Contingut
Imatges
Carregar la teva Imatge
DSS Images Other Images
Articles Relacionats
Central K-band kinematics and line strength maps of NGC 1399
In this paper we present for the first time high spatial resolutionK-band maps of the central kinematical and near-infrared spectralproperties of the giant cD galaxy in the Fornax cluster, NGC 1399. Weconfirm the presence of a central velocity dispersion dip within r ≤0.2 arcsec seen in previous long-slit studies. Our velocity dispersionmaps give evidence of a non-symmetric structure in this central area byshowing three σ peaks to the north-east, south-east and west ofthe galaxy centre. Additionally we measure near-IR line strength indicesat unprecedented spatial resolution in NGC 1399. The most importantfeatures we observe in our 2-dimensional line strength maps are drops inNa I and CO (2-0) line strength in the nuclear region of the galaxy,coinciding spatially with the drop in σ. The observed linestrength and velocity dispersion changes suggest a scenario where thecentre of NGC 1399 harbours a dynamically cold subsystem with a distinctstellar population.Based on observation collected at the ESO Paranal La Silla Observatory,Chile, during the Science Verification of SINFONI.
|
Enviar un nou article
Enllaços Relacionats
- - No s'ha trobat enllaços -
Enviar un nou enllaç
Membre dels grups següents:
|
Dades d'Observació i Astrometria
| Constel·lació: | Reticulum |
| Ascensió Recta: | 03h56m35.35s |
| Declinació: | -61°42'29.2" |
| Magnitud Aparent: | 9.308 |
| Moviment propi RA: | 9 |
| Moviment propi Dec: | 14 |
| B-T magnitude: | 11.289 |
| V-T magnitude: | 9.472 |
Catàlegs i designacions:
|
