2mass-planck-allsky

An Emission-Line Protogalaxy Candidate at z=2.5

July 1995 • 1995ApJ...448L...5M

Authors • Malkan, M. • Teplitz, H. • McLean, I.

Abstract • Narrow-band infrared imaging has revealed a faint red galaxy with a strong (equivalent width = 2%) emission line at 2.30 mu m. The field was observed because of its proximity to the quasar SBS 0953+549, which has a metal-line absorption system at zabs = 2.50. The emission-line galaxy is only separated from the quasar line of sight by a projected distance of 240 kpc, and we identify the emission line as H alpha /[N II] in a galaxy which is in the same group as the z = 2.50 absorber. Since all the galaxy properties are also consistent with a young age and a redshift of 2.5, it is a prime candidate for a protogalaxy.

Links


IPAC Authors
(alphabetical)

Harry_teplitz

Harry Teplitz

Senior Scientist