Outflows from Young Stars and the Interstellar Medium

3/15/00


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Table of Contents

Outflows from Young Stars and the Interstellar Medium

Star Formation v. 2000

Star Formation v. 2000: The Bare Essentials

How the Recipe Works

PPT Slide

How the Recipe Works

Do Outflows Ever žCreateÓ Cloud Structures? If so, how does this effect future star formation & the žclump mass spectrumÓ?

Radio Spectral-line Observations of Molecular Clouds

žOutflowÓ Spectra

žClumpÓ Mass Distribution

Keep in Mind...

Examples that might convince you that YSO Outflows Move More Gas than You Thought

žGiantÓ Herbig-Haro Flows: PV Ceph

Matching Ejection Angles (assumes episodic ejections from precessing or wobbling stationery source)

Matching Ejection Distance (preferred by Reipurth)

A New Proposal: Episodic ejections from precessing or wobbling moving source

žGiantÓ Herbig-Haro Flows

PV Ceph

žAmbientÓ Gas in PV Ceph

PV Ceph 12CO (2-1) Outflow Contours on 13CO (1-0) Map

Position-Velocity Diagram for PV Ceph Outflow

Zooming in on the žBlue LobeÓ of PV Ceph

PV C eph: CO (2-1) Spectra Near HH315 B

PV C eph: CO (2-1) Spectra Near HH315 B

PV C eph: CO (2-1) Spectra Near HH315 B

The žBlueÓ Lobe of the PV Ceph Outflow

Giant HH Flow: PV Ceph

2. The Effect of Outflows on their host Cores

The Effect of Outflows on their host Cores

B5 žLine Width-Intensity PlotÓ

The Effect of Outflows on their host Cores

B5-IRS 5: An žOutflowÓ Component?

3. Are Some Dark Clouds Created by Outflows?

HH300 & B18w in Taurus

The Taurus Dark Cloud Complex

4. How much of a molecular cloud complex was žmovedÓ to its present location by an outflow?

YSO Outflows Move More Gas than WeThought

Author: Alyssa A. Goodman

Email: agoodman@cfa.harvard.edu

Home Page: cfa-www.harvard.edu/~agoodman

Other information:
Presentation Delivered as B.U. Astrophysics Colloquium, March 13, 2000

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