Molecular halo of M82

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/161871· OSTI ID:6592572

Stark, A A; Carlson, E R

The relative strengths of J = 1..-->..0 /sup 12/CO, /sup 13/CO, and C/sup 18/O and J = 2..-->..1 /sup 12/CO lines indicate that the CO emission from M82 is optically thin compared to other galaxies. A 30 point map of /sup 12/CO J = 1..-->..0 spectra taken on a 30'' grid with a 100'' beam is presented, along with major- and minor-axis spatial velocity diagrams. There seems to be CO emission on the minor axis that is spatially extended beynd the stellar disk, at velocities of 150 to 220 km s/sup -1/. This emission may originate in the dusty filaments above and below the stellar disk. If confirmed, this would be the first detection of molecular emission not confined to the disk of a galaxy. The relative strengths of the /sup 13/CO and C/sup 18/O lines are consistent with terrestrial isotope ratios.

• Research Organization: AT and T Bell Laboratories, Holmdel, New Jersey
• OSTI ID: 6592572
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 279:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC DUST
DUSTS
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
GALAXIES
INTERSTELLAR GRAINS
ISOTOPE RATIO
ISOTOPES
OXIDES
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PARTICLES
SPECTRA