منابع مشابه
Shapley-ames Galaxies in the Blue and Infrared
The Shapley-Ames Catalog of 1276 galaxies with B < 12.5 is compared with the Sanders et al. all sky sample of the 629 galaxies with 60 μm flux density > 5.24 Jy. The fraction of Shapley-Ames galaxies that are visible in the IR is found to increase from 0.006 for E and E/S0 galaxies to 0.384 for Sc galaxies. The subset of Shapley-Ames galaxies that are detected in the IR has a median blue lumino...
متن کاملNear-infrared Observations of Iras Minisurvey Galaxies
Near-infrared photometry at /, H, and K has been obtained for 82 galaxies from the IRAS minisurvey, a sample of infrared-selected galaxies. The near-infrared colors of these galaxies are similar to those of normal field spiral galaxies, but cover a larger range inJ — H and H — K. There is evidence of a tighter correlation between the nearand far-infrared emission than exists between the far-inf...
متن کاملluminous galaxies I . Chandra Observations of IRAS 00317 - 2142
We present Chandra observations of the enigmatic galaxy IRAS00317-2142, which is classified as a star-forming galaxy on the basis of the ionization level of its emission lines. However, a weak broad Hα wing and a high X-ray luminosity give away the presence of an active nucleus. The Chandra image reveals a nuclear point source (L (2−10keV) ∼ 6 × 10 41 erg s −1), contributing over 80 % of the ga...
متن کامل350μm observations of local IRAS galaxies using SHARC-II
The cosmologically significant population of dusty galaxies detected at sub-mm and mm wavelengths by SCUBA and MAMBO have played a central part in many of the discussions at this workshop. Obtaining their redshifts is critical in understanding their role in galaxy formation and evolution, but this is a challenging task. Nevertheless, Chapman et al. [1] have made significant progress by obtainin...
متن کاملThe Iras Bright Galaxy Sample . Iii . 1 - 10 Observations and Coadded Iras Data for Galaxies
Galaxies from the IRAS Bright Galaxy Sample with infrared luminosities Z,IR>10 n L0 have been measured at 1.3, 1.6, 2.2, 3.7, and 10 /¿m. In addition, coadded IRAS measurements at all four IRAS bands have been obtained. It is found that an increase in the total infrared luminosity above Lir > 10 L0 is correlated with increased emission from hot dust with characteristic temperatures — 800 K cont...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1984
ISSN: 0004-637X,1538-4357
DOI: 10.1086/184225