2015A&A...576A..44K


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.09CEST23:49:54

2015A&A...576A..44K - Astronomy and Astrophysics, volume 576A, 44-44 (2015/4-1)

Hot subdwarf binaries from the MUCHFUSS project. Analysis of 12 new systems and a study of the short-period binary population.

KUPFER T., GEIER S., HEBER U., OSTENSEN R.H., BARLOW B.N., MAXTED P.F.L., HEUSER C., SCHAFFENROTH V. and GAENSICKE B.T.

Abstract (from CDS):

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like massive white dwarfs (M>1.0M), neutron stars, or stellar-mass black holes. The existence of such systems is predicted by binary evolution theory, and recent discoveries indicate that they exist in our Galaxy. We present orbital and atmospheric parameters and put constraints on the nature of the companions of 12 close hot subdwarf B star (sdB) binaries found in the course of the MUCHFUSS project. The systems show periods between 0.14 and 7.4days. In nine cases the nature of the companions cannot be constrained unambiguously whereas three systems most likely have white dwarf companions. We find that the companion to SDSSJ083006.17+475150.3 is likely to be a rare example of a low-mass helium-core white dwarf. SDSSJ095101.28+034757.0 shows an excess in the infrared that probably originates from a third companion in a wide orbit, which makes this system the second candidate hierarchical triple system containing an sdB star. SDSSJ113241.58-063652.8 is the first helium deficient sdO star with a confirmed close companion. This study brings to 142 the number of sdB binaries with orbital periods of less than 30 days and with measured mass functions. We present an analysis of the minimum companion mass distribution and show that it is bimodal. One peak around 0.1M corresponds to the low-mass main sequence (dM) and substellar companions. The other peak around 0.4M corresponds to the white dwarf companions. The derived masses for the white dwarf companions are significantly lower than the average mass for single carbon-oxygen white dwarfs. In a Teff-logg diagram of sdB+dM companions, we find signs that the sdB components are more massive than the rest of the sample. The full sample was compared to the known population of extremely low-mass white dwarf binaries as well as short-period white dwarfs with main sequence companions. Both samples show a significantly different companion mass distribution indicating either different selection effects or different evolutionary paths. We identified 16 systems where the dM companion will fill its Roche Lobe within a Hubble time and will evolve into a cataclysmic variable; two of them will have a brown dwarf as donor star. Twelve systems with confirmed white dwarf companions will merge within a Hubble time, two of them having a mass ratio to evolve into a stable AMCVn-type binary and another two which are potential supernova Ia progenitor systems. The remaining eight systems will most likely merge and form RCrB stars or massive C/O white dwarfs depending on the structure of the white dwarf companion.

Abstract Copyright:

Journal keyword(s): subdwarfs - binaries: close

VizieR on-line data: <Available at CDS (J/A+A/576/A44): tablea2.dat tablea3.dat refs.dat>

Status at CDS:   All or part of tables of objects could be ingested in SIMBAD; there are some issues with cross-identifications or classifications.

Simbad objects: 145

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Number of rows : 145

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 PG 2359+197 HS* 00 02 08.4740092058 +19 59 13.139488666   14.40       sdB 10 0
2 Ton S 135 HS* 00 03 22.0702789192 -23 38 58.024033862   13.054 13.30     sdBHe1 28 0
3 PG 0001+275 HS* 00 03 55.6036449241 +27 48 37.466035016   13.16 13.32 13.60   sdB2VIIHe3 15 0
4 PB 5916 HS* 00 23 23.9887548499 -00 29 53.308892181   15.50 15.58 15.93   sdB 16 0
5 KPD 0025+5402 HS* 00 28 28.9696659816 +54 19 15.029217172 12.85 13.76 13.91 14.09   sdB 11 0
6 EC 00404-4429 HS* 00 42 48.3760875894 -44 13 25.221410962   13.0 13.4     sdB 12 0
7 NGC 188 2091 SB* 00 47 52.2127850456 +85 19 08.307009440 15.363 16.084 16.260 16.285 16.394 ~ 14 0
8 GD 656 HS* 00 51 03.9221942624 -19 59 59.320207505   14.56 14.83 15.01   sdBHe0 27 0
9 Ton S 183 HS* 01 01 17.5721148386 -33 42 45.436579437   12.39 14.631 12.95   sdB 39 0
10 Feige 11 HS* 01 04 21.6744758331 +04 13 37.051396308 10.847 11.826 12.065 12.183 12.324 sdB2VIHe4 110 0
11 GD 687 HS* 01 10 18.6196133289 -34 00 25.712423018   13.89 14.08 14.39   sdBHe1 29 0
12 PB 6373 HS* 01 18 57.2016522910 -00 25 46.517981728   14.26 14.804     sdB 15 0
13 FBS 0117+396 HS* 01 20 22.9394543891 +39 50 59.432523537   15.15 15.34     sdB 17 0
14 PG 0133+114 HS* 01 36 26.1919154277 +11 39 32.098577898   10.74       sdB1.5VIIHe4 34 0
15 CD-24 731 HS* 01 43 48.5446090530 -24 05 10.224853422   11.6 11.9     sdBHe0 55 0
16 EC 02200-2338 HS* 02 22 19.8376234140 -23 24 55.936940852   11.79 12.01     sdB 10 0
17 HE 0230-4323 HS* 02 32 54.6776909015 -43 10 27.797963721     13.78     sdB 24 0
18 PG 0319+055 HS* 03 21 38.6741955276 +05 38 40.148465388   15.02 15.05 15.16   sdB 13 1
19 Cl Melotte 20 488 HS* 03 21 39.6299805376 +47 27 18.797888080   11.54 11.73 11.83 11.55 sdB 12 0
20 Lan 30 HS* 03 28 55.2613622991 +50 35 29.667268017 13.644 14.3 14.3     sdB 9 0
21 BPS CS 22169-0001 HS* 03 56 23.3188014234 -15 09 19.440291006 11.50 12.61 12.88     sdB 17 0
22 V* IQ Cam HS* 04 26 06.8650071405 +54 28 17.100742176 14.21 14.86 14.66     sdB 56 0
23 KUV 04421+1416 HS* 04 44 56.8984561294 +14 21 50.176087928   15.28       sdB 22 0
24 HD 269696 HS* 05 31 40.3598545037 -69 53 02.158611829 9.74 10.92 11.15     sdB+dM 171 0
25 HE 0532-4503 HS* 05 33 40.5167311535 -45 01 35.263228367 14.89 15.86 16.08     sdB 17 0
26 CPD-64 481 HS* 05 47 59.3026988563 -64 23 03.120980455   10.97 11.17     sdB 31 0
27 CPD-20 1123 HS* 06 06 13.3952122513 -20 21 07.271222937   11.75 11.80 11.84 11.90 sdB3VHe15 19 0
28 HD 49798 HXB 06 48 04.7000758397 -44 18 58.432035331 6.758 8.017 8.287 8.391 8.543 sdO6 283 0
29 V* V470 Cam HS* 07 10 42.0512018720 +66 55 43.520280054           sdB+dM 92 1
30 EGB 5 HS* 08 11 12.7659921835 +10 57 17.099261604     14.2     sdB 47 1
31 GSC 00196-00617 HS* 08 20 53.5359206605 +00 08 43.500178494   15.03 15.17 15.54 15.91 sdB+dM 27 1
32 SDSS J082332.08+113641.8 WD* 08 23 32.0889010116 +11 36 41.913952908           DAB 8 0
33 PG 0826+480 HS* 08 30 06.1710915332 +47 51 50.364839023   16.1   16.28   sdB 17 0
34 PG 0839+399 HS* 08 43 12.7071071970 +39 44 49.809690592 12.918 14.045 14.324 14.445 14.587 sdB 34 0
35 Ton 358 HS* 08 52 54.6285015049 +31 43 36.648355745   14.29 14.59 14.78   sdOA 17 0
36 PG 0850+170 HS* 08 53 23.6574532327 +16 49 35.267448975   13.72 14.00 14.26   sdB 24 0
37 PG 0907+123 HS* 09 10 25.4345104999 +12 08 27.079359194   13.76 13.92 14.19   sdB2VIHe2 25 0
38 PG 0918+029 HS* 09 21 28.2141418281 +02 46 02.253964445 11.975 13.056 13.327 13.456 13.615 sdB1VIIHe6 100 0
39 Ton 13 HS* 09 22 39.8342560495 +27 02 25.427174461   12.27 12.658     sdB 29 0
40 HE 0929-0424 HS* 09 32 02.1129275405 -04 37 36.935103503   16.11 16.16     sdB 17 0
41 PG 0934+186 HS* 09 37 16.2698884296 +18 25 11.248855369   12.85 13.13 13.44   sdB 18 0
42 PG 0940+068 WD* 09 42 55.0397535559 +06 35 37.185711341   13.50 13.69 14.01   DA2: 21 0
43 Ton 22 HS* 09 43 54.5491806280 +27 46 59.171256831   12.95 13.24     sdB 13 0
44 PG 0948+041 HS* 09 51 01.2880593502 +03 47 56.959794907   15.77 15.817     sdOB 16 0
45 PG 0948+632 HS* 09 52 38.9347628520 +62 58 18.954850932   14.95 15.0     sdB 15 0
46 GD 108 HS* 10 00 47.2462037648 -07 33 30.777365253 12.406 13.349 13.563 13.662 13.781 sdB 129 1
47 PG 1000+408 HS* 10 03 54.2700940565 +40 34 18.121525685 11.919 12.988 13.318 13.465 13.631 sdO 25 0
48 V* XY Sex HS* 10 20 14.4717584584 -08 53 46.404001164   14.46 14.43     sdB 33 0
49 SDSS J102151.64+301011.9 HS* 10 21 51.6449894922 +30 10 11.977475498   17.9   18.8   sdB 7 0
50 TYC 7709-376-1 HS* 10 23 21.8948397206 -37 36 59.904200339   11.43 11.51     sdB+dM 14 0
51 EC 10246-2707 HS* 10 26 56.4746927507 -27 22 57.098414117   14.56 14.77 14.85   sdB+dM 17 0
52 PG 1032+406 HS* 10 35 16.5804303572 +40 21 14.420356201   11.38 11.81     sdB 34 0
53 PG 1043+760 HS* 10 47 04.9686856449 +75 44 22.970014499   12.97       sdB 21 0
54 PG 1047-046 HS* 10 50 26.8999812762 -04 52 35.718535422   14.68       sdB+D 21 0
55 HE 1059-2735 HS* 11 01 24.8685849184 -27 51 41.914369709   15.21 15.56     sdO 8 0
56 Feige 36 HS* 11 04 31.6441819696 +24 39 42.691859421   12.87 12.78     sdB 50 0
57 Ton 62 HS* 11 13 04.4869938454 +29 07 46.226753961   14.2 14.086     sdB 21 0
58 PG 1115-065 HS* 11 18 11.6489570021 -06 47 32.162359362   14.83 15.08 15.59   sdO 10 0
59 Ton 63 HS* 11 19 04.8239898746 +29 51 52.663724259   14.11 14.37 14.61   sdB 27 0
60 PG 1130-063 HS* 11 32 41.5865487797 -06 36 52.766442878   16.2   16.0   sdO 10 0
61 PG 1136-003 HS* 11 38 40.6875981471 -00 35 31.775694237   13.75 14.0     sdB1VIIeHe1 22 0
62 Feige 48 HS* 11 47 14.4977747924 +61 15 31.790488292   13.12 13.28     sdB 111 0
63 PG 1230+052 HS* 12 33 12.5636111795 +04 57 37.602972302   13.26       sdB 19 0
64 PG 1232-136 HS* 12 35 18.7429127024 -13 55 08.876914086   13.06 13.27     sdB 24 0
65 EC 12408-1427 HS* 12 43 30.0486893331 -14 43 49.216301886   12.63 12.82 13.19   sdB 8 0
66 BD-07 3477 HS* 12 44 20.2386520980 -08 40 16.848587212   10.46 10.594 10.895   sdB2VIIHe3 249 1
67 PG 1244+113 HS* 12 47 06.6308614182 +11 03 13.361194734   13.05       sdB 20 0
68 [RWW88] CS 124636.2-631549 HS* 12 49 37.6226785889 -63 32 09.898408536   14.87 14.59 14.80 14.11 sdB6 13 0
69 GD 319 SB* 12 50 04.5262298 +55 06 01.800186   12.40 12.26 12.15   sdB+? 71 0
70 PG 1248+164 HS* 12 50 50.2676038282 +16 10 03.168524469   14.40 14.460     sdB 18 0
71 Ton 139 HS* 12 56 04.8834179102 +28 07 19.520794893   12.91 12.81     sdB+F8V 45 0
72 LB 27 HS* 13 02 41.7576687260 +27 40 42.172544649   12.93 11.97     sdO6.5VIIpHe35 35 1
73 HE 1318-2111 HS* 13 21 15.6370872757 -21 27 17.630329433   14.57 14.77     sdO 10 0
74 Feige 81 HS* 13 31 53.5518978105 +15 41 17.571717155   13.24 13.507     sdBpec 38 0
75 EC 13332-1424 HS* 13 35 53.4855824674 -14 40 13.100951844   13.15 13.38 13.75   sdB 7 0
76 V* NY Vir HS* 13 38 48.1466489725 -02 01 49.209465866   13.43 13.66 13.75   sdB1VIIHe1 191 1
77 Ton 168 HS* 13 46 32.6638537676 +28 17 22.809540369   14.8       sdB 15 0
78 Ton 183 HS* 14 05 59.8352037276 +31 24 36.709455824   13.31 13.49 13.81   sdB 15 0
79 CD-30 11223 HS* 14 11 16.1539612427 -30 53 03.692295694   11.90 11.90     sdB+DA 42 0
80 HE 1415-0309 HS* 14 18 20.9258199666 -03 22 53.996510033   16.6   16.3   sdB 6 0
81 [CW83] 1419-09 HS* 14 22 40.3208831253 -09 17 21.785128966     12.09     sdOB 14 0
82 PG 1421-121 HS* 14 24 08.7747046050 -12 20 20.222966579   15.4   15.77   sdB 11 0
83 PG 1432+159 HS* 14 35 18.9439672422 +15 40 14.372230565   13.63       sdB 26 1
84 PG 1438-029 HS* 14 40 52.8285880261 -03 08 52.659377826   13.64 13.79 14.23   sdB 13 0
85 PG 1439-013 HS* 14 42 27.4793116992 -01 32 45.892174380   12.74 13.873     sdB 16 0
86 PG 1448-052 HS* 14 51 13.1207884830 -05 23 16.874186898   14.96       sdO8VIIHe0 14 0
87 PG 1452+198 HS* 14 54 39.8153738912 +19 37 00.854836876   12.30 12.94     sdB0.5VIIIHe7 16 0
88 PG 1502+113 HS* 15 05 13.5276584513 +11 08 36.709014873   15.14 15.38 15.87   sdB 10 0
89 SBSS 1506+498 SB* 15 08 29.0269059312 +49 40 50.920888799   17.5   17.6   sd 12 0
90 Ton 788 HS* 15 14 32.4560596705 +24 10 40.704992828   13.03 13.21     sdB 25 0
91 PG 1519+640 HS* 15 20 31.3674975190 +63 52 08.252610798   12.03 12.18     sdB1.5VIIHe5 34 0
92 SDSS J152222.14-013018.3 HS* 15 22 22.1527101753 -01 30 18.311971576   17.3   17.7   sdB 10 0
93 PG 1528+104 HS* 15 31 10.3890511008 +10 15 00.931695481   13.90 14.14     sdB 13 0
94 FBS 1531+381 HS* 15 33 49.4443951104 +37 59 28.094103704     13.08     sdB+dM 29 0
95 Ton 245 HS* 15 40 23.4584728304 +26 48 29.782790077   13.65 13.83     sdB 37 0
96 PG 1558-007 HS* 16 01 13.9991132926 -00 51 42.011114144   13.49 13.54     sdB3VIIHe3 13 1
97 PG 1619+522 HS* 16 20 38.7298845239 +52 06 08.805926996   13.36       sdB0.5VIIHe7 28 0
98 PG 1621+476 HS* 16 22 56.6649994821 +47 30 51.124980311   16.07 16.19     sdB+dM 31 0
99 KUV 16256+4034 HS* 16 27 16.5353673302 +40 27 28.849082786   12.41 12.64 13.00   sdB 13 0
100 PG 1627+017 HS* 16 29 35.3015296881 +01 38 18.794470062   11.32       sdB3VIIHe3 38 0
101 PG 1648+536 HS* 16 49 59.8504678102 +53 31 31.718293247 12.811 13.835 14.050 14.140 14.264 sdB1VIIHe0 20 0
102 PG 1652+307 HS* 16 54 04.2605980127 +30 37 01.825482769   15.20 15.41 15.77   sdB 11 0
103 PG 1716+426 HS* 17 18 03.8584285848 +42 34 12.566188858   13.69 13.97     sdB2VIIHe3 97 0
104 PG 1724+278 HS* 17 26 24.0995620761 +27 44 19.357269015   15.94       sdOB 9 0
105 PG 1725+252 HS* 17 27 57.3822581233 +25 08 35.694002450   11.54 13.01     sdB1.5VIIHe2 22 0
106 [CW83] 1735+22 HS* 17 37 26.4243211327 +22 08 57.714914770   11.51 11.65     sdB+A? 18 0
107 HS 1741+2133 HS* 17 43 19.0311359264 +21 32 37.570663621   13.82 13.99 14.21   sdOB 8 0
108 PG 1743+477 HS* 17 44 26.3960105328 +47 41 46.919987620   13.68 13.79 13.99   sdB2VIIHe7 27 0
109 PSR J1802-2124 Psr 18 02 05.44 -21 24 02.9           ~ 58 1
110 OGLE BUL-SC16 335 HS* 18 09 48.2261053694 -26 41 49.488098209       16.04   sdB+dM 16 0
111 PSR J1816+4510 Psr 18 16 35.9314 +45 10 33.864           ~ 68 0
112 FBS 1832+631 SB* 18 32 49.0270886482 +63 09 10.594442629     16.5     ~ 9 0
113 HD 171858 HS* 18 37 56.6714354909 -23 11 35.191816222   9.64 9.85     sdB 36 0
114 FBS 1903+432 HS* 19 05 06.3764795541 +43 18 31.219151136   15.08 15.48     sdB 24 1
115 SDSS J192059.78+372220.0 HS* 19 20 59.7745395144 +37 22 20.019977086           sdB 7 0
116 KIC 1868650 HS* 19 26 09.4423532123 +37 20 08.165121260   13.60 13.63 14.05 13.96 sdB+dM 22 0
117 KIC 11558725 HS* 19 26 34.1086786586 +49 30 29.559195885           sdB 27 1
118 KPD 1930+2752 HS* 19 32 14.8086352823 +27 58 35.444970697 12.80 13.75 13.82     sdB 145 0
119 Kepler-451 HS* 19 38 32.6124172412 +46 03 59.139156733   12.17 12.69 12.46 12.399 sdB+dM 52 0
120 KPD 1946+4340 HS* 19 47 42.8878643003 +43 47 30.757113602 13.05 14.06 14.23 14.92   sdOB+D 47 0
121 KIC 10553698 HS* 19 53 08.3855210679 +47 43 00.181310721           sdB 18 1
122 V* V1828 Aql HS* 20 20 00.4586719589 +04 37 56.519765906   12.9   13.34   sdOB+dM 54 1
123 EC 20182-6534 HS* 20 22 51.3030955661 -65 25 20.436007196 12.17 13.09 13.29 13.58   sdB 6 0
124 EC 20260-4757 HS* 20 29 34.1085880188 -47 47 26.294054773 12.47 13.55 13.73 14.12   sdB 8 0
125 EC 20369-1804 HS* 20 39 46.3766405523 -17 54 04.925849058 11.96 13.08 13.35 13.69   sdB 6 0
126 KPD 2040+3955 HS* 20 42 33.9314973864 +40 05 41.602431194 13.62 14.34 14.48 14.59   sdB 14 0
127 SDSS J204613.40-045418.7 HS* 20 46 13.3997090017 -04 54 18.732111345   15.96 16.32     sdB 9 0
128 HS 2043+0615 HS* 20 46 20.7938017614 +06 26 25.337245421   16.9   16.20   sdB 9 0
129 JL 82 HS* 21 36 01.2956788748 -72 48 27.221376356 11.26 12.44 12.41 12.67   sdB 31 0
130 HE 2135-3749 HS* 21 38 44.1995614729 -37 36 14.999700706 12.66 13.68 13.9     sdB 15 0
131 HE 2150-0238 HS* 21 52 35.5113152628 -02 24 29.521800404   15.8   16.2   sdB 11 0
132 EC 21556-5552 HS* 21 59 00.6886957803 -55 38 03.717120481 11.94 12.71 12.99     sdB 6 0
133 KPD 2215+5037 HS* 22 17 20.7352508834 +50 52 58.928654168 12.66 13.59 13.64 14.00   sdB 14 0
134 PHL 244 HS* 22 22 58.0610736752 -18 19 10.025408755   13.65 13.80 14.13   sdB 6 0
135 HS 2231+2441 HS* 22 34 21.4839930427 +24 56 57.390542495     14.20     sdB+dM 39 1
136 PB 7352 HB* 22 55 43.1873137783 -06 59 39.865173858   12.09 12.21     sd 15 0
137 PG 2254+067 HS* 22 56 38.3454122557 +06 56 51.180180245   15.18       sdB 11 0
138 LB 1516 HS* 23 01 56.1479060808 -48 03 48.478650608   12.74 13.02     sdB 25 0
139 Feige 108 HS* 23 16 12.4076810797 -01 50 35.101919760 11.671 12.736 12.973 13.079 13.218 sdB 61 0
140 GD 1110 HS* 23 19 24.4298732999 -08 52 37.939563242   12.78 12.95 13.27   sdB 27 0
141 PG 2317+046 HS* 23 19 55.3508853989 +04 52 34.657092915 11.493 12.630 12.876 12.950 12.994 sdO8VIIHe1 30 0
142 PG 2331+038 HS* 23 33 58.1989697432 +04 03 55.364658069   14.78 14.63 15.19   sdB1.5VIIHe2 18 0
143 HS 2333+3927 HS* 23 35 42.5026291966 +39 44 27.064897144     14.53     sdOB 35 0
144 PG 2345+318 HS* 23 48 07.5062970948 +32 04 48.037660206   13.99 14.19 14.66   sdB 26 0
145 FBS 2347+385 HS* 23 49 47.6462438580 +38 44 41.546916578   11.65 11.73 12.03   sdB 13 0

    Equat.    Gal    SGal    Ecl

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2020.07.09-23:49:54

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