The Gum Catalog
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[ 1 | 11 | 21 | 31 | 41 | 51 | 61 | 71 | 81 ]Gum 11
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Gum 12a
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The Gum nebula is too large to easily create an image of it using either SuperCOSMOS or the Digitized Sky Survey, so this image was taken from Douglas Finkbeiner's composite hydrogen-alpha image of the entire Milky Way.
Gum 12b
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Gum 13
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Gum 14
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You can see a good image of RCW 27 on this Argentine astrophotography site.
Gum 15
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The Diaz et.al. star cluster catalog gives a distance of 838 pc for Collinder 197, so this nebula may in fact be a bit in front of RCW 27.
You can see a spectacular image of RCW 32 / Gum 15 here.
Gum 16
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Gum 17
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You can see a good colour image of RCW 32 and RCW 33 together here, which is linked from Steven Lee's webpage.
Gum 18
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RCW 35 appears to be located at a similar distance as Vela OB1 and is in the same direction as the complex of reflection nebula called Bran 196a-c.
You can see RCW 35 towards the bottom left of this image.
Gum 19
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RCW 34 includes the infrared star cluster [DBS2003] 28.
Oddly, Herb 25 A appears to be listed in SIMBAD twice. The second duplicate entry is under VdBH 25a.
You can see a good Spitzer infrared image here.
Gum 20
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Avedisova places RCW 36 in star formation region SFR 265.12+1.44 with 43 components, including 2 masers, 11 infrared sources, the globule FeSt 2-42 and the reflection nebulae Bran 210A-C.
The RCW 36 cluster can be seen in this 2MASS infrared image.
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Colin Gum, working at Australia's Mount Stromlo observatory in 1951, completed the first major survey of HII regions visible in the southern hemisphere. He published his nebula catalog in 1955. Although Gum's catalog was largely superceded by the RCW catalog published in 1960, many HII regions are still referenced by their Gum numbers even today, so these pages provide an easy reference with cross references to the RCW and Sharpless catalogs.
Most of the images used to illustrate the Gum catalog were created using the
SuperCOSMOS Sky Survey, with red = hydrogen-alpha,
blue = UKST Blue and green = UKST Infrared. Because green represents infrared, the images are not quite
the same as would be seen at purely visual frequencies. Green in these images usually reveals warm dust or red giant stars.
These images were created using the POSS-II/UKSTU data of the
Digitized Sky Survey and
SuperCOSMOS
using the process described here.
According to my correspondence with the Royal Observatory Edinburgh and the Space Telescope Science Institute,
I am allowed to use the POSS-II/UKSTU data to
create and display images for non-commercial purposes
so long as I include this fine print for the SuperCOSMOS data:
Use of these images is courtesy of the UK Schmidt Telescope (copyright in
which is owned by the Particle Physics and Astronomy Research Council of
the UK and the Anglo-Australian Telescope Board) and the Southern Sky Survey
as created by the SuperCOSMOS measuring machine and are reproduced here
with permission from the Royal Observatory Edinburgh.
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.