2008MNRAS.383..831P


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.30CET23:19:31

2008MNRAS.383..831P - Mon. Not. R. Astron. Soc., 383, 831-844 (2008/January-3)

Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS data base.

PHAN-BAO N., BESSELL M.S., MARTIN E.L., SIMON G., BORSENBERGER J., TATA R., GUIBERT J., CRIFO F., FORVEILLE T., DELFOSSE X., LIM J. and DE BATZ B.

Abstract (from CDS):

We report on new nearby L and late-M dwarfs (dphot≤ 30 pc) discovered in our search for nearby ultracool dwarfs (I-J ≥ 3.0, later than M8.0) at low Galactic latitude (|b| < 15°) over 4800 deg2 in the Deep Near Infrared Survey of the Southern Sky (DENIS) data base. We used late-M (≥ M8.0), L and T dwarfs with accurate trigonometric parallaxes to calibrate the MJ versus I-J colour-luminosity relation. The resulting photometric distances have standard errors of ∼15 per cent, which we used to select candidates dphot≤ 30 pc. We measured proper motions from multi-epoch images found in the public archives ALADIN, DSS, 2MASS and DENIS, with at least three distinct epochs and time baselines of 10-21 yr. We then used a maximum reduced proper motion cut-off to select 28 candidates as ultracool dwarfs (M8.0-L8.0) and to reject one as a distant red star. No T dwarf candidates were found in this search, which required an object to be detected in all three DENIS bands. Our low-resolution optical spectra confirmed that 26 were indeed ultracool dwarfs, with spectral types from M8.0 to L5.5. Two contaminants and one rejected by the maximum reduced proper motion cut-off were all reddened F-K main sequence stars. 20 of these 26 ultracool dwarfs are new nearby ultracool dwarf members, three L dwarfs within 15 pc with one L3.5 at only ∼10 pc. We determine a stellar density of dwarfs/pc3/mag over 11.1 ≤ MJ≤ 13.1 based on this sample of M8-L3.5 ultracool dwarfs. Our ultracool dwarf density value is in good agreement with the measurement by Cruz et al. of the ultracool dwarf density at high Galactic latitude.

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

Journal keyword(s): techniques: photometric - techniques: spectroscopic - stars: low-mass, brown dwarfs - stars: luminosity function, mass function - solar neighbourhood

VizieR on-line data: <Available at CDS (J/MNRAS/383/831): tables.dat>

Simbad objects: 82

goto Full paper

goto View the reference in ADS

Number of rows : 82

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 L 362-29 B BD* 00 04 34.8641153471 -40 44 06.464450691       19.61 16.88 L5+L5 95 0
2 V* DY Psc BY* 00 24 24.6343271916 -01 58 19.968960103     19.42 17.301 15.022 M9.5V 190 1
3 2MASSW J0030300-145033 BD* 00 30 30.13224 -14 50 33.3960           L7V 36 0
4 LSPM J0036+1821 BD* 00 36 16.1119130763 +18 21 10.291990145       18.451 16.053 L3.5 188 0
5 RG 0050-2722 PM* 00 52 54.6987744919 -27 05 59.558907125     21.51     M7.5:V 39 0
6 SIPS J0128-5545 BD* 01 28 26.6440088291 -55 45 34.241303192         17.067 L1 15 0
7 2MASSW J0149090+295613 LM* 01 49 09.0007790598 +29 56 12.534059099           M9.5V 52 0
8 TVLM 832-10443 LM* 02 52 26.3015214909 +00 56 22.614567264           M8V 27 0
9 2MASS J03261367+2950152 BD* 03 26 13.67352 +29 50 15.2448           L3.5V 18 0
10 2MASSI J0328426+230205 BD* 03 28 42.65592 +23 02 05.1900           L9.5 44 0
11 LP 944-20 LM* 03 39 35.2525168530 -35 25 43.628465433     18.69 16.39 13.288 M9.5Ve 266 0
12 Cl* Melotte 22 KPNO 2 BD* 03 45 43.1604506693 +25 40 23.246972754         17.36 L0V 115 0
13 HD 33793 Ro* 05 11 40.5893175460 -45 01 06.353955874 11.624 10.433 8.853 7.9 6.899 M1VIp 286 0
14 2MASS J05395200-0059019 BD* 05 39 52.0036661257 -00 59 01.474175739           L5V 74 0
15 2MASS J05591914-1404488 BD* 05 59 19.1884616785 -14 04 49.215388622           T4.5 134 0
16 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 465 0
17 DENIS J061549.3-010041 BD* 06 15 49.3549619421 -01 00 41.659094164         17.00 L2.5 12 0
18 DENIS J063001.4-184014 LM* 06 30 01.4609493271 -18 40 14.825550559         15.88 M9.0V 8 0
19 DENIS J064414.3-284141 LM* 06 44 14.4139030405 -28 41 41.749065298         16.96 M9.5 7 0
20 2MASS J06492999-1541041 IR 06 49 29.9923466971 -15 41 04.061738193         18.36 ~ 1 0
21 [KKY2004] 112 MoC 06 49.5 -15 36           ~ 2 0
22 DENIS J065219.7-253450 BD* 06 52 19.7631187838 -25 34 50.466131332       19.3 15.96 L0.0 16 0
23 2MASS J07164790-0630369 BD* 07 16 47.9039277022 -06 30 36.942708123         17.46 L1.0 10 0
24 2MASS J07192345-1738587 IR 07 19 23.4547856396 -17 38 58.653677593         18.10 ~ 1 0
25 2MASS J07193586-1749103 IR 07 19 35.8733743175 -17 49 10.448613308         17.71 ~ 1 0
26 PN M 1-13 PN 07 21 15.037 -18 08 34.65   11.0       ~ 93 0
27 LSPM J0746+2000 BD* 07 46 42.49536 +20 00 32.6124       17.9 15.034 L0+L1.5 172 1
28 DENIS J075116.4-253043 BD* 07 51 16.3951502000 -25 30 43.042204212         16.53 L1.5 16 0
29 DENIS J080511.0-315811 LM* 08 05 11.0219343546 -31 58 11.464454559         16.01 M8.0 6 0
30 DENIS J081231.6-244442 BD* 08 12 31.7163139884 -24 44 42.472716658       19.458 17.27 L1.5 14 0
31 DENIS J082303.1-491201 BD* 08 23 03.1457502969 -49 12 01.265841098       20.020 17.14 L1.5 14 0
32 2MASSI J0825196+211552 BD* 08 25 19.6171008398 +21 15 51.565129705       21.97 19.22 L7.5V 104 0
33 SSSPM J0829-1309 BD* 08 28 34.1713208171 -13 09 19.842042734         16.07 L2 41 0
34 2MASS J08503593+1057156 BD* 08 50 35.93400 +10 57 15.6168       22.466 20.349 L6.5+L8.5 69 0
35 LP 666-9 LM* 08 53 36.1607609203 -03 29 32.201339067     18.959 16.781 14.487 M9Ve 226 0
36 2MASS J09211410-2104446 BD* 09 21 14.1078049422 -21 04 44.422366157         16.50 L1 36 0
37 2MASSI J0937347+293142 BD* 09 37 34.87968 +29 31 40.9908           T6 80 0
38 2MASSW J1047539+212423 BD* 10 47 53.85456 +21 24 23.4684           T6.5 72 0
39 DENIS J104814.6-395606 LM* 10 48 14.5734267094 -39 56 06.843210566     17.532 15.051 12.67 M8.5Ve: 115 0
40 DENIS J104827.8-525418 BD* 10 48 27.8698669504 -52 54 18.129558996       19.965 17.25 L1.5 7 0
41 DENIS J1058.7-1548 BD* 10 58 47.8360754207 -15 48 17.254347029       20.095 17.764 L3V 86 2
42 DENIS J112639.9-500355 BD* 11 26 39.8035292578 -50 03 54.849546892         17.800 L5.5 36 0
43 2MASS J11463449+2230527 BD* 11 46 34.49088 +22 30 52.7400           L3+L4 82 0
44 DENIS J115748.0-484442 BD* 11 57 48.0922231567 -48 44 42.844880952         17.25 L1.0 7 0
45 1RXS J115928.5-524717 LM* 11 59 27.3607245322 -52 47 18.910528784       16.617 14.49 M9Ve 25 0
46 2MASS J12171110-0311131 BD* 12 17 11.10288 -03 11 13.1748           T7.5 76 0
47 BR B1222-1221 LM* 12 24 52.1859545516 -12 38 35.708340589           M8e 46 0
48 DENIS J123217.8-685600 LM* 12 32 17.7464903743 -68 56 00.696983079         15.43 M8.0 3 0
49 2MASS J12373919+6526148 BD* 12 37 39.19632 +65 26 14.8092           T6.5 63 0
50 HD 111631 PM* 12 50 43.5668069413 -00 46 05.267056898 11.187 9.892 8.470 7.59 6.752 M0V 202 0
51 DENIS J125310.8-570924 BD* 12 53 10.9620497223 -57 09 24.848571988         16.74 L0.5 8 0
52 2MASS J12545393-0122474 BD* 12 54 53.9040607346 -01 22 47.399401142           T2e: 134 0
53 2MASS J13285503+2114486 BD* 13 28 55.03776 +21 14 48.6024           L5V 25 0
54 2MASS J13464634-0031501 BD* 13 46 46.34496 -00 31 50.1312           T6 69 0
55 DENIS J134759.0-761005 BD* 13 47 59.0491017887 -76 10 05.245413497       20.21 16.92 L0.0 4 0
56 LP 271-25 LM* 14 28 43.2272685950 +33 10 39.245755294   21.2   17.8   M9Ve 233 0
57 2MASS J14392836+1929149 BD* 14 39 28.36896 +19 29 14.9820           L1V 117 0
58 DENIS J145407.8-660447 BD* 14 54 07.9754454431 -66 04 47.444002883         16.90 L3.5 11 0
59 GJ 570 D BD* 14 57 14.96256 -21 21 47.7504           T8 196 1
60 TVLM 513-46 LM* 15 01 08.1871800643 +22 50 02.120480463   21.4 15.09 18.0   M8.5V 148 0
61 2MASSW J1507476-162738 BD* 15 07 47.6756748763 -16 27 40.118410414     22.136 18.928 16.579 L5V 172 0
62 TVLM 868-110639 LM* 15 10 16.8383355861 -02 41 08.050707379     20.505 18.035 15.664 M9V 55 0
63 DENIS J151901.6-741613 LM* 15 19 01.7858991301 -74 16 13.455266693         16.56 M9.0 2 0
64 2MASS J15200224-4422419 ** 15 20 02.24160 -44 22 41.9880       19.4 16.89 L1.5+L4.5 21 0
65 * eta CrB C BD* 15 23 22.63488 +30 14 56.2092           L8V 98 1
66 2MASS J15383166-1038507 * 15 38 31.6707581148 -10 38 50.714574407           M5/5.5e 6 0
67 2MASS J16241436+0029158 BD* 16 24 14.36712 +00 29 15.8172           T6V 131 0
68 2MASS J16322911+1904407 BD* 16 32 29.11416 +19 04 40.7136       22.42 19.98 L8V 119 0
69 VB 8 Er* 16 55 35.2561420232 -08 23 40.752903617   18.7 16.916 14.566 12.24 M7Ve 387 0
70 LSPM J1658+7027 BD* 16 58 03.8018285595 +70 27 01.703368353       19.0   L1(e) 33 0
71 DENIS J170547.4-544151 LM* 17 05 47.4269185940 -54 41 51.339685217       19.090 16.66 M8.5 6 0
72 DENIS J173342.3-165449 BD* 17 33 42.2753954344 -16 54 50.117721351         16.82 L1.0 9 0
73 DENIS J174534.6-164053 BD* 17 45 34.6668182094 -16 40 53.961533063         17.11 L1.5 12 0
74 DENIS J175629.6-451822 LM* 17 56 29.63040 -45 18 22.4784       17.982 15.46 M9.0 7 0
75 DENIS J175656.1-480509 BD* 17 56 56.2079723621 -48 05 09.629197908         16.76 L0.0 6 0
76 DENIS J190908.1-193748 BD* 19 09 08.2038357985 -19 37 48.058962771         17.92 L1.0 9 0
77 VB 10 Er* 19 16 57.6103282334 +05 09 01.588675251     17.30     M8V 438 1
78 LAWD 74 WD* 19 20 34.9229875534 -07 40 00.066805378 11.553 12.345 12.290 12.229 12.164 DBQA5 201 0
79 * eps Ind B BD* 22 04 10.52064 -56 46 57.7452     24.12 20.8 15.60 T1V+T6V 134 2
80 2MASSW J2224438-015852 BD* 22 24 43.8550503291 -01 58 53.265872547           L4.5V 107 0
81 2MASS J22431696-5932206 BD* 22 43 16.9745933546 -59 32 20.424376510       20.24 17.272 L0:: 10 0
82 2MASSI J2356547-155310 BD* 23 56 54.77040 -15 53 11.1336           T5.8 39 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008MNRAS.383..831P and select 'bookmark this link' or equivalent in the popup menu


2020.11.30-23:19:31

© Université de Strasbourg/CNRS

    • Contact