A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis
| dc.creator | Tanaka, Mikito | |
| dc.creator | Chiba, Masashi | |
| dc.creator | Komiyama, Yutaka | |
| dc.creator | Iye, Masanori | |
| dc.creator | Guhathakurta, Puragra | |
| dc.date | 2007-04-25 | |
| dc.date.accessioned | 2026-07-07T07:58:10Z | |
| dc.date.available | 2026-07-07T07:58:10Z | |
| dc.description | We have used Suprime-Cam on the Subaru Telescope to conduct a V- and I-band imaging survey of fields sampling the spheroid of the Andromeda galaxy along its south-east minor axis. Our photometric data are deep enough to resolve stars down to the red clump. Based on a large and reliable sample of red giant stars available from this deep wide-field imager, we have derived metallicity distributions vs. radius and a surface brightness profile over projected distances of R=23-66 kpc from the galaxy's center. The metallicity distributions across this region shows a clear high mean metallicity and a broad distribution ([Fe/H] ~ -0.6 +/- 0.5), and indicates no metallicity gradient within our observed range. The surface brightness profile at R>40 kpc is found to be flatter than previously thought. It is conceivable that this part of the halo samples as yet unidentified, metal-rich substructure. | |
| dc.description | Submitted to ApJL | |
| dc.identifier | https://arxiv.org/abs/0704.3328 | |
| dc.identifier | http://arxiv.org/abs/0704.3328 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/127909 | |
| dc.subject | Astrophysics | |
| dc.title | A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis | |
| dc.type | text |