172 citations · 849 across the 23 of their papers we have counts for
23 papers
Accurate classification of 75 counterparts of objects detected in the 54 month Palermo Swift/BAT hard X-ray catalogue
P. Parisi, N. Masetti, A. F. Rojas +10
Through an optical campaign performed at 4 telescopes located in the northern and the southern hemispheres, we have obtained optical spectroscopy for 75 counterparts of unclassifie…
BL Lacertae identifications in a ROSAT-selected sample of Fermi unidentified objects
N. Masetti, B. Sbarufatti, P. Parisi +15
The optical spectroscopic followup of 27 sources belonging to a sample of 30 high-energy objects selected by positionally cross correlating the first Fermi/LAT Catalog and the ROSA…
Symbiotic Stars in OGLE Data I. Large Magellanic Cloud Systems
R. Angeloni, C. E. Ferreira Lopes, N. Masetti +10
Symbiotic stars are long-orbital-period interacting-binaries characterized by extended emission over the whole electromagnetic range and by complex photometric and spectroscopic va…
Unveiling the nature of INTEGRAL objects through optical spectroscopy. X. A new multi-year, multi-observatory campaign
N. Masetti, P. Parisi, E. Palazzi +18
Within the framework of our program (running since 2004) of identification of hard X-ray INTEGRAL sources through optical spectroscopy, we present the results concerning the nature…
Stellar population properties for a sample of hard X-ray AGNs
L. Morelli, V. Calvi, N. Masetti +5
The aim of this paper is to study the stellar population of galaxies hosting an active galactic nucleus (AGN). We studied a sub-sample of hard X-ray emitting AGNs from the INTEGRAL…
Identification of newly-discovered sources belonging to the 4th IBIS catalog and to the 54 months Palermo Swift/BAT catalog
P. Parisi, N. Masetti, A. F. Rojas +17
The most recent all-sky surveys performed with the INTEGRAL and SWIFT satellites allowed the detection of more than 1500 sources in hard X-rays above 20 keV. About one quarter of t…
Optical identification of X-ray source 1RXS J180431.1-273932 as a magnetic cataclysmic variable
N. Masetti, A. A. Nucita, P. Parisi
The X-ray source 1RXS J180431.1-273932 has been proposed as a new member of the symbiotic X-ray binary (SyXB) class of systems, which are composed of a late-type giant that loses m…
Accurate classification of 29 objects detected in the 39 months Palermo Swift/BAT hard X-ray catalogue
P. Parisi, N. Masetti, E. Jiménez-Bailón +15
Through an optical campaign performed at 4 telescopes located in the northern and the southern hemispheres, plus archival data from two on-line sky surveys, we have obtained optica…
Multiwavelength studies of hard X-ray selected sources
Pietro Parisi
Hard X-ray surveys like those provided by IBIS and BAT on board the INTEGRAL and Swift satellites list a significant number of sources which are unidentified and/or unclassified an…
Unveiling the nature of INTEGRAL objects through optical spectroscopy. IX. 22 more identifications, and a glance into the far hard X-ray Universe
N. Masetti, P. Parisi, E. Jimenez-Bailon +14
(Abridged) Since its launch in October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and sour…
Accurate classification of 28 objects detected in the 39 months Palermo Swift/BAT hard X-ray catalogue
P. Parisi, N. Masetti, E. Jiménez-Bailón +12
Through an optical campaign performed at 4 telescopes located in the northern and the southern hemispheres, plus archival data from two on-line sky surveys, we have obtained optica…
The nature of 19 X-ray sources detected with INTEGRAL
N. Masetti, P. Parisi, E. Jimenez-Bailon +14
Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detectio…
Searching for AGNs among unidentified INTEGRAL sources
E. Maiorano, R. Landi, J. B. Stephen +13
We report on a new method to identify Active Galactic Nuclei (AGN) among unidentified INTEGRAL sources. This method consists of cross-correlating unidentified sources listed in the…
New AGN classifications in the Swift/BAT All-Sky Hard X-ray Survey
Pietro Parisi
Through an optical campaign performed at the San Pedro Martir (Mexico) Telescope and using the 6dF archive (http://www.aao.gov.au/local/www/6df, Jones et al. 2004), we determine or…
Study of the Sextans dwarf spheroidal galaxy from the DART CaII triplet survey
G. Battaglia, E. Tolstoy, A. Helmi +4
We use VLT/FLAMES intermediate resolution (R~6500) spectra of individual red giant branch stars in the near-infrared CaII triplet (CaT) region to investigate the wide-area metallic…
Optical/IR counterpart to the resolved X-ray jet source CXO J172337.5-373442 and its distance
Bhaswati Mookerjea, Pietro Parisi, Sudip Bhattacharyya +3
We present results of observations in the optical to mid-infrared wavelengths of the X-ray source CXO J172337.5-373442, which was serendipitously discovered in the Chandra images a…
The Palermo Swift-BAT hard X-ray catalogue III. Results after 54 months of sky survey
G. Cusumano, V. La Parola, A. Segreto +10
We present the Second Palermo Swift-BAT hard X-ray catalogue obtained by analysing data acquired in the first 54 months of the Swift mission. Using our software dedicated to the an…
Unveiling the nature of INTEGRAL objects through optical spectroscopy. VIII. Identification of 44 newly detected hard X-ray sources
N. Masetti, P. Parisi, E. Palazzi +17
(abridged) Hard X-ray surveys performed by the INTEGRAL satellite have discovered a conspicuous fraction (up to 30%) of unidentified objects among the detected sources. Here we con…
Revealing the nature of unidentified INTEGRAL sources through optical spectroscopy: an overview
P. Parisi, N. Masetti
Thanks to the INTEGRAL satellite the way of looking at the hard X-ray sky above 20 keV has changed substantially. Through the unique imaging and spectroscopy capabilities of the IB…
Revealing the nature of new unidentified INTEGRAL sources
N. Masetti, P. Parisi, E. Palazzi +17
Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detectio…
Accurate classification of 17 AGNs detected with Swift/BAT
P. Parisi, N. Masetti, E. Jiménez-Bailón +16
Through an optical campaign performed at 5 telescopes located in the northern and the southern hemispheres, plus archival data from two on line sky surveys, we have obtained optica…
On the identification of the Fermi/LAT source 0FGL J2001.0+4352 with a BL Lac
L. Bassani, R. Landi, N. Masetti +3
We report on the identification of the gamma-ray source 0FGL J20001.0+4352 listed in the Fermi bright source catalogue. This object, which has an observed 1-100 GeV flux of (7.8 +/…
Unveiling the nature of INTEGRAL objects through optical spectroscopy. VII. Identification of 20 Galactic and extragalactic hard X-ray sources
N. Masetti, P. Parisi, E. Palazzi +17
Within the framework of our program of assessment of the nature of unidentified or poorly known INTEGRAL sources, we present here spectroscopy of optical objects, selected through…