Hi friends, If you missed last night's fascinating meeting, or if you'd like to review what was said, here's my take! http://www.deseretnews.com/blog/47/10011639/Nightly-news-astronomy-Examining... Thanks, Joe
Joe, I'm afraid I missed that meeting. Thaks for your excellent reporting. ALMOST feels like I had attended. If I was there I would have asked the following question: "How can they be sure that any those 1,200 sightings are indeed habitable planets after only 4 months of observation?" He said that to determine if it's a planet there would have to be repeated dimmings of the parent star. If they've found that many repeated dimmings after only 4 months, those 53 "habitable" planets must be extremely close to the star. So close that I would think that they couldn't be in any inhabitable zone. --- On Wed, 3/16/11, Joe Bauman <josephmbauman@yahoo.com> wrote: From: Joe Bauman <josephmbauman@yahoo.com> Subject: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Wednesday, March 16, 2011, 10:14 PM Hi friends, If you missed last night's fascinating meeting, or if you'd like to review what was said, here's my take! http://www.deseretnews.com/blog/47/10011639/Nightly-news-astronomy-Examining... Thanks, Joe _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
Hi Mike, These are candidate planets, not confirmed planets. It takes longer to confirm planets. Most of them are not habitable. As to some that are in the habitable zone, and I'm only guessing about this, they may orbit closer to their stars. The distance to the habitable zone varies according to how much heat the star puts out, and there are all sorts of differences. But I think most of the stars involved are sun-like, so that doesn't really answer the question. It's a good one and I'll try to find a better answer. Thanks, Joe --- On Thu, 3/17/11, M Wilson <astro_outwest@yahoo.com> wrote:
From: M Wilson <astro_outwest@yahoo.com> Subject: Re: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, March 17, 2011, 8:45 AM Joe, I'm afraid I missed that meeting. Thaks for your excellent reporting. ALMOST feels like I had attended. If I was there I would have asked the following question: "How can they be sure that any those 1,200 sightings are indeed habitable planets after only 4 months of observation?" He said that to determine if it's a planet there would have to be repeated dimmings of the parent star. If they've found that many repeated dimmings after only 4 months, those 53 "habitable" planets must be extremely close to the star. So close that I would think that they couldn't be in any inhabitable zone.
--- On Wed, 3/16/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
From: Joe Bauman <josephmbauman@yahoo.com> Subject: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Wednesday, March 16, 2011, 10:14 PM
Hi friends, If you missed last night's fascinating meeting, or if you'd like to review what was said, here's my take!
http://www.deseretnews.com/blog/47/10011639/Nightly-news-astronomy-Examining... Thanks, Joe
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None are habitable, or at least confirmed as habitable. Being in the "habitable zone" just denotes an orbit constrained by parameters such as the amount of radiation (read heat and light) received from the host star. On 3/17/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
Most of them are not habitable. As to some that are in the habitable zone, and I'm only guessing about this,
Hi friends, I sent Mike's question along to Prof. Armstrong, and today I received this reply: Cool blog post. Thanks! This is a very perceptive question...the stars are cool red dwarfs, so the planets have to be much closer (shorter period) to be in the habitable zone... j -- Best wishes, Joe --- On Thu, 3/17/11, M Wilson <astro_outwest@yahoo.com> wrote:
From: M Wilson <astro_outwest@yahoo.com> Subject: Re: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, March 17, 2011, 8:45 AM Joe, I'm afraid I missed that meeting. Thaks for your excellent reporting. ALMOST feels like I had attended. If I was there I would have asked the following question: "How can they be sure that any those 1,200 sightings are indeed habitable planets after only 4 months of observation?" He said that to determine if it's a planet there would have to be repeated dimmings of the parent star. If they've found that many repeated dimmings after only 4 months, those 53 "habitable" planets must be extremely close to the star. So close that I would think that they couldn't be in any inhabitable zone.
--- On Wed, 3/16/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
From: Joe Bauman <josephmbauman@yahoo.com> Subject: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Wednesday, March 16, 2011, 10:14 PM
Hi friends, If you missed last night's fascinating meeting, or if you'd like to review what was said, here's my take!
http://www.deseretnews.com/blog/47/10011639/Nightly-news-astronomy-Examining... Thanks, Joe
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Thanks for the extra effort, Joe. Man, those stars must be really cool to have planets orbiting in a habitable zone that's only 90 day or less in duration. --- On Mon, 3/21/11, Joe Bauman <josephmbauman@yahoo.com> wrote: From: Joe Bauman <josephmbauman@yahoo.com> Subject: Re: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Monday, March 21, 2011, 11:14 AM Hi friends, I sent Mike's question along to Prof. Armstrong, and today I received this reply: Cool blog post. Thanks! This is a very perceptive question...the stars are cool red dwarfs, so the planets have to be much closer (shorter period) to be in the habitable zone... j -- Best wishes, Joe --- On Thu, 3/17/11, M Wilson <astro_outwest@yahoo.com> wrote:
From: M Wilson <astro_outwest@yahoo.com> Subject: Re: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, March 17, 2011, 8:45 AM Joe, I'm afraid I missed that meeting. Thaks for your excellent reporting. ALMOST feels like I had attended. If I was there I would have asked the following question: "How can they be sure that any those 1,200 sightings are indeed habitable planets after only 4 months of observation?" He said that to determine if it's a planet there would have to be repeated dimmings of the parent star. If they've found that many repeated dimmings after only 4 months, those 53 "habitable" planets must be extremely close to the star. So close that I would think that they couldn't be in any inhabitable zone.
--- On Wed, 3/16/11, Joe Bauman <josephmbauman@yahoo.com> wrote:
From: Joe Bauman <josephmbauman@yahoo.com> Subject: [Utah-astronomy] Tuesday's SLAS meet To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Wednesday, March 16, 2011, 10:14 PM
Hi friends, If you missed last night's fascinating meeting, or if you'd like to review what was said, here's my take!
http://www.deseretnews.com/blog/47/10011639/Nightly-news-astronomy-Examining... Thanks, Joe
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
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Love this quote (whatever it means, lol): "they could get the most stars in one field of view without getting too many stars within the field of view"
Chuck, Too many stars makes it impossible to image single stars without contamination from background stars. You want an area with high density but not so high you can't separate individual stars. -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Chuck Hards Sent: Thursday, March 17, 2011 9:06 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Tuesday's SLAS meet Love this quote (whatever it means, lol): "they could get the most stars in one field of view without getting too many stars within the field of view" _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
LOL, I understand Don. It was just an akwardly phrased statement. On 3/17/11, Don J. Colton <djcolton@piol.com> wrote:
Chuck,
Too many stars makes it impossible to image single stars without contamination from background stars. You want an area with high density but not so high you can't separate individual stars.
participants (4)
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Chuck Hards -
Don J. Colton -
Joe Bauman -
M Wilson