2010AJ....140..510T


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.29CET01:27:54

2010AJ....140..510T - Astron. J., 140, 510-517 (2010/August-0)

Subsystems in nearby solar-type wide binaries.

TOKOVININ A., HARTUNG M. and HAYWARD T.L.

Abstract (from CDS):

We conducted a deep survey of resolved subsystems among wide binaries with solar-type components within 67 pc of the Sun. Images of 61 stars in the K and H bands were obtained with the Near-Infrared Coronagraphic Imager adaptive-optics instrument on the 8 m Gemini-South telescope. Our maximum detectable magnitude difference is about 5 mag and 7.8 mag at 0".15 and 0".9 separations, respectively. This enables a complete census of subsystems with stellar companions in the projected separation range from 5 to 100 AU. Out of seven such companions found in our sample, only one was previously known. We determine that the fraction of subsystems with projected separations above 5 AU is 0.12±0.04 and that the distribution of their mass ratio is flat, with a power-law index of 0.2±0.5. Comparing this with the properties of closer spectroscopic subsystems (separations below 1 AU), it appears that the mass-ratio distribution does not depend on the separation. The frequency of subsystems in the separation ranges below 1 AU and between 5 and 100 AU is similar, about 0.15. Unbiased statistics of multiplicity higher than 2, advanced by this work, provide constraints on star formation theory.

Abstract Copyright:

Journal keyword(s): binaries: general

Simbad objects: 51

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Number of rows : 51

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 2202 PM* 00 25 43.4614683861 -50 50 17.050369816   8.74 8.35     F0(pSr) 10 0
2 CD-51 102 PM* 00 25 43.6966846115 -50 50 33.580592686   10.04 9.49     ~ 5 0
3 HD 14071 Al* 02 16 09.31331 -21 00 29.5730   9.4       G3V 15 0
4 HD 28255 ** 04 24 12.20665 -57 04 16.8262           G1V+G6V 55 0
5 HD 29058 PM* 04 24 52.6617005443 -77 41 06.090801176   8.48 8.01     F7V 25 0
6 CPD-77 172B * 04 24 55.6501889864 -77 41 02.110696552   8.73 8.21     ~ 14 0
7 HD 29980 PM* 04 43 16.4092016199 -09 37 05.206150913   8.69 8.06     G3/5V 44 0
8 * iot Pic A PM* 04 50 55.3268408622 -53 27 41.230037114   5.86 5.57   5.18 F0V 43 0
9 * iot Pic B PM* 04 50 56.4982541083 -53 27 34.915853993   6.61 6.19     F4V 39 0
10 HD 33473B PM* 05 08 29.0194096580 -41 12 51.011893881       9.34 9.30 K1 10 1
11 HD 33473 PM* 05 08 29.9162411041 -41 12 49.327733412   7.40 6.752 6.62 8.69 G3V 57 1
12 HD 34725 ** 05 18 03.3005130772 -34 01 46.590346008   8.96 8.39     G3V 23 0
13 HD 34725B PM* 05 18 03.4634078200 -34 01 59.761991804   11.35 10.47     ~ 12 0
14 HD 39855 PM* 05 54 30.1556162384 -19 42 15.630751690 8.387 8.197 7.465 7.042 6.63 G8VFe-0.7 46 0
15 HD 41742 ** 06 04 40.10202 -45 04 44.1464           F5.5V+K4.5Vk: 60 0
16 HD 44665 ** 06 20 46.83558 -44 47 20.9987           G5V 34 0
17 HD 49503 ** 06 48 35.75364 -04 04 33.2784           F5/6V 28 0
18 HD 59100 PM* 07 26 57.6339732222 -34 18 55.887317941   8.82 8.19     G1.5V 43 0
19 HD 59099 PM* 07 26 58.6656379996 -34 18 43.627246969   7.51 7.03     F6V 38 0
20 * d02 Pup * 07 39 43.8131012500 -38 08 21.425791778   5.62 5.77     B5V 46 0
21 HD 61583 PM* 07 39 48.8248396052 -06 14 39.350810903   8.49 7.81     G3/5V 21 0
22 HIP 37333 PM* 07 39 49.0369975368 -06 14 54.752683850   10.61 9.93     ~ 10 0
23 BD-01 1792 PM* 07 39 50.1120552457 -01 31 20.375257583 10.35 10.05 9.23     G6V 91 0
24 HD 63583 PM* 07 44 20.6517082573 -69 30 39.640481186   9.67 8.83     K0IV/V 16 0
25 HD 66491 ** 08 03 23.89032 -13 12 13.3058           G8/K1III+(F/G) 14 0
26 CD-47 4475 * 08 53 30.2500858523 -48 24 02.844572858   10.27 9.77     G0 7 0
27 HD 76740 * 08 57 04.0701875884 -29 50 45.649099938   8.88 8.38     F5V 26 0
28 HD 77876 PM* 09 04 59.4989815019 -03 59 15.071134574   8.51 8.03     F7V 23 0
29 BD-03 2562B PM* 09 05 00.2032432352 -03 59 14.096875856   9.74 9.12     ~ 9 0
30 HD 78391 mul 09 07 52.52695 -07 08 20.5155           F8V 27 0
31 HD 81485B TT* 09 19 23.9798230026 -77 38 45.101986004   10.43 9.569     K0IVe 18 0
32 HD 81485A TT* 09 19 24.6583667993 -77 38 36.350741023   9.02 8.33     G7V 30 0
33 HD 81485 ** 09 19 24.66139 -77 38 36.3382     8.051   7.271 G7V+K0IVe 40 1
34 HD 81639 PM* 09 22 06.0681771172 -73 32 36.059047260   8.80 8.09     G7V 50 0
35 HD 81734 PM* 09 25 36.3182545624 -53 15 06.594935975   7.46 6.97     F7V 25 0
36 HD 84612 PM* 09 45 01.8468304728 -49 29 13.757411726   8.67 8.16     F8/G2IV/V 39 1
37 HD 84627 PM* 09 45 03.6605722381 -49 29 07.301262507   8.48 8.03     F8/G0V 47 1
38 HD 87743B PM* 10 06 38.5743352800 -19 18 30.974345627   9.528 8.924 8.54 8.39 ~ 14 0
39 HD 87743 PM* 10 06 38.9547261854 -19 18 38.884782645   9.361 8.750 8.45 8.33 G5 26 0
40 SAO 178705 PM* 10 20 32.5477661023 -23 38 39.568149451   10.259 9.593 9.90   ~ 6 0
41 HD 89694 PM* 10 20 33.2809866587 -23 38 25.678270352   8.67 7.54     K1III 13 0
42 HD 90175 PM* 10 23 24.4411996913 -50 20 54.518150592   8.418 7.928 8.72   F6V 25 0
43 HD 98427 ** 11 19 22.63950 -01 39 17.5965           G2V+G/K 27 0
44 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 699 0
45 HD 103742 PM* 11 56 42.3103758430 -32 16 05.363636391   8.28 7.64     G3V 50 1
46 HD 103743 PM* 11 56 43.7784001294 -32 16 02.692044633   8.48 7.81     G4V 50 1
47 HD 105113 ** 12 06 05.19503 -32 57 40.4295           G0V 47 0
48 HD 109749 PM* 12 37 16.3786075146 -40 48 43.624370244   8.864 8.208 8.96   G3V 77 1
49 V* GZ Vir dS* 13 13 13.7528625756 -02 33 20.620301146   8.19 7.68     F6V 31 0
50 HD 115863 ** 13 21 23.20903 -64 02 59.0843           G0V 26 0
51 HD 120237A PM* 13 48 55.0651887246 -35 42 15.046402646   7.11 6.56 6.44   F9V 82 0

    Equat.    Gal    SGal    Ecl

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2020.11.29-01:27:55

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