Abstract
In a J, H, and Ks band survey of the Galactic center region over an area of 2° x 5°, we have found many dark clouds, among which a distinguished chain of dark clouds can be identified with a quiescent CO cloud. The distances of the clouds are estimated to be 3.2-4.2kpc, corresponding to the Norma arm, by our new method for determining the distances to dark clouds using the cumulative number of stars against the J - Ks color. By adopting these estimated distances, the size and total mass of the cloud are estimated to be ̃ 70 pc in length and 6 x 10 4 M G, respectively. Three compact H II regions exist in the cloud, indicating that star-forming activities are going on at the cores of the quiescent CO cloud on the spiral arm.
| Original language | English |
|---|---|
| Pages (from-to) | 283-290 |
| Number of pages | 8 |
| Journal | Publications of the Astronomical Society of Japan |
| Volume | 61 |
| Issue number | 2 |
| Publication status | Published - 2009 Apr 25 |
| Externally published | Yes |
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Keywords
- ISM: clouds
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
A chain of dark clouds in projection against the galactic center. / Nagayama, Takahiro; Sato, Shuji; Nishiyama, Shogo; Murai, Yuka; Nagata, Tetsuya; Hatano, Hirofumi; Kurita, Mikio; Tamura, Motohide; Nakajima, Yasushi; Sugitani, Koji; Oka, Tomoharu; Sofue, Yoshiaki.
In: Publications of the Astronomical Society of Japan, Vol. 61, No. 2, 25.04.2009, p. 283-290.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A chain of dark clouds in projection against the galactic center
AU - Nagayama, Takahiro
AU - Sato, Shuji
AU - Nishiyama, Shogo
AU - Murai, Yuka
AU - Nagata, Tetsuya
AU - Hatano, Hirofumi
AU - Kurita, Mikio
AU - Tamura, Motohide
AU - Nakajima, Yasushi
AU - Sugitani, Koji
AU - Oka, Tomoharu
AU - Sofue, Yoshiaki
PY - 2009/4/25
Y1 - 2009/4/25
N2 - In a J, H, and Ks band survey of the Galactic center region over an area of 2° x 5°, we have found many dark clouds, among which a distinguished chain of dark clouds can be identified with a quiescent CO cloud. The distances of the clouds are estimated to be 3.2-4.2kpc, corresponding to the Norma arm, by our new method for determining the distances to dark clouds using the cumulative number of stars against the J - Ks color. By adopting these estimated distances, the size and total mass of the cloud are estimated to be ̃ 70 pc in length and 6 x 10 4 M G, respectively. Three compact H II regions exist in the cloud, indicating that star-forming activities are going on at the cores of the quiescent CO cloud on the spiral arm.
AB - In a J, H, and Ks band survey of the Galactic center region over an area of 2° x 5°, we have found many dark clouds, among which a distinguished chain of dark clouds can be identified with a quiescent CO cloud. The distances of the clouds are estimated to be 3.2-4.2kpc, corresponding to the Norma arm, by our new method for determining the distances to dark clouds using the cumulative number of stars against the J - Ks color. By adopting these estimated distances, the size and total mass of the cloud are estimated to be ̃ 70 pc in length and 6 x 10 4 M G, respectively. Three compact H II regions exist in the cloud, indicating that star-forming activities are going on at the cores of the quiescent CO cloud on the spiral arm.
KW - ISM: clouds
UR - http://www.scopus.com/inward/record.url?scp=67650701743&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67650701743&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:67650701743
VL - 61
SP - 283
EP - 290
JO - Publication of the Astronomical Society of Japan
JF - Publication of the Astronomical Society of Japan
SN - 0004-6264
IS - 2
ER -