UBVR CCD photometry of the spiral galaxy NGC 2903

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Publications of the Astronomical Society of the Pacific; (USA)

DOI:https://doi.org/10.1086/132761· OSTI ID:6159486

Hodge, P; Jaderlund, E; Meakes, M ^[1]

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1. Washington Univ., Seattle (USA)

Detailed surface photometry in four colors of the Sc spiral galaxy NGC 2903 is presented. The color structure within the spiral arms shows a gradient both across the arms, caused by age differences in star-forming regions and by local dust lanes, and across the galaxy, caused by the large-scale dust distribution. In general, all arms show indication of a difference in color from that of the disk, most clearly seen for those in the well-ordered northwest region. The magnitude of this difference depends on the luminosity of the arm. Frequently, along the minor axis, color peaks occur at progressively larger radii in (V - R), (B - V), and (U - B), respectively. The most conspicuous anomaly in the arm structure occurs in the outer northeast arm, which divides into two branches, one of which shows the characteristics of only an old population and the other of which shows evidence only of young stars and gas. The well-known hot spots in the nucleus show evidence of the presence of blue stars, dust, and gas emission. 17 refs.

• OSTI ID: 6159486
• Journal Information: Publications of the Astronomical Society of the Pacific; (USA), Journal Name: Publications of the Astronomical Society of the Pacific; (USA) Vol. 102; ISSN PASPA; ISSN 0004-6280
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGE-COUPLED DEVICES
COLOR
CONFIGURATION
COSMIC DUST
COSMIC GASES
DISTRIBUTION
DUSTS
FLUIDS
GALACTIC EVOLUTION
GALAXIES
GALAXY NUCLEI
GASES
LUMINOSITY
MORPHOLOGY
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
SEMICONDUCTOR DEVICES
SPATIAL DISTRIBUTION
SPIRAL CONFIGURATION
STAR EVOLUTION