Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Can intrinsic alignments of elongated low-mass galaxies be used to map the cosmic web at high redshift?

MPG-Autoren

Pandya,  Viraj
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Primack,  Joel
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Behroozi,  Peter
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dekel,  Avishai
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zhang,  Haowen
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Eckholm,  Elliot
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Faber,  Sandra M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ferguson,  Henry C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Giavalisco,  Mauro
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Guo,  Yicheng
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hathi,  Nimish
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kodra,  Dritan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Koekemoer,  Anton M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Koo,  David C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Newman,  Jeffrey
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

van der Wel,  Arjen
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Externe Ressourcen

https://ui.adsabs.harvard.edu/abs/2019MNRAS.488.5580P
(beliebiger Volltext)

Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Pandya, V., Primack, J., Behroozi, P., Dekel, A., Zhang, H., Eckholm, E., et al. (2019). Can intrinsic alignments of elongated low-mass galaxies be used to map the cosmic web at high redshift? Monthly Notices of the Royal Astronomical Society, 488, 5580-5593.


Zitierlink: https://hdl.handle.net/21.11116/0000-0005-D024-7
Zusammenfassung
Hubble Space Telescope observations show that low-mass (M_*=10^9-10^{10} M_{☉ }) galaxies at high redshift (z = 1.0-2.5) tend to be elongated (prolate) rather than disky (oblate) or spheroidal. This is explained in zoom-in cosmological hydrodynamical simulations by the fact that these galaxies are forming in cosmic web filaments where accretion happens preferentially along the direction of elongation. We ask whether the elongated morphology of these galaxies allows them to be used as effective tracers of cosmic web filaments at high redshift via their intrinsic alignments. Using mock light cones and spectroscopically confirmed galaxy pairs from the Cosmic Assembly Near-infared Deep Extragalactic Legacy Survey (CANDELS), we test two types of alignments: (1) between the galaxy major axis and the direction to nearby galaxies of any mass and (2) between the major axes of nearby pairs of low-mass, likely prolate, galaxies. The mock light cones predict strong signals in 3D real space, 3D redshift space, and 2D projected redshift space for both types of alignments (assuming prolate galaxy orientations are the same as those of their host prolate haloes), but we do not detect significant alignment signals in CANDELS observations. However, we show that spectroscopic redshifts have been obtained for only a small fraction of highly elongated galaxies, and accounting for spectroscopic incompleteness and redshift errors significantly degrades the 2D mock signal. This may partly explain the alignment discrepancy and highlights one of several avenues for future work.