BzK galaxy

In astrophysics, a BzK galaxy is a galaxy that has been selected as star-forming or passive based on its photometry in the B, z, and K photometric bands.

The selection criteria, as originally defined,^[1] are as follows:

Star-forming BzK (sBzK) galaxies satisfy: $BzK \equiv (z-K)_{AB} - (B-z)_{AB} \geq -0.2$
Passive BzK (pBzK) galaxies satisfy: $BzK < -0.2$ and $(z-K)_{AB} > 2.5$

See also

Lyman-break galaxy

References

↑ "A New Photometric Technique for the Joint Selection of Star-forming and Passive". adsabs.harvard.edu. Retrieved 2014-05-13.