1. Normal Galaxies Sample From 2dF-XMM Wide Angle Survey Jonathan Tedds, Silvia Mateos, Mike Watson, Matthew Page, Francisco Carrera, Mirko Krumpe, Jacobo Herrero, Amalia Corral … XMM-Newton SSC X-ray & Observational Astronomy Yueheng Xu

2. 2dF-XMM Wide Angle Survey 10 degree 2 > 3000 X-ray sources from ~ 70 XMM observations Optical spectra from 2dF system on AAT in 27 pointings > 1000 sources spectroscopically identified X-ray & Observational Astronomy

3. 2dF spectral identifications GAL: absorption line galaxies NELG: narrow emission line galaxies BLAGN: broad line AGNSTARs

4. X-ray & Observational Astronomy Sample selection: Galaxies with: (1) Absorption line or narrow emission line 2dF spectra i.e. GAL or NELG (2) X-ray flux to optical flux ratios ≤ 0.1, i.e. log 10 (f X / f OPT ) ≤ -1 f X in 0.2-12 keV, and log10 (f X / f OPT ) calculated as log 10 (f X /f OPT ) = log 10 f X + 5.5 + R/2.5 (3) X-ray luminosities L X ≤ 10 43 erg s -1 L X in 0.2-12 keV

5. X-ray & Observational Astronomy Sample selection: + Sample sources NELG GAL BLAGN Star NELG GAL BLAGN This work The sample includes 72 normal galaxy candidates with the mean z of 0.13. This makes up ~40% of the X-ray emitting galaxies (R < 19) in the area – essentially those which would meet our selection criteria.

6. X-ray & Observational Astronomy Information available: X-ray:spectra/hardness ratios, extent Optical:image, spectra Other wavelengths:Radio, IR…

7. X-ray & Observational Astronomy HII Composite HII AGN Seyfert LINER AGN (definite and tentative) HII-region like galaxy (definite and tentative) Galaxies are marked based on their final classifications, which does not include Composite type as an independent type. AGN type includes Seyfert and LINERs. One σ errors are shown only when the source has been definitely classified under the line ratio diagnostic classification schema. Emission line ratio classification

8. X-ray & Observational Astronomy HR2=(CR3-CR2)/(CR2+CR3) HR3=(CR4-CR3)/(CR3+CR4) CR2: 0.5-1.0 keV CR3: 1.0-2.0 keV CR4: 2.0-4.5 keV Galaxies are marked based on their final classifications. Green grid: non-thermal (power-law) model with Γ = 0.75, 1.0, 1.5, 2.0, and 2.5 from top to bottom, and N H = 0, 1×10 20, 1×10 21, 5×10 21, 1×10 22, and 5×10 22 cm -2 from left to right. Blue grid: thermal model (APEC) with kT = 0.1, 0.25, 1.0, 1.5, 2.0, 2.5 and 3.0 keV from bottom to top, and N H = 0, 1×10 20, 1×10 21, 5×10 21 cm -2 from left to right. AGN (definite and tentative) HII-region like galaxy (definite and tentative) Hot gas halo (definite and tentative) Normal galaxy X-ray hardness ratio diagram

9. X-ray & Observational Astronomy X02262_00066 z = 0.066 N H (intrinsic) = 45.2 (-16.6, +29.7) 10 20 cm -2 Power-law: Г = 1.64 (-0.33, +0.38) Absorbed AGN candidate. The 2dF optical spectrum lacks strong emission lines, but the absorbed hard XMM X-ray spectrum and relatively high X-ray luminosity (L X ≈ 4.7 × 10 41 erg s -1 ) indicate a possible obscured AGN.

10. X-ray & Observational Astronomy X02418_00068 z = 0.077 Raymond-Smith: kT = 0.69 (-0.18, +0.14) keV + Power-law: Г = 1.80 (-0.40, +0.40) Starburst Galaxy. The 2dF optical spectrum of this system shows evidence of existence of strong star-forming activity. The XMM X-ray spectrum requires both hard and soft components, which is consistent with the co-existence of a starburst and an AGN found in infrared (Farrah et al. 2003).

11. X-ray & Observational Astronomy X21226_00075 z = 0.084 Raymond-Smith: kT = 0.80 (-0.07, +0.05) keV Gas halo. X-ray source extent and the soft XMM spectrum suggest that this galaxy sits within a group of galaxies (also evident in optical image). The 0.2-12 keV luminosity derived from the best fit model is ~ 1.8 × 10 41 erg s -1.

12. X-ray & Observational Astronomy Breakdown of source types: definitetentativefraction of the sample AGN13 (18%)17 (24%)42% HII-region like galaxy10 (14%)1 (1%)15% Has halo12 (17%)4 (6%)22% Normal galaxy 1724% TOTAL 72 After excluding the AGN type sources from the sample, the remaining normal or star-forming galaxies have z = 0.027-0.3, log 10 (f X / f OPT ) = (-3.5)-(-1), L X = 10 40.1-42.4 erg s -1. Among the AGN (definite or tentative) in the sample, there are 5 possible XBONGs, whose AGN features are not accessible in optical spectra but have hard X-ray hardness ratios and/or high X-ray luminosities (L X > 10 42 erg s -1 ).

13. X-ray & Observational Astronomy Whole Sample Normal (and unclassified!) HII GAS AGN