I though Perlmutter's Supernova Cosmology Project was first, follwed shortly by Schmidt's High-Z SN Search group.

It was February 26th, 1998 (or the 27th). Alex Filippenko (CfA High Z team) spoke at the UCLA Dark Matter meeting. "Alex said clearly that our supernovae provided evidence that cosmic expansion had sped up during the last 5 billion years" said Robert Kirshner in his marvelous book - the Extravagant Universe.

This was before Saul Perlmutter's team news, though they had 40 supernova to CfA's 27 (14 of CfA plus 13 from Calan/Tololo).

The difference that gave the CfA team the edge, assuming I understand it, was their implentation of MLCS (multicolor light-curve shape). Using mulitiple color filters helped them deal with issues such as dust. Hence the reason I asked the colorful question in the first place. Sort of a pattern I seemed stuck on lately :-? .

This greatly reduced their scatter from 40% to 15% which is a great advantage in improving the Gaussian sigma value. As I understand, it improves it as a squared value (about 9 in this case).

Of course, they did many other things to help their program including swimming in the shallow end of the pool (using Kirshner's analogy for nearby supernova) instead of the deep end. Learning to pull out Type 1b SN, knowing the brighter Type Ia dim slower than the weaker Type Ia, etc. were certainly major factors, too. However, these did not involve color so I consider them secondary. :wink: [I feel obliged to enhance everyones appreciation for color in order to awakedn your interest in - The Quest for the Color of the Sun! ] [Not really, but I have enjoyed the mild frolic ]

CfA ~ Center for Astronomics at Harvard, IIRC.

__________________
Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

Hold it. So your answer was wrong... [-X . I am not the only one having trouble with this one apparently. There should be a simple catalog list of 6 to 7 mag. stars but I can't find one.

There should be a supernova reasonably soon in the Milky Way (or satellite cloud or dwarf being consumed). Can you hold your question till then?

I must ask.....what color is it? :P

__________________
Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.

Considering its distance is estimated at 10,000 parsecs (I thought 32,616.3 LY sounded familiar ), it is not surprisingly a blue-white supergiant. It has both Bayer and Flamsteed designations.

Whether it actually is that far away is another matter, however. I certainly don't trust Starry Night or Redshift 4 that much.

__________________
- Learn a lot teaching others.

===

Download the SQL version for Celestia which allows you to search any criteria in the Starbase (<--New word for the day).

Load up the 12+ million star catalogue of coarse.

__________________
http://boincwapstats.sourceforge.net.../style:2/p.png

Hi folks -
it appears our quiz has gone a little stale over tha past two days, as nobody was able to anser Eroica's question about the most distant visible star. :-k

Maybe someone will come up with the answer one of these days, after installing and looking up the latest catalogues. I suggest in the meantime we move on. This quiz is too much fun to stop. 8)

What do you think about this one: Which body in the Solar system has the highest overall albedo?

__________________
Non sunt multiplicanda entia praeter necessitatem.

the sun

ok that doesn't make sence...

venus?

__________________
If this writing is blue you're going too fast!

Venus? Or is there a moon that's "brighter"?

Psi-less

__________________
"Given only the ships and right sails for the heavenly space, there will also be men unafraid of the terrible distances."--Kepler, to Galileo

Brightest albedo: Guessing off the top of my head Venus

__________________
By asking questions we sometimes get the wrong answers, from wrong answers we learn to ask the right questions.

I said it first- but I bet it turns out to be some obscure moon of neptunes...

__________________
If this writing is blue you're going too fast!

Nope, nope, nope, and nope. 8).

Some sources name Venus, but there is at least one body whose albedo exceeds Venus's 0.79.

__________________
Non sunt multiplicanda entia praeter necessitatem.

well Enceladus would be my next guess- it seems quite flashy

__________________
If this writing is blue you're going too fast!

=D> =D> =D>

Your go!

__________________
Non sunt multiplicanda entia praeter necessitatem.

Easy one clear! gtg and observe!

what does mimas resemble

__________________
If this writing is blue you're going too fast!

Oh, but we had that! The death star!

__________________
Non sunt multiplicanda entia praeter necessitatem.

ohhhhhhhhhhhhhhhhhhh

opps

well YOu've got it anyway

btw I made a quick page on it

www.scotsons-shack.com/mimas.htm

__________________
If this writing is blue you're going too fast!

Nice page, mickal!

Fun to have the quiz going again. Another quick and easy: Which star is a binocular-resolved double whose components turn out (by moderate telescope) to be doubles again?

Well-known constellation, up in the night sky at this time of the year (in both hemispheres, I think.)

__________________
Non sunt multiplicanda entia praeter necessitatem.

Epsilon Lyrae, the Double-Double?

Chi² Orionis was the answer.

__________________
- Learn a lot teaching others.