A GMRT 610 MHz radio survey of the North Ecliptic Pole (NEP, ADF-N) / Euclid Deep Field North

ABSTRACT This paper presents a 610 MHz radio survey covering 1.94 deg$^2$ around the North Ecliptic Pole (NEP), which includes parts of the ${\it AKARI}$ (ADF-N) and Euclid, Deep Fields North. The median 5$\sigma$ sensitivity is 28 $\mu$Jy beam$^{-1}$, reaching as low as 19 $\mu$Jy beam$^{-1}$, with a synthesized beam of 3.6 arcsec $\times$ 4.1 arcsec. The catalogue contains 1675 radio components, with 339 grouped into multicomponent sources and 284 ‘isolated’ components likely part of double radio sources. Imaging, cataloguing, and source identification are presented, along with preliminary scientific results. From a non-statistical sub-set of 169 objects with multiwavelength AKARI and other detections, luminous infrared galaxies (LIRGs) represent 66 ${{\ \rm per\ cent}}$ of the sample, ultra-luminous infrared galaxies (ULIRGs) 4 ${{\ \rm per\ cent}}$, and sources with L$_{IR}$ < 10$^{11}$ $\mathrm{ L}_{\odot }\,$ 30${{\ \rm per\ cent}}$. In total, 56 ${{\ \rm per\ cent}}$ of sources show some AGN presence, though only seven are AGN-dominated. ULIRGs require three times higher AGN contribution to produce high-quality SED fits compared to lower luminosity galaxies, and AGN presence increases with AGN fraction. The PAH mass fraction is not significant, although ULIRGs have about half the PAH strength of lower IR-luminosity galaxies. Higher luminosity galaxies show gas and stellar masses an order of magnitude larger, suggesting higher star formation rates. For LIRGs, AGN presence increases with redshift, indicating that part of the total luminosity could be contributed by AGN activity rather than star formation. Simple cross-matching revealed 13 ROSAT QSOs, 45 X-ray sources, and 61 sub-mm galaxies coincident with GMRT radio sources.

Authors

Institutions

Publication Details

Journal
Monthly Notices of the Royal Astronomical Society
Published
2024-08-31
DOI
https://doi.org/10.1093/mnras/stae2058
Primary Topic
Astrophysics and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
0.00

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

A GMRT 610 MHz radio survey of the North Ecliptic Pole (NEP, ADF-N) / Euclid Deep Field North

Chris Sedgwick, Laia Barrufet, D. Burgarella, K. Małek et al.
Monthly Notices of the Royal Astronomical Society
Astrophysics and Cosmic Phenomena
article

A GMRT 610 MHz radio survey of the North Ecliptic Pole (NEP, ADF-N) / Euclid Deep Field North

Chris Sedgwick, Laia Barrufet, D. Burgarella, K. Małek, G. J. White, Toshiyuki Takagi, Dipti Patra, Sabyasachi Pal, Hideo Matsuhara, Nagisa Oi, S. Serjeant, Hyunjin Shim, P Chiu, Takao Nakagawa, T. W. Shimwell, C. P. Pearson, T. Ishigaki, S. K. Sirothia, M. Malkan, Hyun Ki Kim
article en

Abstract

ABSTRACT This paper presents a 610 MHz radio survey covering 1.94 deg$^2$ around the North Ecliptic Pole (NEP), which includes parts of the ${\it AKARI}$ (ADF-N) and Euclid, Deep Fields North. The median 5$\sigma$ sensitivity is 28 $\mu$Jy beam$^{-1}$, reaching as low as 19 $\mu$Jy beam$^{-1}$, with a synthesized beam of 3.6 arcsec $\times$ 4.1 arcsec. The catalogue contains 1675 radio components, with 339 grouped into multicomponent sources and 284 ‘isolated’ components likely part of double radio sources. Imaging, cataloguing, and source identification are presented, along with preliminary scientific results. From a non-statistical sub-set of 169 objects with multiwavelength AKARI and other detections, luminous infrared galaxies (LIRGs) represent 66 ${{\ \rm per\ cent}}$ of the sample, ultra-luminous infrared galaxies (ULIRGs) 4 ${{\ \rm per\ cent}}$, and sources with L$_{IR}$ < 10$^{11}$ $\mathrm{ L}_{\odot }\,$ 30${{\ \rm per\ cent}}$. In total, 56 ${{\ \rm per\ cent}}$ of sources show some AGN presence, though only seven are AGN-dominated. ULIRGs require three times higher AGN contribution to produce high-quality SED fits compared to lower luminosity galaxies, and AGN presence increases with AGN fraction. The PAH mass fraction is not significant, although ULIRGs have about half the PAH strength of lower IR-luminosity galaxies. Higher luminosity galaxies show gas and stellar masses an order of magnitude larger, suggesting higher star formation rates. For LIRGs, AGN presence increases with redshift, indicating that part of the total luminosity could be contributed by AGN activity rather than star formation. Simple cross-matching revealed 13 ROSAT QSOs, 45 X-ray sources, and 61 sub-mm galaxies coincident with GMRT radio sources.

Monthly Notices of the Royal Astronomical SocietyVol. 535(2)
University of Geneva (CH), Leiden University (NL), Rutherford Appleton Laboratory (GB), Tokyo University of Science (JP), University of California, Los Angeles (US), Iwate University (JP), The Graduate University for Advanced Studies, SOKENDAI (JP), Rhodes University (ZA), The Open University (GB), Midnapore Medical College and Hospital (IN), Japan Aerospace Exploration Agency (JP), Kyungpook National University (KR), European Space Astronomy Centre (ES), City College (US), National Centre for Nuclear Research (PL), Laboratoire d’Astrophysique de Marseille (FR), South African Radio Astronomy Observatory (ZA), Château Gombert (FR), Institute of Space and Astronautical Science (JP), Japan Space Forum (JP), Netherlands Institute for Radio Astronomy (NL)
Leverhulme Trust, Tata Institute of Fundamental Research, Department of Science and Technology, Ministry of Science and Technology, India, Japan Society for the Promotion of Science, S. N. Bose National Centre for Basic Sciences
Openalex Percentile: Top 96%
Astrophysics and Cosmic Phenomena
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.