Near-infrared photometry of the intermediate age open clusters IC 166 and NGC 7789
| dc.creator | Vallenari, Antonella | |
| dc.creator | Carraro, Giovanni | |
| dc.creator | Richichi, Andrea | |
| dc.date | 1999-10-25 | |
| dc.date.accessioned | 2026-07-07T02:34:02Z | |
| dc.date.available | 2026-07-07T02:34:02Z | |
| dc.description | We present and discuss new photometric data obtained with an IR camera in the J and K pass-bands for the intermediate age open clusters IC 166 (936 stars in total) and NGC 7789 (1030 stars in total). Ic 166 is a poorly studied open cluster for which no IR data was availabele previoulsy, while NGC 7789 is a well studied open cluster. We show that IC 166 is of intermediate age (about 1.0 Gyr), whit a reddening E(V-K) =1.3 (corresponding to E(B-V) = 0.50) and a true distance modulus (m-M)o = 13.25. These values are significantly different from previous determinations. NGC 7789 is found to be a 1.4 Gyr old open cluster. The metallicity derived with the method developed by Tiede et al (1997) is found to be closer to the spectroscopic estimate than previous photometric studies. | |
| dc.description | 8 pages, 10 figures, to be published in Astronomy & Astrophysics | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9910445 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9910445 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15084 | |
| dc.subject | Astrophysics | |
| dc.title | Near-infrared photometry of the intermediate age open clusters IC 166 and NGC 7789 | |
| dc.type | text |