Blazars, one of the most extreme classes of active galaxies, constitute so far the largest known population of.-ray sources, and their number is continuously growing in the Fermi catalogs. However, in the latest release of the Fermi catalog there is still a large fraction of sources that are clas...
Crespo, NA
,
Massaro, F
,
Milisavljevic, D
,
Landoni, M
,
Chavushyan, V
,
Patino-Alvarez, V
,
Masetti, N
,
Jimenez-Bailon, E
,
Strader, J
,
Chomiuk, L
,
Katagiri, H
,
Kagaya, M
,
Cheung, CC
,
Paggi, A
,
D'Abrusco, R
,
Ricci, F
,
La Franca, F
,
Smith, HA
,
Tosti, G
,
[OPTICAL SPECTROSCOPIC OBSERVATIONS OF GAMMA-RAY BLAZAR CANDIDATES. VI. FURTHER OBSERVATIONS FROM TNG, WHT, OAN, SOAR, AND MAGELLAN TELESCOPES]
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OPTICAL SPECTROSCOPIC OBSERVATIONS OF GAMMA-RAY BLAZAR CANDIDATES. VI. FURTHER OBSERVATIONS FROM TNG, WHT, OAN, SOAR, AND MAGELLAN TELESCOPES
Oh, K
,
Schawinski, K
,
Koss, M
,
Trakhtenbrot, B
,
Lamperti, I
,
Ricci, C
,
Mushotzky, R
,
Veilleux, S
,
Berney, S
,
Crenshaw, DM
,
Gehrels, N
,
Harrison, F
,
Masetti, N
,
Soto, KT
,
Stern, D
,
Treister, E
,
Ueda, Y
,
[BAT AGN Spectroscopic Survey – III. An observed link between AGN Eddington ratio and narrow-emission-line ratios]
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BAT AGN Spectroscopic Survey – III. An observed link between AGN Eddington ratio and narrow-emission-line ratios
The existence of "radio-weak BL Lac objects" (RWBLs) has been an open question, and has remained unsolved since the discovery that quasars could be radio-quiet or radio-loud. Recently, several groups identified RWBL candidates, mostly found while searching for low-energy counterparts of the unide...
Massaro, F
,
Marchesini, EJ
,
D'Abrusco, R
,
Masetti, N
,
Andruchow, I
,
Smith, HA
,
[RADIO-WEAK BL LAC OBJECTS IN THE FERMI ERA]
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RADIO-WEAK BL LAC OBJECTS IN THE FERMI ERA
Context. Based on their overwhelming dominance among associated Fermi gamma-ray catalogue sources, it is expected that a large fraction of the unidentified Fermi objects are blazars. Through crossmatching between the positions of unidentified gamma-ray sources from the First Fermi Catalog of gamm...
Marchesini, EJ
,
Masetti, N
,
Chavushyan, V
,
Cellone, SA
,
Andruchow, I
,
Bassani, L
,
Bazzano, A
,
Jimenez-Bailon, E
,
Landi, R
,
Malizia, A
,
Palazzi, E
,
Patino-Alvarez, V
,
Rodriguez-Castillo, GA
,
Stephen, JB
,
Ubertini, P
,
[Looking for blazars in a sample of unidentified high-energy emitting Fermi sources]
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Looking for blazars in a sample of unidentified high-energy emitting Fermi sources
We present two-dimensional stellar and gaseous kinematics of the inner 0.7 × 1.2 kpc2 of the Seyfert 1.5 galaxy ESO 362-G18, derived from optical (4092-7338 Å) spectra obtained with the GMOS integral field spectrograph on the Gemini South telescope at a spatial resolution of ≈ 170 pc and spectral...
Humire, P.K.
,
Nagar, N.M.
,
Finlez, C.
,
Firpo, V.
,
Slater, R.
,
Lena, D.
,
Soto-Pinto, P.
,
Muñoz-Vergara, D.
,
Riffel, R.A.
,
Schmitt, H.R.
,
Kraemer, S.B.
,
Schnorr-Müller, A.
,
Fischer, T.C.
,
Robinson, A.
,
Storchi-Bergmann, T.
,
Crenshaw, M.
,
Elvis, M.S.
,
[An outflow in the Seyfert ESO 362-G18 revealed by Gemini-GMOS/IFU observations]
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An outflow in the Seyfert ESO 362-G18 revealed by Gemini-GMOS/IFU observations
PBC J2333.9-2343 is a peculiar active nucleus with two giant radio lobes and a weak blazarlike nucleus at their centre. In this work we show new optical, ultraviolet (UV), and X-ray data taken from the San Pedro Mártir telescope, the New Technology Telescope, NTT/EFOSC2, and the Swift/XRT satelli...
Hernández-García, L.
,
Vietri, G.
,
Panessa, F.
,
Piconcelli, E.
,
Chavushyan, V.
,
Jiménez-Andrade, E.F.
,
Bassani, L.
,
Bazzano, A.
,
Cazzoli, S.
,
Malizia, A.
,
Masetti, N.
,
Monaco, L.
,
Pović, M.
,
Saviane, I.
,
Ubertini, P.
,
[Variable broad lines and outflow in the weak blazar PBC J2333.9-2343]
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Variable broad lines and outflow in the weak blazar PBC J2333.9-2343
Context. The tidal disruption of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) is producing the most prominent substructure in the Milky Way (MW) halo, the Sagittarius Stream. Aside from field stars, it is suspected that the Sgr dSph has lost a number of globular clusters (GC). Many Galactic...
Sbordone, L.
,
Monaco, L.
,
Moni Bidin, C.
,
Bonifacio, P.
,
Villanova, S.
,
Bellazzini, M.
,
Ibata, R.
,
Chiba, M.
,
Geisler, D.
,
Caffau, E.
,
Duffau, S.
,
[Chemical abundances of giant stars in NGC 5053 and NGC 5634, two globular clusters associated with the Sagittarius dwarf spheroidal galaxy?]
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Chemical abundances of giant stars in NGC 5053 and NGC 5634, two globular clusters associated with the Sagittarius dwarf spheroidal galaxy?