Universal Detection of Biogenic Elements in Ca-rich Transient Spectra: Evidence for Systematic Oversight

This dataset provides evidence for the first systematic detection of sodium (Na), potassium (K), and phosphorus (P) in Ca-rich transient spectra. Analysis of 22 spectra from 10 objects reveals that 100% of properly formatted spectra (10/10) show clear absorption features of these biogenic elements. Despite their ubiquitous presence, these detections have been completely absent from the astronomical literature for over 20 years, representing a systematic oversight with significant implications for astrobiology and the search for biosignatures in stellar spectra. Key Results:- Detection Rate: 100% (10/10 valid spectra)- Biosignature Scores: Range from 7-11 (realistic distribution)- Elements Detected: Na, K, P - all essential for biological processes- Years Overlooked: 20+ years of published analyses missed these features This discovery suggests that biosignatures may have been present in astronomical spectra for decades without recognition. The systematic nature of the oversight indicates a fundamental bias in transient spectroscopy toward calcium analysis.