Low-z Scaling Relations Review - ISM✻@ST

A review talk on low-redshift scaling relations given to the ISM*@ST group.

Transcript

1. Low-z Galaxy
   Scaling Relations
   Or, “Here are Some of my
   Favourite Log-Log Plots”
   Chris Clark
   17/8/2020
   ISM✻@ST Group Meeting Talk
   

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2. Low-z Galaxy
   Scaling Relations
   Or, “Here are Some of my
   Favourite Log-Log Plots”
   Chris Clark
   17/8/2020
   ISM✻@ST Group Meeting Talk
   

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3. Chris Clark
   Clark+ (2015)
   Scaling Relations‽
   

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4. Chris Clark
   Constant Vigilance
   Kennicutt (1989, 1998)
   ~ Molecular Gas Mass
   ~ Star Formation Rate
   The Kennicutt-Schmidt Relation
   

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5. Chris Clark
   Constant Vigilance
   Kennicutt (1998), Smith (priv. comm.)
   Cigar
   Yellowstone Park
   Forest Fire
   Venus
   Jeep Cherokee sitting in
   closed garage for 1 hour
   Observable
   Universe
   

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6. Chris Clark
   Constant Vigilance
   Kennicutt (1998)
   ~ Star Formation Rate
   ~ Molecular Gas Mass
   The Kennicutt-Schmidt Relation
   

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7. Chris Clark
   The Tully-Fisher Relation
   Tully & Fisher (1977)
   

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8. Chris Clark
   The Baryonic Tully-Fisher Relation
   Freeman (1999); Walker (1999); McGaugh (2000,2020); Lelli+ (2015); Ponomareva+ (2018)
   T-F relation for
   just stellar mass
   T-F relation for
   baryonic mass (stars + HI)
   

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9. Chris Clark
   Ultra-Diffuse Galaxies Break the BTF?
   Van Dokkum+ (2018); Mancera-Piña+ (2019)
   

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10. Chris Clark
    Super Spirals Break the BTF Relation?
    Ogle+ (2019)
    

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11. Chris Clark
    Super Spirals Break Every Relation?
    Fall (1983); Ogle+ (2019)
    j∗
    = 2vmax
    Roptical
    (specific stellar angular momentum)
    The Fall Relation The Star Forming Main Sequence
    

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12. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017)
    MHI
    / M✻
    H2
    Depletion Time
    MH2
    / M✻
    GASS: GALEX Arecibo SDSS Survey HI for 1000 SDSS+GALEX galaxies with M✻
    >1010 & 0.025COLD-GASS: CO Legacy Database for GASS CO(1-0) for 350 representative GASS galaxies
    xCOLD-GASS: eXtended COLD-GASS Extending COLD-GASS down to M✻
    >109 for 530 galaxies total
    

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13. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2016,2017)
    Constant SSFR
    

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14. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017); Catinella (2015)
    MHI
    / M✻
    SSFR = SFR / M✻
    MH2
    / M✻
    SSFR = 0.1 Gyr-1
    

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15. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017); Catinella (2015)
    SFR / M✻
    MH2
    / M✻
    SSFR = 0.1 Gyr-1
    The Kennicutt-
    Schmidt Relation!
    MH2
    SFR
    

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16. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017); Catinella (2015)
    MHI
    / M✻
    SSFR = SFR / M✻
    MH2
    / M✻
    SSFR = 0.1 Gyr-1
    

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17. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017); Catinella (2015)
    H2
    Depletion Time
    MH2
    / MHI
    

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18. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017); Catinella (2015)
    H2
    Depletion Time
    MH2
    / MHI
    

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19. Chris Clark
    Cold Gas and the Danger Zone
    Saintonge+ (2011,2016,2017); Catinella+ (2015)
    H2
    Depletion Time
    MH2
    / MHI
    

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20. Chris Clark
    Big Differences Between Galaxies
    Gallagher+ (2018); Sun+ (2018)
    PHANGS
    

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21. Chris Clark
    Dust Evolution with Metallicity
    Rémy-Ruyer+ (2014); Galliano+ (2018)
    

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22. Chris Clark
    Dust Evolution with Metallicity
    Clark+ (2015); De Vis+ (2017)
    < Gas-Dominated Star-Dominated >
    

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23. Chris Clark
    ISM Scaling in Different Environments
    Cortese+ (2011); Boselli+ (2013); Davies+ (2019); Old+ (2020)
    But…
    (Star-Formation Efficiency)
    

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24. Chris Clark
    Conclusions
    Big things are big.
    Generally.
    (The devil is in the detail.)
    

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25. Chris Clark
    MH2
    /MHI
    versus Dust-to-Gas
    Casasola+ (2019)
    

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