搜索结果: 1-15 共查到“恒星与银河系 Regions”相关记录20条 . 查询时间(0.078 秒)
The four HII regions in the Sgr A East complex: A, B, C, and D, represent evidence of recent massive star formation in the central ten parsecs. Using Paschen-alpha images taken with HST and 8.4 GHz VL...
2MASS wide field extinction maps: IV. The Orion, Mon R2, Rosette, and Canis Major star forming regions
clouds dust extinction structure individual objects Orion molecular complex
2011/10/21
We present a near-infrared extinction map of a large region (approximately 2200 deg^2) covering the Orion, the Monoceros R2, the Rosette, and the Canis Major molecular clouds. We used robust and optim...
Gas density and star formation in the rarified regions of discs of normal and LSB galaxies
Gas density star formation rarified regions discs normal
2011/10/11
We calculated the radial profiles of the azimuthally averaged midplane gas volume density $\rho_g$ for 11 high surface brightness (HSB) spiral galaxies, 7 low surface brightness (LSB) galaxies and 3 S...
Star formation in self-gravitating disks in active galactic nuclei. I. Metallicity gradients in broad line regions
Star formation self-gravitating disks active galactic Metallicity gradients
2011/10/11
It has been suggested that the high metallicity generally observed in active galactic nuclei (AGNs) and quasars originates from ongoing star formation in the self-gravitating part of accretion disks a...
Probing the Microscopic with the Macroscopic: from Properties of Star Cluster Systems to Properties of Cluster-Forming Regions
Macroscopic: Properties Cluster Systems Cluster-Forming Regions
2011/10/11
To understand how systems of star clusters have reached their presently observed properties constitutes a powerful probe into the physics of cluster formation, without needing to resort to high spatia...
Dissecting high-mass star-forming regions; tracing back their complex formation history
high-mass star-forming regions tracing complex formation
2011/9/26
We present near-infrared JHKs imaging as well as K-band multi-object spectroscopy of the massive stellar content of W3 Main using LUCI at the LBT. We confirm 13 OB stars by their absorption line spect...
Hii regions in ngc 5055. ii. physical properties。
Haystack observations of cs and ch3oh toward star forming regions
Haystack observations cs ch3oh star forming regions
2009/7/10
Haystack observations of cs and ch3oh toward star forming regions。
The star formation history of M33＇s outer regions。
The calibration of the O/H abundance indicators for extragalactic H II regions based on O II recombination lines
extragalactic H II regions O II recombination lines
2009/6/30
The calibration of the O/H abundance indicators for extragalactic H II regions based on O II recombination lines。
From Ultracompact to Extended HII Regions：Cloud Gravity and Stellar Motion
HII Regions Cloud Gravity Stellar Motion
2009/6/16
From Ultracompact to Extended HII Regions：Cloud Gravity and Stellar Motion。
The nature of the very extended emission line regions associated with active galactic nuclei
emission line regions active galactic nuclei
2009/6/11
The nature of the very extended emission line regions associated with active galactic nuclei。
Reanalyzing the he abundance determination in extragalactic H II regions
extragalactic H II regions abundance determination
2009/6/11
Reanalyzing the he abundance determination in extragalactic H II regions。
Iso spectroscopy of ultracompact H II regions：element abundance gradient in the galaxy
H II regions galaxy Iso spectroscopy
2009/6/11
Iso spectroscopy of ultracompact H II regions：element abundance gradient in the galaxy。
Chemical Diffusion in Stellar Convective Regions
Chemical Diffusion Stellar Convective Regions
2009/6/10
Chemical Diffusion in Stellar Convective Regions。