| | |
| | |
Stat |
Members: 3645 Articles: 2'506'133 Articles rated: 2609
27 April 2024 |
|
| | | |
|
Article overview
| |
|
Ultra-High-Density Molecular Core and Warped Nuclear Disk in the Deep Potential of Radio-Lobe Galaxy NGC 3079 | Y. Sofue
; J. Koda
; K. Kohno
; S.K. Okumura
; M. Honma
; A. Kawamura
; Judith A. Irwin
; | Date: |
30 Oct 2000 | Subject: | astro-ph | Affiliation: | IoA, U.Tokyo), J. Koda (IoA, U.Tokyo), K. Kohno (NRO, NAOJ), S.K. Okumura (NRO, NAOJ), M. Honma (VERA, NAOJ), A. Kawamura (NRO, NAOJ), and Judith A. Irwin (Queens U. | Abstract: | We have performed high-resolution synthesis observations of the 12CO (J=1-0) line emission from the radio lobe edge-on spiral NGC 3079 using a 7-element mm-wave interferometer at Nobeyama, which consisted of the 45-m telescope and 6-element Array. The molecular nuclear disk (NMD) of 750 pc radius is found to be inclined by 20 degrees from the optical disk, and the NMD has spiral arms. An ultra-high-density molecular core (UHC) was found at the nucleus. The gaseous mass of the UHC within 125 pc radius is as large as about 3 x 10^8 Msun, an order of magnitude more massive than that in the same area of the Galactic Center, and the mean density is as high as approximately 3 x 10^3 H2 cm^-3. A position-velocity diagram along the major axis indicates that the rotation curve starts at a finite velocity exceeding 300 kms already from the nucleus. The surface mass density in the central region is estimated to be as high as about 10^5 Msun pc^-2, producing a very deep gravitational potential. We argue that the very large differential rotation in such a deep potential will keep the UHC gravitationally stable from current star formation. | Source: | arXiv, astro-ph/0010597 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |