J/A+A/619/A23 9Y-MST Catalogue (Campana+, 2018)
A MST catalogue of gamma-ray source candidates above 10 GeV and at Galactic
latitudes higher than 20°.
Campana R., Massaro E., Bernieri E.
<Astron. Astrophys. 619, A23 (2018)>
=2018A&A...619A..23C 2018A&A...619A..23C (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Gamma rays ; BL Lac objects
Keywords: gamma rays: general - gamma rays: galaxies - methods: data analysis
Abstract:
We describe a catalogue of gamma-ray source candidates selected using
the minimum spanning tree (MST) algorithm on the nine year Fermi-LAT
sky (Pass 8) at energies higher than 10GeV.
The extragalactic sky at absolute Galactic latitudes above 20° has
been investigated using rather restrictive selection criteria,
resulting in a total sample of 1342 sources.
Of these, 249 are new detections that have not been previously
associated with gamma-ray catalogues. A large portion of these
candidates have interesting counterparts, which are most likely
blazars. In this paper, we report the main results of the catalogue
selection and search of counterparts.
Description:
Complete 9 years MST (9Y-MST) catalogue, including 1342 sources with
their celestial and Galactic coordinates, MST parameters, associations
with published gamma-ray catalogues, possible multi-wavelength
associations and other comments.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
9y-mst.dat 284 1342 9Y-MST catalogue of gamma-ray sources above 10GeV
and at Galactic latitudes above |20| degrees
9y-mst.fit 2880 120 FITS version of the catalog
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See also:
VII/274 : The Roma BZCAT - 5th edition (Massaro+, 2015)
J/ApJS/171/61 : CRATES catalog (Healey+, 2007)
J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)
J/ApJS/199/31 : Fermi LAT second source catalog (2FGL) (Nolan+, 2012)
J/ApJS/215/14 : WIBRaLS catalog (D'Abrusco+, 2014)
J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)
J/ApJS/232/18 : The third Fermi-LAT >10GeV catalog (3FHL) (Ajello+, 2017)
J/A+A/598/A17 : The 2WHSP catalog (Chang+, 2017)
J/A+A/598/A134 : γ-ray signature in WHSP blazars (Arsioli+, 2017)
Byte-by-byte Description of file: 9y-mst.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Name of the source (9Y-MST JHHMM+DDMM)
19- 25 F7.3 deg RAdeg Right ascension (J2000)
27- 33 F7.3 deg DEdeg Declination (J2000)
35- 41 F7.3 deg GlON Galactic longitude
43- 49 F7.3 deg GlAT Galactic latitude
51- 54 I4 --- N Number of photons (1)
56- 61 F6.3 --- g Clustering degree (2)
63- 72 F10.4 --- M Magnitude of the cluster, defined as M=N*g
74- 78 F5.3 deg Rm Median radius (3)
80- 84 F5.3 deg Rmax Maximum radius (4)
86-102 A17 --- 3FHL Counterpart in the 3FHL catalogue,
3FHL JHHMM.m+DDMM
(Ajello et al., 2017, Cat. J/ApJS/232/18)
104-120 A17 --- 3FGL Counterpart in the 3FGL catalogue
3FGL JHHMM.m+DDMM
(Acero et al., 2015, Cat. J/ApJS/218/23)
121-139 A19 --- 2FGL Counterpart in the 2FGL catalogue
2FGL JHHMM.m+DDMM
(Nolan et al., 2012, Cat. J/ApJS/199/31)
141-158 A18 --- 1FGL Counterpart in the 1FGL catalogue
1FGL JHHMM.m+DDMM
(Abdo et al., 2010, Cat. J/ApJS/188/405)
160-172 A13 --- MST Counterpart in other MST catalogues
174-189 A16 --- 1BIGB Counterpart in the 1BIGB catalogue
JHHMMSS.s+DDMMSS
(Arsioli & Chang, 2017, Cat. J/A+A/598/A134)
191-206 A16 --- Other Other counterpart
208-284 A77 --- Notes Notes (5)
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Note (1): number of nodes for a cluster.
Note (2): the ratio of Λm (mean edge length in the MST built on a given
field) in the field to the mean edge length in the cluster
Note (3): distance from the cluster centroid containing 50% of the photons.
Note (4): distance from the cluster centroid to its farthest photon.
Note (5): Notes as follows:
FL8Y = cluster with a correspondent source in the FL8Y list within 6'
LMC = cluster in the Large Magellanic Cloud
BZc = possible blazar candidate
WB = possible counterpart in the WIBRaLS sample
(D'Abrusco et al., 2014, Cat. J/ApJS/215/14)
CR = possible counterpart in the CRATES catalogue
(Healey et al., 2007, Cat. J/ApJS/171/61)
2W = possible counterpart in the 2WSHP catalogue
(Chang et al., 2017, Cat. J/A+A/598/A17)
5BZB = cluster with a correspondent BL Lac object in the
5BZCAT (Cat. VII/274)
5BZQ = cluster with a correspondent FSRQ in the 5BZCAT (Cat. VII/274)
5BZG = cluster with a correspondent galaxy-dominated blazar in the
5BZCAT Cat. VII/274)
AGN = possible AGN counterpart
sp = possible spurious cluster due to background fluctuations
spp = very likely spurious cluster due to background fluctuations
ps = possible satellite cluster
ex = extended cluster
c+ex = extended cluster with interesting core structure
cc+ex = extended cluster with compact core
ccc+ex = extended cluster with a significant compact core
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Acknowledgements:
Riccardo Campana, riccardo.campana(at)inaf.it
(End) Riccardo Campana [INAF, Italy], Patricia Vannier [CDS] 13-Aug-2018