AGN classification for X-ray sources in the 105 month Swift/BAT survey
ATel #11414; N. Masetti, L. Bassani, E. Palazzi, A. Malizia, J. B. Stephen (INAF-OAS, Bologna) and P. Ubertini (INAF-IAPS, Rome)
on 13 Mar 2018; 13:32 UT
Credential Certification: Nicola Masetti (masetti@iasfbo.inaf.it)
Subjects: Optical, X-ray, AGN
We here provide classifications for 8 hard X-ray sources listed as 'unknown AGN' in the 105 month Swift/BAT all-sky survey catalogue (Oh et al. 2018, ApJS, 235, 4).
The corresponding optical spectra were extracted from the 6dF Galaxy Survey (Jones et al. 2009, MNRAS, 399, 683). They were classified using the criteria of Veilleux & Osterbrock (1987, ApJS, 63, 295) and the line ratio diagnostics of Ho et al. (1993, ApJ, 417, 63) and Kauffmann et al. (2003, MNRAS, 346, 1055); regarding the definition of subclasses for Seyfert 1 galaxies, the H_beta/[O III] line flux ratio criterion described in Winkler (1992, MNRAS, 257, 667) was used.
If not indicated otherwise, the coordinates reported below are extracted from the Simbad database.
| ID |
Swift Name |
RA(J2000) |
dec(J2000) |
6dFGS counterpart |
class and redshift |
| 1226 |
J0120.7-1444 |
01 20 43.032 |
-14 43 55.66 |
6dFGS g0120431-144356 |
Sy1.9 @ z=0.03937 |
| 280 |
J0528.1-3933 |
05 28 02.01* |
-39 34 44.7* |
6dFGS g0528020-393445 |
Starburst/composite @ z=0.03669 |
| 1311 |
J0726.6-4634 |
07 26 24.240 |
-46 20 57.43 |
6dFGS g0726242-462057 |
Sy2 @ z=0.03036 |
| 1377 |
J1048.6-3901 |
10 48 33.82 |
-39 02 38.0 |
6dFGS g1048338-390238 |
Sy1.5 @ z=0.04464 |
| 1413 |
J1300.5-0759 |
13 00 19.080 |
-08 05 14.58 |
6dFGS g1300191-080515 |
Sy2 @ z=0.02694 |
| 1589 |
J2043.8-0958 |
20 44 22.141 |
-09 57 35.64 |
6dFGS g2044222-095735 |
Sy1.8 @ z=0.14186 |
| 1601 |
J2117.7-0208 |
21 17 41.623 |
-02 08 34.15 |
6dFGS g2117416-020834 |
Sy1 @ z=0.09022 |
| 1625 |
J2306.3-5147 |
23 06 16.560 |
-51 47 46.27 |
6dFGS g2306166-514747 |
Sy1.9 @ z=0.09588 |
Note.
*: Coordinates from 6dF Galaxy Survey. The source is the southern component of the pair of interacting galaxies ESO 306 and it is consistent, within the corresponding positional uncertainty, with the X-ray source 3XMM J052802.1-393445 (Rosen et al. 2016, A&A, 590, A1).
