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About Digital Art / Hobbyist AlphaMale/Trinidad and Tobago Groups :iconcelestreus: Celestreus
 
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PX1-767 by The-Prototype92

this is my first critique on an artwork, so i'm sorry if i seem a little harsh in my ratings. the image is pretty good overall for a be...

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  • Listening to: dubstep
  • Reading: manga
  • Watching: anime, youtube
  • Playing: not much, mainly naruto storm 4
  • Eating: meat and salad
  • Drinking: water
well, i forgot i even had journals.^^; just letting you guys know that i am now free from my second semester at university. that means i can finally spend more time on my art.:la:
so keep a look out for more art within the next few days to weeks.;)
Upsilon Andromedae d by Alpha-Element
Upsilon Andromedae d
:iconreadplz::iconccwelcomedplz1::iconccwelcomedplz2:Thank You For Faving by Gerguter:icondonotuseplz::iconmyartplz:

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:bulletred:i recommend downloading to see all detail. also, large file size, sorry if it takes long.:bulletred:

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on a roll here!:D here's another warm jovian planet. i'm really enjoying doing these. spent about 10 hours of time on this mostly tweaking the gas giant and positions of the moons. but i have to say that this is probably the most realistic gas giant planet and moon system i have ever made!:D i'm really happy with the way it came out and hope that i could make like these in the future, but knowning me that probably won't be easy.^^;

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:bulletred: Image Self Critique and Description :bulletred:

-here i've depticted the warm super jovian; Upsilon Andromedae d / Majriti. i gave it a deep blue tone with white clouds beneath, which is quite different from my original idea of white with some multicoloured clouds. but it definately came out better, trust me. in actuality the planet is more likely to be whiter with not so much blue and some hints of green. cloud texture was custom made for another planet but worked very well here. the front of the planet is a little too bright, but there wasn't much i could do about that. the shadow came out alot better with less banding which i am glad about, it also looks better with the planet being flattened a bit which i will explain below.

-i did the math and with a mass of 10 jovian masses and age of roughly 3.8 billion years, the planet is likely to have a radius of about 1.03 +/- 0.05 jovian radii. the planet is likely to be quite dense from the gas and so starlight would not penetrate deep into the cloud layers. this would result in a sharper shadow at the terminator which i tried to emulate. the sharper shadow also reduced the banding, so thats another plus.
-i also determined that the planet would have a rotation period estimated at around 4.5 +1.0/-0.25 hours. this rapid rotation would cause the planet to bulge significantly at the equator, however due to the planet's high mass, it is likely to have a huge surface gravity which would help to counteract the bulge and reduce it.

-the moons were a little bit of a pain, i had to completely redo the water moons because they came out horribly. but i fixed them.*obviously it is unknown as to whether or not the planet has moons at this period in time*. for artistic effect i gave the planet 5 major moons; a small dry moon, 2 medium sized water moons and 2 small and cold moons. the total mass of the moon system should be around 0.33 earth masses from models of moon formation, which i tried to stay around.

-using my own calculations and modeling:

:bulletred:moon 1 (just right of planet): dry, volcanic moon with 0.235 earth radii, 0.013 earth masses, orbits at 9.928 planetary radii with an orbital period of 1.190 days.
:bulletred:moon 2 (furthest right of planet): ocean moon with 0.679 earth radii, 0.176 earth masses, orbits at 15.735 planetary radii with an orbital period of 2.375 days.
:bulletred:moon 3 (second left of planet): ocean moon with 0.653 earth radii, 0.140 earth masses, orbits at 24.853 planetary radii with an orbital period of 4.714 days.
:bulletred:moon 4 (furthest left of planet): permafrost moon with 0.457 earth radii, 0.038 earth masses, orbits at 32.872 planetary radii with an orbital period of 7.171 days.
:bulletred:moon 5 (just left of planet): permafrost moon with 0.450 earth radii, 0.030 earth masses, orbits at 42.197 planetary radii with an orbital period of 10.429 days.

all moons orbit near the planet's equator with low eccentricities and inclinations which is to be expected from moons orbiting massive planets.
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you can find out more here:
en.wikipedia.org/wiki/Upsilon_…


so please let your eyes enjoy and leave any comments, favs or critiques,  which are always welcome and appreciated!:D
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Upsilon Andromedae d / Majriti

:bulletblue:constellation: ................... Andromedae
:bulletblue:distance from earth: ........ 44.25 ly
:bulletblue:star's name: ..................... Upsilon Andromedae A / Titawin
:bulletblue:star's type: ....................... F8V
:bulletblue:star's mass: ...................... 1.270 solar masses
:bulletblue:star's radius: ..................... 1.480 solar radii
:bulletblue:star's luminosity: .............. 3.570 solar luminosities
:bulletblue:star's temperature: ........... 6,074 Kelvin
:bulletblue:system's name: ................. Upsilon Andromedae
:bulletblue:# stars in system: .............. 2
:bulletblue:# planets in system: .......... 4
:bulletblue:system's age: ..................... 3.8 billion years

:bulletblue:planet's status: ................. confirmed
:bulletblue:planet's name: .................. Upsilon Andromedae d / Majriti
:bulletblue:planetary class: ................ F - Warm - Jovian - Sudarsky Class II Giant

:bulletblue:planet's radius: ................ unknown
:bulletblue:planet's mass: .................. 10.19 jovian masses
:bulletblue:planet's density: ............... unknown
:bulletblue:surface gravity: ................ unknown
:bulletblue:rotation period: ................ unknown
:bulletblue:average eq. temp: ............. estimated at 218 Kelvin
:bulletblue:average stellar flux: .......... 0.568 earth units
:bulletblue:# satellites: ....................... unknown

:bulletblue:orbital eccentricity: ............ 0.274
:bulletblue:orbital distance: ................. 2.550 au
:bulletblue:year: .................................. 3.567 earth years
:bulletblue:place in system: ................. within conservative habitable zone



Description

Upsilon Andromedae d; now known as Majriti (as of December 2015 via the NameExoWorlds Contest) is a warm jupiter type planet orbiting the sun-like star, Upsilon Andromedae A; now known as Titawin (also via the Name ExoWorlds Contest) about 44 light years away in the constellation of Andromeda. It is the third planet discovered in this system and the third planet from the star.

Majriti has a mass just over 10 times the mass of jupiter which was determined via the radial velocity method, which is also the method used to confirm the planet's existance. The planet's radius is not known though, due to it not transiting it's star as seen from Earth and as such, its density is also unknown, but it can be assumed to be close to that of jupiter due to interior models of gas giants, where electron degeneracy pressure causes planets with masses greater than jupiter's to compress due to gravity. Due to it's high mass, it can be assumed that the planet is also accompanied by a group of orbiting moons.

Majriti orbits its star entirely within the conservative habitable zone but with a mildy eccentric orbit. Due to this eccentric orbit, the planet swings from the inner region to the outer region of the zone over the coarse of its orbit. This would lead to large eccentricity induced temperature and seasonal variations over the coarse of the year. The planet is also in a 1:3 mean motion resonance with planet Upsilon Andromedae c / Samh, completing one orbit for every three that Samh make.
Assuming an atmosphere near chemical equilibrium, the planet is likely to be a Sudarsky Class II Gas Giant, with bright white clouds and somewhat bluish in appearance due to high altitude water clouds.

While it is highly unlikely that the planet itself would support life, any large moons in orbit with sufficient atmospheric pressure may have liquid water on their surfaces and may be conducive to life. The planet's mass is also high enough to assume that these moons are high in mass and are rich in water-ice. As such, these moons would have melted in the habitable zone to form ocean moons with deep oceans. These moons would then provide highly conducive environments for the formation and evolution of marine life. The planet would also have an enormous magnetic field which would protect the moons from stellar radiation and outbursts that would strip them of their atmospheres. The moons are also likely to experience tidal heating from gravitation interactions with the giant planet and other moons, warming and keeping their interiors molten. If the moons formed with enough iron in their cores, it is possible that they would generate their own magnetic fields to help further protect them from radiation and atmospheric loss.

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:icondonotuseplz::iconmyartplz:This Artwork is ­­© 2016 Alpha-Element. ALL RIGHTS RESERVED. DO NOT USE THIS ARTWORK!
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HD 189733 b by Alpha-Element
HD 189733 b
:iconreadplz::iconccwelcomedplz1::iconccwelcomedplz2:Thank You For Faving by Gerguter:icondonotuseplz::iconmyartplz:

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:bulletred:i recommend downloading to see all detail. also, large file size, sorry if it takes long.:bulletred:

__________________________________________________________________________________________


hot jupiter incoming!:D


you can find out more here:
en.wikipedia.org/wiki/HD_20945…


so please let your eyes enjoy and leave any comments, favs or critiques,  which are always welcome and appreciated!:D
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HD 189733b

:bulletblue:constellation: ................... Vulpecula
:bulletblue:distance from earth: .......... 63.4 ly
:bulletblue:star's name: ..................... HD 189733 A
:bulletblue:star's type: ....................... K1-2V
:bulletblue:star's mass: ...................... 0.846 solar masses
:bulletblue:star's radius: ..................... 0.781 solar radii
:bulletblue:star's luminosity: .............. 0.343 solar luminosities
:bulletblue:star's temperature: ........... 4,939 Kelvin
:bulletblue:system's name: ................. HD 189733
:bulletblue:# stars in system: .............. 2
:bulletblue:# planets in system: .......... 1
:bulletblue:system's age: ..................... >0.6 billion years

:bulletblue:planet's status: ................. confirmed
:bulletblue:planet's name: .................. HD 189733b
:bulletblue:habitability class: .............. nill
:bulletblue:thermal class: .................... nill
:bulletblue:earth similarity index: ....... nill

:bulletblue:planet's radius: ................ 1.138 jovian radii
:bulletblue:planet's mass: .................. 1.162 jovian masses
:bulletblue:planet's density: ............... 1.045 g/cc
:bulletblue:surface gravity: ................ 2.268 earth gravities
:bulletblue:rotation period: ................ tidally locked
:bulletblue:average eq. temp: ............. 1,100 Kelvin
:bulletblue:# satellites: ....................... unknown

:bulletblue:orbital eccentricity: ............ 0.004
:bulletblue:orbital distance: ................. 0.0314 au
:bulletblue:year: .................................. 2.219 earth days
:bulletblue:place in system: ................. next to star



Description

HD 189733b is a hot jupiter type planet orbiting the sub-solar star; HD 189733 A about 63 light years away in the constellation of Vulpecula. It is currently the only planet discovered in the HD 189733 system.

The planet has a mass just over 1.1 times the mass of jupiter which was determined via the radial velocity method, and a radius of roughly 1.1 jovian radii which was determined via the transit method, which is also the method used to determine the planet's existance. From these two measurements, the planet has a density just higher than that of water's and so it may have a composition and internal structure similar to that of jupiter.

By analysing the planet's atmosphere during transit, it was determined that the planet has a large hot spot just east of the sub-stellar point and that the planet glows strongly in the blue region of the spectrum and so has a deep blue in colouration.  It was also discovered that similar to HD 209458b, the planet is losing its atmosphere.

The planet orbits its star at a distance of just 3% the earth-sun distance placing it right next to the star in a "roaster" orbit. As such, one year on the planet is only 2.2 days. Due to the proximity of the planet to the star, it is highly likely that the planet does not rotate and so is tidally locked with respect to the star. Despite this, high speed hyper-sonic winds blowing at 7000 km/h still transfer enough heat to the night side of the planet keeping it at a roasting 1000 Kelvin. Due to the high heat and speeding winds, the usually solid materials such as rocks and metals liquefy in the planet's atmosphere and get blown around by the winds. These substances rain through the atmosphere forming liquid glass and metal rains being blasted sideways.

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:icondonotuseplz::iconmyartplz:This Artwork is ­­© 2016 Alpha-Element. ALL RIGHTS RESERVED. DO NOT USE THIS ARTWORK!
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  • Listening to: dubstep
  • Reading: manga
  • Watching: anime, youtube
  • Playing: not much, mainly naruto storm 4
  • Eating: meat and salad
  • Drinking: water
well, i forgot i even had journals.^^; just letting you guys know that i am now free from my second semester at university. that means i can finally spend more time on my art.:la:
so keep a look out for more art within the next few days to weeks.;)

deviantID

Alpha-Element
Alpha
Artist | Hobbyist | Digital Art
Trinidad and Tobago
SO... im quiet natured, calm, barely talks (i talk mainly when i have something interesting to say):) and is constantly thinking of something. i love to cook, draw and make new art, i am also interested in architechure, biology, chemistry, SOME physics and genetics and in the future hopes to become a genetic and chenical engineer!:) i'm also a huge fan of space and space art!:D when i"m not doing anything in school im mainly thinking of my characters and new ones or my space art (but i mainly listen to music)
Also, and most importantly! my love for science has no boundaries!

Well that sorta sumerizes me and i hope i become a great deviant like all the others on da!:D

Favourite genre of music: rock, slight metal and gothic rock, pop rock, techno, electro, dubstep, sountrack from games
Favourite style of art: manga, space art, sci-fi, anthro, digital
Operating System: windows vista, windows 7
MP3 player of choice: my computer, ipod touch
Favourite cartoon character: too many to list
Personal Quote: IMAGINATION IS AN ARTIST'S MOST POWERFUL TOOL!
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:iconaussiehousepulse:
AussieHousePulse Featured By Owner Apr 29, 2016  Hobbyist Photographer
I love your gallery! Your work is amazing!
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:iconalpha-element:
Alpha-Element Featured By Owner Apr 29, 2016  Hobbyist Digital Artist
thank you very much.:)
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:iconaussiehousepulse:
AussieHousePulse Featured By Owner Apr 29, 2016  Hobbyist Photographer
No problem :)
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:iconannaria17:
Annaria17 Featured By Owner Apr 26, 2016  Student Traditional Artist
Wow! Man you're gallery is amazing!
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:iconalpha-element:
Alpha-Element Featured By Owner Apr 27, 2016  Hobbyist Digital Artist
thank you very much. i'll be putting out more artwork soon, hopefully.
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:iconannaria17:
Annaria17 Featured By Owner Apr 27, 2016  Student Traditional Artist
Sweet!
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:iconalpha-element:
Alpha-Element Featured By Owner Apr 27, 2016  Hobbyist Digital Artist
:)
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:iconnukeatomic:
Nukeatomic Featured By Owner Apr 24, 2016  Hobbyist Digital Artist
You should take a stab at drawing TrEs 2B. That'd be so cool.
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:iconalpha-element:
Alpha-Element Featured By Owner Apr 24, 2016  Hobbyist Digital Artist
i would like to try, its just that the planet is the darkest known. trying to make it look realistic would result in an almost black sphere on a black background.^^; that wouldn't be very creative or intriguing to look at. but i could still give it a shot.
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:iconeugenius330:
Eugenius330 Featured By Owner Feb 16, 2016  Hobbyist Digital Artist
Definitely worth a watch!
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:iconalpha-element:
Alpha-Element Featured By Owner Feb 21, 2016  Hobbyist Digital Artist
thank you.:)
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:iconcenturion030:
Centurion030 Featured By Owner Dec 3, 2015
Happy birthday!!!!!!!!!!!!!
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:iconalpha-element:
Alpha-Element Featured By Owner Dec 5, 2015  Hobbyist Digital Artist
thank you:)
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:iconcenturion030:
Centurion030 Featured By Owner Dec 5, 2015
Very welcome!!!!!
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:iconhenkyo:
Henkyo Featured By Owner Dec 3, 2015  Hobbyist Digital Artist
Happy Birthday!
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:iconalpha-element:
Alpha-Element Featured By Owner Dec 5, 2015  Hobbyist Digital Artist
thank you.:D
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:iconhenkyo:
Henkyo Featured By Owner Dec 5, 2015  Hobbyist Digital Artist
You're welcome.
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:iconflumpp:
Flumpp Featured By Owner Dec 3, 2015
Happy Birthday! You deserve one! :happy birthday: 2015 NaNoEmo - #21 Birthday Dance 
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:iconalpha-element:
Alpha-Element Featured By Owner Dec 5, 2015  Hobbyist Digital Artist
thank you.:)
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:iconsonicpl2012:
SonicPL2012 Featured By Owner Dec 3, 2015
Happy Birthday! Party :party la: 
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:iconalpha-element:
Alpha-Element Featured By Owner Dec 5, 2015  Hobbyist Digital Artist
thank you.:D
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:iconsonicpl2012:
SonicPL2012 Featured By Owner Dec 6, 2015
np :la:
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:iconanno78:
anno78 Featured By Owner Dec 3, 2015
Happy Birthday Party 
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:iconalpha-element:
Alpha-Element Featured By Owner Dec 5, 2015  Hobbyist Digital Artist
thank you.:)
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:iconeva1777:
Eva1777 Featured By Owner Dec 3, 2015  Student Interface Designer
Hey! Have a happy birthday!
I hope that many more years of your talents may bloom, and really enjoy your day. :)
(Good luck with your finals as well!)
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