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Exploring Faint Emission Line Galaxies at z~1.5: Implications for Misidentification in Cosmic Surveys

This study delves into the discovery and prediction of emission line galaxies at z~1.5, showcasing their unique properties like extreme equivalent widths. Through a comprehensive survey analysis, potential contamination and misidentifications as galaxies at different redshifts are highlighted. The research offers insights into the implications of such misidentifications on the broader understanding of distant galaxies.

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Exploring Faint Emission Line Galaxies at z~1.5: Implications for Misidentification in Cosmic Surveys

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  1. CLASH Prediction and Discovery Survey Limit Postman et al. 2011 London

  2. Candidates of z~10 in CANDLES Oesch et al. 2013 London

  3. Candidate of z~12 in UDF Bouwens et al. 2011 London

  4. UDF-JD Ellis et al. 2013 London

  5. Star Formation Rate Density Oesch et al. 2013 London

  6. Extreme Emission Line Galaxies Brammer et al. 2013 London

  7. Potential Contamination London

  8. Emission Lines in Broad Bands London

  9. Color Selection Coe et al. 2013 London

  10. Emission Line Galaxies in CLASH Database • 58 candidates in J sample (F125W) • 21 candidates in Y sample (F105W) • Continuum magnitude 24-30 • Largest EW >3000 Å in restframe • Source density ~3× CANDELS London

  11. Equivalent Width vs. Magnitude London

  12. Distribution of Magnification London

  13. Broad Band Property in Y Sample London

  14. Broad Band Property in J Sample London

  15. Candidates with Extreme High EW London

  16. Summary • Emission line galaxies of z~1.5 are common at the faint end • Some of them exhibit very large equivalent widths • Potential misidentification as z~7 galaxies with very blue continuum • Potential misidentification with z~11 galaxies London

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