Re: Edasich's Work

Sedna · by Sedna on Sat Aug 15, 2009 3:07 pm

Hi Edasich,

I just discovered this topic with your artworks (damn it, I'm so late !). I think it's just... awesome ! Great work ! But I have some remarks to say about your rendering of 2M 1207 b. Astronomers have discovered (a couple years ago I think) that the planet is situated in a cloud of gas and has got a ring (maybe for moon accretion). They also discovered a dust disk around the star, and there are eruptions on the star itself.

I wonder if you could reproduce that on Celestia.

Bye

Sedna

Sirius_Alpha · by Sirius_Alpha on Mon Aug 17, 2009 6:17 am

As I understand it, a ring around 2M1207b was hypothesized to explain why the planet is a few magnitudes underluminous. I don't recall if this was confirmed.

There's work being done with sprites in Celestia that will model all the behavior you describe very nicely.

Sedna · by Sedna on Mon Aug 17, 2009 3:08 pm

Hypothesized ? I never heard something about that. But if I could re-find this paper (omg web is so big !).

Sprites aren't bad, but it would be better with millimeter-sized rocks (or micron-sized ones), the sprites I've seen are entirely made of gas. Apart from that, I could tell more details about this system (one of my favourites) but you will think that I am a psychic. Plus, if Edasich reproduces that, I want to see the results.

Bye

Sedna

Edasich · by Edasich on Sun Aug 23, 2009 2:32 pm

Darkness nova wrote:Very nicely done edasich. I like how you do these hot earths, aka 94 ceti, gliese 876 and hd 29587 planets and moons....and the frozen planet is nice as well. What'd you use to get the texture for hd 29587's moon? The surface looks nice, however are you sure the clouds on such a moon would be white? I mean it is covered in volcanism so you'd think they'd be more along the lines of the color of ash no?

Thank you, Darkness. Right, I agree with you the atmosphere should look hazier and rich of ashes. I have several cloud textures to test. I think I can fix this.

I just discovered this topic with your artworks (damn it, I'm so late !). I think it's just... awesome ! Great work ! But I have some remarks to say about your rendering of 2M 1207 b. Astronomers have discovered (a couple years ago I think) that the planet is situated in a cloud of gas and has got a ring (maybe for moon accretion). They also discovered a dust disk around the star, and there are eruptions on the star itself.

I wonder if you could reproduce that on Celestia.

Thank you, too, Sedna. I'd have two options: either test a peculiar ring texture with sparse rocks rather lines or generate many many many satellites. Since the latter options sounds quite hard, I think I'm going to try the former. Laughing

I will notify you if there are result, maybe in next update.

Meanwhile here is a little update with some "vintage" exoplanetary stuff (though unconfirmed or putative astronomical objects). Razz

23) 97-BLG-41: who remembers this one?

As far as I know the planet seemed to be disproven since 1999. Actually I've found a paper from 2002 that still predicts stability model for a circumbinary 3 Mj jovian planet around the system's barycentre (0.6+0.16 M_So, i.e. a late K/M star + late M dwarf at 1.5 AUs).

24) 98-BLG-35: another unconfirmed system.

According EPE there an Earth-mass object should be located 1.5 or 2.3 AUs away from a likely M4 dwarf. With inferred HZ=0.11 AUs alike GJ 581, the putative planet could resemble the other microlensing planet MOA-2007-BLG-192-Lb.

25) Gliese 176 b: hazy "hot-house" super-earth. I think. Neutral

26) HD 149382 b: B subdwarf + tight orbit brown dwarf. The most extreme planetary system so far. cyclops

27) HH 211: protostar (currently proto-brown dwarf, with 50 Jupiter masses) with protoplanetary disk and possible far away protoplanet (here not displayed).

According to scientist the protostar is accreting together proplyds, therefore the system should likely evolve into a low mass star + brown dwarf system in the future, since accreting protoplanet yields 8 Jupiter masses at the moment (being surrounded by a thick ring of dust and particle as heavy as 1.5-4 Jupiter masses). Re-Gosh! affraid

Sedna · by Sedna on Sun Aug 23, 2009 3:23 pm

Edasich wrote:Thank you, too, Sedna. I'd have two options: either test a peculiar ring texture with sparse rocks rather lines or generate many many many satellites. Since the latter options sounds quite hard, I think I'm going to try the former.
I will notify you if there are result, maybe in next update.

Hi again Edasich,

Creating a whole lot of moons (maybe billions with the size of a town) will take a lot of code's lines. Futhermore, it will be wrong because a collision with a Neptune-size planet happened recently and such moons cannot form with a few thousand years of time. Option one is better, much better. So now, I sit and wait until you're done and if you have questions, ask me and I will answer.

Bye

Sedna

PS: I didn't even know that the 97-BLG-41 planetary system exists, even though it's classified as disproven.

Lazarus · by Lazarus on Sun Aug 23, 2009 3:53 pm

The light curve of 97-BLG-41 can be explained by the orbital motion of the binary stars, you don't need to invoke a planet as well. In this model, both stars are M dwarfs (the most probable parameters appear to put the secondary right at the star/brown dwarf dividing line). {Link}

Incidentally the Wikipedia page for MACHO-98-BLG-35 is pretty spectacular in its awfulness, going wrong in the very first sentence where it is stated that it is a star, rather than the designation of a microlensing event...

Edasich · by Edasich on Wed Sep 09, 2009 1:59 pm

Little update: some "hot" planets *oh the bad pun!*

28) Corot-1 and planet: it just needed a picture, didn't it?

29) HAT-P-7 and planet: so did this one.

30) WASP-18 and planet. The biggest and hottest so far.

31) BD+20 1790 b: young and close-in superplanet.

32) Cataclysmic variable OY Carinae and superplanet: if confirmed it would the first planet orbiting a dwarf nova.

Minimum mass 16 Mj and orbital period nearly 80 years (around 17 AUs).
Here circumbinary disk has been enphasized for artistic purpose.

NuclearVacuum · by NuclearVacuum on Wed Sep 09, 2009 2:59 pm

Edasich wrote:
23) 97-BLG-41: who remembers this one?

As far as I know the planet seemed to be disproven since 1999. Actually I've found a paper from 2002 that still predicts stability model for a circumbinary 3 Mj jovian planet around the system's barycentre (0.6+0.16 M_So, i.e. a late K/M star + late M dwarf at 1.5 AUs).

I'm still a believer in this planet. ^_^

Edasich · by Edasich on Thu Sep 10, 2009 11:29 am

I'm still a believer in this planet. ^_^

So am I!

However, sorry for annoyance, but I just meant to add this requested and updated version of 2M 1207 b protoplanet.
I've still to find a way to get clear rocky bodies around the dust rings, but visible debris displayed seems work good, doesn't it?
I hope you like it.

2M 1207 b the first certain protoplanet imaged.

Sirius_Alpha · by Sirius_Alpha on Thu Sep 10, 2009 12:31 pm

Amazing ring system

.

Though a bit awkward that the planet casts now shadow in the inner accretion disk.

Sedna · by Sedna on Thu Sep 10, 2009 5:50 pm

Edasich wrote:
However, sorry for annoyance, but I just meant to add this requested and updated version of 2M 1207 b protoplanet.
I've still to find a way to get clear rocky bodies around the dust rings, but visible debris displayed seems work good, doesn't it?
I hope you like it.

Well, the person who requested person says that it's a very good work. On the case of the rings, it's better than I expected. The ordered outer rings with lots of dust and the spiral-shape inner ring showing the event with the Neptune-size planet. The planet itself is very good too, with this red glow showing the heat resulting from the collision. So, I congrad you Edasich.

Bye

Sedna

Edasich · by Edasich on Mon Oct 05, 2009 5:37 am

Monday thread bump. Some updates:

33) - HD 38529's multiplanet system. Planet b, eccentric hot jupiter (I complain about grainy appearance due to image capture)...

...and Planet c, superjovian planet. With a dense ring of dust and particles.

34) Gamma Cephei Ab: roughly alike Whathmough's version.

35) PSR B1257+12's planetary system, the most famous pulsar planet system. Scaled by size.

36) And then an unconfirmed planetary object: SWEEPS-10. Star is an early M dwarf with an extremely close hot jupiter (1.24 Jupiter radii): 0.008 AUs. To be confirmed.

Zoomed view.

See you next update

Stalker · by Stalker on Mon Oct 05, 2009 12:01 pm

why pulsar planets are so active?

Edasich · by Edasich on Tue Oct 06, 2009 3:51 am

Stalker wrote:why pulsar planets are so active?

Because of their young age (nearly 800 million years) and because of strong radiations from homepulsar that continuously stress planet's crust.

Sirius_Alpha · by Sirius_Alpha on Tue Oct 06, 2009 4:17 am

How does the pulsar stress the planet's crusts?