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EVN imaging of the LIRGI sample

Varenius , E. (OSO- Chalmers ) Pérez-Torres, M.Á. (IAA-CSIC) Conway , J. (OSO- Chalmers ) Alberdi,A . (IAA-CSIC) Herrero- Illana , R. (IAA-CSIC). Naím Ramírez-Olivencia (IAA-CSIC). EVN imaging of the LIRGI sample. LIRGs. LIRGs ULIRGs Interacting galaxies AGN vs. starburst.

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EVN imaging of the LIRGI sample

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  1. Varenius, E. (OSO-Chalmers) Pérez-Torres, M.Á. (IAA-CSIC) Conway, J. (OSO-Chalmers) Alberdi,A. (IAA-CSIC) Herrero-Illana, R. (IAA-CSIC) Naím Ramírez-Olivencia (IAA-CSIC) EVN imaging of the LIRGI sample

  2. LIRGs • LIRGs • ULIRGs • Interactinggalaxies • AGN vs. starburst Neff et al. 2004

  3. LIRGs Magnelli et al. 2009 Normal LIRGs ULIRGs Redshift

  4. LuminousInfraRedGalaxiesInventory (LIRGI) eMERLINlegacysurvey J.Conway& M.Á. Pérez-Torres

  5. LuminousInfraRedGalaxiesInventory (LIRGI) J.Conway& M.Á. Pérez-Torres

  6. LuminousInfraRedGalaxiesInventory (LIRGI) eMERLINlegacysurvey J.Conway& M.Á. Pérez-Torres 42 (7 alreadyobserved) of themostLuminousnorthernLIRGs (8 ULIRGs)

  7. LuminousInfraRedGalaxiesInventory (LIRGI) IRAS GOALS LIRGI

  8. LuminousInfraRedGalaxiesInventory (LIRGI) eMERLINlegacysurvey J.Conway& M.Á. Pérez-Torres 42 (7 alreadyobserved) of themostLuminousnorthernLIRGs (8 ULIRGs) D < 250 Mpc

  9. LuminousInfraRedGalaxiesInventory (LIRGI)

  10. LuminousInfraRedGalaxiesInventory (LIRGI) eMERLINlegacysurvey J.Conway& M.Á. Pérez-Torres 42 (7 alreadyobserved) of themostLuminousnorthernLIRGs (8 ULIRGs) D < 250 Mpc http://lirgi.iaa.es

  11. LIRGI observations Diffuseemission Compact Sources Pérez-Torres et al. 2009 Herrero-Illana et al. 2013 - ATel

  12. ScienceBehindLIRGI witheMERLIN • Mapdiffuse radio emission • Trace thefree-free absorptionwithhighresolution • Measuremagneticfieldstrengths • Obtaindynamicalmasses • Spatialvariations in chemistryand physicalconditions

  13. Sciencebehind LIRGI withEVN PI: M.Á.Pérez-Torres • Contribution of AGNs and starbursts • Detection and measurement of Supernova Remnants (SNRs) • Core Collapse Supernova (CCSN) rate

  14. IR/radio relation (LIRGI) Yun et al. 2001

  15. IR/radio relation (LIRGI) Yun et al. 2001

  16. LIRGI observingrequestsforEVN • Contemporaneous C- and L-band • 1 Gb/s • Off sourcerms10bothbands • Integration time • Mutiplepointings, multiplecorrelations

  17. LIRGI observationswithEVN • Experiments: EP076 (A,B,C,D) and EP088(A,B,C,D). • Incoming EP088(E,F) • EP088(G,H) to observedthisOctober • Antennasobserving : Effelsberg Westerbork Jodrell Bank (Lovell) Onsala Medicina Torun Yebes (Cband) Svetloe Zelenchukskaya Badary Urumqui Shangai Hartebeesthoek

  18. LIRGI observationswithEVN • Sourcesobtained: IRAS10565 VV340 CGCG448 IRASF15250 NGC6090 NGC6670 NGC0695 VV250 VV705 MRK0331 MCG+12-02-00 III ZW035 IRAS03359+15 IC5298 NGC2623 NGC5256 NGC7674 IRASF17132 18/35LIRGs in LIRGI! (12 reduced)

  19. LIRGI observationswithEVN • EP076 (A,B,C,D)(session 3, 2012)

  20. LIRGI observationswithEVN • EP088 (C ,D)(session 1, 2014)

  21. LIRGI observationswithEVN Typical values: Associatedluminositywithrms:

  22. LIRGI observationswithEVN NGC2623 55kpc 16kpc D=79 Mpc

  23. LIRGI observationswithEVN NGC2623 55kpc 16kpc D=79 Mpc 2.3pc 1.7pc L-band C-band

  24. LIRGI observationswith EVN IRASF10565+2448 36 kpc 31 kpc D=190 Mpc

  25. LIRGI observationswith EVN C-band IRASF10565+2448 36 kpc 9pc 31 kpc L-band 26,8pc D=190 Mpc

  26. LIRGI observationswith EVN =-1,3 rms rms =1,51 4 3 1 AGN 2 L-band =0,6 =0,02

  27. Summary • Observations of highresolution at radio wavelenghts of 18/35 LIRGsof the LIRGI survey • Detections at bothbands: • L band: 2 • C band: 3 • Bothbands: 3 • rms ~25-30 Jy/b, about twice the expected value • Detection of compact components with values of a few times 10^27 erg/s/Hz, typical of SNe and/or SNRs

  28. Summary • Gooddetection of at least 2 AGNs (evidenceboth in the espectral index and luminosity) • Overall, ourcurrent EVN observations show evidencefor: • AGN dominated nuclear sources (e.g. NGC 2623) • Mixingof SB and AGN activity (e.g., IRAS10565+2448) • SB-dominatedsources (several non-detections => diffusesynchrotronemission)

  29. Bottomlines local universe • eMERLINwilleventually trace thediffuse radio emission of thekpcscaleregions • LIRGI EVN isalreadyshowingtheexistence of compact components (AGNs as well as CCSNe/SNRs) thatwillhelp to characterizetheinnermost 100 pc regions of LIRGs and ULIRGs

  30. FutureWorkwith LIRGI • Remaining 17 U/LIRGs. • IncomingobservationswitheMERLIN • Improvement of thelastepochimages • Complete thecatalogwith new information (SNRs, AGN (yes/no), spectralindex) • Offerthe complete legacyprojectforthescientificcommunity

  31. THANK YOU!

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