| Issue |
A&A
Volume 652, August 2021
|
|
|---|---|---|
| Article Number | A6 | |
| Number of page(s) | 9 | |
| Section | Catalogs and data | |
| DOI | https://doi.org/10.1051/0004-6361/202141003 | |
| Published online | 30 July 2021 | |
Twelve-year update of the MST catalogue of γ-ray source candidates above 10 GeV and at Galactic latitudes higher than 20°⋆
1
INAF/OAS, Via Piero Gobetti 101, 40129 Bologna, Italy
e-mail: riccardo.campana@inaf.it
2
INAF/IAPS, Via Fosso del Cavaliere 100, 00133 Roma, Italy
Received:
6
April
2021
Accepted:
11
May
2021
We present an updated version catalogue of γ-ray source candidates, 12Y-MST, selected using the minimum spanning tree (MST) algorithm on the 12-year Fermi-LAT sky (Pass 8) at energies higher than 10 GeV. The high-energy sky at absolute Galactic latitudes above 20° has been investigated using rather restrictive selection criteria, resulting in a total sample of 1664 photon clusters, or candidate sources. Of these, 230 are new detections, that is, candidate sources without any association in other γ-ray catalogues. A large fraction of them have interesting counterparts, most likely blazars. We describe the main results on the catalogue selection and search of counterparts. We also present an additional sample of 224 candidate sources (12Y-MSTw), which are clusters that we extracted by applying weaker selection criteria: about 57% of them have not been reported in other catalogues.
Key words: gamma rays: general / gamma rays: galaxies / methods: data analysis
The catalogue is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/652/A6
© ESO 2021
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