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How Do Massive Stars Enrich the Interstellar Medium

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by Darren McKinnon on 16 October 2013

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Transcript of How Do Massive Stars Enrich the Interstellar Medium

Carina Nebula
Eta Carinae
Sources/Thanks
Theodore R. Gull - 1
Thomas I. Madura - 1, 3
Michael F. Corcoran - 4, 5
Mairan Teodoro - 1, 2
1 Astrophysics Science Division, Code 667, NASA GSFC, Greenbelt MD 20771, USA
2 CNPq / Science without Borders Fellow
3 NASA Postdoctroal Program Fellow
4 CRESST and Xray Astrophysics Labratory, Code 662, NASA GSFC, Greenbelt, MD 20771, USA
5 Universities Space Research Association, 10211 Wincopin Circle, Suite 500 Columbia, MD 21044, USA
6 Department of Physics, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA
7 NASA Educational Opportunities
SPS Summer Internship 2013
Darren McKinnon
Utah State University
How Do
Enrich the
MASSIVE STARS
INTERSTELLAR MEDIUM?
A Study of
Eta Carinae
My internship
as told in three parts...
The System
The Science
The Situation
What we're studying.
How we're studying it.
Where we are now.
Let's start with an overview...
The System
Mentor: Theodore R. Gull - NASA Goddard
The Homunculus
Eta Car
A Little History...
Around 1840, Eta Car had a bit of a
hiccup.
Then it had a smaller one around 1890.
Eta Carinae is...
Emission Lines, Spectra, and Datacubes
The Science
a massive interacting wind binary system.
Total system mass is more that 130x
the mass of the sun.
It is
FIVE MILLION
more luminous than the sun.
times
Space Telescope Imaging Spectrograph
Hubble Space Telescope
We've collected a number of datacubes
using the
aboard
.
What Do We Think Is Happening?
Carina Nebula - Visible Light :: ESO. Acknowledgement: VPHAS+ Consortium/Cambridge Astronomical Survey Unit
Carina Nebula Composite ::
Credit for Hubble Image: NASA, ESA, N. Smith (University of California, Berkeley), and The Hubble Heritage Team (STScI/AURA)
Credit for CTIO Image: N. Smith (University of California, Berkeley) and NOAO/AURA/NSF
So... how do we know this?
What did YOU do?
Where we are, and where we're going...
The Situation
Original
Reconstructed
PCA
The Question on Your Mind:
Argon
Nitrogen
[FeIII]
[FeII]
My Main Focuses
Subtractions
2012
2010
Data Subtraction
50 light years
Principle Component Analysis (PCA)
Iron
Kenji Hamaguchi - 4, 6
Lucy McFadden - 7
Mablelene Burrell - 7
SPS Summer Internship Staff
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