Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Cosmological evolution of the Nitrogen abundance

Vangioni, E., Dvorkin, I., Olive, K. A., Dubois, Y., Molaro, P., Petitjean, P., et al. (2018). Cosmological evolution of the Nitrogen abundance. Monthly Notices of the Royal Astronomical Society, 477, 56-66. doi:10.1093/mnras/sty559.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Dateien

einblenden: Dateien
ausblenden: Dateien
:
1710.10075.pdf (Preprint), 983KB
Name:
1710.10075.pdf
Beschreibung:
File downloaded from arXiv at 2018-06-11 10:43
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
:
MNRAS477_56.pdf (Verlagsversion), 2MB
 
Datei-Permalink:
-
Name:
MNRAS477_56.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Eingeschränkt (Max Planck Institute for Gravitational Physics (Albert Einstein Institute), MPGR; )
MIME-Typ / Prüfsumme:
application/pdf
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Vangioni, Elisabeth, Autor
Dvorkin, Irina1, Autor           
Olive, Keith A., Autor
Dubois, Yohan, Autor
Molaro, Paolo, Autor
Petitjean, Patrick, Autor
Silk, Joe, Autor
Kimm, Taysun, Autor
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

Inhalt

einblenden:
ausblenden:
Schlagwörter: Astrophysics, Galaxy Astrophysics, astro-ph.GA,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO
 Zusammenfassung: The abundance of nitrogen in the interstellar medium is a powerful probe of star for- mation processes over cosmological timescales. Since nitrogen can be produced both in massive and intermediate-mass stars with metallicity-dependent yields, its evolution is challenging to model, as evidenced by the differences between theoretical predictions and observations. In this work we attempt to identify the sources of these discrepancies using a cosmic evolution model. To further complicate matters, there is considerable dispersion in the abundances from observations of DLAs at redshift 2 - 3. We study the evolution of nitrogen with a detailed chemical evolution model and find good agreement with observations, including the relative abundances of N/O and N/Si ratios. We find that the principal contribution of nitrogen comes from intermediate mass stars, with the exception of systems with the lowest N/H, where nitrogen production might possibly be dominated by massive stars. This last result could be strengthened if stellar rotation which is important at low metallicity can produce significant amounts of nitrogen. Moreover, these systems likely reside in host galaxies with stellar masses below 10**8.5 solar mass. We also study the origin of the observed dispersion in nitrogen abundances using the cosmological hydrodynamical simulations Horizon-AGN. We conclude that this dispersion can originate from two effects: differ- ence in the masses of the DLA host galaxies, and difference in the their position inside the galaxy.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2017-10-272018-02-262018
 Publikationsstatus: Erschienen
 Seiten: accepted for publication in MNRAS
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Monthly Notices of the Royal Astronomical Society
  Andere : Mon. Not. R. Astron. Soc.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Oxford : Oxford University Press
Seiten: - Band / Heft: 477 Artikelnummer: - Start- / Endseite: 56 - 66 Identifikator: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150