VizieR Online Data Catalog: KiDS ultracompact massive galaxies sp. obs. (Scognamiglio+, 2020)

The ESO Kilo Degree Survey (KiDS) is one of the ESO public wide-area surveys (1350deg² in total) being carried out with the VLT Survey Telescope. It provides imaging data with unique image quality (pixel scale of 0.21/pixel and a median r-band seeing of 0.65") and baseline. As baseline sample of our search, we use the data included in the third Data Release of KiDS (KiDS-DR3) presented in de Jong+ 2017 (II/347).

Spectroscopic follow-up data have been collected in the years 2017 and 2018 during three separate runs, two carried out with the 3.6m Telescopio Nazionale Galileo (TNG) and one using the 2.54m Isaac Newton Telescope (INT), both located at Roque de los Muchachos Observatory (Canary Islands). Data on 13 luminous UCMG candidates have been obtained with the IDS spectrograph during six nights in March 2017 at the INT telescope (wavelength range 4000-8000Å and R=560), in visitor mode (PI: C. Tortora, ID: 17AN005). See Section 3.1. 20 spectra of UCMG candidates have been collected using the Device Optimized for the Low RESolution (DOLORES) spectrograph mounted on the 3.5m TNG, during six nights in March 2017 and 2018 (PI: N.R. Napolitano, ID: A34TAC_{22 and A36TAC}20; resolution R=585 and wavelength range 4000-8000Å). See Section 3.2.

In addition to the 33 new UCMG candidates presented in this paper, we also apply the same kinematics procedure to the 28 UCMG candidates from Tortora+ 2018MNRAS.481.4728T 6 observed with TNG and 22 with the New Technology Telescope (NTT), which we refer to as the ucmg_tngt18 and ucmg_nttt18 samples, respectively. See Sections 1 and 3.4.

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