Near-infrared mapping of spiral galaxies. I - The SB galaxy NGC 2841 - Annular structure in the young disc component

Details Near-infrared mapping of spiral galaxies. I - The SB galaxy NGC 2841 - Annular structure in the young disc component Near-infrared mapping of spiral galaxies. I - The SB galaxy NGC 2841 - Annular structure in the young disc component

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146..297p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 2, May 1985, p. 297-302. Research supported by the British Council an

Astronomy and Astrophysics

Astronomy

14

Astronomical Maps, Disk Galaxies, Galactic Evolution, Galactic Structure, Infrared Astronomy, Spiral Galaxies, Calibrating, Cosmic Dust, Galactic Nuclei, Gas Density, Hydrogen, Interstellar Extinction, Near Infrared Radiation, Radial Distribution, Star Formation Rate, Stellar Evolution

Scientific paper

NGC 2841 has been mapped in the J and K near-infrared bands out to some 10 kpc from its center. Maps and radial profiles in micron(J), micron(K) and J-K are presented, and profiles in B-J and B-K derived. The bulge and disk are very well distinguished, but there is also an indication of a bluer ring in the disk between 2 and 7 kpc galactrocentric distance. This is accentuated when an improved technique for calibrating intragalactic dust reddening, based on H I and H surface densities is applied. This annular region of enhanced star formation rate coincides with the presence of an enhanced H2 distribution, derived from CO measurements by Young and Scoville (1982).

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