Talk:Doppler spectroscopy

message: Hey Dan.  So this is where I'm going to communicate to you about the changes that I'm making to your Footnotes and References sections.  (I probably will work on your See Also and External Links sections as well.)  If you have questions on the changes that I make, ask them here below, or if you have any questions in general.  I will pose questions here as well if I end up having them.  Also, I will report my progress on this page as well (i.e. I will tell you what I've done/completed/updated.)  1013-andy 03:05, 29 April 2007 (UTC)
thread_title:  Discussion: Andy 

message: Hey Dan, wow I feel so smart reading your article!  I like that you have the mathmatical equations on there it shows us the process of finding new planets or at least a part of it.  One thing I would add is a sections on some of the planets they have found and when they were found (obviously you can't do all of them but just a handfull would be nice) to show what doppler spectroscopy has done and prove that it's not just a big long name for looking through a telescope ;)  But overall I like your article and I love your topic!  1013-kate 00:22, 1 May 2007 (UTC)
thread_title:  Discussion: Kate 

message: Hey Dan, i went over your article and i changed a couple of grammar errors, but overall you are on a good start. I like the graphs and math equations you used, i think it goes well with your topic. I never heard about this topic but from reading it sounds interesting and you organized the information well. I think if you can find a little more information, that would be great for your article. I plan to stop by your page to see if you have added anything so i can contribute.1013-precious 03:49, 2 May 2007 (UTC)
thread_title:  Discussion: Precious 

message: ===Radial velocity===
Hi Dan. I don't know if you've already seen this, but this topic is more briefly covered in Methods_of_detecting_extrasolar_planets#Radial_velocity. When you're finished, you can link your article from that one. You may be interested in Wikipedia:WikiProject Astronomy, and Wikipedia:WikiProject Space. Good luck. Winklethorpe (talk) 19:23, 27 April 2007 (UTC)
thread_title:  Discussion: Other Wikipedians 

message: Hi Dan. I don't know if you've already seen this, but this topic is more briefly covered in Methods_of_detecting_extrasolar_planets#Radial_velocity. When you're finished, you can link your article from that one. You may be interested in Wikipedia:WikiProject Astronomy, and Wikipedia:WikiProject Space. Good luck. Winklethorpe (talk) 19:23, 27 April 2007 (UTC)
thread_title: Radial velocity

message: "Since that date, over 160 exoplanet candidiates have been identified, and most have been detected by Doppler search programs..."  The current total is up to 189.   This number changes frequently.  For instance, see the edit history of List of stars with confirmed extrasolar planets which shows the exoplanet totals updated nearly every week or so.  You also may want to link here from Extrasolar_planet#Detection_methods.--mikeu 01:43, 7 May 2007 (UTC)
thread_title: exoplanet candidiates

message: The ESO image shows the planet and star orbiting in the same direction.  This is clearly wrong through conservation of momentum.  The planet should be orbiting in the other direction from the star.  Love, MB  — Preceding unsigned comment added by 131.215.194.222 (talk) 02:21, 14 October 2013 (UTC)
thread_title: crappy image

message: Kepler's law and the first planet velocity equation are based on a heliocentric reference frame, where the star is at rest, but the final equation relating planet and star masses is only correct in the center of mass reference frame. v_PL in equation #2 is not the same as v_PL in equation #3.  — Preceding unsigned comment added by 129.82.140.194 (talk) 17:42, 19 October 2018 (UTC)
thread_title: incorrect equations

message: Bayesian Kepler periodogram appears from references in the article to be the output of a new algorithmic treatment of precision radial velocity data.  The text of the article is, in my opinion, a misinterpretation of the content of the manuscripts that are cited, and I have noted this at Talk:Bayesian Kepler periodogram.  Nonetheless, the topic would seem to appropriately sit within this article, until such time as consensus indicates a stand-alone article may be warranted.  I am not sufficiently knowledgeable in the area to do justice to the merge; so I would ask that a regular contributor to articles in this topic area review and, if agreed, conduct the merger.  Regards, User:Ceyockey (talk to me) 01:46, 4 September 2008 (UTC)
replies: text: Do we really need a separate article on Bayesian analysis as applied to radial velocities? I'd vote delete myself. Icalanise (talk) 19:06, 14 December 2008 (UTC)
thread_title:  Merge proposal involving Bayesian Kepler periodogram 

message: ...but planets like the Earth remain undetectable with current instruments.
Is this statement true any more? Isn't Gliese 581 g a counter example? Kingping (talk)  —Preceding undated comment added 17:05, 2 October 2010 (UTC)
replies: text: Depends what you mean by "like the Earth".  Despite the hype, pretty much everything about Gliese 581 g apart from it's relative insolation (and that's debatable) is nothing like Earth.  A 1 Earth-mass planet in the habitable zone of a G-type star like our own cannot currently be detected by Doppler spectroscopy, that will likely have to wait until instruments like ESPRESSO on the Very Large Telescope or CODEX on the European_Extremely_Large_Telescope.  That sentence should be more specific though. ChiZeroOne (talk) 17:17, 2 October 2010 (UTC)
replies: text:  The existence of Gliese 581 g is highly disputed. I have modified this article to make clear which spectrographs are capable of detecting what, and how. For context, I have added a discussion of which planets a hypothetical extraterrestrial observer could observe in the Solar System using these instruments and methodology.  — Preceding unsigned comment added by 64.131.193.65 (talk) 19:10, 26 October 2012 (UTC)
thread_title:  Unsuitability for discovering Earth-like planets 

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thread_title:  External links modified 

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thread_title:  External links modified 

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