Search found 104 matches

by sallyseaver
Mon Aug 01, 2022 3:01 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Jupiter and Ring in Infrared from Webb (2022 Jul 20)
Replies: 42
Views: 27724

Re: APOD: Jupiter and Ring in Infrared from Webb (2022 Jul 20)

The dog image is single channel (that is, grayscale data) mapped to a pseudocolor palette. It is in a wavelength band that represents energy being emitted from the dog, not reflected in any way. Intensity has been mapped to color, so whether brighter is hotter is purely dependent upon the chosen pa...
by sallyseaver
Sat Jul 30, 2022 11:33 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Jupiter and Ring in Infrared from Webb (2022 Jul 20)
Replies: 42
Views: 27724

Re: APOD: Jupiter and Ring in Infrared from Webb (2022 Jul 20)

Judy/Geckzilla, who processed the JWST data, confirmed the following on https://geckzilla.com/ : Red (screen): NIRCam F322W2-F323N (this is not a subtraction function, both filters were used at the same time) Blue: NIRCam F212N Background is a grayscale combination of both filters. There were gaps i...
by sallyseaver
Thu Dec 05, 2019 5:31 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Our Galaxy's Magnetic Center (2019 Jun 19)
Replies: 11
Views: 5065

Re: APOD: Our Galaxy's Magnetic Center (2019 Jun 19)

I'm wondering how to interpret the image. In this APOD image, there are lines, also, the image includes color information: hue, saturation and brightness. SOFIA is reading polarity of the far infrared radiation. Do the lines indicate the transverse direction of the radiation? Is the transverse direc...
by sallyseaver
Wed Jun 06, 2018 7:56 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Cyclones at Jupiter's North Pole (2018 Mar 08)
Replies: 14
Views: 30539

Re: APOD: Cyclones at Jupiter's North Pole (2018 Mar 08)

What is the interpretation of the colors? Is this a true-color infrared such that the white parts are cool and the red parts are hot?
by sallyseaver
Thu Jan 04, 2018 4:30 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: Sally's Stars

Hello again sally. I admire your politeness, your interest in the fascinating and challenging subjects of star and planet formation, your statements showing respect for the scientific method, your imagination and your pluck. You're trying to overturn some very well established theories however, and...
by sallyseaver
Thu Jan 04, 2018 2:50 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

Hello Sally. I think you've made some valid points in questioning conventional wisdom re star formation, especially in areas like the vacinity of Sag A*. However, at least twice in this thread you have claimed that the young star object CX330 changed from a black hole into a protostellar object. Ca...
by sallyseaver
Thu Jan 04, 2018 1:50 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

Honestly, I don't have time to educate you on all the things you comment on (and in many cases, such as modeling, clearly lack any real understanding of). Oh, Chris. You are better than this. You are telling me to go away because you have not read about my research in a reputable journal? I'm not t...
by sallyseaver
Sun Dec 31, 2017 3:58 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

Hi sallyseaver Even thou I don't like direct word fighting, I found your arguments strikingly interesting... Way too complex to manage to an uneducated mind like mine, but I'll try to dig down the few references you gave, hopefully not getting lost :lol2: ciao Mario Thank you for the positive comme...
by sallyseaver
Sun Dec 31, 2017 3:46 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

I am very disappointed to learn that you are giving the weight of proof to modeling that you really have no knowledge of. Honestly, I don't have time to educate you on all the things you comment on (and in many cases, such as modeling, clearly lack any real understanding of). I give weight to model...
by sallyseaver
Sun Dec 31, 2017 2:47 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

Hello Sally. I think you've made some valid points in questioning conventional wisdom re star formation, especially in areas like the vacinity of Sag A*. However, at least twice in this thread you have claimed that the young star object CX330 changed from a black hole into a protostellar object. Ca...
by sallyseaver
Sun Dec 31, 2017 2:30 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

In the computer modeling of star formation that you are familiar with, is it possible for the infrared presence of a protostar to emerge in 3 years? No idea. I'm not that familiar with any individual models. I note, however, that there's a slight shifting of the goal posts here. What I originally s...
by sallyseaver
Sat Dec 23, 2017 11:50 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

Really a computer model is only as good as the coding and it makes assumptions that are not necessarily true. Coding isn't usually an issue. Errors here are rare. Perhaps what you mean is that the models are only as good as our understanding of the underlying physics. That's certainly true. What I'...
by sallyseaver
Sat Dec 23, 2017 10:59 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

In the computer modeling of star formation that you are familiar with, is it possible for the infrared presence of a protostar to emerge in 3 years? No idea. I'm not that familiar with any individual models. I note, however, that there's a slight shifting of the goal posts here. What I originally s...
by sallyseaver
Thu Dec 21, 2017 6:38 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

I think that a computer model is only that : a MODEL, and cannot be used to validate any teory. Can be of a great help, to scale such rather *big* problems to a more human scale, but OBSERVATION is the best, if not the only, rule. Also we tend to simplify problems so we can easily handle them. If y...
by sallyseaver
Thu Dec 21, 2017 6:35 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

I am interested to know from other forum participants, which do you think is more compelling or carries more weight for deciding the correctness of the current orthodox model of star-system formation? a) Computer simulations , which Chris says indicates the validity of the orthodox model versus b) ...
by sallyseaver
Thu Dec 21, 2017 1:44 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Re: APOD: Stardust in Aries (2017 Dec 09)

"Collapsing due to self-gravity..." I was wondering if this isn't a way too simple explanation to [cause] these clumps of matter... even at these space scales couldn't it be that there are acting also *other* physical phenomena? I challenge the idea that gravitational collapse can happen ...
by sallyseaver
Wed Dec 20, 2017 5:54 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)
Replies: 27
Views: 52035

Sally's Stars: Split from APOD: Stardust in Aries (2017 Dec 09)

"Collapsing due to self-gravity..." I was wondering if this isn't a way too simple explanation to [cause] these clumps of matter... even at these space scales couldn't it be that there are acting also *other* physical phenomena? I challenge the idea that gravitational collapse can happen ...
by sallyseaver
Fri Dec 01, 2017 2:54 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2017 December
Replies: 114
Views: 140626

Re: Submissions: 2017 December

Will Juno Confirm a New Theory?
http://massvortex.science/home-page/jupiters-ice-layer/
Predicted layers yield the same mass density for Jupiter as what is known: 1.326
Jupiter-Layers-Theory-Competition_Dec2017_Seaver-2.png
by sallyseaver
Fri Dec 01, 2017 7:30 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: M33: Triangulum Galaxy (2017 Nov 30)
Replies: 11
Views: 6605

Re: APOD: M33: Triangulum Galaxy (2017 Nov 30)

Does the size of the existing Black Hole at the center of M33 determine the size of the central bulge? Yes. The bulge takes time to develop in the lifecycle of a galaxy. Once the bulge forms, the mass of the black hole is .1% of the mass of the bulge. This is the updated Magorrian relation, which y...
by sallyseaver
Fri Dec 01, 2017 7:20 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: M33: Triangulum Galaxy (2017 Nov 30)
Replies: 11
Views: 6605

Re: APOD: M33: Triangulum Galaxy (2017 Nov 30)

Does the size of the existing Black Hole at the center of M33 determine the size of the central bulge? Yes. The bulge takes time to develop in the lifecycle of a galaxy. Once the bulge forms, the mass of the black hole is .1% of the mass of the bulge. This is the updated Magorrian relation, which y...
by sallyseaver
Fri Dec 01, 2017 4:52 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: M33: Triangulum Galaxy (2017 Nov 30)
Replies: 11
Views: 6605

Re: APOD: M33: Triangulum Galaxy (2017 Nov 30)

Does the size of the existing Black Hole at the center of M33 determine the size of the central bulge? Yes. The bulge takes time to develop in the lifecycle of a galaxy. Once the bulge forms, the mass of the black hole is .1% of the mass of the bulge. This is the updated Magorrian relation, which y...
by sallyseaver
Sat Nov 25, 2017 11:22 pm
Forum: The Communications Center: Breaking Science News
Topic: UNIGE: Do Dark Matter & Dark Energy Really Exist?
Replies: 3
Views: 2073

Re: UNIGE: Do Dark Matter & Dark Energy Really Exist?

Bystander, thank you for posting about this development.
by sallyseaver
Sat Nov 25, 2017 11:08 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 7822: Stars and Dust Pillars in... (2017 Nov 19)
Replies: 12
Views: 7440

Re: APOD: NGC 7822: Stars and Dust Pillars in... (2017 Nov 19)

What I really like about this image is how it shows how a nebula is raw material for forming stars. And you can see where star formation has used up the surrounding nebula gases. My understanding is that the orange-red gas around the orange crescent shape (that Alexander331 is referring to) is most...
by sallyseaver
Sat Nov 25, 2017 7:21 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 7822: Stars and Dust Pillars in... (2017 Nov 19)
Replies: 12
Views: 7440

Re: APOD: NGC 7822: Stars and Dust Pillars in... (2017 Nov 19)

Right to the brightest star on the top right edge of the picture, after clicking on the image, there is an orange structure. What is it ? Pretty much everything we see in this picture that isn't a star (or a distant galaxy) is the result of energy streaming out from stars pushing against the gas an...
by sallyseaver
Sat Nov 25, 2017 6:46 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 7822: Stars and Dust Pillars in... (2017 Nov 19)
Replies: 12
Views: 7440

Re: APOD: NGC 7822: Stars and Dust Pillars in... (2017 Nov 19)

https://apod.nasa.gov/apod/calendar/S_171119.jpg NGC 7822: Stars and Dust Pillars in Infrared Explanation: Young stars themselves are clearing out their nursery in NGC 7822. ... This field spans around 40 light-years at the estimated distance of NGC 7822 . I tried to reach the astrophotographer, Fr...