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An Infrared Emission Line Galaxy at z = 2.43 | | S.V.W. Beckwith
; D. Thompson
; F. Mannucci
; S.G. Djorgovski
; | | Date: |
22 Apr 1998 | | Subject: | astro-ph | | Abstract: | An object discovered during an infrared survey of the field near the quasar B2 0149+33 has an emission line at 2.25$mu$m that we interpret as H$alpha$ at a redshift of 2.43. The K-band image shows two compact components 10 kpc apart surrounded by more extended emission over ~20 kpc. The H$alpha$ emission appears to be extended over ~15 kpc (2") in a coarsely sampled (0".8/pixel) image. The star formation rate may be as high as 250 - 1000 M$_odot$ yr$^{-1}$, depending on the extinction. Alternatively, the line may be powered by an active nucleus, although the probability of serendipitously discovering an AGN in the survey volume is only ~0.02. The increasing number of similar objects reported in the literature indicate that they may be an important, unstudied population in the high redshift universe. | | Source: | arXiv, astro-ph/9804226 | | Services: | Forum | Review | PDF | Favorites | |
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