{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:RIOMAN33O6GPTXJPDRUONFULPH","short_pith_number":"pith:RIOMAN33","canonical_record":{"source":{"id":"2108.11907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-26T17:00:20Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"a58c1940ef62f7dd1dc8d0d371b58e8486f1907cb3a659534f76cfcd778908a9","abstract_canon_sha256":"2b07469c7a418b52569edc8766676587c655bb473bfcbd41a559c13760fc6a84"},"schema_version":"1.0"},"canonical_sha256":"8a1cc0377b778cf9dd2f1c68e6968b79ef29c76a4420c6fc52abb380552363b5","source":{"kind":"arxiv","id":"2108.11907","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.11907","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"arxiv_version","alias_value":"2108.11907v1","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.11907","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"pith_short_12","alias_value":"RIOMAN33O6GP","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"pith_short_16","alias_value":"RIOMAN33O6GPTXJP","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"pith_short_8","alias_value":"RIOMAN33","created_at":"2026-07-05T04:15:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:RIOMAN33O6GPTXJPDRUONFULPH","target":"record","payload":{"canonical_record":{"source":{"id":"2108.11907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-26T17:00:20Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"a58c1940ef62f7dd1dc8d0d371b58e8486f1907cb3a659534f76cfcd778908a9","abstract_canon_sha256":"2b07469c7a418b52569edc8766676587c655bb473bfcbd41a559c13760fc6a84"},"schema_version":"1.0"},"canonical_sha256":"8a1cc0377b778cf9dd2f1c68e6968b79ef29c76a4420c6fc52abb380552363b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:15:45.198403Z","signature_b64":"AlJz8lJC+Un1aoeNgp1W+TbWcxmodt9LdPV3mEWQHs1/SFNRnYz/3B8KTS3Ne5fkgCtaFHSfICtnWeuLUyIAAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8a1cc0377b778cf9dd2f1c68e6968b79ef29c76a4420c6fc52abb380552363b5","last_reissued_at":"2026-07-05T04:15:45.197834Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:15:45.197834Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.11907","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":"2026-07-05T04:15:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F3tlx5n6LnBbIrZ56JObDclKq25yEAx9DxCQY8hQ6NE1nq0lBwTMD6snGdqICNSU2I5pEq92SCAdvb5yTjFFBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T13:49:16.015053Z"},"content_sha256":"8de38baaa4dc708562e8da330f06c341e0ade40000e73048e2b3058246e1b694","schema_version":"1.0","event_id":"sha256:8de38baaa4dc708562e8da330f06c341e0ade40000e73048e2b3058246e1b694"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:RIOMAN33O6GPTXJPDRUONFULPH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Final Targeting Strategy for the SDSS-IV APOGEE-2N Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Adam J. Burgasser, Adrian. M. Price-Whelan, Alexandre Roman-Lopes, Alvaro Rojas-Arriagada, Amelia M. Stutz, Andrew Tkachenko, Arturo Manchado, Borja Anguiano, Caleb I. Canas, Carlos Roman-Zuniga, Chad Bender, Christian R. Hayes, Conny Aerts, Diane Feuillet, Dmitry Bizyaev, Doug Geisler, Edward F. Schlafly, Felipe A. Santana, Francisco Prada, Franco D. Albareti, Gail Zasowski, Gregory V. A. Simonian, Guy S. Stringfellow, Jamie Tayar, Jennifer A. Johnson, Jennifer S. Sobeck, Jo Bovy, Johan Comparat, Johanna Teske, John Donor Scott W. Fleming, Jon Holtzman, Jose Fernandez-Trincado, Joshua D. Simon, Juan Jose Downes, Julia E. O'Connell, Juna A. Kollmeier, Katia Cunha, Keivan G. Stassun, Kevin R. Covey, Laura Inno, Marc H. Pinsonneault, Marina Kounkel, Mathias Schultheis, Matthew Shetrone, Melissa K. Ness, Nathan De Lee, Nick Troup, Olga Zamora, Paul Harding, Penelope Longa-Pena, Peter M. Frinchaboy, Rachael L. Beaton, Renbin Yan, Roger Cohen, Ryan J. Oelkers, S. D. Chojnowski, Sten Hasselquist, Steven R. Majewski, Suvrath Mahadevan, Verne V. Smith","submitted_at":"2021-08-26T17:00:20Z","abstract_excerpt":"APOGEE-2 is a dual-hemisphere, near-infrared (NIR), spectroscopic survey with the goal of producing a chemo-dynamical mapping of the Milky Way Galaxy. The targeting for APOGEE-2 is complex and has evolved with time. In this paper, we present the updates and additions to the initial targeting strategy for APOGEE-2N presented in Zasowski et al. (2017). These modifications come in two implementation modes: (i) \"Ancillary Science Programs\" competitively awarded to SDSS-IV PIs through proposal calls in 2015 and 2017 for the pursuit of new scientific avenues outside the main survey, and (ii) an effe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.11907","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2108.11907/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:15:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V1kILJPaxKkO+lLtEO2XvLIRX1Ywj9+AVYvCvdtWTb4bXWZpEVNVPZTAyC/oyeTfCSDdBBE8uwDo9QQFUGlrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T13:49:16.015413Z"},"content_sha256":"de4095f4fffc3abb679a91731b1c8fb2a2bd041fac18d4b9007992a922559a24","schema_version":"1.0","event_id":"sha256:de4095f4fffc3abb679a91731b1c8fb2a2bd041fac18d4b9007992a922559a24"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RIOMAN33O6GPTXJPDRUONFULPH/bundle.json","state_url":"https://pith.science/pith/RIOMAN33O6GPTXJPDRUONFULPH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RIOMAN33O6GPTXJPDRUONFULPH/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":"2026-07-31T13:49:16Z","links":{"resolver":"https://pith.science/pith/RIOMAN33O6GPTXJPDRUONFULPH","bundle":"https://pith.science/pith/RIOMAN33O6GPTXJPDRUONFULPH/bundle.json","state":"https://pith.science/pith/RIOMAN33O6GPTXJPDRUONFULPH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RIOMAN33O6GPTXJPDRUONFULPH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:RIOMAN33O6GPTXJPDRUONFULPH","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":"2b07469c7a418b52569edc8766676587c655bb473bfcbd41a559c13760fc6a84","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-26T17:00:20Z","title_canon_sha256":"a58c1940ef62f7dd1dc8d0d371b58e8486f1907cb3a659534f76cfcd778908a9"},"schema_version":"1.0","source":{"id":"2108.11907","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.11907","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"arxiv_version","alias_value":"2108.11907v1","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.11907","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"pith_short_12","alias_value":"RIOMAN33O6GP","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"pith_short_16","alias_value":"RIOMAN33O6GPTXJP","created_at":"2026-07-05T04:15:45Z"},{"alias_kind":"pith_short_8","alias_value":"RIOMAN33","created_at":"2026-07-05T04:15:45Z"}],"graph_snapshots":[{"event_id":"sha256:de4095f4fffc3abb679a91731b1c8fb2a2bd041fac18d4b9007992a922559a24","target":"graph","created_at":"2026-07-05T04:15:45Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2108.11907/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"APOGEE-2 is a dual-hemisphere, near-infrared (NIR), spectroscopic survey with the goal of producing a chemo-dynamical mapping of the Milky Way Galaxy. The targeting for APOGEE-2 is complex and has evolved with time. In this paper, we present the updates and additions to the initial targeting strategy for APOGEE-2N presented in Zasowski et al. (2017). These modifications come in two implementation modes: (i) \"Ancillary Science Programs\" competitively awarded to SDSS-IV PIs through proposal calls in 2015 and 2017 for the pursuit of new scientific avenues outside the main survey, and (ii) an effe","authors_text":"Adam J. Burgasser, Adrian. M. Price-Whelan, Alexandre Roman-Lopes, Alvaro Rojas-Arriagada, Amelia M. Stutz, Andrew Tkachenko, Arturo Manchado, Borja Anguiano, Caleb I. Canas, Carlos Roman-Zuniga, Chad Bender, Christian R. Hayes, Conny Aerts, Diane Feuillet, Dmitry Bizyaev, Doug Geisler, Edward F. Schlafly, Felipe A. Santana, Francisco Prada, Franco D. Albareti, Gail Zasowski, Gregory V. A. Simonian, Guy S. Stringfellow, Jamie Tayar, Jennifer A. Johnson, Jennifer S. Sobeck, Jo Bovy, Johan Comparat, Johanna Teske, John Donor Scott W. Fleming, Jon Holtzman, Jose Fernandez-Trincado, Joshua D. Simon, Juan Jose Downes, Julia E. O'Connell, Juna A. Kollmeier, Katia Cunha, Keivan G. Stassun, Kevin R. Covey, Laura Inno, Marc H. Pinsonneault, Marina Kounkel, Mathias Schultheis, Matthew Shetrone, Melissa K. Ness, Nathan De Lee, Nick Troup, Olga Zamora, Paul Harding, Penelope Longa-Pena, Peter M. Frinchaboy, Rachael L. Beaton, Renbin Yan, Roger Cohen, Ryan J. Oelkers, S. D. Chojnowski, Sten Hasselquist, Steven R. Majewski, Suvrath Mahadevan, Verne V. Smith","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-26T17:00:20Z","title":"Final Targeting Strategy for the SDSS-IV APOGEE-2N Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.11907","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":"sha256:8de38baaa4dc708562e8da330f06c341e0ade40000e73048e2b3058246e1b694","target":"record","created_at":"2026-07-05T04:15:45Z","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":"2b07469c7a418b52569edc8766676587c655bb473bfcbd41a559c13760fc6a84","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-26T17:00:20Z","title_canon_sha256":"a58c1940ef62f7dd1dc8d0d371b58e8486f1907cb3a659534f76cfcd778908a9"},"schema_version":"1.0","source":{"id":"2108.11907","kind":"arxiv","version":1}},"canonical_sha256":"8a1cc0377b778cf9dd2f1c68e6968b79ef29c76a4420c6fc52abb380552363b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8a1cc0377b778cf9dd2f1c68e6968b79ef29c76a4420c6fc52abb380552363b5","first_computed_at":"2026-07-05T04:15:45.197834Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:15:45.197834Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AlJz8lJC+Un1aoeNgp1W+TbWcxmodt9LdPV3mEWQHs1/SFNRnYz/3B8KTS3Ne5fkgCtaFHSfICtnWeuLUyIAAg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:15:45.198403Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.11907","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8de38baaa4dc708562e8da330f06c341e0ade40000e73048e2b3058246e1b694","sha256:de4095f4fffc3abb679a91731b1c8fb2a2bd041fac18d4b9007992a922559a24"],"state_sha256":"cf29ed73ef248ec2933c8cc60d72f4164dbef72e48df26472fe0cc10d79e5751"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U15qRuBt5UtZta/S7UNEjspZ+NFeUOcY1TZ9KpuQ/5awfghyznYHOO7Ut5VpcU5JxRSs6yCb0OJQ1PuwDCyABA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T13:49:16.017920Z","bundle_sha256":"454b1e066efefbec301e625b52b78a6d8a876e20ffbe2ec3da573e1856802cf9"}}