2014MNRAS.439.3890G

Query : 2014MNRAS.439.3890G

2014MNRAS.439.3890G - Mon. Not. R. Astron. Soc., 439, 3890-3907 (2014/April-3)

Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups.

GALVEZ-ORTIZ M.C., KUZNETSOV M., CLARKE J.R.A., PAVLENKO Ya.V., FOLKES S.L., PINFIELD D.J., JONES H.R.A., JENKINS J.S., BARNES J.R., BURNINGHAM B., DAY-JONES A.C., MARTIN E.L., GARCIA PEREZ A.E., DEL BURGO C. and POKORNY R.S.

Abstract (from CDS):

We present a study of age-related spectral signatures observed in 25 young low-mass objects that we have previously determined as possible kinematic members of five young moving groups: the Local Association (Pleiades moving group, age = 20-150Myr), the Ursa Major group (Sirius supercluster, age = 300Myr), the Hyades supercluster (age = 600Myr), IC 2391 supercluster (age = 35-55Myr) and the Castor moving group (age = 200Myr). In this paper we characterize the spectral properties of observed high- or low-resolution spectra of our kinematic members by fitting theoretical spectral distributions. We study signatures of youth, such as lithium i 6708Å, Hα emission and other age-sensitive spectroscopic signatures in order to confirm the kinematic memberships through age constraints. We find that 21 (84 per cent) targets show spectroscopic signatures of youth in agreement with the age ranges of the moving group to which membership is implied. For two further objects, age-related constraints remain difficult to determine from our analysis. In addition, we confirm two moving group kinematic candidates as brown dwarfs.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): brown dwarfs - stars: kinematics and dynamics - stars: low-mass

Simbad objects: 92

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Number of rows : 92
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 SIPS J0004-5721 PM* 00 04 19.1090059680 -57 21 23.360289012       19.78 16.798 M7.0 7 0
2 LEHPM 193 LM* 00 07 07.8920603112 -24 58 04.360686816       18.78 15.655 M7.7V 15 0
3 LP 825-35 ** 00 20 23.1814766544 -23 46 05.679024132   19.3   17.71   M6e 12 0
4 Koenigstuhl 1B BD* 00 21 05.9180929272 -42 44 43.525081140       19.46 16.79 L0.6:V 36 0
5 SSSPM J0027-5402 PM* 00 27 23.4487303749 -54 01 46.054961915   18.5 18.1 17.80 14.681 M7e 16 0
6 SIPS J0039-2256 PM* 00 39 23.5541561088 -22 56 44.081340396       20.24 16.710 M7.0 6 0
7 DENIS J004135.3-562112 LM* 00 41 35.3862348768 -56 21 12.872262132       17.97 14.69 M7.5e 39 0
8 SIPS J0054-4142 PM* 00 54 35.3646400152 -41 42 07.205498388       17.11 14.540 M5.0 6 0
9 LP 647-13 LM* 01 09 51.2021035859 -03 43 26.390003589   20.9 19.266 17.168 14.708 M9Ve 51 0
10 LEHPM 1289 PM* 01 09 59.5825334112 -24 16 47.879775362       18.66   ~ 9 0
11 SIPS J0115-2715 PM* 01 15 26.8399155024 -27 15 53.704237032       18.74 16.822 M5.5 4 0
12 2MASS J01230050-3610306 PM* 01 23 00.5363596752 -36 10 30.362428200       17.58   M5.0 4 0
13 SIPS J0126-1946 PM* 01 26 50.0902087488 -19 46 05.644758396       19.34 16.265 M6.5 6 0
14 LEHPM 1563 PM* 01 27 31.95648 -31 40 03.1764       18.75 15.79 M7 12 0
15 SIPS J0153-5122 PM* 01 53 11.7000720288 -51 22 24.262115988       18.41   M6.0 6 0
16 DENIS J020417.9-394507 PM* 02 04 18.0321424608 -39 45 06.286568472       18.81   M7.0 6 0
17 SIPS J0212-6049 PM* 02 12 33.7144421904 -60 49 18.794907804       18.61 15.752 M6.5 8 0
18 SIPS J0214-3237 PM* 02 14 45.5317620120 -32 37 58.153999224         16.224 M6.0 6 0
19 SIPS J0235-0711 LM* 02 35 49.5920205528 -07 11 21.113473992   21.0   17.78 14.463 M7V 17 0
20 2MASS J03341065-2130343 LM* 03 34 10.6583279184 -21 30 34.393504284       16.90   M6 12 0
21 LP 944-20 LM* 03 39 35.2523500210 -35 25 43.641996333     18.69 16.39 13.288 M9.5Ve 308 0
22 RX J0429.3-3124 LM* 04 29 18.4672536672 -31 23 56.743066104       16.2   M5.0Ve 36 0
23 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
24 LP 655-48 LM* 04 40 23.2746368923 -05 30 08.125383990   18.9 17.79 15.72 13.36 M7.5Ve 78 0
25 LEHPM 3833 PM* 04 45 43.3645488471 -53 21 34.617399797       18.47   M7.5 9 0
26 2MASS J05023867-3227500 PM* 05 02 38.6874500160 -32 27 50.105677968       17.67   M6.5 9 0
27 SIPS J0528-5919 PM* 05 28 05.6217322872 -59 19 47.114386788       19.49   M6 6 0
28 2MASS J06003375-3314268 LM* 06 00 33.7603611408 -33 14 26.762555868       18.73   M7.5 9 0
29 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 540 0
30 2MASS J08143545-4020492 LM* 08 14 35.4544447152 -40 20 49.203380580           M8.5 5 0
31 SIPS J1039-4110 LM* 10 39 18.3880877328 -41 10 33.296960424         14.321 M6e 8 0
32 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
33 SIPS J1124-2019 PM* 11 24 22.3175653200 -20 19 01.654767660       19.17 16.155 M7.0 6 0
34 2MASS J11465103-4754381 LM* 11 46 51.0326958480 -47 54 38.117884536       20.216 18.081 M7-8 3 0
35 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 467 1
36 2MASS J12363238-6536355 LM* 12 36 32.3858984280 -65 36 35.499149496       20.079 18.269 M4.0 2 0
37 APMPM J1251-2121 PM* 12 50 52.6489846010 -21 21 13.589571791   21.3 19.0 16.67   M7.5e 31 0
38 2MASS J13265348-5022270 LM* 13 26 53.4938450208 -50 22 27.036507072       20.299 17.972 M7.5 6 0
39 SIPS J1329-4147 LM* 13 29 01.0080805682 -41 47 13.520251037       19.30 16.95 M9 12 0
40 SIPS J1341-3052 BD* 13 41 11.6205057624 -30 52 50.572412580           L2.7:V 19 0
41 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 894 0
42 2MASS J14334194-5148037 LM* 14 33 41.9540162328 -51 48 03.681527256       19.699 17.437 M7e 3 0
43 2MASS J15072779-2000431 PM* 15 07 27.8095759920 -20 00 43.311514500       17.33   M7.5 26 0
44 2MASS J15572739-4350214 LM* 15 57 27.3859400160 -43 50 21.492384324       19.953 17.580 ~ 4 0
45 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
46 2MASS J16180891-3214361 LM* 16 18 08.9140161552 -32 14 36.285546660       19.963 17.805 M6.5 4 0
47 SIPS J1632-0631 LM* 16 32 58.8176003672 -06 31 48.396299611         15.879 M7e 19 0
48 2MASS J17343053-1151388 LM* 17 34 30.5367416205 -11 51 39.033175971       19.454 17.051 M9.0V 9 0
49 2MASS J17365608-0407258 LM* 17 36 56.0779348992 -04 07 25.940395416       20.445 18.627 M4-5 2 0
50 DENIS J174534.6-164053 BD* 17 45 34.6660802328 -16 40 53.952785508         17.11 L1.5 23 0
51 DENIS J175629.6-451822 BD* 17 56 29.63040 -45 18 22.4784       17.982 15.46 M9.0 11 0
52 SIPS J1758-6811 PM* 17 58 59.6898550920 -68 11 12.137442468       18.59 16.129 M5.5 6 0
53 DENIS J190908.1-193748 BD* 19 09 08.2041558024 -19 37 48.053503164         17.92 L1.0 17 0
54 SIPS J1949-7136 PM* 19 49 45.5570783784 -71 36 51.849458496       18.43 16.350 M7.0 6 0
55 SIPS J2000-7523 LM* 20 00 48.4144804656 -75 23 06.871799940     21.157 18.379 16.119 M9 31 0
56 SIPS J2001-5948 PM* 20 01 24.6470808408 -59 49 00.037956216       18.61   M6.0 6 0
57 SIPS J2014-2016 LM* 20 14 03.6354621552 -20 16 21.765108144         15.320 M7.5 11 0
58 SIPS J2031-5041 PM* 20 31 27.5160568848 -50 41 13.545947220       18.06   M5.5 6 0
59 SIPS J2039-1126 LM* 20 39 13.1375690856 -11 26 53.325084732       19.17 16.213 M8 14 0
60 SIPS J2045-6332 BD* 20 45 02.3962899912 -63 32 06.564757848       19.03 16.053 L1 22 0
61 SIPS J2049-1944 LM* 20 49 19.7504586496 -19 44 32.750924046       17.850 15.449 M7.5e 24 0
62 LP 816-10 PM* 20 49 52.7324575100 -17 16 08.465962357   18.6   16.93 14.003 M6.5V 20 0
63 SIPS J2100-6255 PM* 21 00 30.3329593752 -62 55 08.531271696         16.652 M5.0 4 0
64 2MASS J21062089-4044519 PM* 21 06 20.8956418776 -40 44 52.014711336       18.65   M6.0 6 0
65 SIPS J2114-4339 LM* 21 14 41.03208 -43 39 53.1648       18.61 15.450 M7.5pec 6 0
66 SIPS J2119-0740 PM* 21 19 17.6787834792 -07 40 53.591157408         16.659 M7.0 6 0
67 [HB88] M19 LM* 21 27 26.1235490160 -42 15 18.363907584   21.6 16.34 19.35 16.08 M8.9V 28 0
68 SIPS J2128-3254 ** 21 28 17.79360 -32 54 06.2136       16.28 13.375 M6.5 6 0
69 SIPS J2200-3038 ** 22 00 02.01888 -30 38 32.7120       19.2 16.7 M9+L0 30 1
70 SIPS J2200-2756 PM* 22 00 16.9196961744 -27 56 29.954932548       18.54 15.970 M6.0 6 0
71 DENIS J220710.2-691713 PM* 22 07 10.2837673680 -69 17 14.247681864       19.00   M6.5 6 0
72 LEHPM 4480 PM* 22 15 10.1272846920 -67 38 48.998911992       18.16   ~ 7 0
73 2MASS J22220368-4919234 PM* 22 22 03.6923297232 -49 19 23.379694608       19.66   M6.0 3 0
74 SIPS J2231-4443 PM* 22 31 08.6732671152 -44 43 18.451611804       17.77   M4.5 5 0
75 LEHPM 4908 ** 22 36 42.65592 -69 34 59.2968       17.74   M6.0 5 0
76 2MASS J22424129-2659272 PM* 22 42 41.2990401960 -26 59 27.113415936       17.91   M5.5 4 0
77 BD-15 6290 BY* 22 53 16.7325836486 -14 15 49.304052185 12.928 11.749 10.192 9.013 7.462 M3.5V 1106 1
78 2MASS J22545810-3228522 PM* 22 54 58.109 -32 28 52.20       18.55   M6.0 3 0
79 2MASS J23113032-5256301 PM* 23 11 30.3364366896 -52 56 30.179886216       19.11   M5.5 4 0
80 SSSPM J2319-4919 PM* 23 18 46.1444256792 -49 19 18.083241192   20.3 19.9 19.29 16.059 M8 7 0
81 SIPS J2321-6106 PM* 23 21 43.4130247920 -61 06 35.392502196       18.25   M5.5 6 0
82 SSSPM J2322-6358 PM* 23 22 05.6860248336 -63 57 57.983250888       19.39 16.446 M7.5e 6 0
83 SIPS J2341-3550 PM* 23 41 47.7182046024 -35 50 14.651046924       18.86 16.079 M7.0 6 0
84 SIPS J2343-2947 PM* 23 43 34.8966453360 -29 47 09.674594196       19.09 16.352 M8.0 6 0
85 SIPS J2347-1821 PM* 23 47 16.8083957208 -18 21 50.426591076       18.18 15.302 M6.5 6 0
86 SIPS J2350-6915 PM* 23 50 04.5323112120 -69 15 24.862678164       19.23 16.687 M6.0 6 0
87 LEHPM 6375 PM* 23 52 49.1318598240 -22 49 29.664578532       18.33   ~ 7 0
88 LEHPM 6542 PM* 23 57 54.8581012968 -19 55 01.929528300       18.41   ~ 6 0
89 NAME Pleiades Moving Group MGr ~ ~           ~ 297 0
90 NAME IC 2391 Moving Group MGr ~ ~           ~ 27 0
91 NAME Sirius Moving Group MGr ~ ~           ~ 125 0
92 NAME Castor Moving Group As* ~ ~           ~ 140 1

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