High-velocity formaldehyde absorption within 30 arcsec of the Galactic nucleus

Details High-velocity formaldehyde absorption within 30 arcsec of the Galactic nucleus High-velocity formaldehyde absorption within 30 arcsec of the Galactic nucleus

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403l..13p&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 403, no. 1, p. L13-L16.

Astronomy and Astrophysics

Astrophysics

18

Absorption Spectra, Formaldehyde, Galactic Nuclei, Milky Way Galaxy, Astronomical Spectroscopy, Forbidden Bands, Ionized Gases, Point Sources, Very Large Array (Vla)

Scientific paper

VLA observations of the (110 - 111) line of H2CO in absorption within 30 arcsec of the Galactic center point source Sagittarius A* with a resolution of 20.6 x 9.5 arcsec at PA of 4 deg, and an rms noise of 3.5 m Jy/beam are reported. A number of baseline subtractions are performed using different velocity intervals to define the continuum level. In all cases the absorption is definitely present. At positions offset +/- 1 arcmin in latitude from SGR A* there is no evidence for absorption at high velocities. Thus, the high-velocity gas may be close to, but is not coincident with, SGR A*. Taken together with observations of HCO(+), HCN, and forbidden O I, there are now several pieces of evidence indicating that the central cavity at the Galactic center contains a mixture of neutral and ionized gas.

Affiliated with

Also associated with

No associations

Rating

High-velocity formaldehyde absorption within 30 arcsec of the Galactic nucleus does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High-velocity formaldehyde absorption within 30 arcsec of the Galactic nucleus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-velocity formaldehyde absorption within 30 arcsec of the Galactic nucleus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1776622