Spitzer 70-micron Confusion Level
نویسندگان
چکیده
Spitzer 70μm confusion measurements are presented based on ultra-deep MIPS-70μm observations of GOODS Hubble Deep Field North (HDFN). The instrument noise for the MIPS-70μm band integrates down with nearly t for the low background HDF-N field. The estimated confusion level is σc = 0.30± 0.15mJy for a limiting flux density of 1.5mJy (q = 5).
منابع مشابه
Spitzer 70 Micron Source Counts in Goods-north
We present ultradeep Spitzer 70mm observations of GOODS-North (Great Observatories Origins Deep Survey). For the first time, the turnover in the 70 mm Euclidean-normalized differential source counts is observed. We derive source counts down to a flux density of 1.2 mJy. From the measured source counts and fluctuation analysis, we estimate a power-law approximation of the faint 70 mm source coun...
متن کاملSpitzer 70 and 160 μ m Observations of the COSMOS Field
We present Spitzer 70 and 160 μm observations of the COSMOS Spitzer survey (S-COSMOS). The data processing techniques are discussed for the publicly released products consisting of images and source catalogs. We present accurate 70 and 160 μm source counts of the COSMOS field and find reasonable agreement with measurements in other fields and with model predictions. The previously reported coun...
متن کاملConfusion of Extragalactic Sources in the Mid- and Far-infrared: Spitzer and Beyond
We use the source counts measured with the Multiband Imaging Photometer for Spitzer at 24, 70, and 160 m to determine the 5 confusion limits due to extragalactic sources: 56 Jy, 3.2 mJy, and 40 mJy at 24, 70, and 160 m, respectively. We also make predictions for confusion limits for a number of proposed far-infrared missions of larger aperture (3.5–10 m diameter). Subject headinggs: galaxies: e...
متن کاملSpitzer Mips Observations of Stars in the Pictoris Moving Group
We present Multiband Imaging Photometer for Spitzer (MIPS) observations at 24 and 70 m for 30 stars, and at 160 m for a subset of 12 stars, in the nearby ( 30 pc), young ( 12 Myr) Pictoris moving group (BPMG). In several cases, the new MIPS measurements resolve source confusion and background contamination issues in the IRAS data for this sample. We find that 7 members have 24 m excesses, imply...
متن کاملFar-infrared Source Counts at 70 and 160 Microns in Spitzer Deep Surveys
We derive galaxy source counts at 70 and 160 m using the Multiband Imaging Photometer for Spitzer (MIPS) to map the Chandra Deep Field–South (CDF-S) and other fields. At 70 m, our observations extend upward about 2 orders of magnitude in flux density from a threshold of 15 mJy, and at 160 m they extend about an order of magnitude upward from 50 mJy. The counts are consistent with previous obser...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008