Astron. Astrophys. Suppl. Ser. 137, 101-112

Near-infrared observations of galaxies in Pisces-Perseus

I. $\vec H$-band surface photometry of 174 spirals

G. Moriondo ¹ - C. Baffa ² - S. Casertano ³ - G. Chincarini ⁴ - G. Gavazzi ⁵ - C. Giovanardi ² - L.K. Hunt ⁶ - D. Pierini ⁷ - M. Sperandio ⁴ - G. Trinchieri ⁸

Send offprint request: gmorioarcetri.astro.it

Correspondence to: gmorio@arcetri.astro.it

1 - Dipartimento di Astronomia e Scienza dello Spazio, Università di Firenze, Largo E. Fermi 5, I-50125 Firenze, Italy
2 - Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy
3 - STECF Space Telescope Science Inst., 3700 San Martin Drive, Baltimore, MD 21218, U.S.A.
4 - Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-22055 Merate (CO), Italy
5 - Dipartimento di Fisica, Sez. Astrofisica, Università di Milano, Via Celoria 16, I-20133 Milano, Italy
6 - C.A.I.S.M.I C.N.R., Largo E. Fermi 5, I-50125 Firenze, Italy
7 - Max-Planck-Inst. für Kernphysik, Bereich Astrophysik, Saupfercheckweg 1, Postfach 10 39 80, D-69029 Heidelberg, Germany
8 - Osservatorio Astronomico di Brera, Via Brera 28, I-20121 Milano, Italy

Received November 30, 1998; accepted March 8, 1999

Abstract:

We present near-infrared, H-band (1.65$\mu$m), surface photometry of 174 spiral galaxies in the area of the Pisces-Perseus supercluster. The images, acquired with the ARNICA camera mounted on various telescopes, are used to derive radial profiles of surface brightness, ellipticities, and position angles, together with global parameters such as H-band magnitudes and diameters. The mean relation between H-band isophotal diameter D_21.5 and the B-band D₂₅ implies a B-H color of the outer disk bluer than 3.5; moreover, D_21.5/D₂₅ depends on (global) color and absolute luminosity. The correlations among the various photometric parameters suggest a ratio between isophotal radius D_21.5/2 and disk scale length of $\sim$3.5 and a mean disk central brightness $\simeq 17.5 \,H$-mag arcsec^-2. We confirm the trend of the concentration index C₃₁ with absolute luminosity and, to a lesser degree, with morphological type. We also assess the influence of non-axisymmetric structures on the radial profiles and on the derived parameters.

Key words: galaxies: fundamental parameters -- galaxies: spiral -- infrared: galaxies