A Census of Observed Brown Dwarfs


I. Invisible Binaries

Name: Search Method: Pedigree (method): Spectral Type: Mass (in M_Jup): Age: Period (days): Eccentricity:
HD 98230 Doppler B-: stat F8.5 >37 >2Gyr 4 .00
HD 114762 Doppler A: stat F9 >11 >2Gyr 84 .35
HD 140913 Doppler B: stat G0 >46 >2Gyr 148 .54
HD 29587 Doppler B: stat G2 >55 >2Gyr 1481 .33
70 Vir Doppler A: stat G4 >7 >2Gyr 117 .37
HD 110833 Doppler A-: stat K3 >17 >2Gyr 270 .69
GJ 1069 Doppler A-: stat K5 >21 >2Gyr 241 .28
HD 112758 Doppler B+: stat K0 >35 >2Gyr 103 .16
HD 18445 Doppler B+: stat K2 >39 >2Gyr 555 .54
GL 171.2 Doppler B: stat K2 >50 >2Gyr 1.8 .02
HD 89707 Doppler B: stat G1 >54 >2Gyr 300 .95
HD 217580 Doppler B: stat K4 >60 >2Gyr 455 .52


II. Observable Binaries

Name: Search Method: Pedigree (method): Spectral Type: Mass (in M_Jup): Age: Period (days): Eccentricity:
GD 165B imaging B: Teff (L2) 67-78 1-4Gyr long ?
Gl 229B coron.im. A+: Teff (L8) 30-50 2-5Gyr long ?
PPL 15 A,B photometry A: lithium M6.5 65-70 0.1Gyr 6 .5
DI Tau B imaging C: L,color M7 70-80 1-2Myr long ?


III. Young Clusters

Name: Search Method: Pedigree (method): Spectral Type: Mass (in M_Jup): Age: Cluster:
Teide 1 photometry A: lithium M8 55-60 0.1Gyr Pleiades
Calar 3 photometry A: lithium M8 55-60 0.1Gyr Pleiades
Teide 2 photometry A-: lithium M7 65-70 0.1Gyr Pleiades
PIZ 1 photometry B: Teff M8 55-60 0.1Gyr Pleiades
Roque 25 photometry A-: Teff (L1) 35-45 0.1Gyr Pleiades
Roque# (~15) photometry B: Teff M,L 40-75 0.1Gyr Pleiades
AP 270 photometry C:lithium M6.5 75-80 65Myr Alpha Per
CFHT (several) photometry A:lithium M6-7 60-75 0.1Gyr Pleiades
more coming . . . . . .


IV. Star Forming regions

Name: Search Method: Pedigree (method): Spectral Type: Mass (in M_Jup): Age: Cluster:
several photometry C-B: L,color M5-8.5 60-80 1-2Myr Rho Oph
several photometry C-B: L,color M5-6 60-80 1-2Myr Taurus
several photometry C-B: L,Teff M7-9 60-80 0.5-1Myr Orion
more coming . . . . . .


V. Field Brown Dwarfs

Name: Search Method: Pedigree (method): Spectral Type: Mass (in M_Jup): Age: I mag:
269A photometry C: lithium M6 70-75 <.5Gyr 17.4
Kelu-1 proper mot. A: lithium,Teff (L2) 50-60 <1Gyr 16.8
DENIS 19 IR survey A: lithium,Teff (L4) 45-65 <1Gyr 18.2
DENIS 22 IR survey B: Teff (L3) 65-70 1-2Gyr 17.8
DENIS 37 IR survey A: Teff (L5) 60-65 1-2Gyr 18.3
LP 944-20 IR survey A: lithium,Teff . . . .
2MASS 1 IR survey A: lithium,Teff (L?) . . .
2MASS 2 IR survey A: lithium,Teff . . . .
+ 3-n IR survey B: Teff . . . .
many more from DENIS, 2MASS to come ...


Last updated: April 27, 1998