2011ApJ...726..113I

Query : 2011ApJ...726..113I

2011ApJ...726..113I - Astrophys. J., 726, 113 (2011/January-2)

Two wide planetary-mass companions to solar-type stars in Upper Scorpius.

IRELAND M.J., KRAUS A., MARTINACHE F., LAW N. and HILLENBRAND L.A.

Abstract (from CDS):

At wide separations, planetary-mass and brown dwarf companions to solar-type stars occupy a curious region of parameter space not obviously linked to binary star formation or solar system scale planet formation. These companions provide insight into the extreme case of companion formation (either binary or planetary), and due to their relative ease of observation when compared to close companions, they offer a useful template for our expectations of more typical planets. We present the results from an adaptive optics imaging survey for wide (∼50-500 AU) companions to solar-type stars in Upper Scorpius. We report one new discovery of a ∼14 MJ companion around GSC 06214-00210and confirm that the candidate planetary-mass companion 1RXS J160929.1-210524 detected by Lafrenière et al. is in fact comoving with its primary star. In our survey, these two detections correspond to ∼4% of solar-type stars having companions in the 6-20 MJ mass and ∼200-500 AU separation range. This figure is higher than would be expected if brown dwarfs and planetary-mass companions were drawn from an extrapolation of the binary mass function. Finally, we discuss implications for the formation of these objects.

Abstract Copyright: ∼

Journal keyword(s): brown dwarfs - infrared: planetary systems - planetary systems

Simbad objects: 65

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Number of rows : 65
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 V* DL Tau Or* 04 33 39.0767679288 +25 20 38.101382952 14.04 14.59 13.40 11.85 10.89 K7Ve 372 0
2 HD 44627 Er* 06 19 12.9130449912 -58 03 15.527294208   10.01 9.205   8.185 K1V(e) 207 1
3 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 2144 1
4 V* CT Cha B LM* 11 04 08.44 -76 27 18.0           M8 56 0
5 V* CT Cha Or* 11 04 09.0989256840 -76 27 19.329779664   13.44 13.00   10.89 K7Ve 145 0
6 CHXR 73 Or* 11 06 28.7641341696 -77 37 33.140151012         15.78 M3e 55 1
7 2MASS J15355780-2324046 TT* 15 35 57.8066655408 -23 24 04.590783648   13.1       K3 29 0
8 V* GQ Lup B LM* 15 49 12.05 -35 39 05.1           M9e 165 1
9 V* GQ Lup Or* 15 49 12.1053805848 -35 39 05.058139788 12.19 12.76 11.66 11.15   K7Ve 334 1
10 2MASS J15500499-2311537 Y*? 15 50 04.9796262288 -23 11 53.716923132       13.1   M2 14 0
11 HD 141618 * 15 50 56.4122254920 -25 34 19.038247716   10.28 9.74 9.4   G0/2 29 0
12 RX J1551.1-2402 Or* 15 51 06.6015760608 -24 02 19.119444468   15.08 14.465 13.5 12.057 ~ 30 0
13 RX J155720.1-233847 Or* 15 57 19.9921604088 -23 38 49.968268224           M0V 29 0
14 V* V1148 Sco BY* 15 57 34.3068411912 -23 21 12.268691748         11.27 M1IVe 47 0
15 RX J1557.8-2305 Or* 15 57 50.0330824392 -23 05 09.511498176       12.7   ~ 34 0
16 RX J1558.1-2405 mul 15 58 06.5 -24 05 14           ~ 5 0
17 CD-23 12602 TT* 15 58 12.7076690664 -23 28 36.528700008   11.16 10.36 9.9   G9V 54 0
18 V* V1150 Sco Or* 15 59 59.9527097064 -22 20 36.759121188     11.99   10.90 M1V 40 0
19 RX J1600.7-2127 TT* 16 00 42.7696857312 -21 27 38.014214220   14.2 12.941 11.7 11.109 K7 28 0
20 RX J1601.1-2113 Or* 16 01 08.0169370824 -21 13 18.555249216   13.9 12.511 12.0 10.785 M0 35 0
21 BD-19 4288 TT* 16 01 58.2155255520 -20 08 11.954643036   11.58 10.501 9.9 9.275 G9IV(e) 47 0
22 RX J1602.0-2221 TT* 16 02 00.3949060416 -22 21 23.842479852   14.9 13.591 12.8 11.265 M1.0e 47 0
23 V* V1153 Sco Or* 16 02 08.4542714448 -22 54 59.082274404           M1V 34 0
24 RX J1602.8-2401B Or* 16 02 51.1649651376 -24 01 50.297892708         14.65 M7-8 41 0
25 RX J1602.8-2401 Or* 16 02 51.2266141056 -24 01 57.465435864   13.81 12.58 12.01 10.79 K4 42 0
26 CD-23 12654 * 16 02 52.4315317463 -24 02 22.620186502   12.421 11.104 10.794   K0 11 0
27 CD-22 11315 TT* 16 03 35.4984951600 -22 45 56.119524588   11.94 10.969 10.6 9.784 G9 43 0
28 [PGZ2001] J160341.8-200557 Or* 16 03 41.8727241960 -20 05 57.702909336           M2e 36 0
29 RX J1603.9-2031 TT* 16 03 57.6711677256 -20 31 05.604697272   13.4   11.73 10.92 K5 75 0
30 RX J1604.3-2130 X 16 04.3 -21 30           ~ 41 0
31 ScoPMS 27 Or* 16 04 47.7531686256 -19 30 22.916271132   12.43 11.254   9.822 K3IVe 59 0
32 [PGZ2001] J160517.9-202420 Or* 16 05 17.9148620640 -20 24 19.642683240           M3e 27 0
33 ScoPMS 28 TT* 16 05 27.2683550136 -19 38 46.707624132     14.05     M1V 27 0
34 RX J1606.2-2036 TT* 16 06 12.5411330016 -20 36 47.292443280   14.0 12.737 12.5 10.838 K5 31 0
35 1RXS J160633.4-203636 Y*O 16 06 31.6906138416 -20 36 23.291827776   14.561 13.146 12.488 11.006 K6 22 0
36 [PGZ2001] J160643.8-190805 Or* 16 06 43.8620267616 -19 08 05.549732448           K6e 55 0
37 RX J1607.0-2036 Or* 16 07 03.5541108312 -20 36 26.875993608   13.54 12.232 11.75 10.334 M0 24 1
38 [PGZ2001] J160707.7-192715 Or* 16 07 07.6782040032 -19 27 16.258493196   15.6       M2e 28 0
39 1RXS J160801.7-202755 Or* 16 08 01.4122955928 -20 27 41.662654920     12.72     M0.0e 36 0
40 [T64] 3 Or* 16 08 23.2468097568 -19 30 00.977031108         11.79 K9e 75 0
41 [PGZ2001] J160825.1-201224 Or* 16 08 25.1086369944 -20 12 24.607373976           M1e 30 0
42 GSC 06205-00954 Or* 16 08 31.3764180336 -18 02 41.465215824   14.0       M0 28 0
43 GSC 06209-01501 Or* 16 08 56.7301379616 -20 33 45.837138816   13.3       K5 35 0
44 [PGZ2001] J160900.7-190852 TT* 16 09 00.7592409720 -19 08 52.680361920           M1.0V 94 0
45 [PGZ2001] J160916.8-183522 Or* 16 09 16.8530258808 -18 35 22.645050792   16.1       M2e 20 0
46 RX J1609.5-2105 Or* 16 09 30.3075290712 -21 04 58.943800992   14.21 12.77 12.25 10.99 M0.0e 103 0
47 RX J1609.5-2105B LM* 16 09 30.377 -21 04 56.97           ~ 123 0
48 1RXS J160941.7-221803 TT* 16 09 40.9929383688 -22 17 59.527565484   13.8 12.561   10.655 M0e 45 0
49 [PGZ2001] J160954.4-190654 Or* 16 09 54.4143597864 -19 06 55.045336464   15.9       M1e 40 0
50 [PGZ2001] J161031.9-191305 Or* 16 10 31.9513754952 -19 13 06.080941452   15.14 13.56 13.31   K7e 42 0
51 Wa Oph 1 Or* 16 11 08.9057560608 -19 04 46.976720052     12.073   10.194 K2IV(e) 75 0
52 ScoPMS 45 Or* 16 11 20.5774543272 -18 20 55.035502656     12.49     K5IV 44 0
53 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
54 1RXS J161303.8-225745 TT* 16 13 02.7175229544 -22 57 44.493041124   12.6 11.813   10.265 K5 41 0
55 RX J1613.8-1835 Or* 16 13 47.5038712032 -18 35 00.393794160           M2e 27 0
56 2MASS J16140211-2301021 TT* 16 14 02.1139873416 -23 01 02.188083216   12.2       G4 44 0
57 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
58 CD-22 11502 TT* 16 19 33.9664198296 -22 28 29.466255036   12.72 11.312   10.065 K1IV 45 0
59 RX J1620.7-2348 TT* 16 20 45.9589363608 -23 48 20.906432316           ~ 31 0
60 GSC 06214-00210 TT* 16 21 54.6676915200 -20 43 09.140591496   13.62 12.38 12.11 11.08 M1e 89 0
61 NAME GSC 06214-00210B LM* 16 21 54.678 -20 43 11.33           ~ 102 0
62 CD-22 11523 Or* 16 23 07.8224200992 -23 00 59.996370852   13.10 11.85 11.71 10.290 K5 48 0
63 HD 147808 TT* 16 24 51.3636976776 -22 39 32.558556276   10.69 9.81   8.58 G9IVe 47 0
64 * alf PsA PM* 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1303 3
65 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1285 0

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