Starship Asterisk*

johnnydeep wrote: ↑Wed Mar 24, 2021 2:48 pm

VictorBorun wrote: ↑Wed Mar 24, 2021 11:30 am
Suppose for a moment, that a cosmologic string (comphessed between 3 voids) is likely to form galaxy clusters with rotation axis along that string, and that main galaxies that sink down to the center of a cluster tend to rotate along the same direction. Than the gas disks should have parallel or almost parallel planes, in general.

NGC 3628 is quite perpendicular to the other two galaxies in the pic. But was it born here at all?

Maybe I'm just too dumb to theorize, but without good evidence - and I don't see any - they're likely just randomly oriented.

VictorBorun wrote: ↑Wed Mar 24, 2021 11:30 am

johnnydeep wrote: ↑Mon Mar 22, 2021 2:51 pm

VictorBorun wrote: ↑Mon Mar 22, 2021 3:00 am As for NGC 3628, is a tail a telltale sign of ramming into the cluster ? Then NGC 3628 would had been born somewhere else and had no reason to align its plane in the first place.

Maybe I'm missing something, but the galactic plane of NGC 3628 does not appear to be aligned with either M65 or M66.

Suppose for a moment, that a cosmologic string (comphessed between 3 voids) is likely to form galaxy clusters with rotation axis along that string, and that main galaxies that sink down to the center of a cluster tend to rotate along the same direction. Than the gas disks should have parallel or almost parallel planes, in general.

NGC 3628 is quite perpendicular to the other two galaxies in the pic. But was it born here at all?

johnnydeep wrote: ↑Mon Mar 22, 2021 2:51 pm

VictorBorun wrote: ↑Mon Mar 22, 2021 3:00 am As for NGC 3628, is a tail a telltale sign of ramming into the cluster ? Then NGC 3628 would had been born somewhere else and had no reason to align its plane in the first place.

Maybe I'm missing something, but the galactic plane of NGC 3628 does not appear to be aligned with either M65 or M66.

VictorBorun wrote: ↑Mon Mar 22, 2021 3:00 am

johnnydeep wrote: ↑Sat Mar 20, 2021 5:18 pm

VictorBorun wrote: ↑Sat Mar 20, 2021 11:06 am

Can the two disks be parallel planes?

1) Judging by visual elliptic form and backlighted dust near cores, the two look like dishes on two shelves before and below the observer. At the distance of d the shelves must be below the observer by h=d*r_short/r_long,
for Messier 65 r_short/r_long= 2.454/8.709, d=? Let's take the mean distance of M66 & NGC 3628, 33 Mly. Then h=9.3 Mly
for Messier 66 r_short/r_long=4.2/9.1, d=31 Mly, h=14.3 Mly
That's 14.3-9.3 = 5 Mly between the shelves.
Is it probable?

2) Some suggest that planes of galaxy disks can correlate at great distances. That quasar jets tend to align with cosmologic strings of galaxy clusters.

Are what two disks parallel? M65 and M66? Based on the fact that both are about 35 Mly distant, and their close angular separation in the sky as seen from Earth (less than 1 degree), and the fact that they don't look at all parallel from our pov, I'd say there's no way their two disk are parallel. NGC 3628 is also about 35 Mly and so the same can be said for its disk in comparison to M65 and M66.

1° at 35 Mly is 0.6 Mly, and my 5 Mly are 8 times greater than that.
Ok. The planes of M65 and M66 are not parallel.

As for NGC 3628, is a tail a telltale sign of ramming into the cluster ? Then NGC 3628 would had been born somewhere else and had no reason to align its plane in the first place.

hypatia wrote: ↑Sun Mar 21, 2021 10:47 pm Am I the only one who thinks 3628 looks like the Eiffel Tower?

johnnydeep wrote: ↑Sat Mar 20, 2021 5:18 pm

VictorBorun wrote: ↑Sat Mar 20, 2021 11:06 am

Ann wrote: ↑Sat Mar 20, 2021 6:46 am In a single image, Francis Bozon captured the "red and blue puffiness" of M66, the undisturbed red ellipsoid of M65, and the puffed-up disk ends and tail of NGC 3628.
Ann

Can the two disks be parallel planes?

1) Judging by visual elliptic form and backlighted dust near cores, the two look like dishes on two shelves before and below the observer. At the distance of d the shelves must be below the observer by h=d*r_short/r_long,
for Messier 65 r_short/r_long= 2.454/8.709, d=? Let's take the mean distance of M66 & NGC 3628, 33 Mly. Then h=9.3 Mly
for Messier 66 r_short/r_long=4.2/9.1, d=31 Mly, h=14.3 Mly
That's 14.3-9.3 = 5 Mly between the shelves.
Is it probable?

2) Some suggest that planes of galaxy disks can correlate at great distances. That quasar jets tend to align with cosmologic strings of galaxy clusters.

Are what two disks parallel? M65 and M66? Based on the fact that both are about 35 Mly distant, and their close angular separation in the sky as seen from Earth (less than 1 degree), and the fact that they don't look at all parallel from our pov, I'd say there's no way their two disk are parallel. NGC 3628 is also about 35 Mly and so the same can be said for its disk in comparison to M65 and M66.

Chris Peterson wrote: ↑Sat Mar 20, 2021 9:26 pm

johnnydeep wrote: ↑Sat Mar 20, 2021 5:11 pm

APOD Robot wrote: ↑Sat Mar 20, 2021 4:05 am The Leo Trio

Explanation: This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the prominent constellation Leo gather here in one astronomical field of view. Crowd pleasers when imaged with even modest telescopes, they can be introduced individually as NGC 3628 (right), M66 (upper left), and M65 (bottom). All three are large spiral galaxies but tend to look dissimilar, because their galactic disks are tilted at different angles to our line of sight. NGC 3628, also known as the Hamburger Galaxy, is temptingly seen edge-on, with obscuring dust lanes cutting across its puffy galactic plane. The disks of M66 and M65 are both inclined enough to show off their spiral structure. Gravitational interactions between galaxies in the group have left telltale signs, including the tidal tails and warped, inflated disk of NGC 3628 and the drawn out spiral arms of M66. This gorgeous view of the region spans over 1 degree (two full moons) on the sky in a frame that covers over half a million light-years at the trio's estimated distance of 30 million light-years. Of course the spiky foreground stars lie well within our own Milky Way.

Two minor issues:

1. The second pic at the link to "everything you need to know about the equinox" makes no sense to me. What is it depicting? Sure, the (red!) sun at every hour, but what are the strange whitish ovoid areas? Are those supposed to be sheared off mountain tops? This image does little to add to the explanation IMHO.

It's a bit out of context by itself. If you look at the Wikipedia Equinox page you'll see that this is one of five related images, showing the Sun arc at different latitudes. Each image features a little island in the center with a tree characteristic of the latitude. This image is the Sun arc at the north pole. So the little island in the middle is the top of an iceberg.

sillyworm 2 wrote: ↑Sat Mar 20, 2021 2:02 pm NGC 3628's tail.Once drawn out..do the stars rotate around the center of the galaxy at the same speed as the stars in the original spiral? Do the stars continue to move outward? Do they start to lag behind and eventually join the spiral structure?

johnnydeep wrote: ↑Sat Mar 20, 2021 5:11 pm

APOD Robot wrote: ↑Sat Mar 20, 2021 4:05 am The Leo Trio

Explanation: This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the prominent constellation Leo gather here in one astronomical field of view. Crowd pleasers when imaged with even modest telescopes, they can be introduced individually as NGC 3628 (right), M66 (upper left), and M65 (bottom). All three are large spiral galaxies but tend to look dissimilar, because their galactic disks are tilted at different angles to our line of sight. NGC 3628, also known as the Hamburger Galaxy, is temptingly seen edge-on, with obscuring dust lanes cutting across its puffy galactic plane. The disks of M66 and M65 are both inclined enough to show off their spiral structure. Gravitational interactions between galaxies in the group have left telltale signs, including the tidal tails and warped, inflated disk of NGC 3628 and the drawn out spiral arms of M66. This gorgeous view of the region spans over 1 degree (two full moons) on the sky in a frame that covers over half a million light-years at the trio's estimated distance of 30 million light-years. Of course the spiky foreground stars lie well within our own Milky Way.

Two minor issues:

1. The second pic at the link to "everything you need to know about the equinox" makes no sense to me. What is it depicting? Sure, the (red!) sun at every hour, but what are the strange whitish ovoid areas? Are those supposed to be sheared off mountain tops? This image does little to add to the explanation IMHO.

VictorBorun wrote: ↑Sat Mar 20, 2021 11:06 am

Ann wrote: ↑Sat Mar 20, 2021 6:46 am In a single image, Francis Bozon captured the "red and blue puffiness" of M66, the undisturbed red ellipsoid of M65, and the puffed-up disk ends and tail of NGC 3628.
Ann

Can the two disks be parallel planes?

1) Judging by visual elliptic form and backlighted dust near cores, the two look like dishes on two shelves before and below the observer. At the distance of d the shelves must be below the observer by h=d*r_short/r_long,
for Messier 65 r_short/r_long= 2.454/8.709, d=? Let's take the mean distance of M66 & NGC 3628, 33 Mly. Then h=9.3 Mly
for Messier 66 r_short/r_long=4.2/9.1, d=31 Mly, h=14.3 Mly
That's 14.3-9.3 = 5 Mly between the shelves.
Is it probable?

2) Some suggest that planes of galaxy disks can correlate at great distances. That quasar jets tend to align with cosmologic strings of galaxy clusters.

APOD Robot wrote: ↑Sat Mar 20, 2021 4:05 am The Leo Trio

Explanation: This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the prominent constellation Leo gather here in one astronomical field of view. Crowd pleasers when imaged with even modest telescopes, they can be introduced individually as NGC 3628 (right), M66 (upper left), and M65 (bottom). All three are large spiral galaxies but tend to look dissimilar, because their galactic disks are tilted at different angles to our line of sight. NGC 3628, also known as the Hamburger Galaxy, is temptingly seen edge-on, with obscuring dust lanes cutting across its puffy galactic plane. The disks of M66 and M65 are both inclined enough to show off their spiral structure. Gravitational interactions between galaxies in the group have left telltale signs, including the tidal tails and warped, inflated disk of NGC 3628 and the drawn out spiral arms of M66. This gorgeous view of the region spans over 1 degree (two full moons) on the sky in a frame that covers over half a million light-years at the trio's estimated distance of 30 million light-years. Of course the spiky foreground stars lie well within our own Milky Way.

VictorBorun wrote: ↑Sat Mar 20, 2021 11:06 am

Ann wrote: ↑Sat Mar 20, 2021 6:46 am In a single image, Francis Bozon captured the "red and blue puffiness" of M66, the undisturbed red ellipsoid of M65, and the puffed-up disk ends and tail of NGC 3628.
Ann

Can the two disks be parallel planes?

1) Judging by visual elliptic form and backlighted dust near cores, the two look like dishes on two shelves before and below the observer. At the distance of d the shelves must be below the observer by h=d*r_short/r_long,
for Messier 65 r_short/r_long= 2.454/8.709, d=? Let's take the mean distance of M66 & NGC 3628, 33 Mly. Then h=9.3 Mly
for Messier 66 r_short/r_long=4.2/9.1, d=31 Mly, h=14.3 Mly
That's 14.3-9.3 = 5 Mly between the shelves.
Is it probable?

2) Some suggest that planes of galaxy disks can correlate at great distances. That quasar jets tend to align with cosmologic strings of galaxy clusters.

Ann wrote: ↑Sat Mar 20, 2021 6:46 am In a single image, Francis Bozon captured the "red and blue puffiness" of M66, the undisturbed red ellipsoid of M65, and the puffed-up disk ends and tail of NGC 3628.
Ann