East-Asian Planet Search Network expands

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East-Asian Planet Search Network expands

Post by marasama on 14th November 2008, 6:58 pm

East-Asian Planet Search Network (EAPSN) expands there search with a site in Turkey.
Their primary targets are around intermediate size stars.
- The aurthor, Mr.Sato helped find HD 17156b.
- The EAPSN found the BD around 11 Coma.

We'll see if they can find anything else.

http://www.global-edge.titech.ac.jp/abst/abst_Sato.pdf

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Re: East-Asian Planet Search Network expands

Post by Edasich on 22nd November 2008, 5:06 pm

Taking a look at PASPJ website I found several interesting papers:

1) On the Period Variations of BH Virginis

As for several other RS CVn binaries so far, there would be the evidence of a third body with a period spanning between 9.2-11.8 years. Depending on inclination of the object it may turn out being either a brown dwarf (68 Mj) or a Jovian planet.

2) An Orbital Period Investigation of the W UMa-Type Binary Y Sextantis

A W-UMa type binary with third red dwarf component in (relatively) close orbit (roughly 16.1 AUs, e=0.52) with a possible fourth component with mass= 43 Mj laying at 58.9 AUs.
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Re: East-Asian Planet Search Network expands

Post by marasama on 22nd November 2008, 7:19 pm

Cool find.

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Re: East-Asian Planet Search Network expands

Post by Edasich on 23rd November 2008, 5:13 pm

Some add-ons:

HD 85444 (i.e Upsilon1 Hydrae) hosts a 55 Mj companion at 3.9 AUs (e=0.57).
Also the late G-giant HD 34559 (i.e 109 Tauri) hosts an even smaller one with only 16 Mj (likely a Superjovian planet) in 26 days orbit (assuming primary star's mass around 2.6 MSun).
Okayama Planet Search affirms.

Radial-Velocity Variability of G-Type Giants: First Three Years of the Okayama Planet Search Program
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