SRG/eROSITA sources in Hyades Virtual Observatory Resource

Authors
  1. Khamitov I.M.
  2. Bikmaev I.F.
  3. Gilfanov M.R.
  4. Sunyaev R.A.
  5. Medvedev P.S.,Gorbachev M.A.
  6. Sklyanov A.S.
  7. Efremova P.D.
  8. Panarin S.S.
  9. Published by
    CDS
Abstract

Using data from the all-sky X-ray survey with the eROSITA telescope onboard the SRG orbital observatory and the optical catalog of Hyades cluster members constructed from Gaia data (2023A&A...678A..75Z), we have investigated the X-ray emission from cluster stars. Of the 395 cluster members located in the eastern Galactic part of the sky, eROSITA detects X-ray emission from 290 stars, 171 of which have been found for the first time in X-rays. At the Hyades distance (~47pc) the median eROSITA sensitivity in this sky region corresponds to a 0.3-2.3keV luminosity L_X_~2.6x10^27^erg/s, allowing 100% of the stars with spectral types from F0 to K5 to be detected within the Hyades tidal radius. We have also investigated objects in the Hyades tidal tail (2019A&A...621L...3M, 2019A&A...621L...2R), where X-ray emission was recorded from 114 of the 281 known tidal tail members, 59 of which have been found in X-rays for the first time.

Keywords
  1. open-star-clusters
  2. x-ray-sources
Bibliographic source Bibcode
2025AstL...51..412K
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History

2026-03-11T08:45:15Z
Resource record created
2026-03-11T08:45:15Z
Created
2026-04-02T06:28:33Z
Updated

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