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Transcript
Discussion Session A: “Evidence” What evidence is there for a symbio'c connec8on between AGN and star forma8on? Chairs: James Aird and James Mullaney Symbiosis? •  According to Dic8onary on Mac (and Richard Bower) ?
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Symbiosis? •  What we asked…. A)  BH-­‐bulge rela8ons B) Vol-­‐avg SFR and BH acc. Global rela8ons = symbiosis?? C) Theory (= evidence?) Symbiosis •  What you said…. BH-­‐bulge rela8ons Strongly agree Vol-­‐avg SFR and BH acc. Moderately agree Don't agree Theory 0 20 40 60 80 Correla8on = interac8on? Ask the audience: Are BH-­‐bulge rela8ons and/or SFR-­‐
accre8on density correla8on evidence for a symbio'c connec8on? • A) Yes • B) No What is (the best) evidence for a symbio8c connec8on? •  A) Correla8ons between nuclear SFR and instantaneous LAGN •  B) Correla8on of SFR and average LAGN (or BH accre8on rate) •  C) Increased AGN frac'on in SF galaxies •  D) Radio AGN are associated with quiescent galaxies/high mass halos/hot atmospheres •  E) None of these What else is/would be evidence for a symbio8c connec8on?? Connec8ons between AGN luminosity and SF •  Symbiosis = mutual benefit • more SF = more AGN? •  Have we reached a consensus yet on SFR-­‐LAGN correla8ons? •  Issues = galaxy type, AGN type, luminosity range, range of SFR, redshia •  Are we plobng the right thing? •  Does short-­‐term variability of AGN explain everything? Are we plobng the right thing? Flora Stanley (Poster A10) (+Rosario talk, Carroll poster, Uygun poster) Fabio Vito Chien-­‐Ting Chen Mojegan Azadi Ask the audience: What type of galaxy is most likely to host an AGN? • 
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A) Starburst galaxies B) Normal star-­‐forming galaxies C) Quiescent galaxies D) Massive galaxies E) Green valley/transi8on galaxies F) All equally likely Is there an evolu8on in the types of galaxies that host AGN? Is it just selec8on effects? David Rosario / Taro Shimizu / Manuela Maglioccheb / Flora Stanley (poster) / Kenta Matsuoka (poster) / Gulay Gurkan Uygun (poster) How reliable is our evidence – how well can we measure AGN, host galaxy proper8es, etc.? •  What do we need to measure: –  SFR (star forma8on history? IR vs opt/UV?) –  host stellar mass (gas mass? halo mass?) –  LAGN X-­‐ray? From SED fibng? IR? Radio? –  BH mass, AGN accre8on rate (Eddington ra8o) –  morphologies •  Laure Ciesla / Evanthia Hatziminaoglou / Chris Carroll (poster)