Astronomy and Astrophysics – Astronomy
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.0305h&link_type=abstract
American Astronomical Society, 188th AAS Meeting, #03.05; Bulletin of the American Astronomical Society, Vol. 28, p.822
Astronomy and Astrophysics
Astronomy
Scientific paper
The OB24 region of M31 lies along the eastern edge of its outer bright spiral structure. Using UBV CCD data and deep narrow-band H-alpha images, all obtained at the Kitt Peak National Observatory, as well as published IRAS and HI maps, we have explored its present population of stars and interstellar material and have deduced aspects of its past star-forming activity. The area, which is 5' x 5' in size, is one of the more active regions in M31, with a total of 25 HII regions (17 of which are newly reported in this study), two or three OB associations, a large stellar complex, and 17 Cepheids, three with unusally-long periods. Both the CMDs and the longer-period Cepheids (which are within the OB associations and HII regions) indicate intense recent and current star-forming activity, while lower-mass stars and Cepheids with shorter periods are found to be more evenly dispersed, representing a stage of activity dated at 30 to 50 million years ago. Much older components are also present, but difficult to age-date with the present observations.
Efremov Yuri
Hodge Paul
No associations
LandOfFree
The OB24 Region of M31 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 The OB24 Region of M31, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The OB24 Region of M31 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1351712