North America and Pelican Nebulae (2009 June 30)

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Expand view Topic review: North America and Pelican Nebulae (2009 June 30)

ET, phone home: LDN 935

by neufer » Sat Jul 04, 2009 10:29 pm

<<LDN is a mobile phone abbreviation for London.>>
kjardine 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://heasarc.gsfc.nasa.gov/W3Browse/n ... g/ldn.html
http://antwrp.gsfc.nasa.gov/apod/ap070511.html
http://antwrp.gsfc.nasa.gov/apod/ap980925.html

Re: North America and Pelican Nebulae (2009 June 30)

by bystander » Tue Jun 30, 2009 3:27 pm

Re: North America and Pelican Nebulae (2009 June 30)

by kjardine » Tue Jun 30, 2009 2:54 pm

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.

:D

Re: North America and Pelican Nebulae (2009 June 30)

by bystander » Tue Jun 30, 2009 1:26 pm

Re: North America and Pelican Nebulae (2009 June 30)

by orin stepanek » Tue Jun 30, 2009 1:09 pm

North America and Pelican Nebulae (2009 June 30)

by kjardine » Tue Jun 30, 2009 5:50 am

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

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