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  • 2006.15084v1

    Accepted author manuscript, 7.11 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

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J-PLUS: Unveiling the brightest-end of the Lyα luminosity function at 2.0<z<3.3 over 1000 deg2

Research output: Contribution to journalJournal article

Forthcoming
  • Daniele Spinoso
  • Alvaro Orsi
  • Carlos López-Sanjuan
  • Silvia Bonoli
  • Kerttu Viironen
  • David Izquierdo-Villalba
  • Siddhartha Gurung-López
  • Antonio Hernán-Caballero
  • Alessandro Ederoclite
  • Jesús Varela
  • Roderik Overzier
  • Jordi Miralda-Escudé
  • David J. Muniesa
  • Jailson Alcaniz
  • Raul E. Angulo
  • A. Javier Cenarro
  • David Cristóbal-Hornillos
  • Renato A. Dupke
  • Carlos Hernández-Monteagudo
  • Antonio Marín-Franch
  • Mariano Moles
  • Laerte Sodré Jr
  • Héctor Vázquez-Ramió
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<mark>Journal publication date</mark>8/09/2020
<mark>Journal</mark>Astronomy and Astrophysics
Publication StatusAccepted/In press
<mark>Original language</mark>English

Abstract

We present the photometric determination of the bright-end (L_Lya>10^43.5 erg/s) of the Lya luminosity function (LF) within four redshifts windows in the interval 2.210^43.3 erg/s) Lya-emitting candidates. We test our selection with two spectroscopic follow-up programs at the GTC telescope, confirming ~89% of the targets as line-emitting sources, with ~64% being genuine z~2.2 QSOs. We extend the 2.22 AGN/QSOs (likely dominant in our samples) are described by a structurally different LF than z>2 star-forming LAEs, namely with L^*_QSOs ~ 100 L^*_LAEs and Phi^*_QSOs ~ 10^-3 Phi^*_LAEs. Finally, our method identifies very efficiently as high-z line-emitters sources without previous spectroscopic confirmation, currently classified as stars (~2000 objects in each redshift bin, on average). Assuming a large predominance of Lya-emitting AGN/QSOs in our samples, this supports the scenario by which these are the most abundant class of z>2 Lya emitters at L_Lya>10^43.3 erg/s.

Bibliographic note

27 pages (6 in appendix), 21 figures (5 in appendix), submitted to A&A