Nuclear Stellar Disks in Spiral Galaxies | Zendy

A. Pizzella | Zendy; E. M. Corsini | Zendy; L. Morelli | Zendy; M. Sarzi | Zendy; Claudia Scarlata | Zendy; M. Stiavelli | Zendy; F. Bertola | Zendy

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Nuclear Stellar Disks in Spiral Galaxies

Author(s) -

A. Pizzella,

E. M. Corsini,

L. Morelli,

M. Sarzi,

Claudia Scarlata,

M. Stiavelli,

F. Bertola

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/340486

Subject(s) - astrophysics , physics , astronomy

We report evidence for nuclear stellar disks in 3 early-type spirals, namelyNGC 1425, NGC 3898 and NGC 4698, revealed by WFPC2/F606W images out of a sampleof 38 spiral galaxies, selected from the Hubble Space Telescope Data Archive.Adopting the photometric method introduced by Scorza & Bender we derived theircentral surface brightness and scalelength by assuming them to beinfinitesimally thin exponential disks. No nuclear disk was found in barredgalaxies or galaxies of Hubble type later than Sb. The external origin of thedisk in NGC 4698 is strongly suggested by its orthogonal geometrical decouplingwith respect to the host galaxy.Comment: 15 pages, 5 PostScript figures. Accepted for pubblication in Ap

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