TY - JOUR
T1 - The SARAO MeerKAT Galactic Plane Survey extended source catalogue
AU - Bordiu, C.
AU - Riggi, S.
AU - Bufano, F.
AU - Cavallaro, F.
AU - Cecconello, T.
AU - Camilo, F.
AU - Umana, G.
AU - Cotton, W. D.
AU - Thompson, M. A.
AU - Bietenholz, M.
AU - Goedhart, S.
AU - Anderson, L. D.
AU - Buemi, C. S.
AU - Chibueze, J. O.
AU - Ingallinera, A.
AU - Leto, P.
AU - Loru, S.
AU - Mutale, M.
AU - Rigby, A.
AU - Trigilio, C.
AU - Williams, G. M.
PY - 2025/3/18
Y1 - 2025/3/18
N2 - We present a catalogue of extended radio sources from the SARAO MeerKAT Galactic Plane Survey (SMGPS). Compiled from 56 survey tiles and covering approximately 500 deg(2) across the first, third, and fourth Galactic quadrants, the catalogue includes 16 534 extended and diffuse sources with areas larger than 5 synthesised beams. Of them, 3891 (24 are confidently associated with known Galactic radio-emitting objects in the literature, such as HII regions, supernova remnants, planetary nebulae, luminous blue variables, and Wolf-Rayet stars. A significant fraction of the remaining sources, 5462 (33, are candidate extragalactic sources, while 7181 (43 remain unclassified. Isolated radio filaments are excluded from the catalogue. The diversity of extended sources underscores MeerKAT's contribution to the completeness of censuses of Galactic radio emitters, and its potential for new scientific discoveries. For the catalogued sources, we derived basic positional and morphological parameters, as well as flux density estimates, using standard aperture photometry. This paper describes the methods followed to generate the catalogue from the original SMGPS tiles, detailing the source extraction, characterisation, and crossmatching procedures. Additionally, we analyse the statistical properties of the catalogued populations.
AB - We present a catalogue of extended radio sources from the SARAO MeerKAT Galactic Plane Survey (SMGPS). Compiled from 56 survey tiles and covering approximately 500 deg(2) across the first, third, and fourth Galactic quadrants, the catalogue includes 16 534 extended and diffuse sources with areas larger than 5 synthesised beams. Of them, 3891 (24 are confidently associated with known Galactic radio-emitting objects in the literature, such as HII regions, supernova remnants, planetary nebulae, luminous blue variables, and Wolf-Rayet stars. A significant fraction of the remaining sources, 5462 (33, are candidate extragalactic sources, while 7181 (43 remain unclassified. Isolated radio filaments are excluded from the catalogue. The diversity of extended sources underscores MeerKAT's contribution to the completeness of censuses of Galactic radio emitters, and its potential for new scientific discoveries. For the catalogued sources, we derived basic positional and morphological parameters, as well as flux density estimates, using standard aperture photometry. This paper describes the methods followed to generate the catalogue from the original SMGPS tiles, detailing the source extraction, characterisation, and crossmatching procedures. Additionally, we analyse the statistical properties of the catalogued populations.
KW - catalogs
KW - surveys
KW - HII regions
KW - ISM: supernova remnants
KW - Galaxy: general
KW - radio continuum: general
U2 - 10.1051/0004-6361/202450356
DO - 10.1051/0004-6361/202450356
M3 - Article
SN - 0004-6361
VL - 695
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A144
ER -