O-like Stars in the Direction of the North America and Pelican Nebulae

Details O-like Stars in the Direction of the North America and Pelican Nebulae O-like Stars in the Direction of the North America and Pelican Nebulae

2008-09-18

arxiv.org/abs/0809.3229v1

Baltic Astronomy, vol. 17, 143-159, 2008

Astronomy and Astrophysics

Astrophysics

17 pages, 6 figures

Scientific paper

In the area covering the complex of the North America and Pelican nebulae we identified 13 faint stars with J-H and H-Ks color indices which simulate heavily reddened O-type stars. One of these stars is CP05-4 classified as O5 V by Comeron and Pasquali (2005). Combining magnitudes of these stars in the passbands I, J, H, Ks and [8.3] we were able to suspect that two of them are carbon stars and five are late M-type AGB stars. Interstellar extinction in the direction of these stars was estimated from the background red clump giants in the J-H vs. H-Ks diagram and from star counts in the Ks passband. Four or five stars are found to have a considerable probability of being O-type stars, contributing to the ionization of North America and Pelican. If they really are O-type stars, their interstellar extinction A(V) should be from 16 to 35 mag. Two of them seem to be responsible for bright E and J radio rims discovered by Matthews and Goss (1980).

Affiliated with

Also associated with

No associations

Rating

O-like Stars in the Direction of the North America and Pelican Nebulae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with O-like Stars in the Direction of the North America and Pelican Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and O-like Stars in the Direction of the North America and Pelican Nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-282081