2013A&A...559A..58M

Query : 2013A&A...559A..58M

2013A&A...559A..58M - Astronomy and Astrophysics, volume 559A58-58 (2013/11-1)

BL Lacertae identifications in a ROSAT-selected sample of Fermi unidentified objects.

MASETTI N., SBARUFATTI B., PARISI P., JIMENEZ-BAILON E., CHAVUSHYAN V., VOGT F.P.A., SGUERA V., STEPHEN J.B., PALAZZI E., BASSANI L., BAZZANO A., FIOCCHI M., GALAZ G., LANDI R., MALIZIA A., MINNITI D., MORELLI L. and UBERTINI P.

Abstract (from CDS):

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 ROSAT All-Sky Survey Bright Source Catalog is presented here. It has been found or confirmed that 25 of them are BL Lacertae objects (BL Lacs), while the remaining two are Galactic cataclysmic variables (CVs). This strongly suggests that the sources in the first group are responsible for the GeV emission detected with Fermi, while the two CVs most likely represent spurious associations. We thus find an 80% a posteriori probability that the sources selected by matching GeV and X-ray catalogs belong to the BL Lac class. We also show suggestions that the BL Lacs selected with this approach are probably high-synchrotron-peaked sources and in turn good candidates for the detection of ultra-high-energy (TeV) photons from them.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: galaxies - BL Lacertae objects: general - novae, cataclysmic variables - techniques: spectroscopic

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PMN J0051-6242 BLL 00 51 16.6464761530 -62 42 04.408098612 17.50 17.42 17.38   16.493 ~ 59 1
2 HE 0052-2511 BLL 00 54 46.7593476432 -24 55 29.219073024 17.06 16.85 16.78     ~ 57 0
3 RX J0131.1+6120 BLL 01 31 07.2257589038 +61 20 33.372505609           ~ 54 0
4 RX J0137.7+5814 BLL 01 37 50.4761854680 +58 14 11.321731860           ~ 66 2
5 6dFGS gJ022314.3-111738 BLL 02 23 14.2526085528 -11 17 38.474757384   19.02   18.46   ~ 47 0
6 RX J0506.9-5435 BLL 05 06 57.8154316665 -54 35 03.822937816 17.60 17.25 17.14   15.822 ~ 62 0
7 1RXS J060409.4-481726 BLL 06 04 08.6207497217 -48 17 25.157359371 17.96 17.91 17.79     ~ 51 1
8 RX J0648.7+1516 BLL 06 48 47.6488006968 +15 16 24.797585352       16.2   ~ 99 1
9 PSR J0838-2827 Psr 08 38 30.15 -28 25 55.5           ~ 49 0
10 RX J0838.7-2827 CV* 08 38 43.3520551272 -28 27 01.143230076           ~ 23 0
11 HD 74208 SB* 08 41 21.3076323768 -35 57 15.453023040   8.28 7.91     F2V 18 0
12 PMN J0841-3555 BLL 08 41 21.6333765672 -35 55 05.970173772           ~ 42 1
13 SDSS J084839.66+050617.8 Bz? 08 48 39.66265 +05 06 17.8982           ~ 21 0
14 XSS J12270-4859 Psr 12 27 58.7476831464 -48 53 42.824592960           ~ 321 0
15 1RXS J130421.2-435308 BLL 13 04 21.0058097184 -43 53 10.199729472 16.09 15.84 15.71     ~ 72 1
16 PMN J1307-4259 BLL 13 07 37.9837746648 -42 59 38.986887192 16.39 16.10 15.92 15.80 14.59 ~ 68 1
17 PMN J1353-6640 Bla 13 53 40.14159 -66 39 57.6631           ~ 40 1
18 RX J1419.0+7732 BLL 14 19 00.3556447992 +77 32 29.346440708           ~ 49 1
19 1FGL J1544.5-1127 Psr 15 44 14.33 -11 24 42.0           ~ 70 0
20 1RXS J154439.4-112820 X 15 44 39.4 -11 28 20           ~ 31 0
21 2FGL J1553.5-3116 BLL 15 53 33.5452374288 -31 18 31.423004316       15.7   ~ 53 1
22 1RXS J164328.1-064627 BLL 16 43 28.9223009616 -06 46 19.767702828           ~ 48 0
23 PMN J1823-3453 BLL 18 23 38.5909469504 -34 54 12.040672189           ~ 56 1
24 RX J1841.7+3218 BLL 18 41 47.0421791016 +32 18 39.144474684           ~ 54 0
25 W 49b SNR 19 11 09.5 +09 06 21           ~ 500 1
26 87GB 192614.4+614823 BLL 19 26 49.8911645880 +61 54 42.345978048           ~ 54 1
27 PMN J1933+0726 BLL 19 33 20.3032558244 +07 26 21.865764808           ~ 43 1
28 1RXS J194246.3+103339 BLL 19 42 47.4841298280 +10 33 27.102911688           ~ 63 1
29 RX J2042.1+2426 BLL 20 42 06.0494502576 +24 26 52.336351968           ~ 54 1
30 BD+49 3420 * 20 56 41.9684258112 +49 40 17.570654508   9.50 8.82     A2 14 0
31 2MASS J20564271+4940068 BLL 20 56 42.7402786032 +49 40 06.604076316           ~ 79 1
32 PHL 1744 BLL 21 46 36.9607739613 -13 44 00.663328644   17.6       ~ 46 0
33 1RXS J232256.7-491658 BLL 23 22 54.4278625059 -49 16 30.398778875           ~ 42 1
34 2MASS J23291427+3754146 Bla 23 29 14.2674395856 +37 54 14.484094488           ~ 50 1

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