2MTF. I. The Tully-Fisher relation in the two micron all sky survey J, H, and K bands
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
The Two 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 μm), H (1.6 μm), and K (2.2 μm) 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 ∝ v {sup 4} in the K band and L ∝ v {sup 3.6} in the 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 zero point 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.
- OSTI ID:
- 22340254
- Journal Information:
- Astronomical Journal (New York, N.Y. Online), Vol. 135, Issue 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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