Bow Shock Near Young Star LL Ori

Stsci_2002-05a_1024

stsci_2002-05a March 6th, 2002

Credit: NASA and The Hubble Heritage Team (STScI/AURA)

NASA's Hubble Space Telescope continues to reveal various stunning and intricate treasures that reside within the nearby, intense star-forming region known as the Great Nebula in Orion. One such jewel is the bow shock around the very young star, LL Ori, featured in this Hubble Heritage image. Named for the crescent-shaped wave made by a ship as it moves through water, a bow shock can be created in space when two streams of gas collide. LL Ori emits a vigorous solar wind, a stream of charged particles moving rapidly outward from the star. Our own Sun has a less energetic version of this wind that is responsible for auroral displays on the Earth. The material in the fast wind from LL Ori collides with slow-moving gas evaporating away from the center of the Orion Nebula, which is located to the lower right in this Heritage image. The surface where the two winds collide is the crescent-shaped bow shock seen in the image. Unlike a water wave made by a ship, this interstellar bow shock is a three-dimensional structure. The filamentary emission has a very distinct boundary on the side facing away from LL Ori, but is diffuse on the side closest to the star, a characteristic common to many bow shocks. A second, fainter bow shock can be seen around a star near the upper right-hand corner of the Heritage image. Astronomers have identified numerous shock fronts in this complex star-forming region and are using this data to understand the many complex phenomena associated with the birth of stars. This image was taken in February 1995 as part of the Hubble Orion Nebula mosaic. A close visitor in our Milky Way galaxy, the nebula is only 1,500 light-years from Earth. The filters used in this color composite represent oxygen, nitrogen, and hydrogen emissions.

Provider: Space Telescope Science Institute

Image Source: https://hubblesite.org/contents/news-releases/2002/news-2002-05

Curator: STScI, Baltimore, MD, USA

Image Use Policy: http://hubblesite.org/copyright/

Image Details

Image Type
Observation
Object Name
LL Ori
Subject - Milky Way
Nebula > Appearance > Emission

Distance

Universescale1
1,500 light years
Stsci_2002-05a_128
 

Position Details

Position (ICRS)
RA = 5h 35m 4.2s
DEC = -5° 24’ 57.9”
Orientation
North is 179.5° CCW
Field of View
1.8 x 1.5 arcminutes
Constellation
Orion

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFPC2) Optical (Strömgren y) 547.0 nm
Green Hubble (WFPC2) Optical (OIII) 502.0 nm
Yellow Hubble (WFPC2) Optical (Ha) 656.0 nm
Red Hubble (WFPC2) Optical (NII) 658.0 nm
Spectrum_base
Blue
Green
Yellow
Red
Stsci_2002-05a_1280
×
ID
2002-05a
Subject Category
B.4.2.1  
Subject Name
LL Ori
Credits
NASA and The Hubble Heritage Team (STScI/AURA)
Release Date
2002-03-06T00:00:00
Lightyears
1,500
Redshift
1,500
Reference Url
https://hubblesite.org/contents/news-releases/2002/news-2002-05
Type
Observation
Image Quality
Good
Distance Notes
Distance in Lightyears
Facility
Hubble, Hubble, Hubble, Hubble
Instrument
WFPC2, WFPC2, WFPC2, WFPC2
Color Assignment
Blue, Green, Yellow, Red
Band
Optical, Optical, Optical, Optical
Bandpass
Strömgren y, OIII, Ha, NII
Central Wavelength
547, 502, 656, 658
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
83.76733170417, -5.41607723722
Reference Dimension
1074.00, 895.00
Reference Pixel
383.95337368364, 191.12261904497
Scale
-0.00002752852, 0.00002752852
Rotation
179.53125190867
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
World Coordinate System resolved using PinpointWCS 0.9.2 revision 218+ by the Chandra X-ray Center FITS X FITS Y EPO X EPO Y 905.44 1342.35 605.64 488.48 897.19 1211.83 613.75 620.06 895.82 1189.84 614.65 642.59 472.11 1327.64 1040.00 508.00 643.79 1628.08 870.84 203.00 Center Pixel Coordinates: 537.00 83.77153608417 447.50 -5.42320784714
Creator (Curator)
STScI
URL
http://hubblesite.org
Name
Space Telescope Science Institute Office of Public Outreach
Email
outreach@stsci.edu
Telephone
410-338-4444
Address
3700 San Martin Drive
City
Baltimore
State/Province
MD
Postal Code
21218
Country
USA
Rights
http://hubblesite.org/copyright/
Publisher
STScI
Publisher ID
stsci
Resource ID
STSCI-H-p0205a-f-1074x895.tif
Resource URL
https://mast.stsci.edu/api/latest/Download/file?uri=mast:OPO/product/STSCI-H-p0205a-f-1074x895.tif
Related Resources
http://hubblesite.org/newscenter/archive/releases/2002/05
Metadata Date
2022-07-06T00:00:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
1,500 light years