2010A&A...509A..52C


Query : 2010A&A...509A..52C

2010A&A...509A..52C - Astronomy and Astrophysics, volume 509, A52-52 (2010/1-1)

Deep imaging survey of young, nearby austral stars. VLT/NACO near-infrared Lyot-coronographic observations.

CHAUVIN G., LAGRANGE A.-M., BONAVITA M., ZUCKERMAN B., DUMAS C., BESSELL M.S., BEUZIT J.-L., BONNEFOY M., DESIDERA S., FARIHI J., LOWRANCE P., MOUILLET D. and SONG I.

Abstract (from CDS):

High contrast and high angular resolution imaging is the optimal search technique for substellar companions to nearby stars at physical separations larger than typically 10AU. Two distinct populations of substellar companions, brown dwarfs and planets, can be probed and characterized. As a result, fossile traces of processes of formation and evolution can be revealed by physical and orbital properties, both for individual systems and as an ensemble. Since November 2002, we have conducted a large, deep imaging, survey of young, nearby associations of the southern hemisphere. Our goal is detection and characterization of substellar companions with projected separations in the range 10-500AU. We have observed a sample of 88 stars, primarily G to M dwarfs, younger than 100Myr, and within 100pc of Earth. The VLT/NACO adaptive optics instrument of the ESO Paranal Observatory was used to explore the faint circumstellar environment between typically 0.1 and 10''. Diffraction-limited observations in H and Ks-band combined with Lyot-coronagraphy enabled us to reach primary star-companion brightness ratios as small as 10–6. The existence of planetary mass companions could therefore be probed. We used a standardized observing sequence to precisely measure the position and flux of all detected sources relative to their visual primary star. Repeated observations at several epochs enabled us to discriminate comoving companions from background objects. We report the discovery of 17 new close (0.1-5.0'') multiple systems. HIP 108195AB and C (F1III-M6), HIP 84642AB (a∼14AU, K0-M5) and TWA 22AB (a∼1.8AU; M6-M6) are confirmed comoving systems. TWA 22AB is likely to be a rare astrometric calibrator that can be used to test evolutionary model predictions. Among our complete sample, a total of 65 targets were observed with deep coronagraphic imaging. About 240 faint companion candidates were detected around 36 stars. Follow-up observations with VLT or HST for 83% of these stars enabled us to identify a large fraction of background contaminants. Our latest results that pertain to the substellar companions to GSC 08047-00232, AB Pic and 2M 1207 (confirmed during this survey and published earlier), are reviewed. Finally, a statistical analysis of our complete set of coronagraphic detection limits enables us to place constraints on the physical and orbital properties of giant planets between typically 20 and 150AU.

Abstract Copyright:

Journal keyword(s): instrumentation: adaptive optics - instrumentation: high angular resolution - methods: observational - methods: statistical - brown dwarfs - planetary systems

VizieR on-line data: <Available at CDS (J/A+A/509/A52): table23.dat table8.dat>

Simbad objects: 129

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Number of rows : 129
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME THA As* 00 00 -62.0           ~ 393 0
2 HD 987 PM* 00 13 53.0105874824 -74 41 17.851248731   9.48 8.724   7.933 G8V 89 0
3 HD 1466 PM* 00 18 26.1235227218 -63 28 38.981281995   8.00 7.46     F8V 99 0
4 CD-78 24 PM* 00 42 20.3154071493 -77 47 39.737696603   11.41 10.189   8.994 K3Ve 23 0
5 Smethells 173 PM* 00 45 28.1544088094 -51 37 33.937764783   13.17 12.30 10.9 9.73 M3V 51 0
6 HD 6569 PM* 01 06 26.1533019474 -14 17 47.106147991   10.35 9.52   8.55 K1V 51 0
7 ASAS J012326-7941.6 BY* 01 23 17.2657893249 -79 41 32.625621576   11.31 10.183   8.770 K 9 0
8 HD 8558 PM* 01 23 21.2548999023 -57 28 50.689650839   9.21 8.543   7.773 G7V 72 0
9 V* CC Phe PM* 01 28 08.6609551392 -52 38 19.147504694   9.98 9.07     K1V 74 1
10 HD 10472 PM* 01 40 24.0660166953 -60 59 56.623736611   8.01 7.61   7.13 F2IV/V 56 0
11 CD-52 381 PM* 01 52 14.6258722411 -52 19 33.185337378   11.836 10.953 10.42 9.825 K2V(e) 54 0
12 CD-52 381B BD* 01 52 14.63 -52 19 30.0           M9.5 22 0
13 CD-53 386 Ro* 02 01 53.714832 -52 34 53.19120   11.97 11.02 10.69 9.932 K2Ve 15 0
14 [FS2003] 0075 PM* 02 04 53.1667812822 -53 46 16.350792421   16.688 15.141     K5 15 0
15 HD 13246 PM* 02 07 26.1252246821 -59 40 45.943903559   8.02 7.50     F7V 77 1
16 RX J0222.7-6022 PM* 02 22 44.1538185006 -60 22 47.630907230   14.902 13.365 13.038   M3.5Ve 30 0
17 EXO 0235.2-5216 Er* 02 36 51.7015289640 -52 03 03.601426664   13.59 12.411   9.727 M2Ve 55 0
18 TYC 8862-19-1 Ro* 02 58 04.0082181427 -62 41 13.553047827   12.35 11.66 11.15 10.403 K3Ve 18 0
19 HD 25284 PM* 04 00 03.8327441749 -29 02 16.443280144   11.44 10.38     K6V 19 0
20 V* DH Tau Or* 04 29 41.5520056304 +26 32 58.123761109 15.14 14.62 13.10 13.01   M1Ve 278 0
21 HD 29615 PM* 04 38 43.9422102420 -27 02 01.805131424   9.08 8.47   7.79 G3V 56 0
22 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3816 0
23 HD 35650 Ro* 05 24 30.1697133942 -38 58 10.746312369 11.54 10.365 9.054 8.293 7.577 K6V 78 0
24 V* AB Dor TT* 05 28 44.8916324761 -65 26 55.289846904 8.259 7.856 6.999 6.496 5.993 K0V 964 0
25 MLLA 394 * 05 35 15.29340 -05 23 23.1241           ~ 21 0
26 MLLA 367 * 05 35 15.55170 -05 23 29.5216           ~ 20 0
27 TCC 54 Rad 05 35 16.06922 -05 23 24.3483           ~ 59 0
28 TCC 57 Y*O 05 35 16.07 -05 23 27.8           ~ 44 0
29 TCC 58 * 05 35 16.09280 -05 23 23.0106           ~ 30 1
30 * tet01 Ori C SB* 05 35 16.4664092288 -05 23 22.897102710 4.20 5.15 5.13 4.91 4.73 O7Vp 1321 1
31 CD-48 1893 * 05 36 55.0960588351 -47 57 47.952513392 12.05 11.07 9.865 9.098 8.381 K6Ve 53 0
32 V* UY Pic RS* 05 36 56.8530716709 -47 57 52.884166166   8.77 7.676   6.699 K0V 121 0
33 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1755 1
34 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 413 1
35 HD 42270 PM* 05 53 29.3170612989 -81 56 53.185140942   9.85 9.154   8.185 K0V 35 0
36 HD 41071 EB* 06 00 41.2987087626 -44 53 50.106293989   9.81 9.07     G8V 36 0
37 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 238 0
38 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 473 0
39 HD 44627 Ro* 06 19 12.9129838711 -58 03 15.524890610   10.01 9.205   8.185 K1V(e) 152 1
40 HD 44627B BD* 06 19 12.94 -58 03 20.9           L1 118 1
41 HD 45270 PM* 06 22 30.9412022189 -60 13 07.143258224 7.186 7.11 6.508   5.87 G1V 109 0
42 EUVE J0625-60.0 PM* 06 25 56.0925770647 -60 03 27.038791608   13.87 12.319 11.99 9.562 M5Ve 33 0
43 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 409 0
44 CD-61 1439 PM* 06 39 50.0241378869 -61 28 41.529964006 12.224 11.043 9.746 9.11 8.223 K7V(e) 68 0
45 1RXS J064345.6-642436 LM* 06 43 45.332688 -64 24 39.51504   14.751 13.271 12.932   M3 13 0
46 ASAS J081742-8243.4 PM* 08 17 39.4747620634 -82 43 30.089395758   13.34 11.621   8.928 M3.5 26 0
47 * 30 Mon PM* 08 25 39.6320108 -03 54 23.117820 3.85 3.88 3.90 3.87 3.92 A0Va 266 0
48 ECHA J0838.9-7916 LM* 08 38 51.4828424899 -79 16 13.746697411   16.82 16.4     M5 30 0
49 * eta Cha * 08 41 19.5144242735 -78 57 48.102318990 5.02 5.351 5.453     B8V 217 0
50 NAME eta Cha Association OpC 08 42 33 -78 57.8           ~ 330 0
51 UCAC2 10355543 ** 08 47 22.626 -49 59 57.88   13.16 11.72 11.22   M1 5 0
52 L 532-12 LM* 08 54 02.3902367215 -30 51 36.587183597   15.03 13.41 13.089   M4 16 0
53 TWA 22 LXB 10 17 26.8983656044 -53 54 26.459439803   15.69 13.96 13.72   M5 75 0
54 HD 90905 PM* 10 29 42.2300405874 +01 29 28.039591756       6.5   G1V 78 0
55 NAME TW Hya Association As* 11 01.9 -34 42           ~ 868 0
56 TWA 28 LM* 11 02 09.8372483500 -34 30 35.573128437     21.46 19.14 17.90 M8.3 63 0
57 V* CT Cha Or* 11 04 09.0989057683 -76 27 19.326914289   13.44 13.00   10.89 K7Ve 116 0
58 CHXR 73 Y*O 11 06 28.7626436677 -77 37 33.144403799         15.78 M3e 44 1
59 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 205 0
60 TWA 3A TT* 11 10 27.9117558304 -37 31 51.529219753   14.04 12.57   9.10 M4Ve 194 0
61 V* V1215 Cen TT* 11 13 26.2208332352 -45 23 42.719174706     12.478   10.483 K8IVe 74 0
62 LP 733-99 LM* 11 20 06.1044739405 -10 29 46.725680797   12.734 11.250 10.887   M2.0V 39 0
63 V* V1217 Cen BY* 11 21 05.4812165874 -38 45 16.521880972   14.04 12.58 12.34 10.515 M1Ve 68 0
64 CD-33 7795B LM* 11 31 55.2500 -34 36 25.200     20.40   15.8 M8.5/9e 119 0
65 CD-33 7795 TT* 11 31 55.2603055856 -34 36 27.214242128   12.97 11.524 11.150 9.150 M2Ve 183 0
66 TWA 26 LM* 11 39 51.1435262748 -31 59 21.473337261         15.83 M8e 100 0
67 HD 102458 Pe* 11 47 24.5436617458 -49 53 03.018055867   9.70 9.07   8.40 G4V 84 0
68 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 725 0
69 V* T Cha Or* 11 57 13.5268556629 -79 21 31.521755129   10.00 11.86     K0e 249 1
70 TWA 23 TT* 12 07 27.3753633293 -32 47 00.253618251   14.157 12.7     M2.5Ve 62 0
71 TWA 27 LM* 12 07 33.4676156527 -39 32 54.016042897     19.95 17.99 15.88 M8IVe 317 0
72 NLTT 29803 PM* 12 10 06.4713164686 -49 10 50.656895587   8.86 8.199   7.414 G5V 51 0
73 V* V1249 Cen TT* 12 15 30.7203284919 -39 48 42.605543199   13.09 11.160 10.919 9.50 M0.5 95 0
74 CD-49 7027 Y*O 12 21 55.6591197161 -49 46 12.440182190   10.81 10.001   9.050 G9V 28 0
75 HD 109536 PM* 12 35 45.5323383923 -41 01 19.021555705   5.342 5.114     A7V 70 0
76 HD 109573 PM* 12 36 01.0317721349 -39 52 10.222698506   5.786 5.774 7.25 5.81 A0V 583 1
77 CPD-63 2367 Y*O 12 36 38.9760784319 -63 44 43.520197994   10.83 10.028   8.951 K2V 14 0
78 V* V1267 Cen TT* 13 20 45.3877589173 -46 11 37.712461035   14.0 12.7   10.78 K5IVe 41 0
79 2MASS J13444279-6347495 Y*O 13 44 42.7965520608 -63 47 49.445158659   12.00 10.969   9.511 K4Ve 16 0
80 HD 124498 Ro* 14 14 21.35665 -15 21 21.7551   11.74 10.222 10.072 8.493 K5.5Vkee 64 0
81 HD 124484 Pe* 14 15 17.5887813856 -48 43 50.874864932   9.68 9.41     A5/6IV 10 0
82 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 635 0
83 TYC 7818-504-1 Em* 14 30 13.5257042170 -43 50 09.924134525   11.53 10.46     K5 4 0
84 V* NY Aps BY* 15 12 23.4362962400 -75 15 15.642843358   10.23 9.378   8.512 G9V 40 0
85 CD-51 9202 PM* 15 32 36.7039914366 -52 21 20.769086997   12.49 11.16 10.48   M0 10 0
86 HD 139084B PM* 15 38 56.7796538592 -57 42 18.956312475     14.80 14.88 11.73 M5Ve 24 1
87 HD 139751 ** 15 40 28.3909232278 -18 41 46.266683627     10.070 9.953 8.637 K5V 41 0
88 CD-35 10525 Or* 15 49 12.1055573607 -35 39 05.053991067 12.19 12.76 11.66 11.15   K7Ve 262 0
89 V* NZ Lup BY* 15 53 27.2914974411 -42 16 00.711812290   8.48 7.975   7.213 G2 86 0
90 NAME Lup Cloud SFR 16 03 -38.1           ~ 583 0
91 RX J1609.5-2105 Y*O 16 09 30.3076191853 -21 04 58.945280778   14.21 12.77 12.25 10.99 M0.0e 79 0
92 NAME Upper Sco Association As* 16 12 -23.4           ~ 1142 1
93 HD 147633 ** 16 25 17.58322 -49 08 52.3567   9.44 8.92 8.27   G2V 59 0
94 HD 155555 RS* 17 17 25.5047544575 -66 57 03.732827572 7.795 7.499 6.723   6.39 K1Vp 258 2
95 HD 155915 PM* 17 18 14.6469502776 -60 27 27.488883804   10.29 9.355   8.515 G8V 34 0
96 HD 159911 PM* 17 37 46.4748424299 -13 14 46.598070273   11.17 10.023   8.590 K7e 19 0
97 HD 161460 Y*O 17 48 33.7487706842 -53 06 43.372347052   10.44 8.945   7.954 K0IV 27 0
98 HD 164249 PM* 18 03 03.4097129717 -51 38 56.434160321   7.438 7.007 7.90   F6V 104 0
99 1RXS J183520.9-312327 X 18 35 20.9 -31 23 27           ~ 3 0
100 HD 172555 PM* 18 45 26.9009806435 -64 52 16.534807985   4.967 4.767     A7V 252 0
101 CD-64 1208 ** 18 45 37.0492713148 -64 51 45.888646069   10.518 9.433 9.694   K5Ve 60 0
102 CD-31 16041 Y*O 18 50 44.4829107282 -31 47 47.382754551   12.25 11.191 10.745 9.432 K8Ve 41 0
103 V* PZ Tel BY* 18 53 05.8733807460 -50 10 49.901380086   9.22 8.342   7.464 G9IV 303 0
104 HD 230030 * 18 54 56.2839842199 +14 16 07.467090151   12.06 11.51 11.34   ~ 3 0
105 1RXS J191919.6-013422 * 19 19 20.11 -01 34 17.2           M5 3 0
106 * eta Tel PM* 19 22 51.2064652963 -54 25 26.152538950   5.035 5.020   4.99 A0V+M7/8V 200 0
107 * eta Tel B LM* 19 22 51.26 -54 25 30.7           M7.5V 68 0
108 HD 181327 PM* 19 22 58.9434412361 -54 32 16.979671096   7.50 7.04   6.49 F6V 250 0
109 HD 183414 PM* 19 35 09.7191296886 -69 58 32.098743191   8.538 7.891     G3V 47 0
110 RX J1942.2-2045 PM* 19 42 12.8207085661 -20 45 47.974588657   15.84 14.27 13.87 11.25 M5.1V 17 0
111 * eps Pav PM* 20 00 35.5555788 -72 54 37.819779   3.927 3.940     A0Va 118 0
112 * alf Pav SB* 20 25 38.85705 -56 44 06.3230 1.03 1.791 1.918     B2IV 279 0
113 V* BO Mic BY* 20 47 44.9892114361 -36 35 40.819135413   10.39 9.337   8.216 K3V(e) 177 0
114 V* BS Ind EB* 21 20 59.8211404023 -52 28 40.186986149   10.70 8.900   7.893 G9V 68 0
115 CD-72 1700 Er* 21 49 05.7565145368 -72 06 09.093515758 12.21 11.069 9.641 8.682 7.641 M1Ve 57 0
116 [FS2003] 1136 * 21 49 06.20 -64 12 55.9           K 5 0
117 HD 207575 PM* 21 52 09.7248951966 -62 03 08.508117999   7.72 7.23     F6V 69 0
118 HD 207964 ** 21 55 11.39417 -61 53 11.7947   6.37 5.96     F0(V)+F5(V) 84 1
119 RX J2244.1-5413 ** 22 44 08.739120 -54 13 18.29208   14.755 13.463 13.308 10.702 M4 20 0
120 * 51 Peg b Pl 22 57 27.9804167474 +20 46 07.782240714           ~ 578 1
121 * alf PsA b Pl 22 57 39.04625 -29 37 20.0533           ~ 193 1
122 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1164 3
123 HD 217343 PM* 23 00 19.2872945687 -26 09 13.506860661   8.12 7.48   6.75 G5V 100 0
124 HD 218396d Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 205 1
125 HD 218396b Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 236 1
126 HD 218396c Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 223 1
127 HD 218396 El* 23 07 28.7156905667 +21 08 03.302133882   6.21 5.953     F0+VkA5mA5 991 0
128 HD 224228 PM* 23 56 10.6732720614 -39 03 08.409993692 9.977 9.21 8.225 7.669 7.194 K2V 76 0
129 NAME Carina Moving Group MGr ~ ~           ~ 38 0

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2021.12.06-10:38:39

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