First Hubble press release of the year
The COSMOS project is a multi-wavelength survey of a 2 degree field, using, well, basically everything we got.
They have cool results.
Dynamics of Cats
Speculations on astronomy, astrophysics, news I find interesting, theoretical issues, science and science policy. I will digress into computational physics, science fiction and general issues and basically whatever I feel like whenever. And, of course, cats.
Search
Profile
Still working on an analytic exact approximate solution to the herding problem.
Recent Posts
- Taxing the Hidden Economy
- lateral thinking on your toes
- proposal invariance
- deCode deFunct
- Kepler Live Pool
- Water on the Moon
- SN 0.Ia
- Cash for Grades Scandal
- Great Observatories View of the Milky Way Centre
- 11/11
Recent Comments
- Craig Heinke on Taxing the Hidden Economy
- Phillip IV on Taxing the Hidden Economy
- Robert on lateral thinking on your toes
- Robert on lateral thinking on your toes
- Steinn Sigurdsson on lateral thinking on your toes
- speedwell on lateral thinking on your toes
- Feyzullah on lateral thinking on your toes
- Vagueofgodalming on lateral thinking on your toes
- Undergrad on lateral thinking on your toes
- Lab Lemming on Kepler Live Pool
Archives
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- January 2009
- December 2008
- November 2008
- October 2008
- September 2008
- August 2008
- July 2008
- June 2008
- May 2008
- April 2008
- March 2008
- February 2008
- January 2008
- December 2007
- November 2007
- October 2007
- September 2007
- August 2007
- July 2007
- June 2007
- May 2007
- April 2007
- March 2007
- February 2007
- January 2007
- December 2006
- November 2006
- October 2006
- September 2006
- August 2006
- July 2006
- June 2006
- May 2006
Blogroll
-
Scientists:
- Cosmic Variance
- Thorsett
- Real Climate
- Panda's Thumb
- Information Processing
- Systemic
- Leaves on the Line
- Backreaction
- Bad Astronomy
- Angry Physics
- Diffraction Spikes
- Matt McIrvin's Steam-Operated World of Yesteryear
- Powers of Four
- JDUB
- Astro Babe
- Nuclear Mangos
- Professor Astronomy
- Astroprof
- Mostly Harmless
- XSPECtor
- Cocktail Party Physics
- Life as a Physicist
- Hogg's Research
- reference frame
- Galaxy Girl
- Babe in the Universe
- Arcane Gazebo
- Science and Reason
- Jeff Master's WunderBlog
- shtetl-optimized
- Asymptotia
- Obscured by Clouds
- The Orgiastic Future
- Incoherent Ponderer
- Astro Dyke
- Non-Commutative Geometry
- Not Even Wrong
- Female Science Professor
- nanoscale views
- Mars Gets Women
- Dr Science
- Superwinds
- e-Astronomer
- In the Dark
- Only In It For The Gold
- The Astrobiology.Network
- The Planetary Society Blog
- Random Thoughts of an Astro Major
- The Stay at Home Scientist
- The Beagle Project
- Universe Today
- World Science
- Dr Pion
- Lab Lemming
- PhysioProf
- GLAST blog
- Chandra blog
- NASA blogs
- Cosmic Diary Academics:
- Crooked Timber
- Bérubé
- deLong
- Calculated Risk
- Conscience of a Liberal
- Bitch PhD
- The Angry Professor
- Barely Tenured
- Average Professor
- Sexy Science
- Learning Curves
- My Corner of the Universe
- OCC World:
- Lára Hanna
- Iceland Weather Report
- Eyþór Arnalds
- Making Light
- Contrary Brin
- antipope - Charlie Stross
- Whatever - Scalzi
- Early Days of a Better Nation - Ken MacLeod
- NASAwatch
- Eschaton
- DailyKos
- Firedoglake
- Informed Comment
- Fistful of Euros
- No Quarter
- Yorkshire Ranter
- Black Five
- My Left Wing
- Glenn Greenwald
- Hullabaloo
- TPM
- A New Wind
- Moffett Users
- Transterrestrial Musings
- Guardian NewsBlog Web: Links under construction...
- ADS
- Astronomy Meetings Galore
- technorati
- Billy Bragg
- InsideHigherEd
- Stjörnuskoðun
- Icelandic Music
- The Half Man Half Biscuit Lyrics Project
- Iceland Guide
- xkcd
- Piled Higher and Deeper
- Boing Boing ScienceBlogs:
- One Blog to Rule Them All:
- Principles
- Quantum Pontiff
- Science after Sunclipse
- Built on Facts
- Starts With a Bang
- Green Gabbro
- Stoat
- Aetiology
- Effect Measure
- A Clock Around the Blog
- Evolgen
- Adventures in Ethics and Science
- Scientific Activist
- Good Math, Bad Math
- Living the Scientific Life
- Retrospectacle
- Meta π
- Bioephemera
- Gene Expression
- Drug Monkey
--------
---------
-----
----
----------
Other Information
So you want to be an astrophysicist?
Random info.
The Old Dynamics of Cats blog
Old Favourites:
- Global warming on Mars? (or here, here, or here)
- WMAP for Dummies
- Fractal Dust, LEDs and Cracks in the Cosmos
- On The Proper Subject Order in High School
- Iranian Nukes: Plain Language version
- Imminence of the Eschaton
- Chasing the wrong variable
- Triumph of Evil
- Getting cold gets you colds
- What to do...
- Hæstaréttarmálaflutningslögmannsvinnukonuútidyralyklakippuhringurinn
- Bird 'flu for theorists
- The More You Write, The More You Write...
- King of Tambora
- Goethe's Revenge
- Food for Fighting - in praise of Skyr
- Is this going to be on the test?
| Blog: |
| Dynamics of Cats |
Topics: |
| Astronomy, Science, Random |
« Master of the Chair dies | Main | Peroxide wash on Mars »
COSMOS - AAS press
Category: astro
Posted on: January 8, 2007 12:41 PM, by Steinn Sigurðsson
Share this: Facebook Twitter Stumbleupon Reddit Email + More
TrackBacks
TrackBack URL for this entry: http://scienceblogs.com/mt/pings/29926
Comments
I wonder where the colors come from? The ACS data was a single orbit in F814W. The colors must come from the ground, (which may explain why all of the galaxies seem to have a single color.)
It would be nice if someone could do something scientifically interesting with their dark matter map.
Posted by: Brad Holden | January 8, 2007 1:55 PM
The COSMOS survey is very, very scientifically interesting. It shows large clumps of dark mass in regions of no visible matter. This may indicate that the "voids" seen between galaxies are not empty. This could be a huge amount of mass, enough to cast doubt on counts of "dark" stuff.
"The existence of large clumps of isolated dark matter and visible matter flies in the face of everything we know," says cosmologist Carlos Frenk of the University of Durham, UK.
"There are plausible explanations for small areas of dark matter and visible matter existing in isolation," NATURE continues, "but these theories can't explain the large features visible on the COSMOS map."
Someone predicted this in a paper posted back in '004.
Posted by: Louise | January 8, 2007 6:44 PM
Obviously I need to make myself clearer.
Massey has been discussing this mass map for a few months now. At no point have I heard a discussion of the significance of the detection of the mass with no light associated. In fact, in the paper, the authors argue that it could be a problem with their data, as these measurements are very difficult to do.
Second, there appear to be baryons without any mass. Weak lensing smooths in the plane of the sky with a pretty large kernel. This could easily merge together smaller mass lumps into one average lump at the wrong place. So, I am suspicious of results low mass overdensities. Clusters, such as the bullet cluster, are much easier as the signal is an order of magnitude stronger.
Of course, I could be overly critical. Letters to Nature are very frustrating in this regard as it is nearly impossible to explain enough about the data, even with the Supplemental materials.
Posted by: Brad Holden | January 8, 2007 9:35 PM