Detection of an H I disk in Hydra A?

Details Detection of an H I disk in Hydra A? Detection of an H I disk in Hydra A?

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...442l...1d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 442, no. 1, p. L1-L4

Astronomy and Astrophysics

Astrophysics

21

Absorption Spectra, Cooling Flows (Astrophysics), Disk Galaxies, H I Regions, Radio Galaxies, Galactic Clusters, Stellar Spectra, Velocity Distribution

Scientific paper

We present new observations of the H I absorption system seen toward the core of the radio galaxy Hydra A, which is the central galaxy in a cooling flow cluster Abell 780. Our improved spatial (approximately 2 sec) and velocity (approximately 1.4 km/s) resolutions indicate that the absorption arises very close to the nucleus, probably in a gas disk located in the central regions of the galaxy. There is no indication that any of the absorption arises in the cooling flow. The H I absorption is seen only toward the core and is within approximately 100 km/s of the systemic velocity. The absorption covers a velocity range approximately 100 km/s. It can be decomposed into six Gaussian components with widths approximately 10-20 km/s and optical depths approximately 0.1-0.5. No narrow line features (approximately 1 km/s) were detected in Hydra A to a 3 sigma optical depth limit of 0.06.

Affiliated with

Also associated with

No associations

Rating

Detection of an H I disk in Hydra A? 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 Detection of an H I disk in Hydra A?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of an H I disk in Hydra A? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-885011