DDO 210 - The actual appearance of a ghost irregular galaxy
Journal Article
·
· Astrophysical Journal; (USA)
- Bologna Universita (Italy) Osservatorio Astronomico, Bologna (Italy)
The stellar population of the irregular galaxy DDO 210 has been resolved down to V = 23.5 on CCD images centered at coordinates rather different from those quoted in the literature. DDO 210 turns out to be highly contaminated by foreground stars and by background galaxies belonging to a distant cluster. The actual stellar population of this irregular appears to be quite faint and red. If the adopted distance modulus is correct, the possible interpretation of the resulting color-magnitude diagram is twofold: either DDO 210 contains only stars older than 1 Gyr, or it contains stars as young as a few Myr, which are affected by a reddening E(B - V) of about 0.4, much larger than that normally attributed to that region of the sky. 16 refs.
- OSTI ID:
- 6481865
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 360; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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