Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28589
Title: Optical spectroscopic observations of gamma-ray blazar candidates VIII: the 2016-2017 follow up campaign carried out at SPM, NOT, KPNO and SOAR telescopes
Authors: Marchesini, E. J.
Peña-Herazo, H. A.
Álvarez Crespo, N.
Ricci, F.
Negro, M.
Milisavljevic, D.
Massaro, F.
MASETTI, NICOLA 
LANDONI, Marco 
Chavushyan, V.
D'Abrusco, R.
Jiménez-Bailón, E.
La Franca, F.
PAGGI, Alessandro 
Smith, H. A.
Tosti, G.
Issue Date: 2019
Journal: ASTROPHYSICS AND SPACE SCIENCE 
Number: 364
Issue: 1
First Page: 1
Abstract: The third Fermi source catalog lists 3033 γ -ray sources above 4σ significance. More than 30% are classified as either unidentified/unassociated Gamma-ray sources (UGSs), with about 20% classified as Blazar candidates of uncertain types (BCUs). To confirm the blazar-like nature of candidate counterparts of UGSs and BCUs, we started in 2012 an optical spectroscopic follow up campaign. We report here the spectra of 36 targets with observations from the Observatorio Astronómico Nacional San Pedro Mártir, the Southern Astrophysical Research Observatory, the Kitt Peak National Observatory and the Northern Optical Telescope, between 2016 and 2017. We confirm the BL Lac nature of 23 sources, and the flat spectrum radio quasar nature of other 7 ones. We also provide redshift estimates for 19 out of these 30 confirmations, with only one being a lower limit due to spectral features ascribable to intervening systems along the line of sight. As in previous analyses, the largest fraction of now-classified BCUs belong to the class of BL Lac objects, that appear to be the most elusive class of active galactic nuclei. One of the BL Lacs identified in this work, associated with 3FGL J2213.6-4755, lies at a redshift of z>1.529, making it one of the few distant gamma-ray BL Lac objects.
URI: http://hdl.handle.net/20.500.12386/28589
URL: https://link.springer.com/article/10.1007/s10509-018-3490-z
ISSN: 0004-640X
DOI: 10.1007/s10509-018-3490-z
Bibcode ADS: 2019Ap&SS.364....5M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

Files in This Item:
File Description SizeFormat 
1903.10011.pdfpostprint2.09 MBAdobe PDFView/Open
Marchesini2019_Article_OpticalSpectroscopicObservatio.pdf[Administrators only]6.29 MBAdobe PDF
Show full item record

Page view(s)

8
checked on Jan 22, 2021

Download(s)

2
checked on Jan 22, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE