A Normal Stellar Disk in the Galaxy Malin 1
| dc.creator | Barth, A. J. | |
| dc.date | 2006-12-31 | |
| dc.date | 2007-01-03 | |
| dc.date.accessioned | 2026-07-07T11:20:55Z | |
| dc.date.available | 2026-07-07T11:20:55Z | |
| dc.description | Since its discovery, Malin 1 has been considered the prototype and most extreme example of the class of giant low surface brightness disk galaxies. Examination of an archival Hubble Space Telescope I-band image reveals that Malin 1 contains a normal stellar disk that was not previously recognized, having a central I-band surface brightness of mu_0 = 20.1 mag arcsec^-2 and a scale length of 4.8 kpc. Out to a radius of ~10 kpc, the structure of Malin 1 is that of a typical SB0/a galaxy. The remarkably extended, faint outer structure detected out to r~100 kpc appears to be a photometrically distinct component and not a simple extension of the inner disk. In terms of its disk scale length and central surface brightness, Malin 1 was originally found to be a very remote outlier relative to all other known disk galaxies. The presence of a disk of normal size and surface brightness in Malin 1 suggests that such extreme outliers in disk properties probably do not exist, but underscores the importance of the extended outer disk regions for a full understanding of the structure and formation of spiral galaxies. | |
| dc.description | 13 pages, 7 figures. To appear in AJ. Typographical error corrected | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0701018 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0701018 | |
| dc.identifier | Astron.J.133:1085-1091,2007 | |
| dc.identifier | doi:10.1086/511180 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194110 | |
| dc.subject | Astrophysics | |
| dc.title | A Normal Stellar Disk in the Galaxy Malin 1 | |
| dc.type | text |