Divisibility sequence: Difference between revisions
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< | {{Planetbox begin | ||
| name = [[Harvard Revised catalogue|HR]] 8799 e | |||
}} | |||
{{Planetbox image | |||
| image = | |||
| caption = | |||
}} | |||
{{Planetbox star | |||
| star = [[HR 8799]] | |||
| constell = [[Pegasus (constellation)|Pegasus]] | |||
| RA = {{RA|23|07|28.7150}}<ref name="SIMBAD">{{SIMBAD link|HR+8799|V* V342 Peg -- Variable Star of gamma Dor type}}, entry, [[SIMBAD]]. Accessed on line November 14, 2008.</ref> | |||
| DEC = {{DEC|+21|08|03.302}}<ref name="SIMBAD" /> | |||
| app_mag = 5.964<ref name="SIMBAD" /> | |||
| dist_ly = 129 ± 4<ref name="vanLeeuwen2007">{{cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=113804|title=HIP 114189|work=Hipparcos, the New Reduction|author=van Leeuwen, F.|year=2007|accessdate=2008-10-13}}</ref><ref group="note" name="calculate_distance">Computed from parallax: <math>\scriptstyle \mathrm{distance\ in\ parsecs}=\frac{1000}{\mathrm{parallax\ in\ milliarcseconds}}</math></ref> | |||
| dist_pc = 39 ± 1<ref name="vanLeeuwen2007" /><ref group="note" name="calculate_distance" /> | |||
| class = kA5 hF0 mA5 V; λ Boo<ref name="Gray1999">{{cite journal|title=HR 8799: A Link between γ Doradus Variables and λ Bootis Stars|author=Gray, R.O. and Kaye, A.B.|year=1999|journal=[[The Astronomical Journal]]|volume=118|issue=6|pages=2993–2996|doi=10.1086/301134|bibcode=1999AJ....118.2993G}}</ref><ref name="Kaye1999">{{cite journal|title=Gamma Doradus Stars: Defining a New Class of Pulsating Variables|author=Kaye, A.B. ''et al.''|year=1999|journal=[[PASP]]|volume=111|issue=761|pages=840–844|bibcode=1999PASP..111..840K|doi=10.1086/316399|arxiv = astro-ph/9905042 }}</ref> | |||
}} | |||
{{Planetbox separation | |||
| epoch = | |||
| separation_mas = 368 ± 9<ref name=Marois2011>{{cite doi|10.1038/nature09684}}</ref> | |||
| position_angle = | |||
| separation = 14.5 ± 0.5, 14.8 ± 0.5 <ref name="Marois2011" /><ref name="Currie2011"/> | |||
}} | |||
{{Planetbox orbit | |||
| semimajor = ~ 14.5 ± 0.5<ref name="Marois2011" /><ref group="note" name="circular_orbit">Value given assuming the planet's orbit is circular and is being observed face-on.</ref> | |||
| semimajor_gm = ~ 2175 | |||
| period_year = ~ 50<ref name="Marois2011" /><ref group="note" name="circular_orbit" /> | |||
}} | |||
{{Planetbox character | |||
| mass = 7-9 <ref name="Currie2011"/> | |||
| radius = 1.2 | |||
| temperature = 1,000 <ref name="Skemer2012"/> | |||
}} | |||
{{Planetbox discovery | |||
| discovery_date = November 1, 2010 (announced)<br>November 22, 2010 (published) | |||
| discoverers = Marois ''et al.'' | |||
| discovery_method = [[Direct imaging]] | |||
| discovery_site = [[W.M. Keck Observatory|Keck]] and [[Gemini Observatory|Gemini<br/>observatories]] in [[Hawaii]] | |||
| discovery_status = Published<ref name="Marois2011" /> | |||
}} | |||
{{Planetbox catalog | |||
| names = [[Henry Draper catalogue|HD]] 218396 e<ref>{{SIMBAD link|HD+218396e|HD 218396e – Extra-solar Planet Candidate}}, entry, [[SIMBAD]]. Accessed on line December 11, 2010.</ref> | |||
}} | |||
{{Planetbox reference | |||
| star = HR+8799 | |||
| planet = e | |||
| simbad = HD+218396e | |||
}} | |||
{{Planetbox end}} | |||
'''HR 8799 e''' is a large [[exoplanet]], orbiting the star [[HR 8799]], which lies 128 lightyears from Earth. This [[gas giant]] is between 5 and 10 times the mass of [[Jupiter]],<ref name="Marois2011" /> the largest planet in our solar system. Due to their young age and high temperature all four discovered planets in the HR 8799 system are large, compared to all gas giants in the [[Solar System]]. | |||
==Description== | |||
HR 8799 e is the fourth planet orbiting HR 8799 in order of discovery. It is a young, hot and massive [[gas giant]], and is fairly close to its star, lying just between the orbits of [[Saturn]] and [[Uranus]] in our solar system. The planet is still glowing red hot.<ref name="Marois2011" /> | |||
HR 8799 e is the innermost known planet as it orbits closer to its star than the other three known planets in this [[planetary system]]. This planet orbits at an estimated distance of 14.5 AU based on the relationship between [[angular separation]] measured by direct imaging observations and the star's distance from Earth. The estimated period of this planet if the orbit is face-on is about 50 years.<ref name="Marois2011" /> | |||
==Discovery== | |||
A team of researchers lead by Christian Marois at the National Research Council's Herzberg Institute of Astrophysics identified the planet from data taken in 2009 and 2010 using the [[W.M. Keck Observatory]] in the K and L spectral bands.<ref name="Marois2011"/> They announced their findings on November 22, 2010. A separate work reporting the detection of HR 8799 e, led by Thayne Currie and using the [[Very Large Telescope]], was made public six weeks later.<ref name="Currie2011">{{cite journal |last=Currie |first=Thayne |authorlink= |coauthors=''et al.'' |date=March 2011 |title=A Combined Subaru/VLT/MMT 1--5 Micron Study of Planets Orbiting HR 8799: Implications for Atmospheric Properties, Masses, and Formation |journal=[[The Astrophysical Journal|ApJ]] |volume=729 |issue=2|pages=128 |arxiv=1101.1973 |bibcode = 2011ApJ...729..128C }}</ref> Observations obtained since then with the [[Large Binocular Telescope]] show that HR 8799 e has a spectrum and temperature similar to HR 8799 c and d.<ref name="Skemer2012">{{cite journal |last=Skemer |first=Andrew |authorlink= |coauthors=''et al.'' |date=July 2012 |title=First Light LBT AO Images of HR 8799 bcde at 1.6 and 3.3 μm: New Discrepancies between Young Planets and Old Brown Dwarfs |journal=[[The Astrophysical Journal|ApJ]] |volume=753 |issue=1|pages=14 |arxiv=1203.2615 |bibcode = 2012ApJ...753...14S }}</ref> | |||
==Spectra== | |||
Near infrared spectroscopy from 995 to 1769 nanometers made with the Palomar Obervatory show evidence of Methane and Acetylene but no Ammonia or Carbon Dioxide. There is currently no explanation why this planet shows strong methane absorption, but the other 3 planets in this system do not, despite all 4 planets having similar atmospheric temperatures.<ref name=Gilliland>{{cite web|first = B. R. Oppenheimer|title= Reconnaissance of the HR 8799 Exosolar System I: Near IR Spectroscopy|url=http://arxiv.org/abs/1303.2627|publisher=Cornell University|accessdate=12 March 2013}}</ref> | |||
==Notes== | |||
{{reflist|group=note}} | |||
==References== | |||
{{reflist}} | |||
==External links== | |||
*[http://www.canada.com/Newly+discovered+exoplanet+stirs+debate+planetary+systems+form/3946603/story.html#ixzz17Y8JHwKD Newly discovered exoplanet stirs debate on how planetary systems form] | |||
{{HR 8799|state=collapsed}} | |||
{{Sky|23|07|28.7150|+|21|08|03.302|129}} | |||
[[Category:HR 8799]] | |||
[[Category:Exoplanets discovered in 2010]] | |||
[[Category:Pegasus (constellation)]] | |||
[[Category:Gas giants]] | |||
[[Category:Exoplanets detected by direct imaging]] |
Revision as of 00:40, 29 November 2012
Template:Planetbox begin Template:Planetbox image Template:Planetbox star Template:Planetbox separation Template:Planetbox orbit Template:Planetbox character Template:Planetbox discovery Template:Planetbox catalog Template:Planetbox reference Template:Planetbox end
HR 8799 e is a large exoplanet, orbiting the star HR 8799, which lies 128 lightyears from Earth. This gas giant is between 5 and 10 times the mass of Jupiter,[1] the largest planet in our solar system. Due to their young age and high temperature all four discovered planets in the HR 8799 system are large, compared to all gas giants in the Solar System.
Description
HR 8799 e is the fourth planet orbiting HR 8799 in order of discovery. It is a young, hot and massive gas giant, and is fairly close to its star, lying just between the orbits of Saturn and Uranus in our solar system. The planet is still glowing red hot.[1]
HR 8799 e is the innermost known planet as it orbits closer to its star than the other three known planets in this planetary system. This planet orbits at an estimated distance of 14.5 AU based on the relationship between angular separation measured by direct imaging observations and the star's distance from Earth. The estimated period of this planet if the orbit is face-on is about 50 years.[1]
Discovery
A team of researchers lead by Christian Marois at the National Research Council's Herzberg Institute of Astrophysics identified the planet from data taken in 2009 and 2010 using the W.M. Keck Observatory in the K and L spectral bands.[1] They announced their findings on November 22, 2010. A separate work reporting the detection of HR 8799 e, led by Thayne Currie and using the Very Large Telescope, was made public six weeks later.[2] Observations obtained since then with the Large Binocular Telescope show that HR 8799 e has a spectrum and temperature similar to HR 8799 c and d.[3]
Spectra
Near infrared spectroscopy from 995 to 1769 nanometers made with the Palomar Obervatory show evidence of Methane and Acetylene but no Ammonia or Carbon Dioxide. There is currently no explanation why this planet shows strong methane absorption, but the other 3 planets in this system do not, despite all 4 planets having similar atmospheric temperatures.[4]
Notes
43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.
References
43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.
External links
- ↑ 1.0 1.1 1.2 1.3 Cite error: Invalid
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tag; no text was provided for refs namedMarois2011
- ↑ One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting
In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting
In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ Template:Cite web