SPECTROSCOPIC STUDY OF EXTENDED STAR CLUSTERS IN DWARF GALAXY NGC 6822
نویسندگان
چکیده
منابع مشابه
Ionized Gas inside the dwarf irregular galaxy NGC 6822 1
We have studied the differences between the diffuse ionized gas (DIG) and the H ii regions along a slit position in the local dwarf irregular galaxy NGC 6822. The slit position passes through the two most prominent H ii regions: Hubble V and Hubble X. Important differences have been found in the excitation, ionization, and [N ii]λ6584Å/Hα and [S ii]λ6717Å/Hα line ratios between the DIG and the ...
متن کاملThe Star Formation History of NGC 6822
Images of five fields in the Local Group dwarf irregular galaxy NGC 6822 obtained with the Hubble Space Telescope in the F555W and F814W filters are presented. Three of the fields lie mostly within the central bar of NGC 6822 where most of the sites of current star formation are concentrated while two other fields sample more of the outer regions of the galaxy. Photometry for the stars in these...
متن کاملVariable stars in the dwarf irregular galaxy NGC 6822 : the photometric catalogue ⋆
Deep B,V time-series photometry obtained with the ESO Very Large Telescope has been used to identify variable stars in the dwarf irregular galaxy NGC 6822. We surveyed a 6.8×6.8 arcmin area of the galaxy and detected a total number of 390 candidate variables with the optimal image subtraction technique (Alard 2000). Light curves on a magnitude scale were obtained for 262 of these variables. Dif...
متن کاملSuper Star Clusters in the Blue Dwarf Galaxy UM 462 ⋆
I present optical observations of the Blue Compact Dwarf Galaxy UM 462. The images of this galaxy show several bright compact sources. A careful study of these sources has revealed their nature of young Super Star Clusters. The ages determined from the analysis of the stellar continuum and Hα are between few and few tens Myr. The total star formation taking place into the clusters is about 0.05...
متن کاملDust and molecules in the Local Group galaxy NGC 6822
Emission from the J=1-0 12 CO transition was detected unambiguously at 4 out of 17 observed positions in the Magellanic irregular galaxy NGC 6822; two more positions yielded marginal 3σ detections. These positions include the HII region complexes Hubble V and Hubble I/III, and two IRAS far-infrared emission peaks not associated with bright HII regions. The bright HII region Hubble X was not det...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/783/1/49