NGC 6738
Asterism in the constellation Aquila
NGC 6738 is an astronomical feature that is catalogued as an NGC object . Although listed as an open cluster in some astronomical databases, it may be merely an asterism ; a 2003 paper in the journal Astronomy and Astrophysics describes it as being an "apparent concentration of a few bright stars on patchy background absorption".
References
1 2 3 Kharchenko, N. V.; Piskunov, A. E.; Röser, S.; Schilbach, E.; et al. (August 2005). "Astrophysical parameters of Galactic open clusters" . Astronomy and Astrophysics . 438 (3): 1163– 1173. arXiv :astro-ph/0501674 . Bibcode :2005A& A...438.1163K . doi :10.1051/0004-6361:20042523 . S2CID 9079873 .
1 2 3 Aranda, Ted (2011), 3,000 Deep-Sky Objects: An Annotated Catalogue , The Patrick Moore Practical Astronomy Series, Springer Science & Business Media, p. 429, ISBN 9781441994196
↑ "NGC 6738" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2006-12-21 .
↑ Boeche, C.; Barbon, R.; Henden, A.; Munari, U.; Agnolin, P. (2003). "NGC 6738: Not a real open cluster" . Astronomy and Astrophysics . 406 (3): 893– 898. arXiv :astro-ph/0306093 . Bibcode :2003A& A...406..893B . doi :10.1051/0004-6361:20030834 . S2CID 1433681 .
↑ "DOCdb - NGC 6738" . Deep Sky Observer's Companion. Retrieved 2012-12-17 .
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