2019MNRAS.485.4423S


C.D.S. - SIMBAD4 rel 1.7 - 2020.03.29CEST12:08:55

2019MNRAS.485.4423S - Mon. Not. R. Astron. Soc., 485, 4423-4440 (2019/May-3)

The Gaia ultracool dwarf sample - II. Structure at the end of the main sequence.

SMART R.L., MAROCCO F., SARRO L.M., BARRADO D., BEAMIN J.C., CABALLERO J.A. and JONES H.R.A.

Abstract (from CDS):

We identify and investigate known late M, L, and T dwarfs in the Gaia second data release. This sample is being used as a training set in the Gaia data processing chain of the ultracool dwarfs work package. We find 695 objects in the optical spectral range M8-T6 with accurate Gaia coordinates, proper motions, and parallaxes which we combine with published spectral types and photometry from large area optical and infrared sky surveys. We find that 100 objects are in 47 multiple systems, of which 27 systems are published and 20 are new. These will be useful benchmark systems and we discuss the requirements to produce a complete catalogue of multiple systems with an ultracool dwarf component. We examine the magnitudes in the Gaia passbands and find that the GBP magnitudes are unreliable and should not be used for these objects. We examine progressively redder colour-magnitude diagrams and see a notable increase in the main-sequence scatter and a bivariate main sequence for old and young objects. We provide an absolute magnitude - spectral subtype calibration for G and GRP passbands along with linear fits over the range M8-L8 for other passbands.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: visual - brown dwarfs - Hertzsprung-Russell and colour-magnitude diagrams - stars: late-type - solar neighbourhood

Status at CDS:   waiting for electronic table
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Simbad objects: 96

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Number of rows : 96

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 NAME THA As* 00 00 -62.0           ~ 327 0
2 L 362-29 B BD* 00 04 34.8641153471 -40 44 06.464450691       19.61 16.88 L5+L5 94 0
3 L 362-29 PM* 00 04 36.4374506293 -40 44 02.887752646   14.47 12.84 12.525   M4V 67 0
4 2MASS J00065794-6436542 BD* 00 06 57.9294129220 -64 36 54.235696291         16.712 M9.5 11 0
5 SSSPM J0134-6315 PM* 01 33 32.4745985275 -63 14 41.595550141           M7 5 0
6 2MASS J01415823-4633574 BD* 01 41 58.2345784233 -46 33 57.347491326           L0gamma 62 0
7 2MASS J01443191-4604318 PM* 01 44 31.9014315431 -46 04 31.819751731   19.3       M5.5e 7 0
8 UCAC4 159-002053 PM* 02 20 51.3906776405 -58 23 41.113647327   15.47 13.93 13.56   M3.5Ve 13 0
9 2MASS J02235464-5815067 BD* 02 23 54.6559351610 -58 15 06.617516787           L0gamma 12 0
10 DENIS J022519.4-583729 LM* 02 25 19.4775675172 -58 37 29.590482800         17.01 M9 7 0
11 2MASS J02355993-2331205 BD* 02 35 59.9393683632 -23 31 20.398833102           L1.5 35 0
12 HD 16270 PM* 02 36 00.7756881675 -23 31 16.766374061 10.375 9.406 8.328 7.717 7.208 K3.5Vk: 54 1
13 2MASS J03202839-0446358 LM* 03 20 28.3595736792 -04 46 36.418652525           M8.5+T5 37 0
14 2MASS J03552337+1133437 BD* 03 55 23.3772215371 +11 33 43.796763263           L5gamma 84 0
15 2MASS J04390101-2353083 BD* 04 39 01.0052846057 -23 53 08.491292431           L4.5 33 0
16 2MASS J04455387-3048204 BD* 04 45 53.8963304655 -30 48 20.638907091           L2 22 0
17 2MASSI J0518461-275645 BD* 05 18 46.1670674958 -27 56 45.711747788           L1.0V 23 0
18 2MASS J05431887+6422528 BD* 05 43 18.9188724192 +64 22 52.552315771           L2 10 0
19 HD 42581 Fl* 06 10 34.6152510171 -21 51 52.658021185 10.801 9.607 8.125 7.164 6.121 M1V 392 0
20 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 453 0
21 2MASS J06154934-0100415 BD* 06 15 49.3549619421 -01 00 41.659094164         17.00 L1.0V 11 0
22 2MASS J08053189+4812330 BD* 08 05 31.8466615235 +48 12 32.901300983           L4+T5 30 0
23 NGC 2632 OpC 08 40 24 +19 40.0           ~ 1202 0
24 2MASS J08430796+3141297 BD* 08 43 07.9483584732 +31 41 29.528458065           L2.5V 4 0
25 LP 312-49 PM* 08 58 36.7277595224 +27 11 06.708160063   17.8   15.2   M4 8 0
26 2MASS J08583693+2710518 BD* 08 58 36.9426229606 +27 10 51.766505249           L0.0V 9 0
27 2MASS J09073765+4509359 BD* 09 07 37.6665336465 +45 09 35.723470279           M9V 3 0
28 TYC 3424-215-1 PM* 09 08 05.6407470611 +45 10 32.009608482   10.50 9.47     ~ 4 0
29 2MASS J09153413+0422045 BD* 09 15 34.137 +04 22 04.59           L6 29 0
30 2MASS J09175035+2944455 BD* 09 17 50.3511499619 +29 44 45.275660112           L0 5 0
31 G 196-3B BD* 10 04 20.6389184345 +50 22 59.448807780           L3beta 91 0
32 G 196-3 Ro* 10 04 21.4628959388 +50 23 13.387216700       11.323   M3.0V 69 0
33 LP 903-20 PM* 10 04 38.7261959266 -33 35 09.530987907       14.14 11.46 M4 16 0
34 2MASSW J1004392-333518 BD* 10 04 39.3210622158 -33 35 19.112763324           L5 13 0
35 2MASS J10170754+1308398 BD* 10 17 07.5511495626 +13 08 39.830791045         17.418 L1.5+L3 27 0
36 LP 213-67 PM* 10 47 12.6093653326 +40 26 43.728916506   19.2       M6.5Ve 32 1
37 LP 213-68 ** 10 47 13.7773543561 +40 26 49.271483418   21.2   19.1   M8+L0 29 0
38 NAME Luhman 16A BD* 10 49 19.0 -53 19 10           L7.5 25 0
39 UCAC4 452-049871 PM* 11 19 28.6639208081 +00 21 41.493946208   17.61 16.02 15.66   ~ 2 0
40 2MASS J11414410+4116568 BD* 11 41 44.1354195462 +41 16 56.919894681           L0 3 0
41 HD 101620 PM* 11 41 46.3412337031 +41 14 15.288541624   7.337 6.909     F5 31 0
42 2MASS J11553952-3727350 BD* 11 55 39.5360387792 -37 27 35.506067298           L2.3V 34 0
43 LP 216-41 PM* 12 02 49.6019631625 +42 04 47.391150730   19.9   17.9   M6 6 0
44 2MASS J12025009+4204531 BD* 12 02 50.0600058093 +42 04 53.046261591           L0 5 0
45 TWA 27 LM* 12 07 33.4676156527 -39 32 54.016042897     19.95 17.99 15.88 M8Ve 308 0
46 TWA 27B BD* 12 07 33.50 -39 32 54.4           L3 231 0
47 ULAS J121932.50+015432.2 BD? 12 19 32.50 +01 54 32.2           ~ 2 0
48 [SLS2012] PYC J12195+0154 PM* 12 19 33.1534443163 +01 54 26.796624628     14.8     ~ 3 0
49 2MASS J12451496+1204423 BD* 12 45 14.9601975783 +12 04 42.210300233           L1 4 0
50 SDSS J124520.60+120531.3 WD* 12 45 20.6076751733 +12 05 31.495208632           DA 3 0
51 ULAS J124531.54+015630.9 BD? 12 45 31.54 +01 56 30.9           ~ 2 0
52 2MASS J12545393-0122474 BD* 12 54 53.9040607346 -01 22 47.399401142           T2e: 132 0
53 SDSS J130432.93+090713.7 PM* 13 04 32.9553324183 +09 07 13.785173507           ~ 2 0
54 2MASS J13043318+0907070 BD* 13 04 33.1889583428 +09 07 06.925160039           L0 4 0
55 2MASS J13492525+5049544 BD* 13 49 25.2393477063 +50 49 54.293406354           L0 3 0
56 2MASS J13595510-4034582 BD* 13 59 55.1138685185 -40 34 58.515416266         16.985 L3.1:V 18 0
57 ULAS J141623.94+134836.3 BD* 14 16 23.94 +13 48 36.3           T7.5p 34 1
58 2MASS J14162408+1348263 BD* 14 16 24.0749913653 +13 48 26.176168678           L7+T7.5 55 0
59 V* V645 Cen Fl* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 925 0
60 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 539 0
61 G 239-25 PM* 14 42 21.5759208896 +66 03 20.845074365   12.43 10.708 10.383   M3V 61 0
62 G 239-25B BD* 14 42 22.0520193353 +66 03 19.680524608     16.0     L0 7 0
63 2MASS J14540797-6604476 BD* 14 54 07.9754454431 -66 04 47.444002883         16.90 L5 11 0
64 WISE J150649.97+702736.1 BD* 15 06 52.4402578463 +70 27 25.118224880           T6 11 0
65 WDS J15200-4423A BD* 15 20 02.1875791473 -44 22 42.551949517           L1.5 4 0
66 2MASS J15200224-4422419 BD* 15 20 02.242 -44 22 41.99       19.4 16.89 L1 21 0
67 WDS J15200-4423B BD* 15 20 02.2441297020 -44 22 41.456675997           L4.5 4 0
68 ULAS J154005.10+010208.7 BD? 15 40 05.10 +01 02 08.7           ~ 2 0
69 2MASSI J1550084+145517 BD* 15 50 08.453 +14 55 18.08           L2.5 11 0
70 LSR J1610-0040 LM* 16 10 28.9562440851 -00 40 53.300190959       17.51 14.81 sdM7 46 0
71 NAME Upper Sco Association As* 16 12 -23.4           ~ 985 1
72 HD 149361 PM* 16 32 52.5211683201 +35 04 31.326876511   9.00 8.24     K0 7 0
73 2MASS J16325610+3505076 BD* 16 32 56.1158751641 +35 05 07.458572507           L0.7V 3 0
74 2MASS J17114559+4028578 BD* 17 11 45.6231640985 +40 28 57.853971297           L5 7 1
75 G 203-50 PM* 17 11 46.0843999429 +40 29 01.526228338   17.4   15.3   M4.5Ve 16 0
76 NLTT 44368 PM* 17 11 49.3012191106 +54 31 36.978656228   14.41   13.0   ~ 4 0
77 2MASS J17115739+5430405 BD* 17 11 57.3577418903 +54 30 40.620969768           L1.5 2 0
78 2MASS J17171408+6526221 BD* 17 17 14.0569813083 +65 26 22.244715041           L6.2V 12 0
79 LSPM J1731+2721 BD* 17 31 29.7424764159 +27 21 23.234590972   20.1   17.6 14.9 L0 35 0
80 2MASS J18071593+5015316 BD* 18 07 15.9376984448 +50 15 31.634072578           L1 34 0
81 [KPR2004b] 474 OpC 20 04 48 -10 31.5           ~ 20 0
82 2MASS J21121598-8128452 LM* 21 12 15.9832511203 -81 28 45.200410256           M5.5 4 0
83 2MASS J21192028-8145446 PM* 21 19 20.2549143934 -81 45 44.575158892           ~ 2 0
84 TYC 9486-927-1 PM* 21 25 27.4863621030 -81 38 27.692110693   13.31 11.821 11.517 9.64 M1Ve 24 0
85 2MASS J21265040-8140293 BD* 21 26 50.3777815674 -81 40 29.160745737         18.38 L3gamma 11 0
86 2MASSW J2148162+400359 BD* 21 48 16.2971270771 +40 03 59.335322406           L7 45 0
87 2MASS J22000201-3038327 BD* 22 00 02.01888 -30 38 32.7120       19.2 16.7 L0 28 0
88 ** BUG 6B PM* 22 00 02.0331732130 -30 38 32.151400693           ~ 1 0
89 ** BUG 6A PM* 22 00 02.0336186351 -30 38 33.209964054           ~ 1 0
90 * eps Ind B BD* 22 04 10.52064 -56 46 57.7452     24.12 20.8 15.60 T1V+T6V 124 2
91 2MASS J22501628+0808245 BD* 22 50 16.2715308424 +08 08 24.744334772           L3.0 6 0
92 ULAS J230818.73+062951.4 BD? 23 08 18.73 +06 29 51.4           ~ 2 0
93 2MASS J23225240-6151114 LM* 23 22 52.4239734064 -61 51 11.472850492           M5 5 0
94 2MASS J23225299-6151275 BD* 23 22 53.0064947207 -61 51 27.498514431           L2gamma 19 0
95 2MASSI J2344062-073328 BD* 23 44 06.2501793828 -07 33 28.351634709           L6.0V 8 0
96 NAME AB Dor Moving Group MGr ~ ~           ~ 343 0

    Equat.    Gal    SGal    Ecl

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2020.03.29-12:08:55

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