Neutral Gas Distribution and Kinematics of the Nearly Face-on Spiral Galaxy NGC 1232 | Zendy

Liese van Zee | Zendy; Jessica Bryant | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Neutral Gas Distribution and Kinematics of the Nearly Face-on Spiral Galaxy NGC 1232

Author(s) -

Liese van Zee,

Jessica Bryant

Publication year - 1999

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/301082

Subject(s) - physics , astrophysics , galaxy rotation curve , spiral galaxy , galaxy , velocity dispersion , barred spiral galaxy , interacting galaxy , grand design spiral galaxy , lenticular galaxy , rotation (mathematics) , spiral (railway) , irregular galaxy , kinematics , astronomy , elliptical galaxy , galaxy formation and evolution , geometry , classical mechanics , mathematical analysis , mathematics

We have analyzed high velocity resolution HI synthesis observations of thenearly face-on Sc galaxy NGC 1232. The neutral gas distribution extends wellbeyond the optical extent of the galaxy. As expected, local peaks in the HIcolumn density are associated with the spiral arms. Further, the HI columndensity drops precipitously near the center of the galaxy. Closed contours inthe velocity field suggest either that the system is warped, or that therotation curve declines. The velocity dispersion is approximately constantthroughout the system, with a median value of 9.9 +/- 1.8 km/s. When correctedfor rotational broadening, there is no indication of a radial trend in theneutral gas velocity dispersion in this galaxy.Comment: 14 pages of text, 10 pages of figures. Accepted to the A

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research