Hubble captures glittering crowded hub of our Milky Way

Esahubble_opo1801a_1024

esahubble_opo1801a January 12th, 2018

Credit: NASA, ESA, and T. Brown (STScI), W. Clarkson (University of Michigan-Dearborn), and A. Calamida and K. Sahu (STScI)

This image from the NASA/ESA Hubble Space Telescope shows a sparkling jewel box full of stars captured the heart of our Milky Way. Aging red giant stars coexist with their more plentiful younger cousins, the smaller, white, Sun-like stars, in this crowded region of our galaxy’s ancient central hub, or bulge. Most of the bright blue stars in the image are probably recently formed stars located in the foreground, in the galaxy's disc. Astronomers studied 10 000 of these Sun-like stars in archival Hubble images over a nine-year period to unearth clues to our galaxy’s evolution. The study reveals that the Milky Way’s bulge is a dynamic environment of variously aged stars zipping around at different speeds, like travelers bustling about a busy airport. The researchers found that the motions of bulge stars are different, depending on a star’s chemical composition. Stars richer in elements heavier than hydrogen and helium have less disordered motions, but are orbiting around the galactic centre faster than older stars that are deficient in heavier elements. The image is a composite of exposures taken in near-infrared and visible light with Hubble’s Wide Field Camera 3. The observations are part of two Hubble surveys: the Galactic Bulge Treasury Program and the Sagittarius Window Eclipsing Extrasolar Planet Search. The centre of our galaxy is about 26 000 light-years away. Links: NASA Press Release View of the Heart of our Milky Way from Earth

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/opo1801a/

Curator: ESA/Hubble, Baltimore, MD, United States

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
Stars
Subject - Milky Way
Star
Esahubble_opo1801a_128
 

Position Details

Position (ICRS)
RA = 17h 58m 58.0s
DEC = -29° 12’ 20.6”
Orientation
North is 16.9° CCW
Field of View
2.2 x 1.9 arcminutes
Constellation
Sagittarius

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFC3) Optical (V) 555.0 nm
Green Hubble (WFC3) Optical (I) 814.0 nm
Red Hubble (WFC3) Infrared (J) 1.1 µm
Red Hubble (WFC3) Infrared (H) 1.6 µm
Spectrum_base
Blue
Green
Red
Red
Esahubble_opo1801a_1280
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ID
opo1801a
Subject Category
B.3  
Subject Name
Stars
Credits
NASA, ESA, and T. Brown (STScI), W. Clarkson (University of Michigan-Dearborn), and A. Calamida and K. Sahu (STScI)
Release Date
2018-01-12T13:40:40
Lightyears
Redshift
Reference Url
https://esahubble.org/images/opo1801a/
Type
Observation
Image Quality
Good
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3
Color Assignment
Blue, Green, Red, Red
Band
Optical, Optical, Infrared, Infrared
Bandpass
V, I, J, H
Central Wavelength
555, 814, 1100, 1600
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
269.741866748, -29.2057269487
Reference Dimension
3336.0, 2823.0
Reference Pixel
1664.57744103, 822.740854228
Scale
-1.098746e-05, 1.098746e-05
Rotation
16.91692105717
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
https://esahubble.org
Name
Space Telescope Science Institute Office of Public Outreach
Email
outreach@stsci.edu
Telephone
410-338-4444
Address
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr
City
Baltimore
State/Province
MD
Postal Code
21218
Country
United States
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
opo1801a
Metadata Date
2018-01-05T16:54:10-05:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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