Near-infrared surface photometry of three early-type, edge-on spiral galaxies - NGC 4594, NGC 7123, and NGC 7814

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168216· OSTI ID:7163756

Wainscoat, R J; Hyland, A R; Freeman, K C ^[1]

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1. Mount Stromlo and Siding Spring Observatories, Canberra (Australia)

Near-infrared surface photometry of three early-type, edge-on spiral galaxies is presented. Two of these galaxies, NGC 7814 and NGC 7123, are almost exactly edge-on and have dust lanes which at optical wave-lengths hide much of the disk light. At K (2.2 microns), the disk is seen as emission in each of these galaxies. The bulge light distribution in each of these galaxies is well-fitted by the de Vaucouleurs R exp 1/4 law. Bulge/disk decompositions have been performed for each galaxy, and disk parameters determined. The disks of NGC 7814 and NGC 7123 are a substantially more important component of these galaxies than might be expected from examining optical photographs or optical surface photometry, and the scale height of the dust in the disk is suggested to be very similar to the stellar scale height in order to so effectively eliminate the stellar disk emission at optical wavelengths. The disk of NGC 4594 contains a stellar ring; the dust in NGC 4594 also has a ringlike structure. 10 refs.

• OSTI ID: 7163756
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 348; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
COSMIC DUST
DUSTS
ELECTROMAGNETIC RADIATION
GALAXIES
INFRARED RADIATION
INTERSTELLAR SPACE
MORPHOLOGY
NEAR INFRARED RADIATION
PHOTOMETRY
RADIATIONS
SATELLITES
SPACE
SPIRAL CONFIGURATION