A Serendipitous Search for Hy-Redshift LyAlpha Emission: A Case Study of Two Sources at z≃ 3
Manning, Curtis · Stern, Daniel · Spinrad, Hyron · Bunker, Andrew J.
Original · EN
In the course of our on-going search for serendipitous high-redshift LyA emission in deep archival Keck spectra, we discovered two LyA emission line candidates in a moderate dispersion (λ/Δλ + 1200) spectrogram. Both lines have high equivalent width (EWobs>= 450A), low velocity dispersions (σᵥ 60 km/s), and deconvolved effective radii rₑ 1.0 h₅₀⁻¹ kpc. Their sizes and luminosities are suggestive of the primeval galaxy model of Lin & Murray (1992), based on the self-similar collapse of an isothermal sphere. We argue that the line emission is LyA, and it is stellar in origin. The sources are consistent with being primeval.
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