2007MNRAS.378.1131C

Query : 2007MNRAS.378.1131C

2007MNRAS.378.1131C - Mon. Not. R. Astron. Soc., 378, 1131-1140 (2007/July-1)

Proper motion L and T dwarf candidate members of the Pleiades.

CASEWELL S.L., DOBBIE P.D., HODGKIN S.T., MORAUX E., JAMESON R.F., HAMBLY N.C., IRWIN J. and LODIEU N.

Abstract (from CDS):

We present the results of a deep optical-near-infrared (optical-NIR) multi-epoch survey covering 2.5 deg2 of the Pleiades open star cluster to search for new very low-mass brown dwarf members. A significant (∼5 yr) epoch difference exists between the optical (CFH12k I-, Z-band) and NIR (UKIRT WFCAM J-band) observations. We construct I, I - Z and Z, Z - J colour-magnitude diagrams to select candidate cluster members. Proper motions are computed for all candidate members and compared to the background field objects to further refine the sample. We recover all known cluster members within the area of our survey. In addition, we have discovered nine new candidate brown dwarf cluster members. The seven faintest candidates have red Z - J colours and show blue NIR colours. These are consistent with being L- and T-type Pleiads. Theoretical models predict their masses to be around 11MJup.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): stars: low-mass, brown dwarfs - open clusters and associations: individual: Pleiades

Nomenclature: Table 4: Cl* Melotte 22 PlZJ NNN N=23 among (Nos 4-721).

Errata: erratum vol. 402, p.1407 (2010)

Simbad objects: 35

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Number of rows : 35
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 Cl* Melotte 22 PLZJ 323 * 03 43 55.27 +25 43 26.2           ~ 1 0
2 Cl* Melotte 22 PLZJ 50 PM* 03 43 55.9966846392 +25 36 25.534668384         17.239 ~ 11 0
3 Cl* Melotte 22 BRB 4 LM* 03 44 23.2342185648 +25 38 45.137111208         17.005 M6.5V 10 0
4 Cl* Melotte 22 PLIZ 1262 BD* 03 44 27.28298 +25 44 41.9744         22.235 L2.0 6 0
5 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
6 Cl* Melotte 22 PLIZ 2141 BD* 03 44 31.27050 +25 35 15.0036         22.043 L1.8 6 0
7 Cl* Melotte 22 CFHT 10 LM* 03 44 32.3222638968 +25 25 18.175050156         17.592 M6.5 20 0
8 Cl* Melotte 22 PLZJ 56 PM* 03 44 53.5221080808 +25 36 19.458466884         17.012 ~ 1 0
9 * 23 Tau Be* 03 46 19.5858871361 +23 56 54.092177220 3.70 4.12 4.18   4.16 B6IV(e) 446 2
10 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
11 Cl* Melotte 22 PLZJ 100 BD? 03 47 19.19 +25 50 53.3           ~ 2 0
12 Cl* Melotte 22 PLIZ 31 LM* 03 51 47.660 +24 39 58.90         20.944 M8.1 7 0
13 Cl* Melotte 22 PLZJ 23 BD* 03 51 53.380 +24 38 12.11         23.541 L8 2 0
14 Cl* Melotte 22 BRB 8 LM* 03 52 05.8178078136 +24 17 31.213029912       19.32 17.34 M5.6 20 0
15 Cl* Melotte 22 PLIZ 3 LM* 03 52 06.7084395888 +24 16 00.643676448         18.02 M6.0 28 0
16 Cl* Melotte 22 PLZJ 235 G 03 52 32.570 +24 44 36.64           ~ 2 1
17 Cl* Melotte 22 PLIZ 35 BD* 03 52 39.14137 +24 46 29.7814         21.293 L2.0 8 0
18 Cl* Melotte 22 BRB 28 LM* 03 52 54.89956 +24 37 18.5139       25.00 22.36 ~ 4 0
19 Cl* Melotte 22 PLZJ 112 G 03 53 19.370 +24 53 31.85           ~ 2 1
20 Cl* Melotte 22 PLIZ 6 LM* 03 53 55.1153189928 +23 23 36.301442892         17.752 M8.0 26 0
21 Cl* Melotte 22 PLIZ 20 LM* 03 54 05.32560 +23 33 59.7708         19.571 M9.0 16 0
22 Cl* Melotte 22 BRB 21 BD* 03 54 10.27245 +23 41 40.3586       24.02 21.68 L3.0 8 0
23 Cl* Melotte 22 PLIZ 28 BD* 03 54 14.05703 +23 17 52.2063         20.760 L0.0 9 0
24 Cl* Melotte 22 PLZJ 721 G 03 55 07.140 +24 57 22.34           ~ 2 1
25 Cl* Melotte 22 PLZJ 93 BD? 03 55 13.00 +24 36 15.8         24.488 ~ 3 0
26 Cl* Melotte 22 PLIZ 2 LM* 03 55 23.0746108704 +24 49 05.221060212         17.719 M7.1 23 0
27 V* AB Dor B ** 05 28 44.4839440512 -65 26 46.035814884           M5+M5-6 99 0
28 V* AB Dor C LM* 05 28 44.83 -65 26 54.9           M8: 71 0
29 V* AB Dor TT* 05 28 44.8712165880 -65 26 55.199147208 8.259 7.856 6.999 6.496 5.993 K0V 1080 0
30 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
31 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
32 NAME sig Ori Cluster OpC 05 38 42 -02 36.0           ~ 623 0
33 SA 98- reg 06 52 04.1 -00 23 58           ~ 179 0
34 BD+16 2708B SB* 14 54 29.4185719182 +16 06 08.616294953           M8.5 143 0
35 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1

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