Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29670
Title: Analogues of primeval galaxies two billion years after the Big Bang
Authors: Amorín, Ricardo
FONTANA, Adriano 
Pérez-Montero, Enrique
CASTELLANO, MARCO 
Guaita, Lucia
GRAZIAN, Andrea 
Le Fèvre, Olivier
Ribeiro, Bruno
Schaerer, Daniel
Tasca, Lidia A. M.
Thomas, Romain
BARDELLI, Sandro 
CASSARA, LETIZIA PASQUA 
CASSATA, PAOLO
CIMATTI, ANDREA
Contini, Thierry
de Barros, Stephane
GARILLI, BIANCA MARIA ROSA 
Giavalisco, Mauro
Hathi, Nimish
Koekemoer, Anton
Le Brun, Vincent
Lemaux, Brian C.
Maccagni, Dario
PENTERICCI, Laura
Pforr, Janine
Talia, Margherita
Tresse, Laurence
VANZELLA, Eros 
VERGANI, DANIELA 
ZAMORANI, Giovanni
ZUCCA, Elena 
MERLIN, Emiliano 
Issue Date: 2017
Journal: NATURE ASTRONOMY 
Number: 1
Issue: 3
First Page: 0052
Abstract: Deep observations are revealing a growing number of young galaxies in the first billion years of cosmic time<SUP>1</SUP>. Compared to typical galaxies at later times, they show more extreme emission-line properties<SUP>2</SUP>, higher star formation rates<SUP>3</SUP>, lower masses<SUP>4</SUP>, and smaller sizes<SUP>5</SUP>. However, their faintness precludes studies of their chemical abundances and ionization conditions, strongly limiting our understanding of the physics driving early galaxy build-up and metal enrichment. Here we study a rare population of ultraviolet-selected, low-luminosity galaxies at redshift 2.4 < z < 3.5 that exhibit all the rest-frame properties expected from primeval galaxies. These low-mass, highly compact systems are rapidly forming galaxies able to double their stellar mass in only a few tens of millions of years. They are characterized by very blue ultraviolet spectra with weak absorption features and bright nebular emission lines, which imply hard radiation fields from young hot massive stars<SUP>6,7</SUP>. Their highly ionized gas phase has strongly sub-solar carbon and oxygen abundances, with metallicities more than a factor of two lower than that found in typical galaxies of similar mass and star formation rate at z≤2.5<SUP>8</SUP>. These young galaxies reveal an early and short stage in the assembly of their galactic structures and their chemical evolution, a vigorous phase that is likely to be dominated by the effects of gas-rich mergers, accretion of metal-poor gas and strong outflows.
URI: http://hdl.handle.net/20.500.12386/29670
URL: https://arxiv.org/abs/1701.04416
https://www.nature.com/articles/s41550-017-0052
ISSN: 2397-3366
DOI: 10.1038/s41550-017-0052
Bibcode ADS: 2017NatAs...1E..52A
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

Files in This Item:
File Description SizeFormat 
Amorin2017.pdfpreprint2.39 MBAdobe PDFView/Open
Nat. Astr. s41550-017-0052.pdf[Administrators only]1.07 MBAdobe PDF
Show full item record

Page view(s)

7
checked on Jan 18, 2021

Download(s)

1
checked on Jan 18, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE