VizieR Online Data Catalog: hCOSMOS: Hectospec survey of galaxies in COSMOS (Damjanov+, 2018)
Abstract
We target galaxies with r-band magnitudes 17.77<r<21.3 in the UltraVISTA photometric catalog of Muzzin+, 2013, J/ApJS/206/8 for spectroscopy. We selected extended objects in HST images; see section 2.1 for further details.
We observed hCOSMOS galaxies with Hectospec mounted on the 6.5m MMT. The Hectospec spectra cover the wavelength range 3700-9100Å at a resolution of R~1500. We conducted observations during dark and gray nights in 2015 February, 2015 April, 2016 February, and 2016 March. We obtained 5492 science quality spectra (out of which 1405 are duplicates) in varying conditions. We include additional 275 spectra of galaxies in the COSMOS field from the Hectospec data archive. Thus, the hCOSMOS sample includes 4362 unique galaxies. Among these objects, 2661 have a redshift in the zCOSMOS (Lilly+ 2007, J/ApJS/172/70 ; 2009, J/ApJS/184/218) catalog and 1701 redshifts are completely new. For the galaxies that overlap with zCOSMOS, the Hectospec spectra yield a redshift with a smaller error along with broader wavelength coverage. (1 data file).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- March 2018
- DOI:
- 10.26093/cds/vizier.22340021
- Bibcode:
- 2018yCat..22340021D
- Keywords:
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- Galaxies;
- Spectra: optical;
- Velocity dispersion;
- Stars: masses