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| | UNIVERSE - Journal of The Astronomical Society of New South Wales Inc. |
 | | Imaging the planet around 51 Pegasi, however, is beyond the capability of current telescopes. | | | Draw a line between Alpha and Beta Pegasi, and halfway along lies 51 Pegasi, a mere degree or so to the west of the line. | | | What was so surprising about 51 Pegasi (and all of the other extrasolar planets discovered thus far)? |
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http://www.asnsw.com/universe/2000/nw-1000.htm
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| | 3C30: Practical Astronomy I |
| | A detailed method of deducing these values will be explained in the data acquisition section but a brief outline of the processes involved is given here. | | | Assuming the 51 Pegasi system is at a distance of 50.2 ly (4.75‰10 | | | The JAVA programming language was used to implement this process. |
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http://www.homepages.ucl.ac.uk/~zcfbx64/51_Pegasi_F.htm
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| | 51 Pegasi |
| | For more information about stars including spectral and luminosity class codes, go to ChView's webpage on The Stars of the Milky Way. | | | John Whatmough also has illustrated web pages on this system in Extrasolar Visions. | | | Unfortunately, the development of an Earth-like planet in this zone could have been disrupted since it would likely be expelled by the inward migration of planet b, as hypothesized by some planetary astronomers. |
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http://www.solstation.com/stars2/51pegasi.htm
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| | CIW - News |
| | In the case of our solar system, the disk gas must have disappeared soon after Jupiter grew to its present mass, well before our planetary system could spiral in to the Sun. | | | Computing Boss's models required months of processing on a fast workstation, a Hewlett-Packard Apollo DN10040 computer at the Carnegie Institution of Washington. | | | The leading theory of giant-planet formation rules out forming a Jupiter-like planet 0.05 A.U. from 51 Pegasi. |
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http://www.carnegieinstitution.org/news_960117.html
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| | HD 209458 Catch a Star Report |
| | If we look at the apparent magnitude of 51 Pegasi, we will see that this magnitude is higher that the apparent magnitude of HD 209458 (5,45 vs. 7,65). | | | We will compare the system of HD 209458 with the first discovered exoplanetary system, namely 51 Pegasi. | | | Besides comparing the HD 209458 system to 51 Pegasi, we will also, at certain aspects, compare the system of HD 209458 with the situation in our own solar system. |
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http://home.wanadoo.nl/draco.com/HD209458/differences.html
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| | eSky: 51 Pegasi |
| | 51 Pegasi is important as possessing a planetary system. | | | This map shows it artificially brighter than it actually appears; in fact, to all but the keenest eyes it is too faint to be visible. | | | Possible appearance of a large gas giant in the 51 Pegasi system, designated 51 Pegasi b, shown here with two hypothetical moons. |
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http://www.glyphweb.com/esky/stars/51pegasi.html
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| | Extrasolar Planets - 51 Pegasi |
| | Most likely it formed in the outer ranges of the system and than migrated to its current position, possibly by interaction with a second giant planet, which was then thrown out of the system during this process. | | | Or it may indeed have formed at its current position, but then 51 Pegasi b would be a supermassive terrestrial world. | | | Inofficially, this planet has been named Vulkan, and it is really a place like Hell. |
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http://www.exoplaneten.de/51peg/english.html
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| | Does 51 Pegasi's Planet Really Exist? |
| | And Pawan Kumar, a stellar-oscillation theorist at Princeton's Institute for Advanced Study, sees no reason why oscillations can't carry on like clockwork for thousands of years if they're so-called gravity modes, rather than sound waves like the Sun's. | | | If 51 Pegasi does have a planet, it's in a decidedly different configuration than we're used to on the basis of our own solar system. | | | Gray, whose book on stellar spectroscopy guided a generation of students, is well known for measuring subtle changes in the shapes of spectral lines. |
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http://exoplanets.org/no51pegb.html
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| | Will a Second Planet Be Discovered around 51 Pegasi? |
| | Continued analysis will narrow the range of uncertainty, he adds. | | | Because the AFOE data on 51 Pegasi extend back to 1993--further back than the Swiss data--the AFOE team was able to analyze nearly 100 separate observations to separate out the effects of the newly discovered planet and see if other, longer-term signals were present from a second planet. | | | Based on their analyses to date, the NCAR scientists conclude that "there is probably not an object larger than ten Jupiter masses closer to 51 Pegasi than two astronomical units [roughly the distance between the Sun and Mars]," says Brown. |
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http://www.ucar.edu/communications/newsreleases/1996/pegasi.html
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| | [No title] |
| | In that case, the diversity of new planets may correspond to different disk masses or disk lifetimes, perhaps even to different environments, including the presence or absence of nearby radiation-emitting stars. | | | Moreover, ordinary physical models predict that the strongest wobbles would occur at higher frequencies than those of the observed oscillations of these stars. | | | The 51 Peg planets defy conventional planet formation theory, which predicts that giant planets such as Jupiter, Saturn, Uranus or Neptune would form in the cooler outskirts of a protoplanetary disk, at least five times the distance from Earth to the sun. |
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http://astron.berkeley.edu/~gmarcy/0398marcy.html
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| | JBO - Pegasus Constellation |
| | Perhaps this is an odd choice for the A-List. There is nothing to see except a single 5.49 magnitude star that can be found just to the west (about 2 degrees) of the line joining the two stars at the western side of the square, Alpha and Beta Pegasi. | | | M15 is easily found by following the line of the two stars Theta and Epsilon Pegasi a further 4 degrees in a north-westerly direction. So, by placing Epsilon at the appropriate side of a binocular or finder scope field, M15 should be visible towards the other. | | | 51 Pegasi - Star with Planet B |
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http://www.jb.man.ac.uk/public/AList/Pegasus.html
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| | Astro 1: Slides for Class 44 |
| | The radial velocity variations of 51 Pegasi versus time | | | A comparison of the 51 Pegasi system to our inner Solar System | | | The radial velocity variations of 51 Pegasi versus orbital phase |
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http://www.astro.psu.edu/users/niel/astro1/slideshows/class44/slides-44.html
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| | Catch a Star 2004 - Registered Projects (51 Pegasi b (exoplanet)) |
| | This page provides an overview of the registered projects that deal with this particular object. | | | Catch a Star 2004 - Registered Projects (51 Pegasi b (exoplanet)) | | | Back to the top page for "Catch a Star! |
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http://www.eso.org/outreach/eduoff/edu-prog/catchastar/cas-51pegb.html
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| | Other Solar Systems |
| | Prospects for Detection of Extra-Solar Giant Planets (a postscript file) | | | The 51 Pegasi planetary system is quite different from our solar system. | | | It is likely that more planetary systems will be discovered using the methods that found 51 Pegasi, 70 Virginis and 47 Ursae Majoris. |
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http://www.worldkids.net/school/planets/nineplanets/other.html
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| | * 51 Pegasi - (Astronomy): Definition |
| | 14 Herculis 15 Sagittae* 18 Scorpii* 37 Geminorum* 44 (i) Boötis 3* 47 Ursae Majoris* 51 Pegasi* 54 Piscium 55 (Rho1) Cancri 2* 58 Eridani* 70 Virginis 83 Leonis 2* 85 Pegasi 3* Aldebaran 2 Alpha Mensae* Arcturus Beta Pictoris Capella 4 Castor 6 CM... | | | 5-magnitude 51 Pegasi is easily visible in binoculars, high in the evening sky, between Alpha and Beta Pegasi, the western pair of stars in the Great Square of Pegasus. | | | Pegasus is part of the Zodiacal constellation of Aquarius (?) where the first known planet, 51 Pegasi, outside of our own was discovered in 1995. |
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http://en.mimi.hu/astronomy/51_pegasi.html
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| | Katastrop Terakhir di 51 Pegasi |
| | Bintang 51 Pegasi adalah bintang sekelas Matahari dengan massa sedikit lebih besar, yaitu 1,3 kali massa Matahari (massa Matahari = 2 x 10 | | | Dalam orde puluhan juta tahun dari sekarang, planet dalam sistem 51 Pegasi akan mendekati bintang induk (nilai a makin mengecil). | | | Dihitung pula pengaruh pasang-surut dengan model friksi lemah ini untuk sistem lainnya yang memiliki karakteristik sama dengan sistem 51 Pegasi. |
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http://www.as.itb.ac.id/~ferry/Articles/LastCatastrophe/LastCatastrophe.html
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| | 51 Pegasi - Wikipedia, the free encyclopedia |
| | Further such companions would be designated c, d, and so on. | | | The name of the exoplanet is '51 Pegasi b' (see the article for more detailed information); the 'b' is used to indicate that it is the first discovered planetary-mass companion of its parent star. | | | The star itself is of apparent magnitude 5.49, and so is visible from the Earth with binoculars, or with the naked eye by those with good vision in very dark sky conditions. |
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http://en.wikipedia.org/wiki/51_Pegasi
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| | Extrasolar Visions - 51 Pegasi b |
| | 51 Pegasi b may be a supergiant version of the Jovian moon Io. | | | 51 Pegasi b has about the same calculated temperature as HD 209458 b, so there is a good chance that its atmosphere is evaporating to some degree as well, although direct observations would be required to verify this. | | | Measurements of the planet's magnetic field would confirm this. |
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http://www.extrasolar.net/planet.asp?PlanetID=1
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| | [No title] |
| | There are two independent arguments as to why we are probably seeing the system near to equator-on, so that sin i is close to 1. | | | First, a rotation period has not been measured directly for 51 Peg, but from its activity level (which is a little less than the Sun's) we can estimate it must be about 30 days, which is to say essentially the same as the Sun's. | | | Velocities of stars are derived from the Doppler effect, as a part of our long-term search for planetary systems. |
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http://zebu.uoregon.edu/51peg.html
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| | eSky: 51 Pegasi b |
| | The designation given to the large world thought to orbit 51 Pegasi, a yellow star fifty light years away from Earth's solar system. |
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http://www.glyphweb.com/esky/planets/51pegasib.html
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| | 51 Pegasi |
| | With the exception of some pulsar planets, 51 Pegasi b was the first extrasolar planet to be found. | | | The existence of giant planets very close to their host stars has led to the suggestion that inward orbital migration is a common feature of young planetary systems. | | | Even so, calculations show that it should still be able to retain a massive atmosphere of predominantly light gases. |
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http://www.daviddarling.info/encyclopedia/A/51Peg.html
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| | 51 Pegasi |
| | Gray's examination of the spectral lines around 51 Pegasi indicates that they are not only moving, but changing shape. | | | Since the original discovery in 1995, approximately 10 other planets outside our solar system have been reported using the same research and data collection techniques. | | | Four of them are similar to 51 Pegasi. |
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http://www.xs4all.nl/~carlkop/51peg.html
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| | Science and Religion. Sikhism does not conflict with Science |
| | However 51 Pegasi is considered very close in relation to other stars. | | | For example, a star name 51 Pegasi in Pegasus constellation has three planets revolving around it (known so far). | | | Our Universe is so vast that it takes millions of years to travel to stars and planets beyond our solar system. |
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http://www.realsikhism.com/science.html
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| | Most Space Telescope Sees "Tail Wagging Dog" In Star - Exoplanet System |
| | Artist rendering of 51 Pegasi, by Seth Shostak. | | | The planet in the tau Bootis system is more massive and closer to its star than the one in 51 Pegasi, and represents a remote laboratory for planetary scientists to test new theories about planet formation that will eventually be applied to our own Solar System. | | | Canadian astronomers using the MOST space telescope have observed a remarkable planetary system where a giant close-in planet is forcing its parent star to rotate in lock-step with the planet's orbit. |
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http://www.spacedaily.com/news/extrasolar-05zc.html
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| | Encyclopedia of Suns: 51 Pegasi |
| | In honor of 51 Pegasi, other similar planets (very large and extremely close to their star) are sometimes called "Pegasean" planets. | | | It is uncertain if Earthlike worlds exist in this system; if current theories for 51 Pegasi B's formation are right, however, the odds are poor. | | | 51 Pegasi is famous as the first Sunlike star discovered to have a planet. |
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http://www.astronexus.com/scripts/eos/eos_star.php?IDType=HD&ID=217014
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| | 51 Pegasi |
| | They argue that pulsations of 51 Pegasi, even if they occur as flows of gas... | | | For 51 Pegasi B, the scenario begins with... | | | These Pegasi planets, named after the first extrasolar planet 51 Peg b, are so close to their parent star that they are bombarded by intense stellar irradiation... |
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http://enciclopedia.cc/51_Pegasi
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| | MSN Encarta - 51 Pegasi Solar System |
| | Find more about 51 Pegasi Solar System from | | | 51 Pegasi Solar System, solar system composed of a star similar to the sun and one known planet orbiting the star. | | | Become a subscriber today and gain access to: |
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http://encarta.msn.com/encyclopedia_761587635/51_Pegasi.html
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| | FLORIDA TODAY Space Online |
| | Gray's research doesn't threaten all of that - just some of it. | | | He observed the 51 Pegasi 39 times between 1989 and 1996, noting each time how a very precise color of light was shifted away from its normal value. | | | He argues that subtle features he detected could be caused only by light variations in the star itself. |
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http://www2.smumn.edu/deptpages/~physics/astronomy/planet2.htm
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| | STARSTRUCK - Canadian Space Te |
| | This is certainly true of the planet around 51 Pegasi. | | | In fact a group of researchers is hoping to learn more about the planet there by using Canada's first ever space telescope. | | | Since evidence for the planet around 51 Pegasi was first reported over 100 other stars have been identified as having planets. |
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http://www.exn.ca/html/templates/printstory.cfm?ID=2003100353
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| | [No title] |
| | Either way, the kinematics are unremarkable and suggest that 51 Pegasi belongs to the old thin disk, as do most nearby stars. | | | It is also earlier than the temperature type of G5 given in several older publications. | | | ----------------------------------------------------------------------- [Here is some of the older data] Newsgroups: sci.astro,sci.astro.amateur,alt.sci.planetary Subject: Data on 51 Pegasi Date: 16 Oct 1995 18:51:16 -0700 From: galaxy@ccnet.com (Ken Croswell) I spent some time locating basic data on 51 Pegasi, the solar-type star that may have a planet. |
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http://www.ipp.mpg.de/~bds/astro/Peg51.txt
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| | [No title] |
| | As the planet moves around 51 Pegasi it pulls on the star moving it ever so slightly. | | | This means that the planet would be approximately 11 times larger than the earth. | | | QUESTION: We want to know what are some of the similarities between earth and the new found planet near 51 pegasus, and how can you tell the differences? |
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http://quest.arc.nasa.gov/lfs/QA/Planet_in_51_Pegasi.txt
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| | Nature Science Update - article |
| | This is analogous to what Gray has done -- he's looked more closely at the spectrum of 51 Peg, and seen the line shapes changing. | | | He suggests that the four candidate planets with orbital periods less than about two weeks need to be re-examined carefully, to see if they show the same effect he sees in 51 Pegasi. | | | The evidence was based on observations showing that the star was wobbling systematically in space, in just the way that it should if it were orbited by a large planet about half the mass of Jupiter, by far the largest planet in our own Solar System. |
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http://www.physics.sfsu.edu/~gmarcy/planetsearch/nature_sage.html
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| | 51 Pegasi: The Discovery of a New Planet |
| | The student discovers a planet orbiting another star and compares the results of the discovery with planets in our solar system. | | | As you can see, the radial velocities are sometimes positive and sometimes negative indicating that sometimes the star is receding from (the light is redshifted) and sometimes approaching (the light is blueshifted) our frame of reference. | | | 51 Pegasi: The Discovery of a New Planet |
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http://www.astro.washington.edu/labs/clearinghouse/labs/51Peg/51pegasi.html
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| | Planet Around 51PEG |
| | Velocity versus Time for 51 Peg, during one month starting 12 October 1995. |
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http://exoplanets.org/esp/51peg/51peg.shtml
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| | New Planets. (Page 1) |
| | Although 51 Peg is quite different from our solar system, 70 Virginis and 47 Ursae Majoris systems appear to be more normal. | | | This planet is 44 light years distance from Earth and may have temperatures that could allow the formation of liquid water. | | | Although most would believe that our sun was the only one in the universe with orbiting planets, in October of 1995 two observers from The University of Geneva made a startling announcement. |
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http://vince.jctc.kctcs.net/classes/ast191/students/ast1.html
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| | [No title] |
| | The 1997 observing season for 51 Peg is now past, and several of us have worked very hard to collect new (more closely spaced) data. | | | First, the interesting non-radial oscillations of 51 Pegasi are no longer available with all their potential for revealing the physics of the star. | | | Therefore, the best conclusion is that the profiles do not vary, and presumably the signal seen in my earlier observations was indeed noise no matter how small the calculated probability of occurrence. |
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http://www.astro.uwo.ca/~dfgray/51-Peg2.html
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| | UT astronomers help shine guiding light on another world |
| | Gray, whose spring claim that spectral light around 51 Pegasi was changing in shape and thus not evidence of a planet had cast doubt on some of the other planet discoveries as well, recants the theory in the same new issue of Nature. | | | Following the discovery, a team using an innovative new way of analyzing star light found six planets in a year. | | | Cochran said he thinks the debate about 51 Pegasi is now settled and Gray added that his best guess is that the discoveries of all seven planets orbiting sun-like stars are correct. |
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http://www.chron.com/content/chronicle/aol-metropolitan/98/01/12/star.2-0.html
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| | 51 Pegasi Results |
| | While we're on the topic of far-out planetary configurations, another type of allowed 1:1 configuration is the 1:1 eccentric resonance, an example of which is shown below. | | | The first published report of non-detections of transits was given by: Henry, et al. | | | While 1:1 resonant configurations that exhibit small librations about the stable equilateral configuration are not ruled out by the radial velocity observations, we stress that there is no evidence as yet suggesting that 51 Peg b (or any of the other extrasolar planets) is actually a 1:1 resonant pair. |
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http://www.ucolick.org/~laugh/51_Peg___b.results.html
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| | 51 Pegasi and Tau Boötis: Planets or Pulsations? |
| | Here we discuss the results of a search for evidence of pulsations in the AFOE data for these two stars, as well as attempt to clear up misconceptions regarding pulsations circulated as a result of the current debate about the nature of the 51 Pegasi radial velocity variations. | | | 51 Pegasi and Tau Boötis: Planets or Pulsations? | | | It has recently been suggested (Gray 1997) that the radial velocity variations observed in the spectra of 51 Pegasi are the result of stellar pulsations as opposed to the reflex motion due to an orbital companion. |
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http://cfa-www.harvard.edu/afoe/cs10-97-poster.html
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| | Alpha Centauri's Universe: Exploration Of 51 Pegasi |
| | Yet existing theories for the development of planetary systems indicated that such giant planets should form at much greater distances from a star. | | | Some initially believed that the old theories were fine and that 51 Pegasi was simply the exception that proves the rule. | | | Astronomers now surmise that such "hot Jupiters" might, in fact, be commonplace. |
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http://www.earthandspace.info/contents/file0061b.htm
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| | Solar Voyager Forums: Extrasolar - 51 Pegasi b, "Bellerophon" |
| | I would have sworn that a planet that close to it's parent star like 51 Pegasi couldn't possibly be a gas planet (goes against all senses). | | | P.S. Should be 51 Pegasi b, uppercase letters are used for stars, planets take lowercase designations. | | | However, it exists well beyond the Roche's limit for gas planets. |
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http://www.solarvoyager.com/forum/forum_posts.asp?TID=2219&PN=1
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| | 51 Pegasi |
| | A (fanciful) view of the 51 Pegasi system. | | | 51 Pegasi is the first planet found near a star outside the solar system. | | | If you're interested in new planets, visit this site : |
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http://www.p-gallery.net/Space/51_Pegasi.htm
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| | Bibliographie des DLR (LIDO) |
| | The detection of absorption features in spectra of 51 Peg obtained during transit of its planet would provide a first clue on the physical nature of the planet. | | | Careful comparison of spectra taken during the transit of the planet with spectra obtained when the planet was not in the line-of-sight did not reveal any significant differences. | | | Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, the Netherlands and the United Kingdom) and with the participation of ISAS and NASA. |
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http://www2.dlr.de/lido/WP/2000/1802872000.html
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| | 51 Pegasi |
| | Located on the midpoint of the western edge of the Great Square of Pegasus, 51 Pegasi is by far the easiest to find despite its dimness. |
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http://www.astronautica.com/51peg.htm
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| | 51 Pegasi - New Music - Peoplesound |
| | The biend of breaks and atmospheres has come from the mind of Andy Tully who has been producing electronic music in different shapes and forms for the past nine years. | | | Like something straight from the Good Looking camp, 51 Pegasi take chilled out Drum''n''Bass to a new level. |
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http://www.peoplesound.com/artist/51pegasi?score=2&rateID=25236
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