Kepler-9: TTVs with two Saturns and a hot Super Earth

Page 1 of 2 1, 2  Next

View previous topic View next topic Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Sirius_Alpha on 23rd August 2010, 7:28 pm

http://www.spaceref.com/news/viewpr.html?pid=31483

WASHINGTON -- NASA will hold a media teleconference Thursday, Aug. 26, at 1 p.m. EDT to discuss the Kepler spacecraft's latest discovery about an intriguing planetary system

_________________
Caps Lock: Cruise control for 'Cool'!

Sirius_Alpha
Admin
Admin

Number of posts : 3374
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by tommi59 on 24th August 2010, 1:31 pm

Next planetary system with couple of neptunes this time transiting??

tommi59
Jovian
Jovian

Number of posts : 517
Age : 39
Location : Baile Atha Cliath
Registration date : 2010-07-31

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Lazarus on 24th August 2010, 1:38 pm

I'd guess it's going to be something along the lines of a confirmed multi-transit system or a confirmed case of transit variations. "Exotics" like circumbinary planets or exomoons would be interesting but I somehow doubt it...

Lazarus
dG star
dG star

Number of posts : 2739
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by tommi59 on 24th August 2010, 4:03 pm

Exomoon?? It would be amazing to discover such body,in my opinion such discovery will not be earlier than 2012

tommi59
Jovian
Jovian

Number of posts : 517
Age : 39
Location : Baile Atha Cliath
Registration date : 2010-07-31

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 25th August 2010, 4:04 am

Lazarus wrote:I'd guess it's going to be something along the lines of a confirmed multi-transit system or a confirmed case of transit variations. "Exotics" like circumbinary planets or exomoons would be interesting but I somehow doubt it...

Сircumbinary planets very probable.

http://www.spaceref.com/news/viewpr.html?pid=31483
-- Alycia Weinberger, astronomer, Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington

http://arxiv.org/find/all/1/all:+AND+Alycia+Weinberger/0/1/0/all/0/1

Most of its publications about formation planet around binary stars.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Edasich on 26th August 2010, 11:34 am

WASHINGTON -- NASA will hold a media teleconference Thursday, Aug. 26, at 1 p.m. EDT to discuss the Kepler spacecraft's latest discovery about an intriguing planetary system

Any update?

Edasich
dM star
dM star

Number of posts : 1494
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Sirius_Alpha on 26th August 2010, 11:52 am

Unless I'm in a time warp or can't convert time zones, not for another 1 hour and 8 minutes or so.


Last edited by Sirius_Alpha on 18th June 2011, 2:20 am; edited 1 time in total (Reason for editing : Wording)

_________________
Caps Lock: Cruise control for 'Cool'!

Sirius_Alpha
Admin
Admin

Number of posts : 3374
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Edasich on 26th August 2010, 11:55 am

It's I'm just confused by time zones. Don't know if referred to Europe or USA.
But you gave me a useful reference so, let's wait Wink

Edasich
dM star
dM star

Number of posts : 1494
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Lazarus on 26th August 2010, 1:13 pm

Well it is up on the front page of the NASA website...

Two transiting giant planets around the same star, unconfirmed inner transiting super-Earth.

Lazarus
dG star
dG star

Number of posts : 2739
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 1:27 pm

A more detailed source
http://cosmiclog.msnbc.msn.com/_news/2010/08/26/4974937-planets-clockwork-goes-crazy

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 1:36 pm

http://www.cfa.harvard.edu/news/2010/pr201013.html

Both are Saturn-sized gas giants, with the inner world weighing in at 0.25 Jupiter mass (80 Earths) while the outer world is a slimmer 0.17 Jupiter mass (54 Earths).

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Lazarus on 26th August 2010, 2:00 pm

So multiple transiting planets AND detected transit timing variations. Nice.

Lazarus
dG star
dG star

Number of posts : 2739
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 2:11 pm

But in general have been disappointing. Probably the confirmation process is very difficult.
Even in such a high-priority system was not successful confirm yet to the super-earth (with a period of only 1.5 days).

http://kepler.nasa.gov/news/mmu/index.cfm?FuseAction=ShowNews&NewsID=55
So far the FOP has obtained images of over 400 Kepler stars. So far, many hundreds of images and over 700 spectra have already been taken of the Kepler planet candidates.

Perhaps 700 of these spectra, most reconnaissance (the first 1-2 spectra). Therefore, very few planets will be announced in 2010.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 2:24 pm

http://kepler.nasa.gov/Mission/discoveries/
Kp=13.308
Suffice dim star.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 2:27 pm

The error in measuring the mass of only 0.013 mass of Jupiter. Strange that it was not enough to determine the mass of the inner planet.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by tesh90 on 26th August 2010, 2:38 pm

it seems to be 2 transiting saturns/jupites and a potential 1.5x hot super earth...

tesh90
Meteor
Meteor

Number of posts : 27
Registration date : 2008-06-16

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by tesh90 on 26th August 2010, 2:39 pm

sorry, reference is nasawatch.com

tesh90
Meteor
Meteor

Number of posts : 27
Registration date : 2008-06-16

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 3:03 pm

http://www.sciencemag.org/cgi/content/abstract/science.1195778
Six radial velocity observations show that these two planets are the most massive objects orbiting close to the star and substantially improve the estimates of their masses.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 3:55 pm

In general, the data Kepler for the first month already have at least 2 three-planetary candidate. Nice.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Sirius_Alpha on 26th August 2010, 4:22 pm

A post from the Centauri-dreams blog reports the system is in resonance.
http://www.centauri-dreams.org/?p=14108

_________________
Caps Lock: Cruise control for 'Cool'!

Sirius_Alpha
Admin
Admin

Number of posts : 3374
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Borislav on 26th August 2010, 5:00 pm

hmm...

http://www.sciencemag.org/cgi/content/abstract/science.1195778
Received for publication 28 July 2010. Accepted for publication 19 August 2010.

Hence, these results were obtained more than 1 month ago? Then, probably a mass of third planet can already identify.

Borislav
Jovian
Jovian

Number of posts : 556
Registration date : 2008-11-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by tommi59 on 26th August 2010, 5:56 pm

I think they did but maybe are other reason why they wait to confirm it another body in the system??However I am very disappointed that only 2 planets announced.I expected something more than saturn type bodies

tommi59
Jovian
Jovian

Number of posts : 517
Age : 39
Location : Baile Atha Cliath
Registration date : 2010-07-31

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Lazarus on 26th August 2010, 6:44 pm

I don't get why this is regarded as so disappointing. This discovery should allow precise determination of the parameters of a resonant extrasolar system. Especially with the potential super-Earth in there, I'm going to guess this is going to be a valuable data point in the comparison of the mass-radius relationship at the same stellar metallicity.

The nature of missions like Kepler means that there are always going to be far more unconfirmed candidates (KOI nnn.pp) than confirmed planets (Kepler-nn). Expecting hundreds of confirmed planets is unreasonable.

Lazarus
dG star
dG star

Number of posts : 2739
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Sirius_Alpha on 26th August 2010, 9:54 pm

Indeed, this is a great discovery. I think the reason people are dissapointed is that they allow their hopes and expectations to be inflated into the realm of "unrealistic" by sensationalist reportings. "Kepler, the spacecraft built to look for Earths, to announce big news today" instead of "Kepler team to announce interesting planetary system find."

Here's a paper on ArXiv.
http://arxiv.org/abs/1008.4393

_________________
Caps Lock: Cruise control for 'Cool'!

Sirius_Alpha
Admin
Admin

Number of posts : 3374
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by tesh90 on 27th August 2010, 2:29 am

Also, wrt this being not disappointing, isn't this first case of TTVs?

Supercool discovery for me!

tesh90
Meteor
Meteor

Number of posts : 27
Registration date : 2008-06-16

View user profile

Back to top Go down

Re: Kepler-9: TTVs with two Saturns and a hot Super Earth

Post by Sponsored content Today at 9:04 am


Sponsored content


Back to top Go down

Page 1 of 2 1, 2  Next

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum