The caption says "It is still unknown which star or stars ionize the red-glowing hydrogen gas". This was identified in 2005 as the heavily obscured O5 V star 2MASS J205551.25+435224.6, which lies behind the LDN 935 dark cloud that appears to separate the North American nebula from the Pelican nebula.
See:
http://adsabs.harvard.edu/cgi-bin/nph-b ... .430..541C
So I think that this caption needs to be updated.
Cheers,
Kevin
Kevin Jardine
Galaxy Map
http://galaxymap.org
North America and Pelican Nebulae (2009 June 30)
- orin stepanek
- Plutopian
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- Location: Nebraska
Re: North America and Pelican Nebulae (2009 June 30)
Orin
Smile today; tomorrow's another day!
Smile today; tomorrow's another day!
Re: North America and Pelican Nebulae (2009 June 30)
Yes, my point exactly - new pic but the same old caption. There's absolutely nothing wrong with recycling captions (or the pic if it's good!) but in this case I think that the caption needs to be updated.
- neufer
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ET, phone home: LDN 935
<<LDN is a mobile phone abbreviation for London.>>
http://antwrp.gsfc.nasa.gov/apod/ap070511.html
http://antwrp.gsfc.nasa.gov/apod/ap980925.html
http://heasarc.gsfc.nasa.gov/W3Browse/n ... g/ldn.htmlkjardine wrote:The caption says "It is still unknown which star or stars ionize the red-glowing hydrogen gas". This was identified in 2005 as the heavily obscured O5 V star 2MASS J205551.25+435224.6, which lies behind the LDN 935 dark cloud that appears to separate the North American nebula from the Pelican nebula.
http://antwrp.gsfc.nasa.gov/apod/ap070511.html
http://antwrp.gsfc.nasa.gov/apod/ap980925.html
Art Neuendorffer