COMPLETEThe COordinated Molecular Probe Line Extinction Thermal Emission Survey

Alyssa A. Goodman, Principal Investigator (CfA)João Alves (ESA, Germany)

Héctor Arce (Caltech)Paola Caselli (Arcetri, Italy)

James DiFrancesco (HIA, Canada)Mark Heyer (UMASS/FCRAO)

Doug Johnstone (HIA, Canada)Scott Schnee (CfA, PhD student)

Mario Tafalla (OAN, Spain)Tom Wilson (MPIfR/SMTO)

2MASS/NICER Extinction Map of Orion

Current, Un-coordinated, State of Affairs

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SCUBA

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Molecular Line Map

Nagahama et al. 1998 13CO (1-0) Survey

Lombardi & Alves 2001Johnstone et al. 2001 Johnstone et al. 2001

The Rewards of Coordination

C18ODust EmissionOptical Image

NICER Extinction Map

Radial Density Profile, with Critical

Bonnor-Ebert Sphere Fit

Coordinated Molecular-Probe Line, Extinction & Thermal Emission Observations of Barnard 68

This figure highlights the work of Senior Collaborator João Alves and his collaborators. The top left panel shows a deep VLT image (Alves, Lada & Lada 2001). The middle top panel shows the 850 m continuum emission (Visser, Richer & Chandler 2001) from the dust causing the extinction seen optically. The top right panel highlights the extreme depletion seen at high extinctions in C18O emission (Lada et al. 2001). The inset on the bottom right panel shows the extinction map derived from applying the NICER method applied to NTT near-infrared observations of the most extinguished portion of B68. The graph in the bottom right panel shows the incredible radial-density profile derived from the NICER extinction map (Alves, Lada & Lada 2001). Notice that the fit to this profile shows the inner portion of B68 to be essentially a perfect critical Bonner-Ebert sphere

COMPLETE, Part 1

Observations:2002-- NICER/2MASS Extinction Mapping: dust column density maps ~5 degrees mapped with ~5' resolution

2002-- FCRAO/SEQUOIA 12CO and 13CO Observations: gas temperature, density and velocity information ~40" resolution on all AV>1(COMPLETE Awarded Key Project Status, 10/02)

2003-- SCUBA Observations: dust column density maps, finds all "cold" source ~20" resolution on all AV>6 mag (COMPLETE Awarded Time, 12/10/02)

c2d 2003-- Mid- and Far-IR SIRTF c2d Legacy Observations: dust temperature and column density maps ~5 degrees mapped with ~15" resolution (70 m + NICER on point source distribution)

Science:– Combined Thermal Emission data: dust spectral-energy distributions, giving emissivity, Tdust and Ndust

– Extinction/Thermal Emission inter-comparison: unprecedented constraints on dust properties and cloud distances, in addition to high-dynamic range Ndust map

– Spectral-line/Ndust Comparisons Systematic censes of inflow, outflow & turbulent motions enabled

– CO maps in conjunction with SIRTF point sources will comprise YSO outflow census

5 degrees (~tens of pc)

SIRTF Legacy Coverage of Perseus

COMPLETE, Part 2

(2003-5)

Observations, using target list generated from Part 1:NICER/8-m/IR camera OIR Observations: best density profiles for dust associated with "cores". ~10" resolution FCRAO + IRAM N2H+ Observations: gas temperature, density and velocity information for "cores” ~15" resolution, ongoing beginning 2002

Science:Multiplicity/fragmentation studies

Detailed modeling of pressure structure on <0.3 pc scalesSearches for the "loss" of turbulent energy (coherence)

FCRAO N2H+ map with CS spectra superimposed.

(Le

e,

Mye

rs &

Ta

falla

20

01

).

Is this Really Possible Now?

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Time (hours)

20152010200520001995199019851980

Year

1 Hour

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SCUBA-2

SEQUOIA+

NICER/8-m

NICER/SIRTFNICER/2MASS

AV~5 mag, Resolution~1'

AV~30 mag, Resolution~10"

13CO Spectra for 32 Positions in a Dark Cloud (S/N~3)

Sub-mm Map of a Dense Core at 450 and 850 m

1 day for a 13CO map then

1 minute for a 13CO map now

Pilot COMPLETE

Observations in Perseus,Spring 2002

The action of multiple outflows in NGC 1333?

SCUBA 850 mm Image shows Ndust (Sandell & Knee

2001)Dotted lines show CO

outflow orientations (Knee & Sandell 2000)

Perseus according

to IRAS (warm dust!)

QuickTime™ and aTIFF (LZW) decompressorare needed to see this picture.

COMPLETE: SCUBA>10 mag AV

2468

Perseus

Ophiuchus

10 pc

10 pc

Johnstone, Goodman & the COMPLETE team, SCUBA

2003(?!)

~100 hours at SCUBA

COMPLETE SCUBA-Prep led to

Discovery of a Heated Dust Ring in Ophiuchus

Goodman, Li & Schnee 2003

2 pc

…and the famous “1RXS J162554.5-233037” is right in the Middle !?

2 pc

The “COMPLETE” + c2d Truth about Star Formation, c.

2005

Statistical Evaluation of Outflows’ RoleEvaluation of Constructive/Destructive Role of

Explosions/Winds

Tracking down progeny (includes USNO-B work)

All data to NVO

Truth?: Part 1

Part II

Complications

Observing Biases

Temporal Behavior

Regional Variations

Temporal Evolution

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sun]

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Velocity [km s-1]

Power-law Slope of Sum = -2.7(arbitrarily >2)

Slope of Each Outburst = -2as in Matzner & McKee 2000

Example 1: Episodicity changes Energy/Momentum Deposition (time)

Example 2: (Some) Young stars may zoom through

ISM

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Mass

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Velocity [km s-1]

1. Episodic Outflows: Steep Mass-Velocity Slopes Result from Summed

Bursts

Power-law Slope of Sum = -2.7(arbitrarily >2)

Slope of Each Outburst = -2as in Matzner & McKee 2000

Arce & Goodman 2001b