Abstract
The Cloverleaf (H1413+117) is a quasar at redshift 2.56 which derives its name from its optical image, which is gravitationally lensed into a pattern of four points with separations of about 1″. The lensing galaxy is unseen, but models assuming an elliptical potential at intermediate redshift give total magnifications of roughly a factor of 10 (Kayser et al. 1990). The Cloverleaf’s optical spectrum has classical broad emission lines, plus broad absorption troughs — it is classified as a BALQ (broad absorption line quasar).
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© 1996 Kluwer Academic Publishers
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Barvainis, R. (1996). CO, CI, and (Possibly) HCN in the Cloverleaf Quasar. In: Bremer, M.N., van der Werf, P.P., Röttgering, H.J.A., Carilli, C.L. (eds) Cold Gas at High Redshift. Astrophysics and Space Science Library, vol 206. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1726-2_34
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DOI: https://doi.org/10.1007/978-94-009-1726-2_34
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7273-1
Online ISBN: 978-94-009-1726-2
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