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Peer-reviewedCC BY 4.0The Astronomical Journal

CHANG-ES XLI: Data Release 5—VLA C-configuration Images

  • René Walterbos1
  • Theresa Wiegert2
  • Michael Stein3
  • Judith Irwin4
  • Tanden Cook4
  • Ancor Damas-Segovia5
  • Jayanne English6
  • Volker Heesen7
  • Jiangtao Li8
  • Scott Macdonald9
  • Arpad Miskolczi10
  • Michael Radica11
7 more authors
  • Nathan Skeggs4
  • Carlos Vargas12
  • Q. Daniel Wang13
  • Marek Weżgowiec14
  • Jianghui Xu15
  • Yang Yang16
  • The CHANG-ES consortium
16 affiliations
  1. 1New Mexico State University
  2. 2Instituto de Astrofísica de Andalucía (IAA-CSIC)
  3. 3Ruhr University Bochum
  4. 4Queen’s University
  5. 5Max Planck Institute for Radioastronomy
  6. 6University of Manitoba
  7. 7University of Hamburg
  8. 8Chinese Academy of Sciences
  9. 9Herzberg Astronomy and Astrophysics
  10. 10Forschungszentrum Jülich
  11. 11University of Chicago
  12. 12Department of Astronomy
  13. 13University of Massachusetts
  14. 14Obserwatorium Astronomiczne Uniwersytetu Jagiellońskiego
  15. 15University of Science and Technology of China
  16. 16Xiangtan University Xiangtan
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Abstract

We present Data Release 5 (DR5) of the Continuum Halos in Nearby Galaxies—an EVLA Survey (CHANG-ES), including select data products. These data were observed with the Karl G. Jansky Very Large Array (VLA) in C configuration, in the L band (1.575 GHz) and C band (6.0 GHz) for all 35 edge-on galaxies in the CHANG-ES sample. We combine the new C-configuration L-band images with our previously released D-configuration C-band data, together with H α and Wide-field Infrared Survey Explorer 22 μ m infrared maps, to separate the thermal and nonthermal radio continuum emission across all 34 galaxies for which H α data are available. This yields spatially resolved maps of the thermal fraction, total and nonthermal band-to-band spectral index, and star formation rate at 15″ resolution. Together with total intensity images at two weightings, these data products are included in an atlas presented here and made publicly available at https://projects.canfar.net/changes . We find that nonthermal spectral indices flatten in star-forming regions and also that radio power increases with star formation rate.

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Cite

BibTeXRIS
BibTeX
@article{walterbos2026changes,
  title = {{CHANG-ES XLI: Data Release 5—VLA C-configuration Images}},
  author = {René Walterbos and Theresa Wiegert and Michael Stein and Judith Irwin and Tanden Cook and Ancor Damas-Segovia and Jayanne English and Volker Heesen and Jiangtao Li and Scott Macdonald and Arpad Miskolczi and Michael Radica and Nathan Skeggs and Carlos Vargas and Q. Daniel Wang and Marek Weżgowiec and Jianghui Xu and Yang Yang and The CHANG-ES consortium},
  journal = {The Astronomical Journal},
  year = {2026},
  month = oct,
  doi = {10.3847/1538-3881/aea69b},
  url = {https://iopscience.iop.org/article/10.3847/1538-3881/aea69b},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - CHANG-ES XLI: Data Release 5—VLA C-configuration Images
AU  - René Walterbos
AU  - Theresa Wiegert
AU  - Michael Stein
AU  - Judith Irwin
AU  - Tanden Cook
AU  - Ancor Damas-Segovia
AU  - Jayanne English
AU  - Volker Heesen
AU  - Jiangtao Li
AU  - Scott Macdonald
AU  - Arpad Miskolczi
AU  - Michael Radica
AU  - Nathan Skeggs
AU  - Carlos Vargas
AU  - Q. Daniel Wang
AU  - Marek Weżgowiec
AU  - Jianghui Xu
AU  - Yang Yang
AU  - The CHANG-ES consortium
PY  - 2026
DA  - 2026/10/15
JO  - The Astronomical Journal
DO  - 10.3847/1538-3881/aea69b
UR  - https://iopscience.iop.org/article/10.3847/1538-3881/aea69b
AB  - We present Data Release 5 (DR5) of the Continuum Halos in Nearby Galaxies—an EVLA Survey (CHANG-ES), including select data products. These data were observed with the Karl G. Jansky Very Large Array (VLA) in C configuration, in the L band (1.575 GHz) and C band (6.0 GHz) for all 35 edge-on galaxies in the CHANG-ES sample. We combine the new C-configuration L-band images with our previously released D-configuration C-band data, together with H α and Wide-field Infrared Survey Explorer 22 μ m infrared maps, to separate the thermal and nonthermal radio continuum emission across all 34 galaxies for which H α data are available. This yields spatially resolved maps of the thermal fraction, total and nonthermal band-to-band spectral index, and star formation rate at 15″ resolution. Together with total intensity images at two weightings, these data products are included in an atlas presented here and made publicly available at https://projects.canfar.net/changes . We find that nonthermal spectral indices flatten in star-forming regions and also that radio power increases with star formation rate.
SN  - 0004-6256
SN  - 1538-3881
ER  -