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 - 2023
#notes
1 NAME THA As* 00 00 -62.0           ~ 438 0
2 HD 987 Er* 00 13 53.0108292528 -74 41 17.850099516   9.48 8.724   7.933 G8V 100 0
3 HD 1466 Er* 00 18 26.1235857360 -63 28 38.980983432   8.00 7.46     F8V 109 0
4 CD-78 24 Er* 00 42 20.3144575248 -77 47 39.737671044   11.41 10.189   8.994 K3Ve 30 0
5 Smethells 173 Er* 00 45 28.1543761104 -51 37 33.939128316   13.17 12.30 10.9 9.73 M3V 54 0
6 HD 6569 PM* 01 06 26.1533050824 -14 17 47.105517192   10.35 9.52   8.55 K1V 60 0
7 V* DN Hyi BY* 01 23 17.3115908904 -79 41 32.615155392   11.31 10.183   8.770 K 10 0
8 HD 8558 Er* 01 23 21.2547930336 -57 28 50.688846336   9.21 8.543   7.773 G7V 82 0
9 V* CC Phe Er* 01 28 08.6607223056 -52 38 19.144933512   9.98 9.07     K1V 82 1
10 HD 10472 PM* 01 40 24.0655876848 -60 59 56.626037484   8.01 7.61   7.13 F2IV/V 59 0
11 CD-52 381 Er* 01 52 14.6257090872 -52 19 33.184648704   11.836 10.953 10.42 9.825 K2V(e) 60 0
12 CD-52 381B BD* 01 52 14.63 -52 19 30.0           M9.5 23 0
13 CD-53 386 ** 02 01 53.714832 -52 34 53.19120   11.97 11.02 10.69 9.932 K2Ve 17 0
14 2MASS J02045317-5346162 Er* 02 04 53.1666129816 -53 46 16.353499044   16.688 15.141     K5 18 0
15 HD 13246 PM* 02 07 26.1250439520 -59 40 45.941799000   8.02 7.50     F7V 82 1
16 RX J0222.7-6022 Er* 02 22 44.1541907952 -60 22 47.628540948   14.902 13.365 13.038   M3.5Ve 33 0
17 EXO 0235.2-5216 Er* 02 36 51.7013280528 -52 03 03.600913140   13.59 12.411   9.727 M2Ve 64 0
18 1RXS J025804.6-624115 Er* 02 58 04.0079248080 -62 41 13.551474552   12.35 11.66 11.15 10.403 K3Ve 21 0
19 HD 25284 PM* 04 00 03.8188820448 -29 02 16.431877752   11.44 10.38     K6V 19 0
20 V* DH Tau Or* 04 29 41.5525353432 +26 32 58.126559604 15.14 14.62 13.10 13.01   M1Ve 289 0
21 HD 29615 PM* 04 38 43.9420468776 -27 02 01.804814772   9.08 8.47   7.79 G3V 61 0
22 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4093 0
23 HD 35650 Ro* 05 24 30.1695408744 -38 58 10.747077852 11.54 10.365 9.054 8.293 7.577 K6V 85 0
24 V* AB Dor TT* 05 28 44.8712165880 -65 26 55.199147208 8.259 7.856 6.999 6.496 5.993 K0V 994 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 57 Y*O 05 35 16.07 -05 23 27.8           ~ 45 0
28 TCC 54 Rad 05 35 16.0707874104 -05 23 24.363423024           ~ 60 0
29 TCC 58 * 05 35 16.09280 -05 23 23.0106           ~ 30 1
30 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1367 1
31 CD-48 1893 * 05 36 55.0965482328 -47 57 47.936758860 12.05 11.07 9.865 9.098 8.381 K6Ve 58 0
32 V* UY Pic RS* 05 36 56.8528399368 -47 57 52.883969472   8.77 7.676   6.699 K0V 131 0
33 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1813 1
34 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 449 1
35 HD 42270 Er* 05 53 29.3165563872 -81 56 53.185059492   9.85 9.154   8.185 K0V 40 0
36 HD 41071 EB* 06 00 41.2986127464 -44 53 50.109263016   9.81 9.07     G8V 41 0
37 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 264 0
38 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 488 0
39 HD 44627 Er* 06 19 12.9130449912 -58 03 15.527294208   10.01 9.205   8.185 K1V(e) 164 1
40 HD 44627B BD* 06 19 12.9988086984 -58 03 20.198341332           L1 122 1
41 HD 45270 PM* 06 22 30.9408581256 -60 13 07.147057296 7.186 7.11 6.508   5.87 G1V 115 0
42 EUVE J0625-60.0 Er* 06 25 56.0925347184 -60 03 27.042176160   13.87 12.319 11.99 9.562 M5Ve 38 0
43 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 442 0
44 CD-61 1439 Er* 06 39 50.0234724000 -61 28 41.530139940 12.224 11.043 9.746 9.11 8.223 K7V(e) 74 0
45 1RXS J064345.6-642436 LM* 06 43 45.3431257440 -64 24 38.752194960   14.751 13.271 12.932   M3 14 0
46 RX J0817.7-8243 ** 08 17 39.4747620634 -82 43 30.089395758   13.105 11.845 11.279 8.928 M3.5 27 0
47 * 30 Mon PM* 08 25 39.6320108 -03 54 23.117820 3.85 3.88 3.90 3.87 3.92 A0Va 270 0
48 ECHA J0838.9-7916 LM* 08 38 51.4849263144 -79 16 13.752884532   16.82 16.4     M5 32 0
49 * eta Cha * 08 41 19.5125857944 -78 57 48.105898056 5.02 5.351 5.453     B8V 224 0
50 NAME eta Cha Association OpC 08 42 33 -78 57.8           ~ 351 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 02.3902433016 -30 51 36.587693556   15.03 13.41 13.089   M4 16 0
53 TWA 22 LXB 10 17 26.8927745040 -53 54 26.387425044   15.69 13.96 13.72   M5 77 0
54 HD 90905 PM* 10 29 42.2298999216 +01 29 28.037560668       6.5   G1V 85 0
55 NAME TW Hya Association As* 11 01.9 -34 42           ~ 907 0
56 TWA 28 LM* 11 02 09.8378779824 -34 30 35.562199176     21.46 19.14 17.90 M8.3 65 0
57 V* CT Cha Or* 11 04 09.0989256840 -76 27 19.329779664   13.44 13.00   10.89 K7Ve 125 0
58 CHXR 73 Y*O 11 06 28.7641341696 -77 37 33.140151012         15.78 M3e 48 1
59 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 207 0
60 TWA 3A TT* 11 10 27.9121410480 -37 31 51.535547940   14.04 12.57   9.10 M4Ve 202 0
61 V* V1215 Cen TT* 11 13 26.2208680752 -45 23 42.720964188     12.478   10.483 K8IVe 77 0
62 LP 733-99 LM* 11 20 06.1045187904 -10 29 46.727203956   12.734 11.250 10.887   M2.0V 44 0
63 V* V1217 Cen BY* 11 21 05.4814169256 -38 45 16.522915140   14.04 12.58 12.34 10.515 M1Ve 75 0
64 CD-33 7795B LM* 11 31 55.2500 -34 36 25.200     20.40   15.8 M8.5/9e 120 0
65 CD-33 7795 TT* 11 31 55.2608963280 -34 36 27.203892120   12.97 11.524 11.150 9.150 M2Ve 187 0
66 TWA 26 LM* 11 39 51.1378374696 -31 59 21.443660124         15.83 M8e 103 0
67 HD 102458 Y*O 11 47 24.5438206248 -49 53 03.018484572   9.70 9.07   8.40 G4V 88 0
68 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 760 0
69 V* T Cha Or* 11 57 13.5245085552 -79 21 31.530508884   10.00 11.86     K0e 260 1
70 TWA 23 TT* 12 07 27.3763935312 -32 47 00.242923776   14.157 12.7     M2.5Ve 65 0
71 TWA 27 LM* 12 07 33.4675524840 -39 32 54.016625184     19.95 17.99 15.88 M8IVe 330 0
72 NLTT 29803 PM* 12 10 06.4712050176 -49 10 50.657624976   8.86 8.199   7.414 G5V 58 0
73 V* V1249 Cen TT* 12 15 30.7203201048 -39 48 42.606684144   13.09 11.160 10.919 9.50 M0.5 102 0
74 CD-49 7027 Y*O 12 21 55.6590902616 -49 46 12.443074608   10.81 10.001   9.050 G9V 29 0
75 HD 109536 PM* 12 35 45.5318060064 -41 01 19.008243912   5.342 5.114     A7V 71 0
76 HD 109573 PM* 12 36 01.0317461592 -39 52 10.220465388   5.786 5.774 7.25 5.81 A0V 602 1
77 CPD-63 2367 Y*O 12 36 38.9779337112 -63 44 43.520073000   10.83 10.028   8.951 K2V 14 0
78 V* V1267 Cen TT* 13 20 45.3877266600 -46 11 37.711450572   14.0 12.7   10.78 K5IVe 42 0
79 1RXS J134442.5-634758 Y*O 13 44 42.7967106480 -63 47 49.449431184   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 66 0
81 HD 124484 * 14 15 17.5891176840 -48 43 50.874077676   9.68 9.41     A5/6IV 11 0
82 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 710 0
83 TYC 7818-504-1 Em* 14 30 13.5255882528 -43 50 09.923955108   11.53 10.46     K5 4 0
84 V* NY Aps BY* 15 12 23.4366789528 -75 15 15.643023768   10.23 9.378   8.512 G9V 46 0
85 CD-51 9202 PM* 15 32 36.7041802224 -52 21 20.769371568   12.49 11.16 10.48   M0 10 0
86 HD 139084B PM* 15 38 56.7796135536 -57 42 18.954140724     14.80 14.88 11.73 M5Ve 25 1
87 HD 139751 ** 15 40 28.3909232278 -18 41 46.266683627     10.070 9.953 8.637 K5V 43 0
88 V* GQ Lup Or* 15 49 12.1053805848 -35 39 05.058139788 12.19 12.76 11.66 11.15   K7Ve 268 1
89 V* NZ Lup BY* 15 53 27.2916958608 -42 16 00.710765508   8.48 7.975   7.213 G2 93 0
90 NAME Lupus Complex SFR 16 03 -38.1           ~ 642 0
91 RX J1609.5-2105 Y*O 16 09 30.3075290712 -21 04 58.943800992   14.21 12.77 12.25 10.99 M0.0e 86 0
92 NAME Upper Sco Association As* 16 12 -23.4           ~ 1252 1
93 HD 147633 ** 16 25 17.58322 -49 08 52.3567   9.44 8.92 8.27   G2V 60 0
94 HD 155555 RS* 17 17 25.5053342232 -66 57 03.732141636 7.795 7.499 6.723   6.39 K1Vp 264 2
95 HD 155915 PM* 17 18 14.6477805192 -60 27 27.481458780   10.29 9.355   8.515 G8V 36 0
96 HD 159911 SB* 17 37 46.4747505936 -13 14 46.596572772   11.17 10.023   8.590 K7e 21 0
97 HD 161460 Y*O 17 48 33.7487706842 -53 06 43.372347052   10.44 8.945   7.954 K0IV 30 0
98 HD 164249 PM* 18 03 03.4097283792 -51 38 56.432149872   7.438 7.007 7.90   F6V 112 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 262 0
101 CD-64 1208 SB* 18 45 37.0492713148 -64 51 45.888646069   10.518 9.433 9.694   K5Ve 62 0
102 CD-31 16041 Y*O 18 50 44.4830287248 -31 47 47.382005112   12.25 11.191 10.745 9.432 K8Ve 44 0
103 V* PZ Tel BY* 18 53 05.8735056984 -50 10 49.897437168   9.22 8.342   7.464 G9IV 316 0
104 HD 230030 * 18 54 56.2841824584 +14 16 07.468708908   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 51.2060774616 -54 25 26.145617376   5.035 5.020   4.99 A0V 207 0
107 * eta Tel B LM* 19 22 51.3580284238 -54 25 31.569876496           M7.5V 70 0
108 HD 181327 PM* 19 22 58.9437222504 -54 32 16.975668624   7.50 7.04   6.49 F6V 268 0
109 HD 183414 PM* 19 35 09.7191677592 -69 58 32.096120988   8.538 7.891     G3V 54 0
110 RX J1942.2-2045 PM* 19 42 12.8207494824 -20 45 47.976371352   15.84 14.27 13.87 11.25 M5.1V 21 0
111 * eps Pav PM* 20 00 35.5555788 -72 54 37.819779   3.927 3.940     A0Va 123 0
112 * alf Pav SB* 20 25 38.85705 -56 44 06.3230 1.03 1.791 1.918     B2IV 284 0
113 V* BO Mic BY* 20 47 45.0056152368 -36 35 40.769832192   10.39 9.337   8.216 K3V(e) 188 0
114 V* BS Ind EB* 21 20 59.8038697752 -52 28 40.207860948   10.70 8.900   7.893 G9V 69 0
115 CD-72 1700 ** 21 49 05.7588628054 -72 06 09.125972545 12.21 11.069 9.641 8.682 7.641 M1Ve 60 0
116 [FS2003] 1136 * 21 49 06.20 -64 12 55.9           K 5 0
117 HD 207575 PM* 21 52 09.7248858144 -62 03 08.506270296   7.72 7.23     F6V 74 0
118 HD 207964 ** 21 55 11.39417 -61 53 11.7947   6.37 5.96     F0(V)+F5(V) 85 1
119 RX J2244.1-5413 ** 22 44 08.7681839760 -54 13 18.503574168   14.755 13.463 13.308 10.702 M4 21 0
120 * 51 Peg b Pl 22 57 27.9804167474 +20 46 07.782240714           ~ 618 1
121 * alf PsA b Pl 22 57 39.04625 -29 37 20.0533           ~ 194 1
122 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1195 3
123 HD 217343 PM* 23 00 19.2868499184 -26 09 13.504347252   8.12 7.48   6.75 G5V 108 0
124 HD 218396d Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 221 1
125 HD 218396b Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 253 1
126 HD 218396c Pl 23 07 28.7156905667 +21 08 03.302133882           ~ 239 1
127 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1057 0
128 HD 224228 PM* 23 56 10.6732330776 -39 03 08.409504852 9.977 9.21 8.225 7.669 7.194 K2V 83 0
129 NAME Carina Moving Group MGr ~ ~           ~ 42 0

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2023.01.27-22:32:32

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