Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-05-13
Astrophys.J. 629 (2005) 757-766
Astronomy and Astrophysics
Astrophysics
To appear in ApJ, August 2005
Scientific paper
10.1086/431640
We present BIMA 3 mm observations of the radio continuum source and the molecular gas disk in the radio loud Fanaroff & Riley Type I (FR I)galaxy NGC3801.We have detected a continuum source in the nucleus and determined that it has a flat millimeter-wave spectrum, suggesting that the emission is non-thermal and due to an AGN; the radio core is not evident in existing VLA observations. We also map the extended 3 mm emission from the previously known radio jets. In addition, we detect CO (1--0) emission associated with the dust disk observed in previous HST images. A velocity gradient is observed, indicating a two kpc radius rotating gas ring or disk oriented roughly perpendicular to the radio jets. The inferred molecular gas mass of the disk is $M(H_{2})=3\times10^{8}M_{\odot}$, about 1% of the dynamical mass. We also find a $\sim 10^8$ M$_\odot$ molecular gas clump not associated with the gas disk. There is evidence that this gas is associated with a merger and is infalling. This suggests that FR I type activity is related to merger activity, as is thought to be the case for FR II type radio galaxies. We also find indications that one of the radio jets is entraining gas from the infalling molecular gas.
Baum Stefi A.
Das Mousumi
O'Dea Christopher P.
Verdoes Kleijn Gijs A.
Vogel Stuart N.
No associations
LandOfFree
Millimeter Wave Observations of the Core-Jet and Molecular Gas in the FR I Radio Galaxy NGC 3801 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 Millimeter Wave Observations of the Core-Jet and Molecular Gas in the FR I Radio Galaxy NGC 3801, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Millimeter Wave Observations of the Core-Jet and Molecular Gas in the FR I Radio Galaxy NGC 3801 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-650345