2010AJ....139.2679B


Query : 2010AJ....139.2679B

2010AJ....139.2679B - Astron. J., 139, 2679-2699 (2010/June-0)

The luminosity and mass functions of low-mass stars in the galactic disk. II. The field.

BOCHANSKI J.J., HAWLEY S.L., COVEY K.R., WEST A.A., REID I.N., GOLIMOWSKI D.A. and IVEZIC Z.

Abstract (from CDS):

We report on new measurements of the luminosity function (LF) and mass function (MF) of field low-mass dwarfs derived from Sloan Digital Sky Survey Data Release 6 photometry. The analysis incorporates ∼15 million low-mass stars (0.1), spread over 8400 deg2. Stellar distances are estimated using new photometric parallax relations, constructed from ugriz photometry of nearby low-mass stars with trigonometric parallaxes. We use a technique that simultaneously measures Galactic structure and the stellar LF from 7 < Mr< 16. We compare the LF to previous studies and convert to an MF using the mass-luminosity relations of Delfosse et al. The system MF, measured over -1.0< log ←0.1, is well described by a lognormal distribution with = 0.25. We stress that our results should not be extrapolated to other mass regimes. Our work generally agrees with prior low-mass stellar MFs and places strong constraints on future theoretical star formation studies.

Abstract Copyright:

Journal keyword(s): brown dwarfs - Galaxy: stellar content - Galaxy: structure - stars: fundamental parameters - stars: late-type - stars: low-mass - stars: luminosity function, mass function

Errata: erratum vol. 143, art. 152 (2012)

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Cl Blanco 1 OpC 00 03 25 -29 57.5           ~ 284 0
2 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3234 0
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4020 0
4 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 753 0
5 M 16 OpC 18 18 45 -13 47.5   6.58 6.0     ~ 994 2
6 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1994 2

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2022.10.07-05:17:11

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