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Little is known about the planetary systems around single white dwarfs although there is strong evidence that they do exist.\n  AIMS. We performed a pilot study with the extreme-AO system on the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) on the Very Large Telescopes (VLT) to look for giant planets around a young white dwarf, GD 50.\n  METHODS. We were awarded science verification time on the new ESO instrument SPHERE. Observations were made with the InfraRed Dual-band Imager and Spectrograph in classical imaging mode in H band.\n  RESULTS. Despite the faintness of the"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1506.03121","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-06-09T22:34:30Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"28e21961b00e4c45b0143635e51cbf55b090bd4b8f46ec2fa214260bbdd92c21","abstract_canon_sha256":"675fa729dd391ae54e285e3ef520d9ad57d2edbeeb2b711575031c55b2f03892"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:13.039191Z","signature_b64":"WWc8SyUZM2sgx/Czkx/jMziwcc6iYtS9h/TXbDTkRJp076VrSQtNFibCVNOzN8kk7s+FD1IgwFW8HDzCRGwyCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6bf9011403303fb7d9b127c469bd4ffe92226a422bbdb94e1acbc72f470b14c","last_reissued_at":"2026-05-18T01:37:13.038401Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:13.038401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An Extreme-AO Search for Giant Planets around a White Dwarf --VLT/SPHERE performance on a faint target GD 50","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"2), (2) Aix Marseille Universite, (3) Kiel University), G. H.-M. Bertrang (3) ((1) ESO, J. Milli (1), P. Scicluna (3), S. Ertel (1), S. Xu (1), Z. Wahhaj (1","submitted_at":"2015-06-09T22:34:30Z","abstract_excerpt":"CONTEXT. Little is known about the planetary systems around single white dwarfs although there is strong evidence that they do exist.\n  AIMS. We performed a pilot study with the extreme-AO system on the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) on the Very Large Telescopes (VLT) to look for giant planets around a young white dwarf, GD 50.\n  METHODS. We were awarded science verification time on the new ESO instrument SPHERE. Observations were made with the InfraRed Dual-band Imager and Spectrograph in classical imaging mode in H band.\n  RESULTS. 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