000403344 001__ 403344 000403344 005__ 20250729164516.0 000403344 0247_ $$2doi$$a10.1051/0004-6361/201732098 000403344 0247_ $$2ISSN$$a0004-6361 000403344 0247_ $$2ISSN$$a1432-0746 000403344 0247_ $$2arXiv$$aarXiv:1804.02432 000403344 0247_ $$2altmetric$$aaltmetric:35960997 000403344 0247_ $$2datacite_doi$$a10.3204/PUBDB-2018-02035 000403344 0247_ $$2WOS$$aWOS:000429404700001 000403344 0247_ $$2inspire$$ainspire:1666892 000403344 0247_ $$2openalex$$aopenalex:W805782642 000403344 037__ $$aPUBDB-2018-02035 000403344 041__ $$aEnglish 000403344 082__ $$a520 000403344 0881_ $$aarXiv:1804.02432 000403344 088__ $$2arXiv$$aarXiv:1804.02432 000403344 1001_ $$aAbdalla, H.$$b0 000403344 245__ $$aThe H.E.S.S. Galactic plane survey 000403344 260__ $$aLes Ulis$$bEDP Sciences$$c2018 000403344 3367_ $$2DRIVER$$aarticle 000403344 3367_ $$2DataCite$$aOutput Types/Journal article 000403344 3367_ $$0PUB:(DE-HGF)29$$2PUB:(DE-HGF)$$aReport$$mreport 000403344 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1528136280_22996 000403344 3367_ $$2BibTeX$$aARTICLE 000403344 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000403344 3367_ $$00$$2EndNote$$aJournal Article 000403344 500__ $$a© ESO 000403344 520__ $$aWe present the results of the most comprehensive survey of the Galactic plane in very high-energy (VHE) γ-rays, including a public release of Galactic sky maps, a catalog of VHE sources, and the discovery of 16 new sources of VHE γ-rays. The High Energy Spectroscopic System (H.E.S.S.) Galactic plane survey (HGPS) was a decade-long observation program carried out by the H.E.S.S. I array of Cherenkov telescopes in Namibia from 2004 to 2013. The observations amount to nearly 2700 h of quality-selected data, covering the Galactic plane at longitudes from ℓ = 250° to 65° and latitudes |b|≤ 3°. In addition to the unprecedented spatial coverage, the HGPS also features a relatively high angular resolution (0.08° ≈ 5 arcmin mean point spread function 68% containment radius), sensitivity (≲1.5% Crab flux for point-like sources), and energy range (0.2–100 TeV). We constructed a catalog of VHE γ-ray sources from the HGPS data set with a systematic procedure for both source detection and characterization of morphology and spectrum. We present this likelihood-based method in detail, including the introduction of a model component to account for unresolved, large-scale emission along the Galactic plane. In total, the resulting HGPS catalog contains 78 VHE sources, of which 14 are not reanalyzed here, for example, due to their complex morphology, namely shell-like sources and the Galactic center region. Where possible, we provide a firm identification of the VHE source or plausible associations with sources in other astronomical catalogs. We also studied the characteristics of the VHE sources with source parameter distributions. 16 new sources were previously unknown or unpublished, and we individually discuss their identifications or possible associations. We firmly identified 31 sources as pulsar wind nebulae (PWNe), supernova remnants (SNRs), composite SNRs, or gamma-ray binaries. Among the 47 sources not yet identified, most of them (36) have possible associations with cataloged objects, notably PWNe and energetic pulsars that could power VHE PWNe. 000403344 536__ $$0G:(DE-HGF)POF3-613$$a613 - Matter and Radiation from the Universe (POF3-613)$$cPOF3-613$$fPOF III$$x0 000403344 588__ $$aDataset connected to CrossRef 000403344 693__ $$0EXP:(DE-H253)HESS-20170101$$5EXP:(DE-H253)HESS-20170101$$eHigh Energy Stereoscopic System$$x0 000403344 7001_ $$aAbramowski, A.$$b1 000403344 7001_ $$aAharonian, F.$$b2 000403344 7001_ $$aBenkhali, F. Ait$$b3 000403344 7001_ $$aAngüner, E. O.$$b4 000403344 7001_ $$aArakawa, M.$$b5 000403344 7001_ $$aArrieta, M.$$b6 000403344 7001_ $$aAubert, P.$$b7 000403344 7001_ $$aBackes, M.$$b8 000403344 7001_ $$aBalzer, A.$$b9 000403344 7001_ $$aBarnard, M.$$b10 000403344 7001_ $$aBecherini, Y.$$b11 000403344 7001_ $$aTjus, J. 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