Unidentified point sources in the IRAS minisurvey
نویسندگان
چکیده
منابع مشابه
Near-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 کاملUnidentified Egret Sources
The Compton Gamma-Ray Observatory was launched in early 1991 and deorbited in June, 2000. Between April 1991 and September 1995, the Energetic Gamma Ray Experiment Telescope (EGRET) detected 416 gamma-ray excesses with a significance of more than 3 σ above the diffuse background emission. After a careful analysis with a maximum-likelihood procedure, only 271 of these sources were included in th...
متن کاملUnidentified Egret Sources in the Galaxy
Identifying γ-ray sources in the Galaxy is hampered by their poor localization, source confusion, and the large variety of potential emitters. Neutron stars and their environment offer various ways to power γ-ray sources: pulsed emission from the open magnetosphere and unpulsed γ rays from the wind nebula and from the cosmic rays accelerated in the supernova remnant. While the latter still awai...
متن کاملPopulation studies of the unidentified EGRET sources
The third EGRET catalog contains a large number of unidentified sources. This subset of objects is expected to include known gamma-ray emitters of Galactic origin such as pulsars and supernova remnants, in addition to an extragalactic population of blazars. However, current data allows the intriguing possibility that some of these objects may represent a new class of yet undiscovered gamma-ray ...
متن کاملExtragalactic water masers in bright IRAS sources
We report the results of a search for 22GHz water maser emission in IRAS-bright galaxies, using the 100-m Effelsberg telescope. In particular, we present the details of four new maser detections (IC 342, NGC 2146, NGC 3556, and Arp 299) and follow-up interferometric studies. A comparison between water maser detection rates derived in the present study and those in previous similar surveys is al...
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: 1984
ISSN: 0004-637X,1538-4357
DOI: 10.1086/184224