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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2020

SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release

R. Capasso
J. Brownstein
  • Fonction : Auteur
G. A. Mamon
E. Jullo
J Ider chitham
  • Fonction : Auteur

Résumé

SPIDERS (The SPectroscopic IDentification of eROSITA Sources) is a large spectroscopic programme for X-ray selected galaxy clusters as part of the Sloan Digital Sky Survey-IV (SDSS-IV). We describe the final dataset in the context of SDSS Data Release 16 (DR16): the survey overall characteristics, final targeting strategies, achieved completeness and spectral quality, with special emphasis on its use as a galaxy cluster sample for cosmology applications. SPIDERS now consists of about 27,000 new optical spectra of galaxies selected within 4,000 photometric red sequences, each associated with an X-ray source. The excellent spectrograph efficiency and a robust analysis pipeline yield a spectroscopic redshift measurement success rate exceeding 98%, with a median velocity accuracy of 20 km s^{-1} (at z=0.2). Using the catalogue of 2,740 X-ray galaxy clusters confirmed with DR16 spectroscopy, we reveal the three-dimensional map of the galaxy cluster distribution in the observable Universe up to z ~ 0.6. We highlight the homogeneity of the member galaxy spectra among distinct regions of the galaxy cluster phase space. Aided by accurate spectroscopic redshifts and by a model of the sample selection effects, we compute the galaxy cluster X-ray luminosity function and we present its lack of evolution up to z=0.6. Finally we discuss the prospects of forthcoming large multiplexed spectroscopic programmes dedicated to follow up the next generation of all-sky X-ray source catalogues.
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Dates et versions

hal-02898081 , version 1 (21-06-2022)

Identifiants

Citer

N. Clerc, C. C. Kirkpatrick, A. Finoguenov, R. Capasso, J. Comparat, et al.. SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release. Monthly Notices of the Royal Astronomical Society, 2020, 497 (3), pp.3976-3992. ⟨10.1093/mnras/staa2066⟩. ⟨hal-02898081⟩
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