Antarctic Astrophysics
PLATO at Dome A
PLATO is a fully-autonomous site-testing
and astrophysical observatory at Dome A, the highest
point on the Antartic plateau. I'm a collaborator on
two of the instruments: preHEAT, a submillimetre-wave
tipper/telescope, and Gattini-Dome A, a pair of
optical sky cameras.
The Lagoon Nebula, M8
The Lagoon Nebula is region of massive
star formation about 1.3kpc away (about
4000 light-years), in the Sagittarius-Carina
arm of the Milky Way, more-or-less along the
line of sight between us and the Galactic
Centre. With new stars forming
in several clusters, scattered through the
Nebula, the whole structure is quite similar
to the complex of molecular gas, young star
clusters, protostars and nebulae in Orion.
It's not nearly as well-known as Orion
because:
- It's further away, so fainter,
and it's more difficult to resolve
structure
- It's far enough south in the sky
(at a declination of about -24 degrees)
that it's not easy to observe with
telescopes in the northern hemisphere
- Orion sticks out of the Galactic
plane, making it very prominent; M8 is
close to the plane, and projected onto the
brightest parts of the Milky Way, so it's
not as obvious
I started observing the Lagoon Nebula
as a graduate student, and have kept doing
so ever since. I've been involved with
submillimetre-wave, infrared and X-ray
observations.
Review Article
I recently wrote a review of the current
state of our knowledge of the region. As far as I
know, this is the first time that the Lagoon has
been reviewed, although a more limited one (covering
only the large HII region) was published in the 70s.
The review will be a chapter in the (imminently
forthcoming) Handbook of Star Forming Regions (Vol II,
The Southern Sky), edited by Bo Reipurth and
published by the Astronomical Society of the Pacific.
You can find a preprint on my
publications page