Two new super-earths: 61 Vir and HD1461 !!

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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Borislav on 12th May 2010, 4:45 pm

http://www.youtube.com/watch?v=qQr_VdBFz4U


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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Lazarus on 12th May 2010, 6:22 pm

Worth watching that one all the way through. Particularly regarding Gliese Not Revealed Yet, apparently they've got a nearby potentially-habitable planet...
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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by exofever on 13th May 2010, 5:56 pm

Gl436 is 33 ly away...

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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Sirius_Alpha on 19th May 2010, 3:25 am

exofever wrote:Gl436 is 33 ly away...

And its planet was discovered by Vogt et al at Lick, too. Gliese 436 is an interesting system and that may have earned it enough RV observations to allow for Lick to detect a low-mass planet.

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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Sirius_Alpha on 28th August 2011, 8:16 pm

Interesting paper on 61 Vir dynamics

Aligned Major Axes in a Planetary System without Tidal Evolution: The 61 Virginis example
http://arxiv.org/abs/1108.5369

Tidal damping of one of the orbits in a planetary system can lead to aligned major-axes (the so-called "fixed-point" condition), but currently aligned major axes do not necessarily imply such a history. An example is the nominal orbital solution for the 61 Virginis system where two orbits librate about alignment, but evaluation of the eigenmodes of the secular theory shows it could not be the result of tidal damping but rather of initial conditions. Nevertheless, the amplitudes of the eigenmodes suggest that this system may have undergone some degree of tidal damping.

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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Edasich on 12th September 2011, 10:56 am

Weird thing. EPE currently lists 604 exoplanets but apparently there is no planet removed. On the contrary

http://exoplanet.eu/star.php?st=HD+1461

There are now four planets with "d" and "e" labelled as unconfirmed, and a planet "c" not labelled. Does it imply a confirmation?
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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by tommi59 on 12th September 2011, 11:11 am

Yeah it looks very weird. When planet c with 0.11 AU was confirmed discovered ? http://en.wikipedia.org/wiki/HD_1461 ??http://exoplanet.eu/star.php?st=HD+1461?? somebody knows sth ?


Last edited by tommi59 on 12th September 2011, 11:17 am; edited 1 time in total
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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by tommi59 on 12th September 2011, 11:14 am

If this is confirmation of new planet(super earth 5.9 earth mass) around HD 1461 I was right thinking about this system Very Happy
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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by jyril on 12th September 2011, 4:04 pm

The new planet c is one of the planets published today.

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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Lazarus on 12th September 2011, 5:56 pm

Looks like this HD 1461 c is a new planet candidate, the original unconfirmed planet "c" us now renamed to "e"... will be interesting to see how this one works out, wonder if the HARPS data is able to refute these candidates or not...
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Re: Two new super-earths: 61 Vir and HD1461 !!

Post by Sirius_Alpha on 5th January 2017, 10:31 pm

In this paper, we find that Spitzer was used to search for transits of the planet, but none were found. They probability a transit was missed is 0.14%. They also comment on the RV dataset and solutions for the planet fits. They find three signals at 5.77, 13.5 and 377 days, as well as "a fourth low-frequency signal," but the 377 day signal is caused by a systemic effect from combining datasets.

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Re: Two new super-earths: 61 Vir and HD1461 !!

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