First polarimetric images of NML Cyg at 1612 and 1665 MHz
نویسندگان
چکیده
منابع مشابه
The ISO-SWS spectrum of NML Cyg
The high resolution spectrum of NML Cyg observed with the ISO-SWS in its slow-speed grating mode (2.4-45 m) shows a wealth of features never seen before in previous observations. These include ro-vibrational lines of H2O at 2.7 and 6.2 m, of OH between 3 and 3.5 m and a deep absorption band of CO2 at 4.26 m. We also report on the detection of pure rotational emission lines of H2O between 35 and...
متن کاملClassification of polarimetric radar images based on SVM and BGSA
Classification of land cover is one of the most important applications of radar polarimetry images. The purpose of image classification is to classify image pixels into different classes based on vector properties of the extractor. Radar imaging systems provide useful information about ground cover by using a wide range of electromagnetic waves to image the Earthchr('39')s surface. The purpose ...
متن کاملFirst Assessment of Polarimetric Images from Alos - Palsar: Check of Polarimetric Calibration and Assessment of Land - Cover Classification Potential
This study is a first assessment of fully polarimetric SAR data from the Advanced Land Observation Satellite (ALOS) – Phased Array type L-band Synthetic Aperture Radar (PALSAR) over the test-site of Oberpfaffenhofen in Germany. The polarimetric calibration is checked by using corner reflectors on the Oberpfaffenhofen test-site. Further, the fully polarimetric images are classified by using the ...
متن کاملThe Magnetic Field toward the Young Planetary Nebula K 3 - 35
K 3-35 is a planetary nebula (PN) where H2O maser emission has been detected, suggesting that it departed from the proto-PNe phase only some decades ago. Interferometric VLA observations of the OH 18 cm transitions in K 3-35 are presented. OH maser emission is detected in all four ground state lines (1612, 1665, 1667, and 1720 MHz). All the masers appear blueshifted with respect to the systemic...
متن کاملThe ATCA / VLA OH 1612 MHz survey . III . Observations of the Northern Galactic Plane
We present observations of the region between 5 • ≤ ℓ ≤ 45 • and |b| ≤ 3 • , in the OH 1612.231 MHz line, taken from 1993 to 1995 with NRAO's Very Large Array 1 (VLA). These observations are the last part of a larger survey, covering |ℓ| ≤ 45 • and |b| ≤ 3 • , with the Australia Telescope Compact Array (ATCA) and the VLA. The region was systematically observed on a 30 ′ ×30 ′ grid in (ℓ, b) 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: 2004
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2004.07370.x