PDA

View Full Version : Wobble Test on Orions's Belt cluster



avenger
2002-Jan-14, 07:37 PM
Does anyone know if they did a wobble test on any of the stars in orion?

you know -- looking for planets?

tia

The Bad Astronomer
2002-Jan-14, 08:18 PM
From the list onExtrasolar Visions (http://www.jtwinc.com/Extrasolar/starlist.asp?StarcatID=normal), it doesn't look like it.

Note that the stars being searched tend to be sunlike, but the bright stars in Orion tend to be much hotter and bigger then the Sun, so they aren't being searched right now. I imagine that in time, every bright star in the sky will be observed.

Chip
2002-Jan-14, 10:17 PM
Back in March of last year the news services carried some stories of so called Free Floating Planets in Orion (http://news.bbc.co.uk/hi/english/sci/tech/newsid_686000/686800.stm). It would probably be Bad Astronomy to think of them being anything like the planets in our solar system. Perhaps they're somewhat akin to larger-than-Jupiter spheres that don't generate enough heat to become stars? They aren't orbiting stars so the wobble technique doesn't apply.

<font size=-1>[ This Message was edited by: Chip on 2002-01-14 17:17 ]</font>

avenger
2002-Jan-15, 11:51 AM
Thanks for the info -- and a new link to add to my Bad Astronomy folder!

amstrad
2002-Jan-15, 02:33 PM
On the site that the BA provided, Orion Nebula Proplyd Disks (http://www.jtwinc.com/Extrasolar/planet.asp?PlanetID=75) are listed under Protoplanets and Protoplanetary Disks (http://www.jtwinc.com/Extrasolar/starlist.asp?StarcatID=proto). Not planets yet, but just wait a "few" years.

Matherly
2002-Jan-15, 02:47 PM
Well, we havn't found it yet.

But I'm waiting for the discovery of a small planet somwhere in the vicinity of Betelgeuse /phpBB/images/smiles/icon_wink.gif