M. AckermannM. AjelloL. BaldiniJ. BalletG. BarbielliniD. BastieriR. BellazziniE. BissaldiE. D. BloomR. BoninoE. BottaciniT. J. BrandtJ. BregeonP. BruelR. BuehlerR. A. CameronM. CaragiuloP. A. CaraveoD. CastroE. CavazzutiC. CecchiE. CharlesA. ChekhtmanC. C. CheungG. ChiaroS. CipriniJ. M. CohenD. CostantinF. CostanzaS. CutiniF. D'AmmandoF. De PalmaR. DesianteS. W. DigelN. Di LallaM. Di MauroL. Di VenereC. FavuzziS. J. FeganE. C. FerraraA. FranckowiakY. FukazawaS. FunkP. FuscoF. GarganoD. GasparriniN. GigliettoF. GiordanoM. GirolettiD. GreenI. A. GrenierM. H. GrondinL. GuillemotS. GuiriecA. K. HardingE. HaysJ. W. HewittD. HoranX. HouG. JóhannessonT. KamaeM. KussG. La MuraS. LarssonM. Lemoine-GoumardJ. LiF. LongoF. LoparcoP. LubranoJ. D. MagillS. MalderaD. MalyshevA. ManfredaM. N. MazziottaP. F. MichelsonDeutsche Elektronen-SynchrotronClemson UniversityUniversità di PisaUniversite Paris 7- Denis DiderotIstituto Nazionale di Fisica Nucleare, RomaUniversità degli Studi di TriesteIstituto Nazionale Di Fisica Nucleare, Sezione di PadovaUniversità degli Studi di PadovaIstituto Nazionale Di Fisica Nucleare, Sezione di PisaKavli Institute for Particle Astrophysics and CosmologyUniversità degli Studi di TorinoNASA Goddard Space Flight CenterLaboratoire Univers et Particules de MontpellierLaboratoire Leprince-RinguetUniversità degli Studi di BariINAF Istituto di Astrofisica Spaziale e Fisica Cosmica, MilanAgenzia Spaziale ItalianaUniversità degli Studi di PerugiaGeorge Mason University, Fairfax CampusNaval Research LaboratoryUniversity of MarylandIstituto Di Radioastronomia, BolognaAlma Mater Studiorum Università di BolognaUniversità degli Studi di Napoli Federico IIUniversità degli Studi di UdineHiroshima UniversityErlangen Centre for Astroparticle PhysicsIN2P3 Institut National de Physique Nucleaire et de Physique des ParticulesUniversite d'OrleansInstitut National des Sciences de l'UniversUniversity of North FloridaChinese Academy of SciencesUniversity Science Institute ReykjavikNordisk Institut for Teoretisk AtomtysikUniversity of TokyoThe Royal Institute of Technology (KTH)Oskar Klein Centre for Cosmoparticle PhysicsUniversitat Autònoma de BarcelonaMahidol UniversityUniversity of DenverMax Planck Institut für Physik (Werner-Heisenberg-Institut)Osservatorio Astronomico di TriesteUniversity of Johannesburg2018-12-212019-03-142018-12-212019-03-142017-07-10Astrophysical Journal. Vol.843, No.2 (2017)153843570004637X2-s2.0-85025111888https://repository.li.mahidol.ac.th/handle/123456789/42491© 2017. The American Astronomical Society. All rights reserved.. The spatial extension of a γ-ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve γ-ray sources is greatly improved by the newly delivered Fermi-Large Area Telescope (LAT) Pass 8 event-level analysis, which provides a greater acceptance and an improved point-spread function, two crucial factors for the detection of extended sources. Here, we present a complete search for extended sources located within 7° from the Galactic plane, using 6 yr of Fermi-LAT data above 10 GeV. We find 46 extended sources and provide their morphological and spectral characteristics. This constitutes the first catalog of hard Fermi-LAT extended sources, named the Fermi Galactic Extended Source Catalog, which allows a thorough study of the properties of the Galactic plane in the sub-TeV domain.Mahidol UniversityEarth and Planetary SciencesArticleSCOPUS10.3847/1538-4357/aa775a