WORKSHOP ULXs AND THEIR ENVIRONMENT June 13th 16th, 2016 Strasbourg, France

Transcription

1 WORKSHOP ULXs AND THEIR ENVIRONMENT June 13th 16th, 216 Strasbourg, France I GEDE PUTU MAHADIPA PRIAJANA COLLABORATORS: HESTI RETNO TRI WULANDARI KIKI VIERDAYANTI PREMANA W PREMADI SULISTYOWATI Affiliation: INSTITUTE OF TECHNOLOGY BANDUNG

2 Outline Motivation Combined Catalog Result Overlap Non Overlap Summary

3 Motivation To confirm ULX candidates (< 4Mpc) Examine two ULX catalogs, Liu (211) & Walton et al. (211) To investigate correlation between ULXs and their host galaxies Properties of galaxies (morphology, stellar mass, SFR, etc) ULXs properties (luminosity, position inside host galaxies, etc)

4 Combined Catalog

5 Chandra Comparing Liu & Walton XMM-Newton Catalogs Properties Liu (211) Walton et al. (211) Catalog of Galaxies RC3 RC3 Distance Galaxy HSTKP, SBF, Tully [92,88], Hubble flow Tully [88], Hubble flow Galaxy isophotal diameter (arcmin) > 1 - Distance limit (Mpc) 4 - Galaxy position RC3 RC3 (updated with NED and Vizier) D 25 isophotes RC3 RC3 Source catalog ACIS Chandra (27 Dec 14) 2XMM-DR1 Source position uncertainty (arcsec) < 1 < 2.4 ULXs outside R 25 Yes No ULXs luminosity (erg/s) > 2x1 39 > 1 39 Energy range (kev)

6 Combined ULXs catalog Criteria of selecting source as ULXs: a. Maximum Luminosity must be higher than 2 x 1 39 erg/s b. Reside in host galaxies within 4 Mpc in distance c. Located inside isophotaldiameter D 25 of galaxies d. Overlapping sources: position difference < 2.ʺ4 ULXs Luminosity [erg/s] Distribusi Luminositas ULXs terhadap jarak galaksi 1E+42 1E+41 1E+4 1E+39 1E+38 OVERLAP NON-OVERLAP 4 Mpc 5 1 NGC Galaxy Distance X = Liu (Mpc) (211) O = Walton et al. (211) Liu walton Position difference = ( RA1 RA2 cos (DEC1)) +(DEC1 DEC2)

7 Final Result of Combined Catalog SAMPLE ULXs GALAXIES Liu Only Walton Only Overlap (32 have overlap ULXs) Total

8 Results

9 Number of ULXs ULXs distribution based on Galaxy Type (Overlap Sample) Number of Galaxies Number of ULXs per Galaxy (Overlap Sample) Galaxy Type Number of ULXs per Galaxy Spiral 1.35 Elliptical 1.6 Lenticular 1 Irregular 1 Total Spiral Elliptical Lenticular Irregular Number of ULXs Number of Galaxies 5 Higher number of ULXs in Spiral Galaxies Nearly same number of ULXs/galaxy for Spiral and Elliptical -> completeness of elliptical galaxy (?)

10 Relative Number of ULXs ULXs distribution in host galaxy,2,15,1,5,1,2,3,4,5,6,7,8,9 1 R/R 25 ULXs distribution based on luminosity Number of ULXs,5,4,3,2, >78 ULXs Luminosity ( 1 39 erg/s) Total Luminosities ULXs Luminosity based on mass 1,4E+41 1,4E+4 1,4E+39 1,E+8 1,E+9 1,E+1 1,E+11 1,E+12 Stellar Mass (M ʘ ) Number of ULXs per Galaxy 2,5 2 1,5 1,5 ULXs distribution based on L FIR, L FIR ( 1 42 erg/s)

11 Relative Number of ULXs Total Luminosities,2,15,1,5,1,2,3,4,5,6,7,8,9 1 R/R 25 1,4E+41 1,4E+4 ULXs distribution in host galaxy ULXs Luminosity based on mass 1,4E+39 IC 342 Credit: 1,E+8 Nasa 1,E+9 1,E+1 1,E+11 1,E+12 Stellar Mass (M ʘ ) ULXs distribution based on luminosity Number of ULXs Number of ULXs per Galaxy,5,4,3 High number ULXs at.4.5 R/R25,2 Coincide with star forming region (example:,1 IC 342, NGC 1365) 2,5 2 1,5 1, >78 ULXs Luminosity ( 1 39 erg/s) ULXs distribution based on L FIR NGC 1365, Credit: ESO L FIR (1 42 erg/s)

12 Relative Number of ULXs ULXs distribution in host galaxy,2,15,1,5,1,2,3,4,5,6,7,8,9 1 R/R 25 ULXs distribution based on luminosity Number of ULXs,5 Dominant on low luminosity ULXs,4,3,2, >78 ULXs Luminosity ( 1 39 erg/s) Total Luminosities 1,4E+41 1,4E+4 1,4E+39 ULXs Luminosity based on mass 1,E+8 Total Luminosity of ULXs increase 1,E+9 1,E+1 1,E+11 1,E+12 Stellar Mass (M ʘ ) Number of ULXs per Galaxy 2,5 2 1,5 1,5 ULXs distribution based on L FIR L FIR Proxy to SFR No Clear Correlation detected, L FIR ( 1 42 erg/s)

13 Caution on non-overlap sample Overlap galaxy, but ULXs not overlap -> why? Liu -> More ULXs NGC 2146 NGC 2276 Chandra =3 XMM = 1 Possible explanations: Different instrument? Exposure time? Variability? High Spatial Resolution High Sensitivity Can resolve sources in crowded Can detect dim source better NGC area 144 NGC 1672

14 Relative Number of ULXs Total Luminosity ULXs distribution in host galaxy,2,15,1,5 2E+42 2E+41 2E+4 2E+39 2E+38 Higher number of ULXs near center,1,2,3,4,5,6,7,8,9 1 R/R 25 Overlap Circumnuclear Starburst Non-Overlap ULXs Luminosity based on mass 1,E+8 1,E+9 1,E+1 1,E+11 1,E+12 Stellar Mass (M ʘ ) ULXs distribution based on luminosity Relative Numbe of ULXs Same Distribution as Overlap Sample NGC 334,5,4,3,2,1 Number of ULXs/Galaxy Luminosity ( 1 39 erg/s) Overlap Non-Overlap ULXs distribution based on L FIR Same Distribution as Overlap Sample Circumnuclear Starburst ~ 5 pc Positive correlation with L FIR L FIR ( 1 42 erg/s) Overlap ULXs ~ 2 pc Non-Overlap

15 X-ray Luminosity Function Overlap Non-Overlap Fitting Model: Power-Law Power-Law with Luminosity Cut-off Luminosity Cut-Off ~ erg/s BHs Upper Limit ~ 1 M ʘ

16 Summary Total ULXs after combine:422 ULXs in 26 Galaxies 43 Overlap ULXs in 32 Galaxies -> more likely being ULXs There are lot of ULXs that not overlap -> need confirmation (why not detected in other mission) From overlap distribution: Elliptical and Spiral galaxies have nearly same value for Number of ULXs per Galaxy (Elliptical slightly higher) Luminosity < 1 4 erg/s for most ULXs No clear correlation with SFR XLF -> cut-off at ~2x1 4 erg/s

17 Thank You