A Waterfall of Stars
esahubble_potw2044a November 2nd, 2020
Credit: ESA/Hubble & NASA, R. TullyAcknowledgement: Gagandeep Anand
The galaxy UGCA 193, seen here by the NASA/ESA Hubble Space Telescope, is a galaxy in the constellation of Sextans (The Sextant). Looking rather like a waterfall, UGCA 193 appears to host many young stars, especially in its lower portion, creating a striking blue haze and the sense that the stars are falling from above. The blue colour of UGCA 193 indicates the stars that we see are hot some with temperatures exceeding 6 times that of our Sun. We know that cooler stars appear to our eyes more red, and hotter stars appear more blue. As the mass and surface temperature of a star, and therefore its colour, are linked, heavier stars are able to burn at higher temperatures resulting in a blue glow from their surface.
Provider: Hubble Space Telescope | ESA
Image Source: https://www.spacetelescope.org/images/potw2044a/
Curator: ESA/Hubble, Garching bei München, None, Germany
Image Use Policy: Creative Commons Attribution 4.0 International License
- ID
- potw2044a
- Subject Category
- C.5.1.1
- Subject Name
- UGCA 193
- Credits
- ESA/Hubble & NASA, R. TullyAcknowledgement: Gagandeep Anand
- Release Date
- 2020-11-02T06:00:00
- Lightyears
- Redshift
- Reference Url
- https://www.spacetelescope.org/images/potw2044a/
- Type
- Observation
- Image Quality
- Distance Notes
- NED
- Facility
- Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
- Instrument
- ACS, ACS, ACS, ACS
- Color Assignment
- Blue, Green, Green, Red
- Band
- Optical, Optical, Optical, Optical
- Bandpass
- V, V, I, I
- Central Wavelength
- 606, 606, 814, 814
- Start Time
- Integration Time
- Dataset ID
- None, None, None, None
- Notes
- Coordinate Frame
- ICRS
- Equinox
- J2000
- Reference Value
- 150.649228644, -6.01751737505
- Reference Dimension
- 6462.0, 6616.0
- Reference Pixel
- 3231.0, 3308.0
- Scale
- -8.32735007557e-06, 8.32735007557e-06
- Rotation
- -1.719999999999986
- Coordinate System Projection:
- TAN
- Quality
- Full
- FITS Header
- SIMPLE = T / conforms to FITS standard BITPIX = -32 / array data type NAXIS = 2 / number of array dimensions NAXIS1 = 7038 NAXIS2 = 7168 CTYPE1 = 'RA---TAN' CTYPE2 = 'DEC--TAN' EQUINOX = 2000 CRVAL1 = 150.649807176 CRVAL2 = -6.017373820 CRPIX1 = 3519.5000 CRPIX2 = 3584.5000 CDELT1 = -0.000008333 CDELT2 = 0.000008333 CROTA2 = 358.323411888 END
- Notes
- Creator (Curator)
- ESA/Hubble
- URL
- http://www.spacetelescope.org
- Name
- Telephone
- Address
- Karl-Schwarzschild-Strasse 2
- City
- Garching bei München
- State/Province
- None
- Postal Code
- D-85748
- Country
- Germany
- Rights
- Creative Commons Attribution 4.0 International License
- Publisher
- ESA/Hubble
- Publisher ID
- esahubble
- Resource ID
- potw2044a
- Resource URL
- http://www.spacetelescope.org/static/archives/images/original/potw2044a.tif
- Related Resources
- Metadata Date
- 2020-10-28T15:33:48.141295
- Metadata Version
- 1.1
Detailed color mapping information coming soon...
