Open Access

Fig. 10.

image

Pan-STARRS lens candidate with prominent Balmer absorption features from a background galaxy at zs = 1.185 blended with the BOSS spectrum of the lens LRG at zd = 0.3155. The black and gray lines show the spectrum observed with a fiber of 2″ diameter and the 1σ noise level, respectively, and the blue line corresponds to the best-fit LRG template from the automated SDSS pipeline at λ <  8000 Å (see inset), which poorly fits the continuum and Balmer lines at longer wavelengths. The red line shows that combining the SED templates of an LRG at zd = 0.3155 (brown curve) and a recently quenched galaxy at zs = 1.185 (orange curve) correctly fits the spectrum over the entire range (see details in text).

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