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MALS-NOT: Identifying Radio-Bright Quasars for the MeerKAT Absorption Line Survey
- Source :
- Astrophysical Journal Supplement, Astrophysical Journal Supplement, American Astronomical Society, 2018, 235 (1), pp.10. ⟨10.3847/1538-4365/aaab51⟩
- Publication Year :
- 2018
- Publisher :
- arXiv, 2018.
-
Abstract
- We present a preparatory spectroscopic survey to identify radio-bright, high-redshift quasars for the MeerKAT Absorption Line Survey (MALS). The candidates have been selected on the basis of a single flux density limit at 1.4 GHz (>200 mJy) together with mid-infrared color criteria from the Wide-field Infrared Survey Explorer (WISE). Through spectroscopic observations using the Nordic Optical Telescope, we identify 72 quasars out of 99 candidates targeted. We measure the spectroscopic redshifts based on characteristic, broad emission lines present in the spectra. Of these 72 quasars, 64 and 48 objects are at sufficiently high redshift (z>0.6 and z>1.4) to be used for the L-band and UHF-band spectroscopic follow-up with the Square Kilometre Array (SKA) precursor in South Africa: the MeerKAT.<br />Accepted for publication in ApJS. Supplementary figure sets available in the source files
- Subjects :
- Infrared
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Spectral line
Nordic Optical Telescope
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Emission spectrum
010306 general physics
010303 astronomy & astrophysics
ComputingMilieux_MISCELLANEOUS
Astrophysics::Galaxy Astrophysics
[PHYS]Physics [physics]
Physics
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Quasar
Astrophysics - Astrophysics of Galaxies
Redshift
Square kilometre array
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Subjects
Details
- ISSN :
- 00670049 and 15384365
- Database :
- OpenAIRE
- Journal :
- Astrophysical Journal Supplement, Astrophysical Journal Supplement, American Astronomical Society, 2018, 235 (1), pp.10. ⟨10.3847/1538-4365/aaab51⟩
- Accession number :
- edsair.doi.dedup.....eaf8987c445c60e034069e69034f9853
- Full Text :
- https://doi.org/10.48550/arxiv.1802.00482