A spectroscopic search for red supergiants in the M33 giant H II region NGC 604
نویسندگان
چکیده
منابع مشابه
the search for the self in becketts theatre: waiting for godot and endgame
this thesis is based upon the works of samuel beckett. one of the greatest writers of contemporary literature. here, i have tried to focus on one of the main themes in becketts works: the search for the real "me" or the real self, which is not only a problem to be solved for beckett man but also for each of us. i have tried to show becketts techniques in approaching this unattainable goal, base...
15 صفحه اولNGC 765 - A disturbed H I giant
We present H i spectral line and radio–continuum VLA data of the galaxy NGC765, complemented by optical and Chandra X-ray maps. NGC765 has the largest H i-tooptical ratio known to date of any spiral galaxy and one of the largest known H i discs in absolute size with a diameter of 240 kpc measured at a surface density of 2× 10 atoms cm −2. We derive a total H i mass of MH I = 4.7×10 M , a dynami...
متن کاملGiant Molecular Clouds in M33 Ii – High Resolution Observations
We present CO(1 → 0) observations of 45 giant molecular clouds in M33 made with the BIMA array. The observations have a linear resolution of 20 pc, sufficient to measure the sizes of most GMCs in the sample. We place upper limits on the specific angular momentum of the GMCs and find the observed values to be nearly an order of magnitude below the values predicted from simple formation mechanism...
متن کاملHST - WFPC 2 Observations of the Star Clusters in the Giant HII Regions of M 33
We present a photometric study of the stars in ionizing star clusters embedded in several giant HII regions of M33 (CC93, IC 142, NGC 595, MA2, NGC 604 and NGC 588). Our photometry are based on the HST-WFPC2 images of these clusters. Color-magnitude diagrams and color-color diagrams of these clusters are obtained and are used for estimating the reddenings and ages of the clusters. The luminosit...
متن کاملλ 6300 and Other Diagnostic Emission Lines in the Diffuse Ionized Gas
We present spectroscopic observations of diffuse ionized gas (DIG) in M33 near the H II region NGC 604. We present the first detection of [O I] λ6300 in the DIG of M33, one of the critical lines for distinguishing photo-from shock ionization models. We measure [O I]/Hα in the range of 0.04 to 0.10 and an increase in this ratio with decreasing emission measure. Our measurements of [S II]/Hα and ...
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: Monthly Notices of the Royal Astronomical Society
سال: 1996
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/279.4.1219