KiDS ultracompact massive galaxies sp. obs.
- Scognamiglio D.
- Tortora C.
- Spavone M.
- Spiniello C.
- Napolitano N. R.
- D'Ago G.
- La Barbera F.
- Getman F.
- Roy N.
- Raj M. A.
- Radovich M.
- Brescia M.
- Cavuoti S.
- Koopmans L. V. E.
- Kuijken K. H.
- Longo G.
- Petrillo C. E.
DOIAbstract
Ultracompact massive galaxies (UCMGs), i.e., galaxies with stellar masses M*>8x1010M☉ and effective radii Re<1.5kpc, are very rare systems, in particular at low and intermediate redshifts. Their origin as well as their number density across cosmic time are still under scrutiny, especially because of the paucity of spectroscopically confirmed samples. We have started a systematic census of UCMG candidates within the ESO Kilo Degree Survey, together with a large spectroscopic follow-up campaign to build the largest possible sample of confirmed UCMGs. This is the third paper of the series and the second based on the spectroscopic follow-up program. Here, we present photometrical and structural parameters of 33 new candidates at redshifts 0.15≲...
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