1. ALMA User Perspective: Galactic Studies
Some Topics in the Origins of Solar Systems
David J. Wilner
Harvard-Smithsonian Center for Astrophysics

2. Schematic Origins of Solar Systems
core formation and initial conditions
Alves et al. 2001
105 yr
protostar
J. Jørgensen
107 yr
100 AU
pre-main-sequence star and protoplanetary disk
McCaughren & O’Dell 1996
108 yr
star, planetary system, debris
Marois et al. 2010
sequence of mass evolution: from dense core to star + debris
ALMA images dust and gas at key long wavelengths ~ 0.3 to 9 mm

3. ALMA: Large, Best Site, Best Receivers…
 much deeper individual spectro-imaging studies and statistical views,
ALMA
SMA
CARMA
IRAM PdBI
ALMA
Early Science
inspired by E. Rosolowsky

4. Chris Stark dusty KB model
Debris Disk Structure
ALMA
Wilner et al. 2011
ALMA
Early Science
Chris Stark dusty KB model
ALMA
star
disk
Nilsson et al. 2009
>15% of nearby stars from infrared excess
2nd generation dust, collisions >km bodies
e.g. β Pic, A6V, 19 pc
small dust ≠ large dust

5. Terrestrial Planet Zone Debris
HD 69830: K0V, 12.5 pc
mid-IR: dust at ~1 AU, terrestrial planet zone
outside 3 Neptune mass radial velocity planets
about 0.3 mJy at 450 mm
0.2 arcsec = 2.5 AU
Mark Wyatt
ALMA
Lovis et al. 2006
inclination  planet masses
non-axisymmetric structure?
synoptic studies?
Beichman et al. 2005, Lisse et al. 2007

6. Protoplanetary Disk Dust
CARMA 1.3 mm
DG Tau
RY Tau
Isella et al. 2010
100 AU
1-10 Myr, gas and trace dust
structure, holes, gaps, planets!
100’s at 150 pc, 1000’s <1 kpc
SMA 870 μm Sean Andrews
870 mm
Williams et al. 2005
at the limits of ALMA
Wolf & D’Angelo 2005
5 AU

7. Protoplanetary Disk Gas
kinematics, accretion, chemistry, dispersal
Oberg et al. 2010
HD CO J= @44 m/s Hughes et al. 2011
Aikawa 2006

8. Protostars: Infall, Disk, Outflow
nature of collapse?
redshifted absorption
DiFrancesco et al. 2001
role of B field?
dust polarization
Girart et al. 2006
disk formation,
evolution, stability?
spatial filtering Menv, Mdisk
Keene & Masson 1990
outflow origins?
collimation, rotation
F. Gueth
Spitzer 3.6, 4.5, 8.0 μm and SCUBA 850 μm
Jørgensen et al. 2009

9. Concluding Remarks
ALMA offers unprecedented sensitivity at millimeter wavelengths (already at start of Early Science)
many fundamental issues to address, e.g. from dense cores to debris
reach Solar System scales for 100’s to 1000’s of sources
expect a lot of surprises
ALMA