Dust and Star Formation
نویسندگان
چکیده
منابع مشابه
Star Formation Rate from Dust Infrared Emission
We examine what types of galaxies the conversion formula from dust infrared (IR) luminosity into the star formation rate (SFR) derived by Kennicutt (1998) is applicable to. The ratio of the observed IR luminosity, LIR, to the intrinsic bolometric luminosity of the newly (. 10 Myr) formed stars, LSF, of a galaxy can be determined by a mean dust opacity in the interstellar medium and the activity...
متن کاملStar formation and selective dust extinction in luminous starburst galaxies
We investigate the star formation and dust extinction properties of very luminous infrared galaxies whose spectra display a strong Hδ line in absorption and a moderate [Oii] emission (e[a] spectrum). This spectral combination has been suggested to be a useful method to identify dusty starburst galaxies at any redshift on the basis of optical data alone. We compare the average e(a) optical spect...
متن کاملExtraplanar Dust and Star Formation in Nearby Edge-On Galaxies
We present high-resolution (∼< 0. 7) ground-based images of the edge-on spiral galaxies NGC 891 (D ∼ 9.5 Mpc) and NGC 4013 (D ∼ 17 Mpc) acquired with the WIYN 3.5-m telescope. These BVI+Hα images reveal complex webs of dusty interstellar material far above the midplanes of both galaxies (0.5 ∼< |z| ∼< 2 kpc) as discussed previously by Howk & Savage (1997). The dusty high-z clouds, visible in ab...
متن کاملDust and Gas as Seeds for Metal-Poor Star Formation
I address the issue of dust and gas as seeds for metal-poor star formation by reviewing what we know about star formation in nearby dwarf galaxies and its relationship to the gas and dust. I (try to) speculate on the extent to which processes in nearby galaxies mimic star formation in the early universe.
متن کاملDust emission and star formation toward a redshift 5.5 QSO
We report observations of the low-luminosity z = 5.50 quasar RD J030117+002025 (RD0301 hereafter) at 250 GHz (1.20 mm) using the Max-Planck Millimeter Bolometer (MAMBO) array at the IRAM 30-meter telescope. The quasar was detected with a 1.2 mm flux density of 0.87 ± 0.20 mJy. The lack of detectable 1.4 GHz radio emission indicates that the millimeter emission is of thermal nature, making RD030...
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: Symposium - International Astronomical Union
سال: 1973
ISSN: 0074-1809
DOI: 10.1017/s0074180900054723