Sh 2-239
Coordinates: (178.91°, -20.12°)
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Sh 2-239 is not a HII region but a reflection nebula and a collection of Herbig-Haro objects embedded in the dark cloud LDN 1551. The brightest part of Sh 2-239 is catalogued as the Herbig-Haro object HH 102. It is located near the star T Tauri within the Taurus dark cloud complex, which is inside the Gould belt, our local galactic neighbourhood.
A good recent paper about this region.[1]
Sh 2-239 is a reflection nebula or a Herbig-Haro object embedded in a dust cloud. It is located near the star T Tau.[2]
Sh 2-239 is a reflection nebula or a Herbig-Haro object embedded in a dust cloud. It is located near the star T Tau.[2]
Notes
1. ^ Moriarty-Schieven, Gerald H., Johnstone, Doug, Bally, John, et al. (2006). "Multigenerational Star Formation in L1551", The Astrophysical Journal, Vol. 645, 357-368. [2006ApJ...645..357M]
2. ^ Knapp, G. R., Kuiper, T. B. H., Knapp, S. L., et al. (1976). "CO observations of NGC 1579 /S222/ and S239", The Astrophysical Journal, Vol. 206, 443-451. [1976ApJ...206..443K]
Distance estimates
140 pc [1976ApJ...206..443K]Links
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Most of the sources used to create these nebula descriptions are listed in the
notes section for each description. In some cases,
for example the Avedisova, Humphreys and Reed catalogs, the source is used extensively and is not listed in the
individual nebula descriptions. See this catalog overview
for more information on the catalogs and the general sources used
to create these descriptions and this introduction to HII regions
on the general history of this area of astronomy.
This image was created using the POSS-II/UKSTU data of the Digitized Sky Survey and SuperCOSMOS using the process described here.
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and this acknowledgement taken from the DSS site:
The Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with the permission of these institutions.
The Second Palomar Observatory Sky Survey (POSS-II) was made by the California Institute of Technology with funds from the National Science Foundation, the National Geographic Society, the Sloan Foundation, the Samuel Oschin Foundation, and the Eastman Kodak Corporation.
The UK Schmidt Telescope was operated by the Royal Observatory Edinburgh, with funding from the UK Science and Engineering Research Council (later the UK Particle Physics and Astronomy Research Council), until 1988 June, and thereafter by the Anglo-Australian Observatory. The blue plates of the southern Sky Atlas and its Equatorial Extension (together known as the SERC-J), as well as the Equatorial Red (ER), and the Second Epoch [red] Survey (SES) were all taken with the UK Schmidt.
The "Second Epoch Survey" of the southern sky was made by the Anglo-Australian Observatory (AAO) with the UK Schmidt Telescope. Plates from this survey have been digitized and compressed by the ST ScI. The digitized images are copyright ? 1993-5 by the Anglo-Australian Observatory Board, and are distributed herein by agreement.
The "Equatorial Red Atlas" of the southern sky was made with the UK Schmidt Telescope. Plates from this survey have been digitized and compressed by the ST ScI. The digitized images are copyright ? 1992-5, jointly by the UK SERC/PPARC (Particle Physics and Astronomy Research Council, formerly Science and Engineering Research Council) and the Anglo-Australian Telescope Board, and are distributed herein by agreement.
The compressed files of the "Palomar Observatory - Space Telescope Science Institute Digital Sky Survey" of the northern sky, based on scans of the Second Palomar Sky Survey are copyright ? 1993-1995 by the California Institute of Technology and are distributed herein by agreement. The compressed files of the "Palomar Observatory - Space Telescope Science Institute Digital Sky Survey" of the northern sky, based on scans of the Second Palomar Sky Survey are copyright ? 1993-1995 by the California Institute of Technology and are distributed herein by agreement.