SuperWASP Results

WASP-43b: The closest-orbiting hot Jupiter

Hot Jupiter with a semimajor axis of 0.014 AU around a K7V star.

WASP-35b, WASP-48b and WASP-51b: Two new planets and an independent discovery of HAT-P-30b

More hot Jupiters. WASP-51b=HAT-P-30b.

At http://www.astro.keele.ac.uk/~ch/wasps.html the exoplanet candidate list is now extended up to WASP-52. However it's weird there is yet no announcement about WASP-9 (with a complete orbital solution if stellar binary) or WASP-20...

EPE claims WASP-9 was retracted September 17, 2009.

atomic7732 wrote:

EPE claims WASP-9 was retracted September 17, 2009.

He's looking for the stellar binary orbital parameters.

Edasich wrote:

However it's weird there is yet no announcement about WASP-9 (with a complete orbital solution if stellar binary)

WASP-12b apparently has a magnetic bow shock rather than a stream of matter falling onto the star. Nice to have evidence for magnetic fields on hot Jupiters...

News release
arXiv paper

Edasich wrote:

At http://www.astro.keele.ac.uk/~ch/wasps.html the exoplanet candidate list is now extended up to WASP-52. However it's weird there is yet no announcement about WASP-9 (with a complete orbital solution if stellar binary) or WASP-20...

And has been updated again. WASP-50 marked as submitted and now lists up to WASP-57

http://arxiv.org/PS_cache/arxiv/pdf/1105/1105.3179v1.pdf

Paper on ArXiv for 44,45,46.

lodp wrote:

http://arxiv.org/PS_cache/arxiv/pdf/1105/1105.3179v1.pdf
Paper on ArXiv for 44,45,46.

The paper has a very interesting discussion about the effects of modelling in slight eccentricities or imposing a circular orbit, and how it affects the planetary parameters as a whole.

Nice to see transiting planets in Sculptor and Indus, quite neglected sky fields.

Two Upper Limits on the Rossiter-McLaughlin Effect, with Differing Implications: WASP-1 has a High Obliquity and WASP-2 is Indeterminate
http://arxiv.org/abs/1106.2548

Quote :

We present precise radial-velocity measurements of WASP-1 and WASP-2 throughout transits of their giant planets. Our goal was to detect the Rossiter-McLaughlin (RM) effect, the anomalous radial velocity observed during eclipses of rotating stars, which can be used to study the obliquities of planet-hosting stars. For WASP-1 a weak signal of a prograde orbit was detected with ~2sigma confidence, and for WASP-2 no signal was detected. The resulting upper bounds on the RM amplitude have different implications for these two systems, because of the contrasting transit geometries and the stellar types. Because WASP-1 is an F7V star, and such stars are typically rapid rotators, the most probable reason for the suppression of the RM effect is that the star is viewed nearly pole-on. This implies the WASP-1 star has a high obliquity with respect to the edge-on planetary orbit. Because WASP-2 is a K1V star, and is expected to be a slow rotator, no firm conclusion can be drawn about the stellar obliquity. Our data and our analysis contradict an earlier claim that WASP-2b has a retrograde orbit, thereby revoking this system's status as an exception to the pattern that cool stars have low obliquities.

An Examination of Possible Gravitational Perturbations in the Transit Timing Variations of Exoplanet WASP-3b
http://arxiv.org/abs/1106.4312

Quote :

Maciejewski et al. (2010) claim to have detected a possible sinusoidal variation in the transit timing variations of exoplanet WASP-3b, which is currently the only known planet orbiting the star WASP-3. According to Maciejewski's analysis, this signal might be the consequence of gravitational perturbations caused by a hypothetical second exoplanet in the WASP-3 system. I report five transit timing measurements from the summer of 2010 which provide modest support for Maciejewski's proposed sinusoidal signal.

WASP-50b paper has appeared in the A&A forthcoming list.

Lazarus wrote:

WASP-50b paper has appeared in the A&A forthcoming list.

It's now on arXiv.
http://arxiv.org/abs/1108.2641

First TRAPPIST exoplanet results, Here talk about the WASP-54b AND WASP-55b planets (in prep)

http://www.planetarium.be/cg/files/Gillon2011.pdf

TRAPPIST-IR would be very interest searching for transits of terrestrial planets around ultracool dwarf

Update for WASP-13b: High precision transit observations of the exoplanet WASP-13b with the RISE instrument

Looks like the star is evolved, and the planet has a large radius anomaly.

Also, talking of SuperWASP... THIS is a super-wasp!

Lazarus wrote:

Also, talking of SuperWASP... THIS is a super-wasp!

Oooh I see...

So, when a new HATNet planet is released I guess we should tip our hats, right?

And when Corot does, to go straight visiting an Impressionist exhibition....

Let's keep this thread (almost) serious

Wasp 63b through 70b up on EPE - Must have been announced at the conference

Planetrs from the EPE mailing list:
WASP-20
WASP-42
WASP-47
WASP-49
WASP-52
WASP-53
WASP-54
WASP-55
WASP-56
WASP-57
WASP-58
WASP-59
WASP-60
WASP-61
WASP-62
WASP-63
WASP-64
WASP-65
WASP-66
WASP-67
WASP-68
WASP-69
WASP-70

Really not interesting all low dense hot jupiters or suturns no super earths planet from WASP

SuperWASP is a wide area search and is not designed to find small planets.

The astronomers seems to be in a news orgy in Wisconsin!!

It looks like a competition where each team shows off how many planets it's able to detect. Except for transiting planets, I wonder how many of them will pass the astrometry proof...

Can't be too long before we see WASP-100b...

These are from SuperWASP-South. Nice to see southern skied covered...