The second serendipitous discovery of a z>4 quasar

Donald P. Schneider; Maarten Schmidt; James E. Gunn

doi:10.1086/116901

The second serendipitous discovery of a z>4 quasar

Donald P. Schneider, Maarten Schmidt, James E. Gunn

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Abstract

This paper describes the chance discovery of the z=4.210 quasar PC 0027+0521. The quasar was found during a grism survey for emission line objects. The Lyman α line luminosity and the redshift of the quasar satisfy the survey selection criteria, but the grism spectrum of the quasar was heavily contaminated by the spectra of three nearby objects. The quasar was discovered only because it happened to lie in the slit of a spectroscopic observation of a nearby emission line candidate. The quasar is the faintest z>4 object yet found, and has strong, narrow emission lines.

Original language	English (US)
Pages (from-to)	880-883
Number of pages	4
Journal	Astronomical Journal
Volume	107
Issue number	3
DOIs	https://doi.org/10.1086/116901
State	Published - Mar 1994

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/116901

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abstract = "This paper describes the chance discovery of the z=4.210 quasar PC 0027+0521. The quasar was found during a grism survey for emission line objects. The Lyman α line luminosity and the redshift of the quasar satisfy the survey selection criteria, but the grism spectrum of the quasar was heavily contaminated by the spectra of three nearby objects. The quasar was discovered only because it happened to lie in the slit of a spectroscopic observation of a nearby emission line candidate. The quasar is the faintest z>4 object yet found, and has strong, narrow emission lines.",

author = "Schneider, {Donald P.} and Maarten Schmidt and Gunn, {James E.}",

year = "1994",

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AU - Schmidt, Maarten

AU - Gunn, James E.

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N2 - This paper describes the chance discovery of the z=4.210 quasar PC 0027+0521. The quasar was found during a grism survey for emission line objects. The Lyman α line luminosity and the redshift of the quasar satisfy the survey selection criteria, but the grism spectrum of the quasar was heavily contaminated by the spectra of three nearby objects. The quasar was discovered only because it happened to lie in the slit of a spectroscopic observation of a nearby emission line candidate. The quasar is the faintest z>4 object yet found, and has strong, narrow emission lines.

AB - This paper describes the chance discovery of the z=4.210 quasar PC 0027+0521. The quasar was found during a grism survey for emission line objects. The Lyman α line luminosity and the redshift of the quasar satisfy the survey selection criteria, but the grism spectrum of the quasar was heavily contaminated by the spectra of three nearby objects. The quasar was discovered only because it happened to lie in the slit of a spectroscopic observation of a nearby emission line candidate. The quasar is the faintest z>4 object yet found, and has strong, narrow emission lines.

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The second serendipitous discovery of a z>4 quasar

Abstract

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