Search found 631 matches

by dougettinger
Thu Oct 04, 2012 7:53 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Diameter of Solar System
Replies: 46
Views: 6081

Re: Diameter of Solar System

Spherical sense, say, East-West, the ecliptic, with the Sun at the center ... Is this true for the perpendicular, the North-South? I'm not sure what you're asking. Most of the mass of the Solar System lies close to the invariable plane, which is defined mostly by the orbit of Jupiter, tweaked a bit...
by dougettinger
Sat Jun 11, 2011 9:07 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

Thank you all for your replies about the possible separations of atomic ions and electrons. You sort of connected most of the strings of knowledge for me about this subject. You're most welcome. In any case, a series of experiments done at the University of Washington - the Eot-Wash experiments - p...
by dougettinger
Sat Jun 11, 2011 8:08 pm
Forum: The Library: Information Desk and Educational Resources
Topic: What are the compositions of planetary nebula?
Replies: 10
Views: 2725

Re: What are the compositions of planetary nebula?

When I read the more serious and detailed reports, much of the jargon is confusing. There may be a good textbook that could clarify some of my confusion if the jargon is really standardized. Some of the limitations as I understand them are: the alignment of the structure w.r.t. to the earth's observ...
by dougettinger
Sat Jun 11, 2011 7:45 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

Chris, that posted observation would certainly eliminate my idea. I do wonder how a trapped electron may be detected. I would think the very act of breaking apart molecules would affect any excess electrons since they are now mobile enough to avoid detection. The mere observation itself could possib...
by dougettinger
Fri Jun 10, 2011 8:06 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

Nereid, excess electrons move to "ground" such as those inside lightning. They become shared with the matter on the surface of the earth. I am not sure that I answered your question. You produced counter arguments to my idea of an imbalance of electrons inside each envelop of matter. I cer...
by dougettinger
Fri Jun 10, 2011 7:25 pm
Forum: The Library: Information Desk and Educational Resources
Topic: What are the compositions of planetary nebula?
Replies: 10
Views: 2725

Re: What are the compositions of planetary nebula?

Hello Nereid, I will investigate SAO/NASA ADS. Thanks for the tip. I am strictly an amateur astrophysicist. My interest in these objects is an investigation of how they expel matter over the period when they are creating various shells of metals in their cores. I have suspicions that their is a tren...
by dougettinger
Fri Jun 10, 2011 1:20 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

It is as certain as anything can be that this is not the cause of gravity. The forces are completely different ones. If electrical charges were somehow involved, you'd expect the mass of a charged object to change, wouldn't you? Or if you have some other definition of mass, the weight would change ...
by dougettinger
Thu Jun 09, 2011 1:19 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

Thank you all for your replies about the possible separations of atomic ions and electrons. You sort of connected most of the strings of knowledge for me about this subject. I have always wondered whether a conglomeration of particles that we call a mass always has some minute, statistically, equiva...
by dougettinger
Thu Jun 09, 2011 1:08 am
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

In HII regions hydrogen can almost exist as ionized atoms or molecules, per a previous statement. Ionic matter supposely needs a certain elevated temperature to exist. The ISM is very cold; so how do these ions exist? Because it is not accurate to say the ISM is very cold. The temperature of the IS...
by dougettinger
Tue Jun 07, 2011 9:12 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Re: Where do all the gases go that are photoevaporated ?

In HII regions hydrogen can almost exist as ionized atoms or molecules, per a previous statement. Ionic matter supposely needs a certain elevated temperature to exist. The ISM is very cold; so how do these ions exist? This next associated questions may sound rather silly. Where do the electrons hang...
by dougettinger
Tue Jun 07, 2011 8:47 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Does Matter absorb space time?
Replies: 111
Views: 466574

Re: Does Matter absorb space time?

Hello Forum Friends,

I just noticed that my code name has been changed to "Curious Querier". I like it. Thanks for giving me an excellent identity. I will try my utmost to keep my curiosity within a scientific framework.
by dougettinger
Mon May 23, 2011 12:52 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Pollux and Procyon: The color of "red" and "blue" galaxies
Replies: 6
Views: 4630

Re: Pollux and Procyon: The color of "red" and "blue" galaxi

Ann, thank you for that spectacular dissertation about the colors of light,the stars, and galaxies. You really have a wonderful passion.

I would also love to read about anything you have to say about the colors of nebulae. Doug
by dougettinger
Mon May 23, 2011 3:03 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: “Venus has a Moon?”
Replies: 6
Views: 869

Re: “Venus has a Moon?”

Interesting. Thanks for explaining, neufer. On a related note, I can't help wondering why it is a sensation that Venus has a moon at all. Mars has two moons, Jupiter and Saturn each have a plethora of moons, Uranus and Neptune both have many, and tiny Pluto has three moons. Even some asteroids have...
by dougettinger
Fri May 06, 2011 3:31 pm
Forum: The Library: Information Desk and Educational Resources
Topic: What are the compositions of planetary nebula?
Replies: 10
Views: 2725

Re: What are the compositions of planetary nebula?

I reviewed the Helix Nebula. Astronomers are focused on the knots and assymetry of the rings - only using spectral lines that are most easily imaged to obtain kinematic models. I need studies that possibly include lower ionization energies which would be found on the outer regions of planetary nebul...
by dougettinger
Fri May 06, 2011 1:45 pm
Forum: The Library: Information Desk and Educational Resources
Topic: What are the compositions of planetary nebula?
Replies: 10
Views: 2725

Re: What are the compositions of planetary nebula?

Thanks, Ann. I will research the Helix Nebula. Would you know the closest Supernova Remnant ? I am also searching for any peculiar distribution of elements in SN remnants.
by dougettinger
Thu May 05, 2011 1:26 pm
Forum: The Library: Information Desk and Educational Resources
Topic: More dwarfs than Snow White
Replies: 7
Views: 2101

Re: More dwarfs than Snow White

I wish to place closure on this topic. After further research and as Ann had mentioned, I discovered that Wikipedia does now also refer to white dwarf stars as "degenerate dwarfs". Dissappointingly, the Wikipedia continued to use "white dwarfs" in their descriptive article. Also,...
by dougettinger
Thu May 05, 2011 12:53 pm
Forum: The Library: Information Desk and Educational Resources
Topic: What are the compositions of planetary nebula?
Replies: 10
Views: 2725

Re: What are the compositions of planetary nebula?

I researched the Cat's Eye Nebula in Wikipedia and dug deeper into the references. I could not decipher from the scientific jargon whether there were more elements/molecules of anyone or more types at different distances from the progenitor star. Perhaps there is a closer nebula than 3000 ly for the...
by dougettinger
Tue May 03, 2011 7:27 pm
Forum: The Library: Information Desk and Educational Resources
Topic: What are the compositions of planetary nebula?
Replies: 10
Views: 2725

What are the compositions of planetary nebula?

Do any easily assessible studies or surveys exist that list the compositions (ions, elements or molecules) of typical planetary nebulae and/or supernova remnants (both older and more recent) at various distances from the progenitor star ?
by dougettinger
Tue May 03, 2011 6:19 pm
Forum: The Library: Information Desk and Educational Resources
Topic: UT: Cosmology 101
Replies: 8
Views: 1391

Re: UT: Cosmology 101

The "Inflation" descriptions/theory that I have read only address the 3 spatial Ds, but Einstein et al says that Time is intimatly linked into the 4D fabric. ... it allows you to split spacetime into space and time again. Phrased differently, it allows you to introduce a time coordinate a...
by dougettinger
Mon May 02, 2011 8:30 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Question about gravity and stellar formation
Replies: 4
Views: 1383

Re: Question about gravity and stellar formation

I wish to add a twist to the original question. Let's assume a Kuiper Belt object the size of Pluto was orbiting at 50 AU just outside the constracting disk of material. This assumption is dis-regarding whether such objects would have been produced at this time. The material continues to contract to...
by dougettinger
Fri Apr 29, 2011 3:45 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Where do all the gases go that are photoevaporated ?
Replies: 19
Views: 3790

Where do all the gases go that are photoevaporated ?

The photoevaporation process creates "fingers" or "elephant trunks" behind EGGS(evaporating gaseous globules), erodes protoplanetary disks, planetary atmospheres, and the surrounding regions of a star entering the main sequence. The word is a misnomer because evaporation or a pha...
by dougettinger
Thu Apr 28, 2011 8:32 pm
Forum: The Library: Information Desk and Educational Resources
Topic: More dwarfs than Snow White
Replies: 7
Views: 2101

Re: More dwarfs than Snow White

I have no prejudice against dwarfism, giantism, homosexuality, skin color, etc. Genetics is what it is. For myself I have no concerns about being politically correct. Being politically correct is actually a nasty joke played on American society by our politicians. But returning to stars, those in th...
by dougettinger
Thu Apr 28, 2011 2:17 pm
Forum: The Library: Information Desk and Educational Resources
Topic: More dwarfs than Snow White
Replies: 7
Views: 2101

Re: More dwarfs than Snow White

Ann hit the head of the nail. Yes, astronomers do have more types of dwarfs than Snow White. When I recently learned that all main sequence stars are labeled dwarfs until they leave the main sequence I was in awe. I am sure I read that little known fact before, but this ignominious fact went through...
by dougettinger
Thu Apr 28, 2011 2:51 am
Forum: The Library: Information Desk and Educational Resources
Topic: More dwarfs than Snow White
Replies: 7
Views: 2101

More dwarfs than Snow White

Do astronomers have more types of dwarfs than Snow White ? Whose dwarfs can you more easily remember ?
by dougettinger
Wed Apr 27, 2011 1:48 pm
Forum: The Library: Information Desk and Educational Resources
Topic: Why do stars have different masses ?
Replies: 2
Views: 3368

Re: Why do stars have different masses ?

The answer to the mystery is perhaps there are different mechanisms that create stars from brown dwarfs, the size of 90 Jupiters to R1361a with 265 solar masses. As you had suggested, active open clusters of stars appear to produce the largest stars. The effect of the surrounding environment certain...