9 ½ empirical Lyα relationships Jeff Cooke

1. UV continuum reddening, β parameter 2. ISM absorption line width/strength 3. Outflows and HI column density/covering fraction 4. Morphology 5. Luminosity 5.5 Kinematics 6 Escaping ionizing photons 7 Small-scale environment/interactions 8 Dark matter halo mass (HOD) 9 Large-scale spatial distribution (anti-correlation) 9.5 Morphology - density relation Intrinsic and extrinsic empirical Lyα relationships 9 ½ empirical Lyα relationships

aLBGeLBG 1: Relationship with UV continuum slope (β parameter) Lyα and spectral properties Shapley+ (2003)

aLBGeLBG Lyα and spectral properties 2: Relationship with ISM line strength 1: Relationship with UV continuum slope (β parameter) Shapley+ (2003)

aLBGeLBG Lyα and spectral properties Shapley+ (2003) 2: Relationship with ISM line strength 3: Relationship with outflows and/or H I column density 1: Relationship with UV continuum slope (β parameter)

HST imaging ~1.5” (~10kpc) aLBGeLBG 4: Relationship with morphology (restframe UV and optical) Lyα and morphology Law+ 2007, 2012a, 2012b

Cooke (2009) aLBGs and eLBGs naturally segregate on the CMD eLBGs aLBGs spectroscopicaLBGsspectroscopiceLBGsphotometricLBGs Steidel et al. (2003) z~3 data set: ~2,500 LBGs, ~800 spectra Lyα and the CMD 5: Relationship with luminosity

eLBGs aLBGs spectroscopicaLBGsspectroscopiceLBGs contours denote photometric LBGs CFHTLS Deep Fields z~3 data set: ~55,000 LBGs, ~200 Keck spectra Cooke+ (2013) Lyα and the CMD 5: Relationship with luminosity

Lyα and kinematics Wiggle-z data z ~ 1.5 Disks Dispersiondominated 5.5: Potential relationship with internal kinematics Emily Wisnioski and the Wiggle-z team

0% Lyα and ionizing photon escape fraction 6: Potential relationship with the fraction of escaping ionizing photons Cooke+ (2014) Observed fraction of ionising photons Observed ionizing photon fraction = (< 912Å photons) / (1500Å photons)

Lyα and small-scale environment Cooke+ (2010)

Lyα and small-scale environment Separation (kpc) 7: Relationship with pair separation – interaction indicator Cooke + (2010)

Lyα and environment

eLBGs aLBGs spectroscopicaLBGsspectroscopiceLBGs contours denote photometric LBGs CFHTLS Deep Fields z~3 data set: ~55,000 LBGs, ~200 Keck spectra Lyα and the CMD Cooke+ (2013)

Full LBG auto-correlation≈55,000galaxies * scaled to z ≈ 3 Lyα and large-scale environment Cooke+ (2013)

aLBGauto-correlation Lyα and large-scale environment Cooke+ (2013)

eLBGauto-correlation Lyα and large-scale environment 8: Relationship with parent DM halo mass, HOD

a/eLBGcross-correlation Lyα and large-scale environment Cooke+ (2013)

Cooke, Omori, Ryan-Weber (2013) a/eLBGcross-correlation Lyα and large-scale environment 9: Relationship with spatial distribution Cooke+ (2013)

Lyα and large-scale environment Cooke+ (2013)

SDSS DR7 correlation functions Wang, Brunner, & Dolence (2013) (-22.5) (-21.5) (-20.5) (-19.5) Lyα and large-scale environment

Here: radii of 2 – 4 Mpc h Lyα and large-scale environment

Here: radii of 2 – 4 Mpc h Lyα and large-scale environment Cooke+ (2013)

Here: radii of 2 – 4 Mpc h Lyα and large-scale environment Cooke+ (2013)

eLBG aLBG Lyα and large-scale environment 9 ½: Potential relationship with large-scale environment i.e., the morphology-density relation at high redshift

Intrinsic and extrinsic empirical Lyα relationships summary 1. UV continuum reddening, β parameter 2. ISM absorption line width/strength 3. Outflows and HI column density/covering fraction 4. Morphology 5. Luminosity 5.5 Kinematics 6 Escaping ionizing photons 7 Small-scale environment/interactions 8 Dark matter halo mass (HOD) 9 Large-scale spatial distribution (anti-correlation) 9.5 Morphology - density relation

a/eLBGcross-correlation Lyα and large-scale environment Cooke+ (2013)

gLBGauto-correlation Lyα and large-scale environment g/eLBGcross-correlation g/aLBGcross-correlation Cooke+ (2013)