sukye

090605

Spitzer reborn
http://www.spitzer.caltech.edu/Media/happenings/20090528/
after 5.5 yr, run out of coolant, two shortest-wavelength detectors continue to function normally

Refined Hubble Constant Narrows Possible Explanations for Dark Energy
http://hubblesite.org/newscenter/archive/releases/2009/08/full/
SHOES (Supernova H0 for the Equation of State), Riess, H0=74.2 ± 3.6
Hubble observations of Cepheid variables in a nearby cosmic mile marker, the galaxy NGC 4258, and in the host galaxies of recent supernovae, directly link these distance indicators.

Using Spectral Flux Ratios to Standardize SN Ia Luminosities
http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:0905.0340
the flux ratio R(642/443) = F(642 nm) / F(443 nm) has a correlation of 0.95 with SN Ia absolute magnitudes.

090317

http://adsabs.harvard.edu/abs/2009ApJ…693.1610G
swift GRB 080913 z=6.7

090304

http://www.universetoday.com/2009/03/04/astronomers-detect-two-black-holes-in-a-cosmic-dance/
The material falling into a black hole emits light in narrow wavelength regions. The double set of broad emission lines is pretty conclusive evidence of two black holes. Todd Boroson and Tod Lauer from the National Optical Astronomy Observatory (NOAO).

http://www.scitech.ac.uk/PMC/PRel/STFC/UVOT.aspx
Swift Satellite records early phase of gamma ray burst, just 251 seconds after its onset.

http://www.sciencenews.org/view/generic/id/41302/title/Planet_hidden_in_Hubble_archives
Marois, Lafrenière and two collaborators reanalyzed the 11-year-old Hubble images of HR 8799. After subtracting the scattered starlight estimated from the new model, the astronomers recovered the outermost of the trio of planets recently imaged, the team reports online at arXiv.org (http://lanl.arxiv.org/abs/0902.3247)

http://www.nasa.gov/mission_pages/chandra/news/09-016.html
The pulsar, PSR J0108-1431 (J0108 for short) is about 200 million years old.it is over 10 times older than the previous record holder.

http://www.universetoday.com/2009/02/23/evidence-of-supernovae-found-in-ice-core-sample/
in 2001, a team of scientists from Japan drilled a 122 meter ice core sample in Antarctica. At a depth of about 50 metres, corresponding to the 11th century, they found three nitrogen oxide spikes, two of which were 48 years apart and easily identifiable as belonging to SN 1006 and SN 1054.

090207

FAST Guiyang 2014 <3 GHz
http://physicsworld.com/cws/article/news/37483
$102m facility, known as the Five-hundred-meter Aperture Spherical Telescope

http://www.universetoday.com/2009/01/28/global-warming-may-be-irreversible/
This is because the oceans are currently soaking up a lot of the planet’s excess heat, as well as some of the carbon dioxide from the atmosphere. The carbon dioxide and heat will eventually start coming out of the ocean. And that will take place for many hundreds of years. Susan Solomon

27 elliptical galaxies in the Virgo Cluster
http://astronomynow.com/090203supermassiveblackholesandgalaxiesevolvedtogether.html
John Kormendy Ralf Bender: the largest galaxies form as smaller systems collide; the black holes in the smaller galaxies then merge, forming a single more massive black hole at the centre of the combined galaxy. Thus the black hole subsequently grows along with the galaxy.

090120

http://astronomynow.com/090116_Massivestarssolved.html
Mark Krumholz: radiation pressure and gravitational attraction, instead of fighting one another, form ‘lanes’ like that for traffic going in different directions.

Black Holes Lead Galaxy Growth
http://www.nrao.edu/pr/2009/bhbulge/
“We finally have been able to measure black-hole and bulge masses in several galaxies seen as they were in the first billion years after the Big Bang, and the evidence suggests that the constant ratio seen nearby may not hold in the early Universe. The black holes in these young galaxies are much more massive compared to the bulges than those seen in the nearby Universe,” said Fabian Walter of the Max-Planck Institute for Radioastronomy (MPIfR) in Germany.

Blue Stragglers
http://www.scitech.ac.uk/PMC/PRel/STFC/stragglers.aspx
Two theories for Blue Stragglers were that blue stragglers were either created through collisions with other stars or that one star in a binary system was ‘reborn’ by pulling matter off its companion. Stellar cannibalism is key to formation of overweight stars.

http://www.ras.org.uk/index.php?option=com_content&task=view&id=1547&Itemid=2
Thomas Harriot was the first person to create drawings of the what the Moon looks like through a telescope, doing so months before Galileo.