When two become one: an apparent QSO pair turns out to be a single quasar
Guido Cupani, Stefano Cristiani, Valentina D'Odorico, Bo, Milvang-Jensen, and Jens-Kristian Krogager
TL;DR
This study reveals that two objects previously identified as separate quasars are actually a single quasar and a star, correcting a prior catalog misidentification and refining the quasar's redshift measurement.
Contribution
The paper uncovers a misclassification in a quasar catalog, demonstrating that what appeared as a quasar pair is a quasar-star system, and provides a corrected redshift for the quasar.
Findings
The object Q 0132-4037 is a star, not a quasar.
The quasar's redshift has been accurately measured.
The misidentification in the catalog has been clarified.
Abstract
We report on our serendipitous discovery that the objects Q 01323-4037 and Q 0132-4037, listed in the V\'eron-Cetty & V\'eron catalog (2006) as two different quasars, are actually a quasar and a star. We briefly discuss the origin of the misidentification, and provide a refined measurement of the quasar redshift.
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