Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-01-10
Astron.Astrophys.Suppl.Ser. 117 (1996) 417
Astronomy and Astrophysics
Astrophysics
Accepted in Astronomy and Astrophysics (Supplements). 11 pages LaTeX with l-aa style file and 3 figures included. Figure 4 (35
Scientific paper
We present $K'$-band surface photometry of a sample of 31 inclined Sa-Scd galaxies, together with additional $J$- and $H$-band data for four of them. In this first paper of a series, profiles are presented, together with global and isophotal parameters. Our profiles are compared to similar $B$, $R$ and $I$ data collected from other sources. Three galaxies exhibit previously unknown small bars in their center, while in five others, such bars may also be present. Four objects present a narrow elongated feature in their center aligned with their major axis, which could be an inward extension of the disk. A few galaxies display very thin spiral arms. Color-color diagrams indicate that the extinction inside the four galaxies for which we have $JHK'$ images is limited to $A_V < 2$.
Heraudeau Ph.
Mamon Gary A.
Simien Francois
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