Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-05-16
Astronomy and Astrophysics
Astrophysics
LaTeX with ApJ journal format, 2 postscript figures, ApJL, accepted
Scientific paper
10.1086/311462
Near-infrared imaging and spectroscopy have been obtained of the gravitationally lensed galaxy at z=4.92 discovered in HST images by Franx et al. (1997). Images at 1.2, 1.6 and 2.2 microns show the same arc morphology as the HST images. The spectrum with resolution \lambda / \Delta\lambda ~ 70 shows no emission lines with equivalent width stronger than 100 A in the rest frame wavelength range 0.34 to 0.40 microns. In particular, [OII]3727 A and [NeIII]3869 A are not seen. The energy distribution is quite blue, as expected for a young stellar population with the observed Ly alpha flux. The spectral energy distribution can be fit satisfactorily for such a young stellar population when absorption by dust is included. The models imply a reddening 0.1 mag < E(B-V) < 0.4 mag. The stellar mass of the lensed galaxy lies in the range of 2 to 16 x 10^9 Msun. This is significantly higher than estimates based on the HST data alone. Our data imply that absorption by dust is important to redshifts of ~5.
Franx Marijn
Illingworth Garth
Matthews Keith
Neugebauer Gernot
Soifer Thomas B.
No associations
LandOfFree
Near Infrared Observations of a Redshift 4.92 Galaxy: Evidence for Significant Dust Absorption does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Near Infrared Observations of a Redshift 4.92 Galaxy: Evidence for Significant Dust Absorption, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near Infrared Observations of a Redshift 4.92 Galaxy: Evidence for Significant Dust Absorption will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-640593