THE INFORMATION OF THE MILKY WAY FROM TWO MICRON ALL SKY SURVEY WHOLE SKY STAR COUNT: THE LUMINOSITY FUNCTION

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50796

Title:	THE INFORMATION OF THE MILKY WAY FROM TWO MICRON ALL SKY SURVEY WHOLE SKY STAR COUNT: THE LUMINOSITY FUNCTION
Authors:	Chang,CK;Ko,CM;Peng,TH
Contributors:	天文研究所
Keywords:	GALACTIC MODEL PARAMETERS;HIGH-LATITUDES;2MASS;DENSITY;SDSS;DISTANCE;GALAXY;PLANE;FLARE;SOUTH
Date:	2010
Issue Date:	2012-03-27 18:10:18 (UTC+8)
Publisher:	國立中央大學
Abstract:	The logarithmic differential star count of the Two Micron All Sky Survey in K(s) band can be well approximated by a single power-law luminosity function. With a fiducial Galactic structure, we measure the luminosity function for the entire Milky Way. The distribution of the power-law index is roughly isotropic and shows no obvious trend with the Galactic latitude. The value for the power-law index, the bright and the faint ends of the luminosity function are 1.85 +/- 0.035, K(s) = -7.86 +/- 0.60 mag, and K(s) = 6.88 +/- 0.66 mag, respectively. Our result strongly supports the notion of a universal luminosity function in our Galaxy. We also find that the luminosity function of LMC/SMC is similar to that of the Milky Way.
Relation:	ASTROPHYSICAL JOURNAL
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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