MEarth-1b?

Page 2 of 2 Previous  1, 2

View previous topic View next topic Go down

Re: MEarth-1b?

Post by Stalker on 18th December 2009, 3:04 am

Thanks Sirius_Alpha
avatar
Stalker
Jovian
Jovian

Number of posts : 526
Age : 26
Location : Paris, France
Registration date : 2008-06-16

View user profile http://exoplanetes.wetpaint.com/

Back to top Go down

Re: MEarth-1b?

Post by Edasich on 18th December 2009, 9:24 am

Indeed from effective temperature and radius value, the host star looks like Proxima Centauri and it could then turn out an M5/6V dwarf.
avatar
Edasich
dM star
dM star

Number of posts : 1510
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

View user profile

Back to top Go down

Re: MEarth-1b?

Post by AVBursch on 18th December 2009, 9:53 am

The discovery of Gliese 1214b is a very strong indication that the discovery of an Earth-mass exoplanet around a main sequence star is just around the corner. Gliese 1214 is likely a M6V dwarf with a mass of 164 Mjup. Astronomers were able to get good quality radial velocity data on Gliese 1214, allowing for a measurement of the planet's mass. An Earth-mass planet is detectable around a star of the size of Glise 1214 through the radial velocity method with today's technology of the planet is within 4.8 million km (3 million miles) of the star. It's definitely worth checking Gliese 1214 for additional planets, and there is room for an Earth-mass planet in the star's habitable zone.

AVBursch
Meteor
Meteor

Number of posts : 18
Registration date : 2009-05-01

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Lazarus on 18th December 2009, 3:35 pm

The idea that the thick atmosphere is produced from outgassing of a rocky planet is an interesting one as it suggests a much lower upper mass limit for planetary habitability than the limit beyond which hydrogen is accreted directly from the protoplanetary disc: the hydrogen envelope of the Earth probably was lost fairly rapidly, but more massive planets would outgas thicker atmospheres and lose them slower, leading to more extreme surface conditions, perhaps above the critical pressure for water.
avatar
Lazarus
dG star
dG star

Number of posts : 2819
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Zazaban on 20th December 2009, 2:39 am

I know it's probably an error, but the idea of a planet covered entirely in superwater intrigues me immensely.

Zazaban
Micrometeorite
Micrometeorite

Number of posts : 8
Registration date : 2008-11-10

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Edasich on 20th December 2009, 5:14 am

Zazaban wrote:I know it's probably an error, but the idea of a planet covered entirely in superwater intrigues me immensely.

Oh, Zazaban, welcome back! Very Happy

Well, a similar model with supercritical ICE has been proposed for GJ 436 b, if I remember correctly.
avatar
Edasich
dM star
dM star

Number of posts : 1510
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Zazaban on 20th December 2009, 5:05 pm

Edasich wrote:

Oh, Zazaban, welcome back! Very Happy

Thank you, I didn't think anybody would remember me! Very Happy

Zazaban
Micrometeorite
Micrometeorite

Number of posts : 8
Registration date : 2008-11-10

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Lazarus on 8th January 2010, 2:08 pm

The Nature of the Atmosphere of the Transiting Super-Earth GJ 1214b

Predicting the observational effects of various atmospheric compositions on GJ 1214b and how to detect them.
avatar
Lazarus
dG star
dG star

Number of posts : 2819
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Stalker on 1st March 2010, 3:59 pm

MEarth-2b?
Another slightly larger super Earth was found by the Mearth project”:
M ≈ 10 Mearth
R ≈ 2 Rearth
Orbiting a red dwarf star.
Density like Neptune or “icy moons”
Thanks to Borislav

http://sci.esa.int/science-e/www/object/.../object/doc.cfm?fobjectid=46537
avatar
Stalker
Jovian
Jovian

Number of posts : 526
Age : 26
Location : Paris, France
Registration date : 2008-06-16

View user profile http://exoplanetes.wetpaint.com/

Back to top Go down

Re: MEarth-1b?

Post by Lazarus on 1st March 2010, 4:29 pm

I suspect that refers to MEarth-1b with preliminary parameters but I have no idea when that document was published... haven't been able to find a link to it on the esa website directly because frankly that site is an impossible-to-navigate mess.
avatar
Lazarus
dG star
dG star

Number of posts : 2819
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Sirius_Alpha on 1st March 2010, 4:40 pm

I was thinking much the same thing about the esa website trying to find the paper. =\

_________________
Caps Lock: Cruise control for 'Cool'!
avatar
Sirius_Alpha
Admin
Admin

Number of posts : 3468
Location : Earth
Registration date : 2008-04-06

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

Back to top Go down

Re: MEarth-1b?

Post by Borislav on 1st March 2010, 4:48 pm

http://sci.esa.int/science-e/www/object/.../object/doc.cfm?fobjectid=46537
> 1130 days in Space

http://smsc.cnes.fr/COROT/
COROT spacecraft is in orbit since 1160 days

Presentation dates from the beginning of February 2010?

Borislav
Jovian
Jovian

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

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Stalker on 8th March 2010, 1:50 pm

Density like Neptune or “icy moons”

WTF???

I have calculate the density of MEarth-2b with 10 M_E and 2R_E and I have found ~6906 SI... More dense than the Earth! Nothing like ice giants or icy moons!
avatar
Stalker
Jovian
Jovian

Number of posts : 526
Age : 26
Location : Paris, France
Registration date : 2008-06-16

View user profile http://exoplanetes.wetpaint.com/

Back to top Go down

Re: MEarth-1b?

Post by Lazarus on 8th March 2010, 3:04 pm

I think that's more evidence that this is GJ 1214b they are referring to...
avatar
Lazarus
dG star
dG star

Number of posts : 2819
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: MEarth-1b?

Post by Sponsored content


Sponsored content


Back to top Go down

Page 2 of 2 Previous  1, 2

View previous topic View next topic Back to top


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