Astrophysics
[Submitted on 27 Nov 2007 (v1), last revised 10 Apr 2014 (this version, v3)]
Title:2MTF I. The Tully-Fisher Relation in the 2MASS J, H and K Bands
View PDFAbstract:The 2 Micron All-Sky Survey (2MASS) Tully-Fisher Survey (2MTF) aims to measure Tully-Fisher (TF) distances to all bright inclined spirals in the 2MASS Redshift Survey (2MRS). Essential to this project is a universal calibration of the TF relation in the 2MASS J (1.2 um), H (1.6 um) and K (2.2 um) bands. We present the first bias corrected or universal TF template in these bands. We find that the slope of the TF relation becomes steeper as the wavelength increases being close to L \propto v^4 in K-band and L \propto v^3.6 in J and H-bands. We also investigate the dependence on galaxy morphology showing that in all three bands the relation is steeper for later type spirals which also have a dimmer TF zeropoint than earlier type spirals. We correct the final relation to that for Sc galaxies. Finally we study the scatter from the TF relation fitting for a width dependent intrinsic scatter which is not found to vary significantly with wavelength.
Submission history
From: Karen Masters [view email][v1] Tue, 27 Nov 2007 17:20:29 UTC (211 KB)
[v2] Wed, 26 Mar 2008 19:54:58 UTC (199 KB)
[v3] Thu, 10 Apr 2014 19:59:57 UTC (1,196 KB)
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