Starship Asterisk*

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

nebula link

http://apod.nasa.gov/apod/ap090630.html

Orin

APOD: 2009 June 30 - The North America and Pelican Nebulae
APOD: 2006 August 16 - The North America and Pelican Nebulas
APOD: 2000 May 1 - The North America Nebula
APOD: June 6, 1996 - The North America Nebula

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.

http://www.universetoday.com/2008/09/14 ... kent-wood/
http://www.pbase.com/kvwood/image/102764429

<<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