David Zurek
I am a research assistant for Mike Shara at STScI. The specific studies
that we are involved with are the structure of nova shells, the discovery
of Dwarf novae in globular clusters, and the discovery of novae in other
galaxies. (I will explain what a nova and a dwarf nova are shortly.) Projects
that I'm involved with other people include the comparison of stellar
populations with theory and trying to understand why different globular
clusters that appear to be the same age contain differences. (I will explain
this shortly as well.)
A nova is a binary which has a white dwarf star and a companion that
is dumping material onto it. When enough material is dumped onto the white
dwarf the material explodes and gets ejected from the white dwarf. We
study this ejected material to try and determine just how much material
it takes for this explosion to take place and to determine how the eruption
itself effects the structure of the shell. A dwarf nova is similar but
instead of the eruption coming from the surface of the white dwarf it
occurs in a disk of material that is being created from the material stripped
off the companion. We're trying to find these objects in globular clusters,
which or clusters of stars that orbit around our galaxy, because there
are suppose to be lots of them there but as yet very few have been found.
Globular clusters themselves are interesting because they contain so many
stars that formed at the same time. This allows us to test theoretical
models of how stars evolve. However, globular clusters still have differences
that we can not explain and this is one of the areas which I am currently
exploring.
What I do is write proposals for telescope time (basically an application
form that is judged by other astronomers), observe at the telescope if
we are doing ground based observations, process the data, analyze and
model the data and finally to help write up our results for publication.
This whole process is fun and exciting but by far my favorite parts are
observing and the analysis and modeling. To me this is kind a like exploring
and I get excited every time I receive time on a telescope and when I
receive new data.
I guess I decided that I wanted to be an astronomer when I was about
12 or 13 years old. In grade 6 we did some reports on the solar system
and these got me very interested in astronomy. Science always interested
me but something about astronomy, I guess because it's such an unknown,
just excited me. I grew up in a small town (8000 people) in the mountains
of British Columbia, Canada and we didn't have too many things like science
centers or stuff like that (the closest big city is Vancouver which is
an 8 hour drive away). I did contact a professor at the local college
and he was kind a enough to take me and a couple of friends to use some
of the telescopes that the college had. One of the things I did do was
to write NASA a letter and they sent me catalogs and some information.
I also bought books and posters with the money I earned on my parents
orchard. I think watching the shows "Cosmos" and then buying the book
when a long way in furthering my interests. As I got older I got interested
in computers which has helped me greatly in my work.
The best thing about my job is the not knowing what I will find. Exploring
new areas of astronomy and trying to understand what we find is very exciting
and interesting to me. I guess one of my least favorite parts is in the
initial reduction or image processing of the data. It is completely necessary
but it is pretty much the same every time and for every new piece of data.
I guess it gets a little tedious.
I'm not sure I did anything special to prepare for my career. I read
lots of books on astronomy, such as Cosmos by Carl Sagan, and I watched
every show on PBS that had something to do with astronomy. I think today
things have become more competitive and I would suggest that someone who
wants to pursue a career in astronomy should study and math and physics
and just importantly should learn as much as they can about computers.
There are two people that had a very large influence on me and my eventual
success in this career. The first was a professor at a small college who
took me and my friends to the telescopes that the college owned and showed
us the planets and other interesting objects in the sky. He gave us books
to read and he helped us make a telescope. My friends and I would regularly
get together to look at the stars and watch a meteor shower like the Pleiades.
Later once I was at University a professor there hired me to assist him.
He encouraged my ideas and supported them as well. He then allowed me
to apply or telescope time and to conduct research that I was interested
in. These two people I owe a lot to and I will always be grateful to them
for the support that they have given me.
Personal Info: I am unmarried and have no children. I will probably
be getting a dog this year sometime. I played rugby for the University
of Victoria. I guess because I grew up in a place where wilderness is
abundant I enjoy hiking, camping and nearly everything associated with
the outdoors.
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