Identifying the 3FHL Catalog. II. Results of the KOSMOS Optical Spectroscopy Campaign

S. Marchesi, A. Kaur, M. Ajello

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We present the results of the optical spectroscopy follow up of a sample of 28 unclassified blazars from the Third Fermi-LAT Catalog of High-Energy Sources (3FHL). All the spectra were taken with the 4 m Mayall telescope at Kitt Peak. With this follow-up program, we are able to classify 27 out of 28 objects as BL Lacs, while the remaining one is a flat spectrum radio quasar. We determine a redshift (z) for three of these objects and a lower limit on z for other four sources: the farthest object for which we obtain a redshift has z > 0.836. These results are part of a more extended campaign of optical spectroscopy follow up of 3FHL blazars, aimed to obtain a complete sample of blazars at >10 GeV, which will then be used to extend our knowledge on blazar emission mechanisms and on the extragalactic background light.

Original languageEnglish (US)
Article number212
JournalAstronomical Journal
Volume156
Issue number5
DOIs
StatePublished - Nov 2018

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Identifying the 3FHL Catalog. II. Results of the KOSMOS Optical Spectroscopy Campaign'. Together they form a unique fingerprint.

  • Cite this