A gravitational lens candidate behind the Fornax dwarf spheroidal galaxy

Details A gravitational lens candidate behind the Fornax dwarf spheroidal galaxy A gravitational lens candidate behind the Fornax dwarf spheroidal galaxy

Nov 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277..609t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 277, Issue 2, pp. 609-615.

Astronomy and Astrophysics

Astronomy

13

Local Group, Quasars: General, Gravitational Lensing

Scientific paper

We present observations of a candidate gravitational lens system behind the Fornax dwarf spheroidal galaxy, at z=1.406 with a separation of 6.1 arcsec. The rest-frame velocity difference between the two components (from broad emission lines) is consistent with zero. The emission lines have similar strength in both components and show strong similarities. The continuum in component A, however, is ~=50 per cent brighter than in component B, and slightly bluer. The differences between the spectra can be accounted for by time-delay and/or microlensing effects, and the similarities between the spectra argue for a gravitational lens nature to the system.

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