54

0.319

2.460

2.400

352.99

2.902

8.37E+08

1.84E+08

1.27E+08

1.15E+09

SDSS1411 + 1028

0.54

0.70

0.180

2.010

1.975

202.63

3.441

1.47E + 09

8.87E + 06

1.29E + 07

1.49E + 09

SDSS1414 − 0132

0.67

0.39

0.729

2.850

2.728

480.64

2.301

5.52E + 08

3.05E + 08

1.13E + 11

1.14E + 11

SDSS1429+5759

1.07

0.36

0.568

5.700

5.517

810.37

3.547

8.83E+07

4.18E+08

2.76E+09

3.27E+09

SDSS1434 + 5335

0.52

0.62

4.357

1.320

1.137

439.49

2.880

4.70E + 09

3.21E + 07

1.76E + 12

SDSS1435+3733

0.42

0.62

0.140

1.580

1.554

169.85

2.256

2.50E+09

4.73E+08

8.19E+08

3.79E+09

SDSS1506 − 0120

0.45

0.71

1.057

1.330

1.255

257.22

2.856

4.44E + 09

2.56E + 08

1.38E + 10

1.85E + 10

b, c

SDSS1519 + 3536

0.57

0.35

1.367

2.200

2.113

422.68

1.733

1.15E + 09

6.44E + 07

1.26E + 12

SDSS1524+5040

0.73

0.44

0.596

3.240

3.142

531.79

2.928

3.83E+08

1.07E+08

2.94E+09

3.43E+09

SDSS1529 + 0020

0.39

0.67

0.170

1.270

1.228

137.92

2.245

5.22E + 09

2.98E + 08

2.59E + 09

8.10E + 09

SDSS1548+4057

0.62

0.32

0.192

2.630

2.556

359.75

1.736

6.93E+08

3.98E+08

3.64E+09

4.74E+09

SDSS1558+2642

1.06

0.30

0.681

5.620

5.418

824.56

2.956

9.13E+07

6.09E+08

5.75E+09

6.45E+09

SDSS1646 + 4223

0.53

0.49

1.595

1.570

1.419

422.70

2.282

2.69E + 09

8.68E + 07

1.10E + 12

SDSS1705 + 2109

0.52

0.50

0.815

1.630

1.532

377.68

2.281

2.40E + 09

2.20E + 07

1.86E + 11

1.88E + 11

SDSS1718+6101

0.53

0.60

0.678

1.860

1.802

359.97

2.886

1.65E+09

7.86E+07

3.56E+09

5.29E+09

SDSS1724 + 5620

0.42

0.86

0.333

1.410

1.368

190.02

3.483

3.64E + 09

<5.0E07

2.10E + 08

3.85E + 09

SDSS1731 + 6233

0.34

0.94

0.268

1.000

0.962

90.95

2.794

1.23E + 10

<5.0E07

1.09E + 08

1.24E + 09

SDSS2112+1014

1.06

0.19

0.109

5.650

5.516

682.31

1.742

9.00E+07

2.29E+08

1.98E+08

5.17E+08

SDSS2114-0103

0.70

0.54

0.413

3.130

3.063

463.72

3.493

4.23E+08

1.66E+07

7.62E+08

1.20E+09

SDSS2120-0058

0.64

0.50

0.469

2.710

2.615

427.85

2.913

6.37E+08

1.65E+08

1.06E+09

1.86E+09

SDSS2123 + 0024

0.31

0.65

0.149

0.980

0.946

75.72

1.690

1.33E + 10

<5.0E07

3.30E + 09

1.66E + 10

SDSS2132 + 0031

0.39

0.82

0.328

1.160

1.101

149.49

2.826

7.20E + 09

1.77E + 08

6.06E + 07

7.44E + 09

SDSS2216 + 0102

0.41

0.63

0.216

1.150

1.071

180.10

1.484

7.43E + 09

4.43E + 08

5.83E + 09

1.37E + 10

SDSS2240 − 0935

0.41

0.63

0.265

1.280

1.227

169.38

2.254

5.08E + 09

4.47E + 08

1.00E + 10

1.55E + 10

SDSS2318 − 0935

0.52

0.74

2.534

1.450

1.311

430.92

3.428

3.45E + 09

2.74E + 07

2.64E + 11

2.68E + 11

b, c

SDSS2339-0020

0.93

0.34

0.674

4.660

4.526

706.93

2.948

1.44E+08

5.08E+08

5.00E+09

5.66E+09

Notes. * For IK Peg the values of P_sd and t_sd were computed based on the nuclear evolution timescale of the secondary as it is much shorter than the time required to bring the systems into contact by angular momentum loss. a) The system is representative for the progenitors of the current CV population. b) The mass ratio exceeds the critical value for stable mass transfer. c) The system has a CV formation times longer than the age of the galaxy. d) This system is probably not a PCEB but a detached CV in the period gap.

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