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Hubble Spots Beautiful Dwarf Galaxy
Sci-News.com ^ | Nov 5, 2018 | News Staff / Source

Posted on 11/05/2018 8:13:00 AM PST by ETL

ESO 338-4, also known as LEDA 63240 and IRAS 19245-4140, is classified as a blue compact dwarf galaxy.

It resides in the constellation Corona Australis, some 100 million light-years from Earth.

Blue compact dwarf galaxies take their name from the intensely blue star-forming regions that are often found within their cores.

One such region can be seen embedded in ESO 338-4, which is populated with bright young stars voraciously consuming hydrogen.

These massive stars are doomed to a short existence, as despite their vast supplies of hydrogen fuel.

The nuclear reactions in the cores of these stars will burn through these supplies in only millions of years.

The young blue stars nestled within a cloud of dust and gas in the center of this image are the result of a recent galaxy merger between a wandering galaxy and ESO 388-4.

This galactic interaction disrupted the clouds of gas and dust surrounding the galaxy and led to the rapid formation of a new population of stars.

The color image of ESO 338-4 was made from separate exposures taken in the visible, ultraviolet and infrared regions of the spectrum with Hubble’s Advanced Camera for Surveys (ACS), Wide Field Camera 3 (WFC3) and Space Telescope Imaging Spectrograph (STIS).

Five filters were used to sample various wavelengths.

The color results from assigning different hues to each monochromatic image associated with an individual filter.

(Excerpt) Read more at sci-news.com ...


TOPICS: Astronomy; Chit/Chat; Science
KEYWORDS: astronomy; eso3384; iras192454140; leda63240; science
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Image result for Hubble Spots Beautiful Dwarf Galaxy
This Hubble image shows the blue compact dwarf galaxy ESO 338-4
Image credit: NASA / ESA / Hubble
1 posted on 11/05/2018 8:13:00 AM PST by ETL
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To: ETL

Gasp!

It’s a “sized challenged” galaxy, not a dwarf galaxy.


2 posted on 11/05/2018 8:14:36 AM PST by Da Coyote
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"It resides in the constellation Corona Australis, some 100 million light-years from Earth"

[100 million light years = 100 million x 5.9 trillion (miles)]

Image result for constellations

Image result for constellations milky way Corona Australis

Image result for constellation Corona Australis

3 posted on 11/05/2018 8:14:39 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: Da Coyote

Oops, obviously “size” not “sized”.
The Barbera Streisand in me emerged.

Eeeeeuuuuuuuu.


4 posted on 11/05/2018 8:15:39 AM PST by Da Coyote
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To: Da Coyote
Image result for Hubble ESO 338-4
5 posted on 11/05/2018 8:15:42 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: SunkenCiv; brytlea; cripplecreek; decimon; disndat; KoRn; Grammy; steelyourfaith; Mmogamer; ...

Dwarf galaxy Hubble image ping!


6 posted on 11/05/2018 8:21:35 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: ETL

As it looked 100 million years ago.


7 posted on 11/05/2018 8:22:00 AM PST by N. Theknow (Kennedys-Can't drive, can't ski, can't fly, can't skipper a boat-But they know what's best for you.)
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To: ETL

“The nuclear reactions in the cores of these stars will burn through these supplies in only millions of years.”

How can some stars only last a few millions of years, but many stars last many billions of years?


8 posted on 11/05/2018 8:22:28 AM PST by ProtectOurFreedom
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To: ETL
...in only millions of years.

I'll wait....................

9 posted on 11/05/2018 8:23:22 AM PST by Red Badger (FNo-platform us all you want. Ban us all you want. Smear us all you want. You canÂ’t stop an idea...)
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To: ProtectOurFreedom

The candle that burns twice as bright lasts half as long.....................


10 posted on 11/05/2018 8:24:05 AM PST by Red Badger (FNo-platform us all you want. Ban us all you want. Smear us all you want. You canÂ’t stop an idea...)
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To: ProtectOurFreedom

How can some stars only last a few millions of years, but many stars last many billions of years?

Size matters.

The smaller you are the more longevity you have.

Some red dwarves will burn their fuel efficiently over TRILLIONS of years.

Blue giants gobble up their gas with maximum inefficiency and only last millions.

But that’s good. When they explode, they scatter metals.


11 posted on 11/05/2018 8:26:59 AM PST by samtheman (Hold the House, expand in the Senate)
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To: ProtectOurFreedom
How can some stars only last a few millions of years, but many stars last many billions of years?

Depends on their mass. High mass stars burn "blue hot". Our sun is a yellow, much cooler star.

12 posted on 11/05/2018 8:27:12 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: ETL

13 posted on 11/05/2018 8:28:21 AM PST by DannyTN
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To: samtheman

Some red dwarves will burn their fuel efficiently over TRILLIONS of years.

...

Due to the almost complete burning of hydrogen due to convection.

Red dwarfs are theorized to evolve into blue dwarfs. There are no blue dwarfs yet. Not even close.


14 posted on 11/05/2018 8:31:17 AM PST by Moonman62 (Give a man a fish and he'll be a Democrat. Teach a man to fish and he'll be a responsible citizen.)
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To: ETL

We can’t call them Midget Galaxies?........................


15 posted on 11/05/2018 8:35:52 AM PST by Red Badger (FNo-platform us all you want. Ban us all you want. Smear us all you want. You canÂ’t stop an idea...)
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To: samtheman
Size matters. The smaller you are the more longevity you have.

Not necessarily "size", but "mass". There are huge red giant stars that are among the coolest stars.

16 posted on 11/05/2018 8:36:15 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: ProtectOurFreedom
Size matters. The smaller you are the more longevity you have.

Not necessarily "size", but "mass". There are huge red giant stars that are among the coolest stars.

17 posted on 11/05/2018 8:36:25 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: ETL
How can some stars only last a few millions of years, but many stars last many billions of years?

Depends on their mass. High mass stars burn "blue hot". Our sun is a yellow, much cooler star.

Probably should add that hotter stars burn through their fuel faster than cooler stars so the cooler stars are around alot longer than the hotter ones.

18 posted on 11/05/2018 8:37:58 AM PST by plsvn
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To: Da Coyote

“Gasp!

It’s a “sized challenged” galaxy, not a dwarf galaxy.”

Or a ‘Little Galaxy’ galaxy.


19 posted on 11/05/2018 8:39:14 AM PST by WKUHilltopper
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To: ProtectOurFreedom

Some of those Galaxies had big 390 engines which were fuel suckers.


20 posted on 11/05/2018 8:39:27 AM PST by Attention Surplus Disorder (Apoplectic is where we want them)
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