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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2022

CHANG-ES XXVII: A radio/X-ray catalogue of compact sources in and around edge-on galaxies

Judith Irwin
Jacqueline Dyer
  • Fonction : Auteur
Leonardo Drake
  • Fonction : Auteur
Q Daniel Wang
Jeroen Stil
  • Fonction : Auteur
Jayanne English
  • Fonction : Auteur
Theresa Wiegert
  • Fonction : Auteur

Résumé

Abstract We present catalogues of discrete, compact radio sources in and around the discs of 35 edge-on galaxies in the Continuum Halos in Nearby Galaxies – an EVLA Survey (CHANG-ES). The sources were extracted using the PyBDSF program at both 1.6 GHz (L-band) and 6.0 GHz (C-band) from matching resolution (≈ 3 arcsec) data. We also present catalogues of X-ray sources from Chandra data sets for 27 of the galaxies. The sources at the two radio frequency bands were positionally cross-correlated with each other, and the result cross-correlated with the X-ray sources. All catalogues are included for download with this paper. We detect a total of 2507 sources at L-band and 1413 sources at C-band. Seventy-five sources have been successfully cross-correlated in both radio bands plus X-ray. Three new nuclear sources are candidates for Low Luminosity Active Galactic Nuclei in NGC 3877, NGC 4192, and NGC 5792; the one in NGC 3877 also appears to be variable. We also find new nuclear sources in two companion galaxies: NGC 4435 (companion to NGC 4438) and NGC 4298 (companion to NGC 4302). We have also discovered what appears to be a foreground double-star; each star has X-ray emission and there is radio emission at both L-band and C-band in between them. This could be a colliding wind binary system. Suggestions for follow-up studies are offered.
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hal-03615049 , version 1 (22-03-2023)

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Judith Irwin, Jacqueline Dyer, Leonardo Drake, Q Daniel Wang, Jeroen Stil, et al.. CHANG-ES XXVII: A radio/X-ray catalogue of compact sources in and around edge-on galaxies. Monthly Notices of the Royal Astronomical Society, 2022, ⟨10.1093/mnras/stac659⟩. ⟨hal-03615049⟩
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