32 planets from HARPS

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32 planets from HARPS

Post by Lazarus on 17th October 2009, 8:13 am

ESO to hold media conference to discuss significant exoplanet finding

On Monday 19 October 2009, astronomers will report at the international ESO/CAUP exoplanet conference in Porto, Portugal, on a significant discovery in the field of exoplanets, obtained with the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6-metre telescope.

Interestingly enough the SpaceRef version of this has a link to the arXiv paper about the discovery of Gliese 581e... maybe yet another planet in the system?

(Putting my moderator hat on here... please don't break any embargoes, it isn't that long until the actual announcement! Patience is a virtue and all that...)


Last edited by Sirius_Alpha on 29th August 2010, 8:26 pm; edited 2 times in total (Reason for editing : updated thread title)
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Re: 32 planets from HARPS

Post by Sirius_Alpha on 17th October 2009, 9:07 am

[uninformed speculation]

Being a live teleconference, I can't imagine they would announce e. Maybe such a Gliese 581 f is in the habitable zone? They sure do have a pretty suggestive picture at the SpaceRef site. Perhaps a five-planet fit to the Gliese 581 RV data can bring the eccentricity of d down to something resembling a circular orbit.

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Re: 32 planets from HARPS

Post by Edasich on 17th October 2009, 9:53 am

I hope not. I'm tired to update my Celestia version of GJ 581 system! *lol* Laughing

I hope it may be that earth-mass planet in the HZ around a solar-type star. That would be really interesting.
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Re: 32 planets from HARPS

Post by Sirius_Alpha on 17th October 2009, 1:05 pm

Maybe it's the GTO programme results? (please?) along with the significant discovery that 30% of solar-like stars host close-in exoplanets.

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Re: 32 planets from HARPS

Post by Stalker on 17th October 2009, 2:13 pm

May be it is the 5 planet system annonced in the topic about CoRoT?

Sirius_Alpha wrote:Nice catch, lodp!

Dr Mayor
described a system he has seen that has five rocky planets in it. They
have masses of 11, 14, 26, 27 and 76 times that of the Earth. He
concluded his talk by saying, “I am really confident that we have an
Earth-like planet coming in the next two years.”

Though
only one of those, to me, seems rocky (let's hope that the author just
forgot to put some periods between each number's digits) this is pretty
nice. Five planet system of all sub-Jovians?? No wonder the HARPS
results are taking ages. But that's Off Topic.

Sirius_Alpha:What is the GTO programme?
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Re: 32 planets from HARPS

Post by Lazarus on 17th October 2009, 2:50 pm

It specifically says this is a discovery obtained by HARPS, so it doesn't seem particularly likely that there is CoRoT involvement. The SpaceRef graphic is one of their standard ones they use when dealing with extrasolar planets, I wouldn't read too much into it.

I doubt this is going to be about the discovery of Gliese 581 e, as we've already had the media fanfare for that one.
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Re: 32 planets from HARPS

Post by Sirius_Alpha on 17th October 2009, 4:04 pm

Stalker wrote:Sirius_Alpha:What is the GTO programme?
Garunteed Time Observation. It's a high-precision search for low-mass planets around 451 stars. Rumors were that it's found 30-40 low-mass planets (sub-Jovian).
http://solar-flux.forumandco.com/extrasolar-news-and-discoveries-f2/many-new-harps-discoveries-t13.htm

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Re: 32 planets from HARPS

Post by Stalker on 18th October 2009, 5:38 am

http://www.astro.up.pt/investigacao/conferencias/toe2009/index.php?opt=programme
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29 new planets and 3 brown dwarfs !!!

Post by exoplanet on 19th October 2009, 7:55 am

Enjoy ....


29 new planets and 3 brown dwarfs (Delfosse et al. Forveille et al.,

Hebrard et al, Lo Curto et al, Mordasini et al, Naef et al.,

Santos et al. Segransan et al, submitted)

presented by Stephane Udry and Xavier Bonfils at the Porto Conference

"Towards Other Earths: perspectives and limitations in the ELT era" 19 Oct
2009.


Data below from Udry & Bonfils.


Note: The brown dwarfs HIP103019 b, HD85390 b and HD103197 b are not
included in the Exoplanet Catalog at http://exoplanet.eu


More details soon.


Jean Schneider



Data from Udry:



Id SP [Fe/H] log(R'_HK) Vsini Prot M1 P
M characteristic Author

[km/s] [d] [Msun] [d]
[MJ]

======== ===== ====== ========== ====== ===== ====== ====
==== ============== ======

HD5388 F6V -.27 -4.98 4.24 - 1.21 777
1.96 e2, deficient Santos et al.

HD181720 G1 -.53 -5.01 1.5 - 0.92 956
0.37 e4, deficient Santos et al.

HD190984 F8V -.48 -5.01 3.4 - 0.91 4885
3.10 e4, deficient Santos et al.

-----------------------------------------------------------------------------------------------------------------------

HD6718 G0 -0.06 -4.97 1.76 26 0.96 2496
1.56 e2 Naef et al.

HD8535 G0V 0.02 -4.95 1.41 13 1.13 1313
0.63 e2 Naef et al.

HD28254 G5V 0.36 -5.10 2.50 37 1.06 1117
1.16 e2, e unconstr. Naef et al.

HD290327 G5IV -0.11 -4.96 1.44 36 0.90 2443
2.54 e2 Naef et al.

HD43197 K0? 0.40 -5.06 2.18 44 0.96 327.8
0.60 e2 Naef et al.

HD44219 G5 0.03 -5.03 2.22 31 1.00 472
0.58 e2, curved drift Naef et al.

HD148156 G1V 0.29 -4.94 5.7 14 1.22 1010
0.91 e2, curved drift Naef et al.

HD156411 F8 -0.12 -5.05 3.3 22 1.25 842
0.74 e2 Naef et al.

HIP103019 K5 -0.30 - - - 0.70 917.6
52.6 e2, Brown Dwarf Naef et al.

-----------------------------------------------------------------------------------------------------------------------

HIP5158 b K5 0.10 -4.80 1.57 42 0.78 344
1.3 e2, curved drift Lo Curto et al.

HD125612 b G3V 0.23 -4.83 3.11 21 1.09
4.1547 0.067 e2, 3-pl system? Lo Curto et al.

HD125612 b previuosly known: Fischer et al 2007
ApJ 669 1336-

c 551.8
3.1

d 4613
7,1

HD215497 b K3V 0.23 -5.01 1.67 50 0.87 3.93
0.017 e2, 2pl-system Lo Curto et al.

c 567
0.33

-----------------------------------------------------------------------------------------------------------------------

BD-082823 b K3V -0.07 -4.8 1.4 37 0.74 5.60
0.045 e2(+Hipp), 2pl Hebrard et al.

c 237.6
0.33

-----------------------------------------------------------------------------------------------------------------------

HD85390 K1V -0.07 -4.91 1.12 40.1 0.76 781
45.3 e1 Mordasini et al.

HD90156 G5V -0.24 -4.90 0.33 24.0 0.84 49.8
17.5 e1 Mordasini et al.

HD103197 b K1Vp 0.21 -5.05 1.68 47.8 0.90 7.76
5.06 e2 Mordasini et al.

c 47.8
35.8

------------------------------------------------------------------------------------------------------------------------

HD9578 G1V 0.11 -4.66 1.64 12.3 1.12 494
0.62 e2, noisy, bis? Segransan et al.

HD63765 G9V -0.16 -4.75 1.63 26.0 0.86 356
0.69 e1, act, coralie Segransan et al.

HD104067 K2V -0.06 -4.78 1.61 36.9 0.79 55.8
0.16 e1, curved drift Segransan et al.

HD125595 K4V 0.02 -4.82 1.5 40.8 0.76 9.67
0.045 e2, act Segransan et al.

HIP70849 K7V - - 1.93 - 0.63 >3000
<blockquote type="cite">5 e2, P poorly cons. Segransan et al.

</blockquote>------------------------------------------------------------------------------------------------------------------------


Data from Bonfils (papers by Forveille et al. and Delfosse et al.,
submitted):


GJ 433 b M = 0.019 M_Jup P = 7 days

GJ 667C b 0.018 7

HIP 12961 b 0.47 57

GJ 676A b 4 1000

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Re: 32 planets from HARPS

Post by Edasich on 19th October 2009, 8:37 am

PLANET SPAAAAAM!!!! *LOL*


OMG, 29 planets in 1 day is just overwhelming.

But those are not from HARPS, are they?

However there is no article available yet...
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Re: 32 planets from HARPS

Post by Sirius_Alpha on 19th October 2009, 8:53 am

Wow nice! Planet spam is right!
That places us above 400 known exoplanets (402 for now), and places 2009 as the most productive year yet.

Edit: Unless I failed to get the time-zone conversion right, the news conference has already occurred, just before exoplanet's post. Maybe exoplanet's post is the significant announcement for today. I hope I'm wrong, I haven't looked at all 29 planets yet, but nothing there looks like it would immediately jump out as astounding and newsworthy.

Edit2: Good to see some nearby (20 - 30 LY) red dwarfs getting some planets.

Edit3: The new three-planet fit for HD 125612 looks unstable, with planet periods of 502 d, 551 d, and 4613 d.

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Re: 32 planets from HARPS

Post by Phill on 19th October 2009, 9:28 am

On 19 October 2009, at an international exoplanet conference, the team
who built the High Accuracy Radial Velocity Planet Searcher, better
known as HARPS, the spectrograph for ESO’s 3.6-metre telescope, reports
on the incredible discovery of more than 30 new exoplanets, cementing
HARPS’s position as the world’s foremost exoplanet hunter.
Check ESO:
http://www.eso.org/public/outreach/press-rel/pr-2009/pr-39-09.html

...
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Re: 32 planets from HARPS

Post by Sirius_Alpha on 19th October 2009, 9:35 am

So this is it? This is the results of the HARPS GTO programme?

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Re: 32 planets from HARPS

Post by exoplanet on 19th October 2009, 9:40 am

Yes, this is it.
I live in Porto, Portugal.
I am about 300m from CAUP but working and cannot attend the conference .... Sad

I received the text in the "exoplanet" mailing list from EPE.

Cheers

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Re: 32 planets from HARPS

Post by Sirius_Alpha on 19th October 2009, 9:58 am

I don't see how it could be though. Several (most) of the new planet hosts aren't in the GTO programme, and we were told that ~30 sub-Jovians had been found.

And sorry to hear, exoplanet v_v

Edit and clarification: My confusion isn't related to being bored by these new 29 planets, I'm quite amazed with them. I'm just having a hard time seeing how this is from the GTO programme.

Edit (can never have enough edits):

HD 85390 turned out to be 0.14 M_Jupiters. That's 30 planets today.

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Re: 32 planets from HARPS

Post by Borislav on 19th October 2009, 11:34 am

http://exoplanet.eu/planet.php?p1=HD+85390&p2=b
0.14 MJ
781 days
0.76 Msun

How much half-amplitude К m/s ?

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Re: 32 planets from HARPS

Post by Borislav on 19th October 2009, 11:40 am

Possible continuation of the holiday?

http://www.astro.up.pt/investigacao/conferencias/toe2009/index.php?opt=programme
Monday, 19th October
09:45 - 10:20IRRV planet search around solar-type stars: The HARPS GTO legacyS. Udry

11:20 - 11:45ITGJ 581, the M dwarf forerunnerX. Bonfils

15:45 - 16:00Ground Based Detection of Transiting Hot EarthsC. Burke


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Re: 32 planets from HARPS

Post by Sirius_Alpha on 19th October 2009, 12:07 pm

Borislav wrote:How much half-amplitude К m/s ?
Using those values, it would exert a semi-amplitude of K = 3.7 m/s.

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Re: 32 planets from HARPS

Post by Borislav on 19th October 2009, 12:18 pm

http://exoplanet.eu/planet.php?p1=GJ+676A&p2=b
massive giant in early red dwarf

http://exoplanet.eu/planet.php?p1=GJ+667C&p2=b
http://exoplanet.eu/planet.php?p1=GJ+433&p2=b
SuperEarth in red dwarf

http://exoplanet.eu/planet.php?p1=HIP+12961&p2=b
cool Jupiter in red dwarf. Perhaps future analog Gliese 876?

http://exoplanet.eu/star.php?st=BD-082823
http://exoplanet.eu/star.php?st=HD+215497
giants and SuperEarth

http://exoplanet.eu/planet.php?p1=HD+104067&p2=b
http://exoplanet.eu/planet.php?p1=HD+103197&p2=b
http://exoplanet.eu/planet.php?p1=HD+90156&p2=b
cool Neptune (SuperEarth)

http://exoplanet.eu/planet.php?p1=HD+85390&p2=b
ice 1.5 Neptune (!!!)

http://exoplanet.eu/planet.php?p1=HD+125595&p2=b
SuperEarth in Orange dwarf

http://exoplanet.eu/star.php?st=HD+125612
Two new planets (giants and hot SuperEarth) in the already well-known system

http://exoplanet.eu/planet.php?p1=HD+156411&p2=b
http://exoplanet.eu/planet.php?p1=HD+148156&p2=b
http://exoplanet.eu/planet.php?p1=HD+181720&p2=b
http://exoplanet.eu/planet.php?p1=HD+190984&p2=b
http://exoplanet.eu/planet.php?p1=HD+28254&p2=b
http://exoplanet.eu/planet.php?p1=HD+290327&p2=b
http://exoplanet.eu/planet.php?p1=HD+43197&p2=b
http://exoplanet.eu/planet.php?p1=HD+44219&p2=b
http://exoplanet.eu/planet.php?p1=HD+5388&p2=b
http://exoplanet.eu/planet.php?p1=HD+63765&p2=b
http://exoplanet.eu/planet.php?p1=HD+6718&p2=b
http://exoplanet.eu/planet.php?p1=HD+8535&p2=b
http://exoplanet.eu/planet.php?p1=HD+9578&p2=b
http://exoplanet.eu/planet.php?p1=HIP+5158&p2=b
http://exoplanet.eu/planet.php?p1=HIP+70849&p2=b
giant in wide orbit (HD 190984 - 4885 days in 3.1 MJ)

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Re: 32 planets from HARPS

Post by Borislav on 19th October 2009, 12:22 pm

Sirius_Alpha wrote:
Borislav wrote:How much half-amplitude К m/s ?
Using those values, it would exert a semi-amplitude of K = 3.7 m/s.
Thank you! I forgot how to count. This opens the way to the discovery of terrestrial worlds in stable stars!

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Re: 32 planets from HARPS

Post by Sirius_Alpha on 19th October 2009, 12:30 pm

Thanks for putting up all the links ^.^

Borislav wrote:This opens the way to the discovery of terrestrial worlds in stable stars!
Gliese 581 e exerts a K = 1.6 m/s signal =o.

Edit: regarding HD 125612 c, it lies more in the Neptune-mass range than the super-Earth range.
Edit2: Gliese 676 Ab, with a mass of 4 Jupiters, is the most massive planet yet detected around a red dwarf (unless you wish to count HD 41004 Bb).

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Re: 32 planets from HARPS

Post by Edasich on 19th October 2009, 1:25 pm

I'm still intrigued by the "MORE THAN 30 PLANETS". Are there other worlds to upcome?
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Re: 32 planets from HARPS

Post by Lazarus on 19th October 2009, 4:35 pm

Hmmm... clearly we've got to the stage where individual detections are not nearly so paper-worthy...

Sirius_Alpha wrote:Edit2: Gliese 676 Ab, with a mass of 4 Jupiters, is the most massive planet yet detected around a red dwarf (unless you wish to count HD 41004 Bb).
Or if you wish to count VB 10b...

Another point... press release mentions that "As with the previously detected super-Earths, most of the new low-mass candidates reside in multi-planet systems, with up to five planets per system." Whether this is a reference to 55 Cancri I don't know (it isn't entirely clear whether that last clause refers to just the new low-mass candidates or the previously-detected super-Earths as well)... certainly it doesn't seem like any of the new systems have more than 3 planets, but I guess we wait for the papers to come out.
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Re: 32 planets from HARPS

Post by lodp on 19th October 2009, 8:04 pm

Doesn't appear to be anything on arXiV for 20th October

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Re: 32 planets from HARPS

Post by Borislav on 20th October 2009, 12:05 am

Sirius_Alpha wrote:So this is it? This is the results of the HARPS GTO programme?

In GTO sample enter 4 stars, plus 4 red dwarf sample, rest similars

http://arxiv.org/abs/0704.0917
Another programme carried out by the HARPS-GTO is a lower RV precision planet search. It is a survey of about 850 Solar-type stars at a precision better than 3ms. The sample is a volume-limited complement (up to 57.5 pc) of the СORALIE sample (Udry et al. 2000). The goal of this subprogramme is to obtain improved Jupiter-sized planets orbital elements distributions by substantially increasing the size of the exoplanets sample. Statistically robust orbital elements distributions put strong constraints on the various planet formation scenarios.

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Re: 32 planets from HARPS

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