The Ohio State University
College of Mathematical & Physical Sciences
Department of Astronomy

Photometric Data

This page provides links to the tables and finding charts of faint, near-infrared standards published by Persson et al. [1998 AJ, 116, 2475]. Below we also tabulate the flux measurements of Vega by Cohen et al. [1992 AJ, 104, 1650] for convenience.

Faint Standards [Postscript (13kb)]

Red Standards [Postscript (9kb)]

Finding Charts [Postscript (1.7Mb gzipped)]

**Table 1: Near-Infrared Photometric Data**
Filter Name	Central Wavelength (um)	Filter Width (um)	Flux (W m^-2 um^-1)	Flux (Jy)	N (photons s^-1 m^-2 um^-1)
J	1.215	0.26	3.31 x 10^-9	1630	2.02 x 10¹⁰
H	1.654	0.29	1.15 x 10^-9	1050	9.56 x 10⁹
K	2.179	0.41	4.14 x 10^-10	655	4.53 x 10⁹
K_s	2.157	0.32	4.30 x 10^-10	667	4.66 x 10⁹

Note: This information was obtained from A.T.Tokunaga (1997) in Astrophysical Quantities, 4th Edition, editor A. Cox

Updated: 2006 June 2