HST REVEALS GROWTH PROCESSES OF YOUNG STAR, HERBIG-HARO OBJECT #2

Stsci_1993-17a_1024

stsci_1993-17a April 14th, 1993

Credit: Credit: Dick Schwatrz (Univ. of Missouri-St. Louis), and NASA Credit: Dick Schwatrz (Univ. of Missouri-St. Louis), and NASA

A NASA Hubble Space Telescope (HST) image of a vast cloud of gas being heated by the birth of a new star. This image is being presented at the 182nd meeting of the American Astronomical Society in Berkeley, California. Called Herbig-Haro object #2 (HH-2), the cloud is heated by shock waves from jets of high speed gas being ejected from a newborn star. Because the star itself is embedded in a dusty cocoon, HH-2 provides the only visible clues to physical processes occurring in the young star. The Hubble observations made with the Wide Field/Planetary Camera WF/PC) provide new insight into similar events that probably occurred when our Sun and Solar System formed 4.6 billion years ago. HH-2 lies at a distance of about 1,500 light-years, in a star-forming region of the constellation Orion. The object is located at the leading edge of a supersonic gas flow that emanates from a young star located about 1/2 light-year from the object. The star is detectable only with infrared and radio telescopes. The high-speed jets that create HH-2 form as a young star contracts under its own gravitational pull. The star reaches a stage where it releases a strong outflow of gas. A thick disk of cool gas and dust around the star, perhaps coupled with a strong magnetic field, forces the hot gas to squirt outward along the system's rotational axis. This forms a pair of narrow jets that plow through the gas of the parent cloud in the star formation region. The supersonic flow forms strong shock waves, heating gas in the parent cloud to temperatures more than 200,000 degrees Fahrenheit (93,000 degrees Celsius). Though a cocoon of dust obscures the star from view, the effects of the jets can be seen across great distances. The hot gas radiates energy in visible light associated with atoms of hydrogen, oxygen, nitrogen, sulfur, and other common elements, forming the structure of a Herbig-Haro object.

Provider: Space Telescope Science Institute

Image Source: https://hubblesite.org/contents/news-releases/1993/news-1993-17

Curator: STScI, Baltimore, MD, USA

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

Image Details

Image Type
Observation
Object Name
HH-2
Subject - Milky Way
Star > Evolutionary Stage > Young Stellar Object

Distance

Universescale1
1,500 light years
Stsci_1993-17a_128
 

Position Details

Position (ICRS)
RA = 5h 36m 23.4s
DEC = -6° 47’ 23.6”
Orientation
North is 15.6° CCW
Field of View
0.2 x 0.2 arcminutes
Constellation
Orion

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFPC) Optical (OIII) 502.0 nm
Green Hubble (WFPC) Optical (Ha) 656.0 nm
Red Hubble (WFPC) Optical (SII) 673.0 nm
Spectrum_base
Blue
Green
Red
Stsci_1993-17a_1280
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ID
1993-17a
Subject Category
B.3.1.2  
Subject Name
HH-2
Credits
Credit: Dick Schwatrz (Univ. of Missouri-St. Louis), and NASA Credit: Dick Schwatrz (Univ. of Missouri-St. Louis), and NASA
Release Date
1993-04-14T00:00:00
Lightyears
1,500
Redshift
1,500
Reference Url
https://hubblesite.org/contents/news-releases/1993/news-1993-17
Type
Observation
Image Quality
Good
Distance Notes
Light years
Facility
hubble, hubble, hubble
Instrument
WFPC, WFPC, WFPC
Color Assignment
Blue, Green, Red
Band
Optical, Optical, Optical
Bandpass
OIII, Ha, SII
Central Wavelength
502, 656, 673
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
84.09768639214, -6.78989830341
Reference Dimension
2461.00, 2395.00
Reference Pixel
-259.89033177843, 1715.19170198942
Scale
-0.00000139823, 0.00000139823
Rotation
15.55951215218
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 587.24 510.10 1471.79 1443.57 553.88 437.82 1100.31 851.10 513.57 439.21 719.44 879.31 536.38 412.60 896.31 632.61 477.71 480.94 407.91 1260.01 627.92 538.31 1856.35 1711.34 616.32 508.66 1733.04 1441.56 Center Pixel Coordinates: 1230.50 84.09597852297 1197.50 -6.79105098311
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-p9317a-f-2461x2395.tif
Resource URL
https://mast.stsci.edu/api/latest/Download/file?uri=mast:OPO/product/STSCI-H-p9317a-f-2461x2395.tif
Related Resources
http://hubblesite.org/newscenter/archive/releases/1993/09
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