Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sf2a.conf..395w&link_type=abstract
SF2A-2010: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: S. Boissier, M. Heydari-
Astronomy and Astrophysics
Astrophysics
Galaxies: Star Formation, Galaxies: High Redshift, Galaxies: Evolution
Scientific paper
Lyman Break Galaxies (LBGs) have been the benchmarks against which other samples of high redshift galaxies have been compared for the last 2 decades. They are unique in that no other selection mechanism allows us to study galaxies selected in a consistent manner over redshifts 0.5≲ z≲ 7. An important remaining gap is the redshift range z˜1.5-2.5, which includes NUV-band dropouts. We searched for LBGs at this epoch using very sensitive multi-wavelength data from the FUV to mid-IR in the GOODS-S. We combined the dropout technique with color selection to identify star-forming galaxies at 1.5≲ z≲ 2.5. We find only a small overlap with the BM/BX selection method (Adelberger et al. 2004), and our sample of ˜ 200 z˜ 2 LBG candidates includes a significant number of relatively redder LBGs. By comparing our results to other selection methods for star-forming galaxies at z˜2 (BM/BX, BzK), we can show that the use of true dropout selection results in a cleaner, more efficient sample of LBG candidates. Our selected z˜ 2 LBG candidates are more consistent with LBG samples at z≤ 3 than BM/BX and BzK galaxies, despite our sample including relatively younger, lower mass systems.
Haberzettl Lutz
Lehnert Matt D.
Nesvadba P. H. N.
Valls-Gabaud David
Williger Gerard. M.
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