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2MASS星等转化为SDSS AB星等的IDL程序
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Function mag_2mass2sdss, mag_2mass, band=band
;+
;NAME:
; mag_2mass2sdss
;PUPOSE:
; transform 2MASS magitnitude to SDSS AB magnitude
;CALLING SEQUENCE:
; result=mag_2mass2sdss(mag_2mass, band='J')
;INPUT:
; mag_2mass ---- 2MASS magnitude
;OPTIONAL KEYWORD INPUT:
; band ----- 2MASS band
; 'J','H','Ks'
;OUTPUT:
; mag_AB ----- AB magnitude
;METHOD:
; see KRISTIAN FINLATOR
; ASTRONOMICAL JOURNAL,120,2615
; 'Optical and Infrared Colors of Stars Observed by the
; Two Micron All Sky Survey and the Sloan Digital Sky Survey'
;REVISION HISTORY:
; Original by DL.Wang,Oct-13-2007,Sat
;-
;Transform factor
mag00=[0.89, 1.37, 1.84]
case band of
'J':mag0=mag00[0]
'H':mag0=mag00[1]
'Ks':mag0=mag00[2]
endcase
mag_AB = mag_2mass + mag0
return,mag_AB
End
https://blog.sciencenet.cn/blog-456360-657729.html
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