2012MNRAS.419..287D

Query : 2012MNRAS.419..287D

2012MNRAS.419..287D - Mon. Not. R. Astron. Soc., 419, 287-303 (2012/January-1)

Is the common envelope ejection efficiency a function of the binary parameters?

DAVIS P.J., KOLB U. and KNIGGE C.

Abstract (from CDS):

We reconstruct the common envelope (CE) phase for the current sample of observed white dwarf main-sequence post-common envelope binaries (PCEBs). We apply multiregression analysis in order to investigate whether correlations exist between the CE ejection efficiencies, αCE inferred from the sample, and the binary parameters: white dwarf mass, secondary mass, orbital period at the point the CE commences, or the orbital period immediately after the CE phase. We do this with and without consideration for the internal energy of the progenitor primary giants' envelope. Our fits should pave the first steps towards an observationally motivated recipe for calculating αCE using the binary parameters at the start of the CE phase, which will be useful for population synthesis calculations or models of compact binary evolution. If we do consider the internal energy of the giants' envelope, we find a statistically significant correlation between αCE and the white dwarf mass. If we do not, a correlation is found between αCE and the orbital period at the point the CE phase commences. Furthermore, if the internal energy of the progenitor primary envelope is taken into account, then the CE ejection efficiencies are within the canonical range 0 < αCE ≤ 1, although PCEBs with brown dwarf secondaries still require αCE ≳ 1.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): methods: statistical - binaries: close - stars: evolution - white dwarfs

Simbad objects: 61

goto Full paper

goto View the references in ADS

Number of rows : 61
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GALEX J005245.1-005337 WD* 00 52 45.1155098856 -00 53 37.527493848           DA+dMe 25 0
2 G 269-70 CV* 00 59 28.8888716656 -26 31 05.656933319   16.22 15.94     M5.5 45 0
3 GALEX J011009.1+132617 ** 01 10 09.0943093512 +13 26 16.376271612           DA+dMe 37 0
4 WD 0137-349 WD* 01 39 42.8531929464 -34 42 39.577891392 14.60 15.33 15.30     DA3 101 0
5 V* FS Cet CV* 02 35 07.5939240480 +03 43 56.816311296 11.027 12.209 12.412 12.325 11.968 DA1+dM 379 0
6 SDSS J023804.39-000545.7 ** 02 38 04.3965744168 -00 05 45.710139732           DA+M 20 0
7 2MASS J02464256+0041372 ** 02 46 42.5574093864 +00 41 37.120650540           dMe+DA 25 0
8 US 3566 ** 03 03 08.3621593176 +00 54 43.921390896   18.9 18.06 18.1 16.00 DC+M4.5e 44 0
9 V* CC Cet CV* 03 10 54.9907539360 +09 49 25.681183680           DA2+dM 56 0
10 V* LL Eri SB* 03 32 43.4696700072 -08 55 39.254639412   14.482 13.586 13.377   DA+M2.5V 40 1
11 V* V471 Tau SB* 03 50 24.9666549840 +17 14 47.430910716   10.258 9.373   8.393 K2V+DA 697 0
12 V* RR Cae WD* 04 21 05.5631820426 -48 39 07.061113433 14.50 14.92 14.40     DA7.8 168 1
13 HZ 9 ** 04 32 23.7569977200 +17 45 02.672275356   14.28 13.93 14.21   DA3+dM 160 0
14 V* HR Cam WD* 07 17 09.7856917536 +74 00 40.535184924   14.91 14.97     DA2.6 76 0
15 V* IN CMa CV* 07 20 47.9109655416 -31 47 02.732961552           DAO+dM 93 0
16 GALEX J092452.4+002449 WD* 09 24 52.4057728488 +00 24 48.996111996           DA+dMe 29 0
17 HE 1013-0505 WD* 10 16 28.6043334312 -05 20 35.222859276     14.1     DAO.9 108 0
18 V* UZ Sex ** 10 28 34.8776549016 -00 00 29.394837900   13.89   13.9   DA3+dM 85 0
19 WG 17 ** 10 44 10.2360886800 -69 18 18.075899052   13.05 13.09     DA2+dM 64 0
20 GALEX J104738.2+052319 WD* 10 47 38.2443295416 +05 23 20.342931072           DA+M 19 0
21 PG 1115+166 WD* 11 17 55.1077994088 +16 21 29.251373436   15.16       DA+DB 52 0
22 LBQS 1140+0026 ** 11 43 12.5738603472 +00 09 26.642788056   18.45 18.3     DA4.0+dM 36 0
23 V* BE UMa CV* 11 57 44.8279856952 +48 56 18.313757772   15.437 15.373 14.867   DO+M1/5e 140 0
24 GALEX J121258.2-012309 ** 12 12 58.2526059240 -01 23 10.195008864           DA+dMe 42 0
25 V* EG UMa CV* 12 15 44.0979312096 +52 31 01.289011692   13.0 13.230 13.149   DA+dM 119 1
26 Ton 617 WD* 12 26 30.8730979008 +30 38 52.652529600   16.099 16.05     DA+M3 68 0
27 V* DE CVn ** 13 26 53.2712830008 +45 32 46.685746104   14.23 12.96 12.59   M3V+DA 64 0
28 PB 4095 ** 13 48 41.6345425224 +18 34 10.567727472   17       DA+M4 25 0
29 V* QS Vir SB* 13 49 52.0029035208 -13 13 37.000132212 14.27 14.98 14.40 14.37   DA3+dM 147 1
30 GALEX J141134.7+102840 ** 14 11 34.6996128888 +10 28 39.821940948     19.15     DA+M 26 0
31 2QZ J141451.7-013243 ** 14 14 51.7344040944 -01 32 42.791901720   19.31       DA+M 19 0
32 V* GK Vir ** 14 15 36.4128319176 +01 17 18.226779000   17.0       DAe+M 109 0
33 2MASS J14295117+5759492 SB* 14 29 51.1906922112 +57 59 48.976316700           M3+D 11 0
34 GD 337 WD* 14 34 43.2932850600 +53 35 21.186386556   16.06 16.09     DA3+K 66 0
35 SDSS J143547.87+373338.5 WD* 14 35 47.8735199952 +37 33 38.699663868           DA+M4.5 45 0
36 SDSS J150657.57-012021.7 ** 15 06 57.5783653464 -01 20 21.680881296           DA+M 20 0
37 CSO 579 WD* 15 19 21.7358813784 +35 36 25.804056348   17       DA+M 28 0
38 CBS 318 WD* 15 24 25.2151600800 +50 40 09.848642160   17       DA+dMe 31 0
39 GALEX J152933.2+002031 WD* 15 29 33.2587800336 +00 20 31.217685504           DA4+M: 33 0
40 GALEX J154846.0+405728 WD* 15 48 46.0071409320 +40 57 28.797200712           DA+M6 34 0
41 V* NN Ser RS* 15 52 56.1203524080 +12 54 44.429312196     16.51     DAO1+M4 287 0
42 GALEX J155808.4+264225 ** 15 58 08.4981349224 +26 42 25.774838280           DA+M4 11 0
43 SDSS J164615.60+422349.3 ** 16 46 15.6124491192 +42 23 49.275912264           DA+M 22 0
44 GALEX J170509.6+210904 WD* 17 05 09.6534830232 +21 09 04.442823828           DA+M 21 0
45 GALEX J171810.2+610113 WD* 17 18 10.1557623528 +61 01 14.025822096           DA+M 24 0
46 GALEX J172406.0+562004 CV* 17 24 06.1346969472 +56 20 03.087296880   15.65 16.24     DA+dMe 40 0
47 SDSS J173101.49+623316.0 ** 17 31 01.4958522528 +62 33 15.941287980           DA+dMe 27 0
48 HS 1857+5144 CV* 18 58 32.0885126712 +51 48 57.517565256   15.7   16.3   M5 24 0
49 GD 543 WD* 20 10 42.8802762840 +62 25 32.149712964   15   15.7   DA1.9 39 1
50 RX J2013.1+4002 ** 20 13 09.3685663800 +40 02 24.241439184     14.6     DAO+M2/3e 94 1
51 GALEX J211428.4-010357 ** 21 14 28.4153295168 -01 03 57.134555244           DA+M3 19 0
52 GALEX J212052.0-005827 WD* 21 20 51.9230881800 -00 58 27.284932776           DA+M 26 0
53 SDSS J212320.74+002455.5 WD* 21 23 20.7360003720 +00 24 55.588919796           DA+M 25 0
54 V* IK Peg dS* 21 26 26.6611049976 +19 22 32.310190344   6.294 6.064     kA6hA9mF0+DA 204 0
55 RX J2130.6+4710 XB* 21 30 18.4670033976 +47 10 07.403693592           DA+M3.5/4Ve 32 0
56 GALEX J213218.1+003159 WD* 21 32 18.1167337752 +00 31 58.847829420           DA+M 27 0
57 PB 5119 ** 22 16 16.5908353200 +01 02 05.704602828   17.9 18.60 17.7 17.68 DA+dMe 27 0
58 SDSS J224038.37-093541.4 WD* 22 40 38.3756323872 -09 35 41.421597792           DA+M 26 0
59 GD 245 CV* 22 58 48.1351624092 +25 15 43.908615894   13.699 13.650 13.833   DA2.2 74 0
60 SDSS J231825.23-093539.2 WD* 23 18 25.2329758344 -09 35 39.071089392           DA+M 23 0
61 GALEX J233928.3-002039 ** 23 39 28.3569467208 -00 20 40.174877724           DA+M 17 0

To bookmark this query, right click on this link: simbad:objects in 2012MNRAS.419..287D and select 'bookmark this link' or equivalent in the popup menu