{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:DTM7Y6PMYDQW3KB2SQZ5JZNJ42","short_pith_number":"pith:DTM7Y6PM","canonical_record":{"source":{"id":"1708.02850","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-09T14:02:47Z","cross_cats_sorted":[],"title_canon_sha256":"1fe63b8cab3db8156817cb701febf4ef51378dc81ad3d32b492aae62ef9f0166","abstract_canon_sha256":"d11caac839cc11293803afc092bcdc45c7d77129add74af0d7ab9feeda4f5e83"},"schema_version":"1.0"},"canonical_sha256":"1cd9fc79ecc0e16da83a9433d4e5a9e69fdb2e27572b5599763837570e4f7879","source":{"kind":"arxiv","id":"1708.02850","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.02850","created_at":"2026-05-18T00:37:18Z"},{"alias_kind":"arxiv_version","alias_value":"1708.02850v1","created_at":"2026-05-18T00:37:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.02850","created_at":"2026-05-18T00:37:18Z"},{"alias_kind":"pith_short_12","alias_value":"DTM7Y6PMYDQW","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DTM7Y6PMYDQW3KB2","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DTM7Y6PM","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:DTM7Y6PMYDQW3KB2SQZ5JZNJ42","target":"record","payload":{"canonical_record":{"source":{"id":"1708.02850","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-09T14:02:47Z","cross_cats_sorted":[],"title_canon_sha256":"1fe63b8cab3db8156817cb701febf4ef51378dc81ad3d32b492aae62ef9f0166","abstract_canon_sha256":"d11caac839cc11293803afc092bcdc45c7d77129add74af0d7ab9feeda4f5e83"},"schema_version":"1.0"},"canonical_sha256":"1cd9fc79ecc0e16da83a9433d4e5a9e69fdb2e27572b5599763837570e4f7879","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:18.011854Z","signature_b64":"XTKs9YZUL8QlscQG2jc+66ohItI6RHCV8xUqEe2M0i5SnwvhVT1H80vVpaAXrFkRQHkXbh7bBKRtJZPviX1uDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1cd9fc79ecc0e16da83a9433d4e5a9e69fdb2e27572b5599763837570e4f7879","last_reissued_at":"2026-05-18T00:37:18.011152Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:18.011152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.02850","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:37:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eqJbsIzwIwlcckAW7zpYK4YvUSqk3qzkHAMFgrZIu3GnqAjLUx6diZhK2NSTwbpODnvJogG6PBYlvkoCEYKRBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T06:58:34.745970Z"},"content_sha256":"e9d9e392bee196a10410f48f6e911aca429d32339250e41865d9b0120b8d773b","schema_version":"1.0","event_id":"sha256:e9d9e392bee196a10410f48f6e911aca429d32339250e41865d9b0120b8d773b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:DTM7Y6PMYDQW3KB2SQZ5JZNJ42","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Pan-STARRS1 Medium-deep Survey: Star Formation Quenching in Group and Cluster Environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Chin-Wei Chen, C. Waters, E. A. Magnier, H. Flewelling, Hung-Yu Jian, Kai-Yang Lin, Lihwai Lin, M. E. Huber, N. Kaiser, N. Metcalfe, P. W. Draper, R. G. Bower, R. J. Wainscoat, R.-P. Kudritzki, Sebastien Foucaud, Shaun Cole, Tzihong Chiueh, Wen-Ping Chen, W. S. Burgett","submitted_at":"2017-08-09T14:02:47Z","abstract_excerpt":"We make use of a catalog of 1600 Pan-STARRS1 groups produced by the probability friends-of-friends algorithm to explore how the galaxy properties, i.e. the specific star formation rate (SSFR) and quiescent fraction, depend on stellar mass and group-centric radius. The work is the extension of Lin et al. (2014). In this work, powered by a stacking technique plus a background subtraction for contamination removal, a finer correction and more precise results are obtained than in our previous work. We find that while the quiescent fraction increases with decreasing group-centric radius the median "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.02850","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:37:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HUfPV0gR9QfJsTeKHDrd9V7IJljOzlZI1CmWL/rxJ2es5Qq6CHVk+PqQFaM4g2/TTSAfPxBgaxphv2je0O9kDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T06:58:34.746332Z"},"content_sha256":"17b140a1629d75e465bf227c03d727fc07c460185e6e752abf689aa4ec430459","schema_version":"1.0","event_id":"sha256:17b140a1629d75e465bf227c03d727fc07c460185e6e752abf689aa4ec430459"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42/bundle.json","state_url":"https://pith.science/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T06:58:34Z","links":{"resolver":"https://pith.science/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42","bundle":"https://pith.science/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42/bundle.json","state":"https://pith.science/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DTM7Y6PMYDQW3KB2SQZ5JZNJ42/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DTM7Y6PMYDQW3KB2SQZ5JZNJ42","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"d11caac839cc11293803afc092bcdc45c7d77129add74af0d7ab9feeda4f5e83","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-09T14:02:47Z","title_canon_sha256":"1fe63b8cab3db8156817cb701febf4ef51378dc81ad3d32b492aae62ef9f0166"},"schema_version":"1.0","source":{"id":"1708.02850","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.02850","created_at":"2026-05-18T00:37:18Z"},{"alias_kind":"arxiv_version","alias_value":"1708.02850v1","created_at":"2026-05-18T00:37:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.02850","created_at":"2026-05-18T00:37:18Z"},{"alias_kind":"pith_short_12","alias_value":"DTM7Y6PMYDQW","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DTM7Y6PMYDQW3KB2","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DTM7Y6PM","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:17b140a1629d75e465bf227c03d727fc07c460185e6e752abf689aa4ec430459","target":"graph","created_at":"2026-05-18T00:37:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We make use of a catalog of 1600 Pan-STARRS1 groups produced by the probability friends-of-friends algorithm to explore how the galaxy properties, i.e. the specific star formation rate (SSFR) and quiescent fraction, depend on stellar mass and group-centric radius. The work is the extension of Lin et al. (2014). In this work, powered by a stacking technique plus a background subtraction for contamination removal, a finer correction and more precise results are obtained than in our previous work. We find that while the quiescent fraction increases with decreasing group-centric radius the median ","authors_text":"Chin-Wei Chen, C. Waters, E. A. Magnier, H. Flewelling, Hung-Yu Jian, Kai-Yang Lin, Lihwai Lin, M. E. Huber, N. Kaiser, N. Metcalfe, P. W. Draper, R. G. Bower, R. J. Wainscoat, R.-P. Kudritzki, Sebastien Foucaud, Shaun Cole, Tzihong Chiueh, Wen-Ping Chen, W. S. Burgett","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-09T14:02:47Z","title":"The Pan-STARRS1 Medium-deep Survey: Star Formation Quenching in Group and Cluster Environments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.02850","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e9d9e392bee196a10410f48f6e911aca429d32339250e41865d9b0120b8d773b","target":"record","created_at":"2026-05-18T00:37:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"d11caac839cc11293803afc092bcdc45c7d77129add74af0d7ab9feeda4f5e83","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-09T14:02:47Z","title_canon_sha256":"1fe63b8cab3db8156817cb701febf4ef51378dc81ad3d32b492aae62ef9f0166"},"schema_version":"1.0","source":{"id":"1708.02850","kind":"arxiv","version":1}},"canonical_sha256":"1cd9fc79ecc0e16da83a9433d4e5a9e69fdb2e27572b5599763837570e4f7879","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1cd9fc79ecc0e16da83a9433d4e5a9e69fdb2e27572b5599763837570e4f7879","first_computed_at":"2026-05-18T00:37:18.011152Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:37:18.011152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XTKs9YZUL8QlscQG2jc+66ohItI6RHCV8xUqEe2M0i5SnwvhVT1H80vVpaAXrFkRQHkXbh7bBKRtJZPviX1uDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:37:18.011854Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.02850","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9d9e392bee196a10410f48f6e911aca429d32339250e41865d9b0120b8d773b","sha256:17b140a1629d75e465bf227c03d727fc07c460185e6e752abf689aa4ec430459"],"state_sha256":"400e38a5b75934819ff8f17ecb5c58c901ac4ead0d76ce0eb4f1b91ee6846ce0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Ln6TRe6lmeHPd/6iSrTDqxIwYudJF33F5glVxjJfNy3Mz6+7TXBh/oJLy1KKRUPLFrkvah7kO/2NI1MMRNiBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T06:58:34.748213Z","bundle_sha256":"91b55a70c2c3b5b2bfc4f8f2e1bc9b88a62b6f04ac342921c5cb20b71fe50d7f"}}