Molecular Superbubbles and Outflows from Starburst Galaxy NGC 2146

Details Molecular Superbubbles and Outflows from Starburst Galaxy NGC 2146 Molecular Superbubbles and Outflows from Starburst Galaxy NGC 2146

2008-12-15

arxiv.org/abs/0812.2828v2

PASJ, 2009, Vol.61, No.2, pp.237--250

Astronomy and Astrophysics

Astrophysics

24 pages, 18 figures, accepted by PASJ Vol. 61, No. 2 (change in v2: divide the author list into 4 lines so that every author

Scientific paper

We present results from a deep (1 sigma = 5.7 mJy beam^{-1} per 20.8 km s^{-1} velocity channel) ^{12}CO(1-0) interferometric observation of the central 60" region of the nearby edge-on starburst galaxy NGC 2146 observed with the Nobeyama Millimeter Array (NMA). Two diffuse expanding molecular superbubbles and one molecular outflow are successfully detected. One molecular superbubble, with a size of ~1 kpc and an expansion velocity of ~50 km s^{-1}, is located below the galactic disk; a second molecular superbubble, this time with a size of ~700 pc and an expansion velocity of ~35 km s^{-1}, is also seen in the position-velocity diagram; the molecular outflow is located above the galactic disk with an extent ~2 kpc, expanding with a velocity of up to ~200 km s^{-1}. The molecular outflow has an arc-like structure, and is located at the front edge of the soft X-ray outflow. In addition, the kinetic energy (~3E55 erg) and the pressure (~1 E-12 \pm 1 dyne cm ^{-2}) of the molecular outflow is comparable to or smaller than that of the hot thermal plasma, suggesting that the hot plasma pushes the molecular gas out from the galactic disk. Inside the ~1 kpc size molecular superbubble, diffuse soft X-ray emission seems to exist. But since the superbubble lies behind the inclined galactic disk, it is largely absorbed by the molecular gas.

Affiliated with

Also associated with

No associations

Rating

Molecular Superbubbles and Outflows from Starburst Galaxy NGC 2146 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 Molecular Superbubbles and Outflows from Starburst Galaxy NGC 2146, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular Superbubbles and Outflows from Starburst Galaxy NGC 2146 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-349423