Detection of CO emission from Dwingeloo 1.

Details Detection of CO emission from Dwingeloo 1. Detection of CO emission from Dwingeloo 1.

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...307..424l&link_type=abstract

Astronomy and Astrophysics, v.307, p.424-426

Astronomy and Astrophysics

Astrophysics

5

Galaxies: Individual: Dwingeloo 1, Galaxies: Ism, Radio Lines: Galaxies

Scientific paper

We report the detection of CO emission from Dwingeloo 1, a nearby barred spiral galaxy discovered recently by Kraan-Korteweg et al. (1994) behind the Milky Way. The CO integrated intensity within the central ~55" is only 1.6 K[T_R_*]km/s, corresponding to an H_2_ mass of 5.5x10^6^D/3Mpc)^2^Msun_ if the Galactic N(H_2_)/I_CO_ conversion factor of 3x10^20^cm^-2^(K.km/s)^-1^ is assumed. The weak CO emission relative to its HI emission could be due to a central molecular hole, an unusual N(H_2_)/I_CO_ conversion factor, or a truly anomalous molecular-to-atomic gas mass ratio in the galaxy.

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