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The amplitude of variability of SXP1 is measured to be $\\Delta V \\approx 0.15$. From multiple-frequency analysis based on the Fourier decomposition method, we detect two very closely separated pulsating frequencies: the primary frequency at $f_1=24.630$ c/d for both $B$- and $V"},"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":"astro-ph/0102351","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-02-21T02:08:38Z","cross_cats_sorted":[],"title_canon_sha256":"fdc7429893c220ab4df561a9b7c4196271a0323eca60606792b9fd5049033a9e","abstract_canon_sha256":"4bc4ef5c12970252e243a1ee0bd611f90aeb6755371095ba6e109b2ece2d00e5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:22:45.670839Z","signature_b64":"ltO0w1tjHpmvV4AgQYOpEkVqzPtVBwIUPxYGptXpRg3gZD37s35ornPLpDGCChWzbRGzIzVGx300sATNn+boBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cc92b14a48aefc1d084fba141ebb57c5a7e510d69e386ccccd9f6f36e41c57d","last_reissued_at":"2026-07-04T16:22:45.670414Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:22:45.670414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A New SX Phe Star in the Globular Cluster M15","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ho Lee, Myung Gyoon Lee, Seung-Lee Kim, Young-Beom Jeon","submitted_at":"2001-02-21T02:08:38Z","abstract_excerpt":"A new SX Phe star (labelled SXP1) found from $BV$ CCD photometry is the first to be discovered in the globular cluster M15. 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