منابع مشابه
EMISSION-LINE OBJECTS FROM A PRELIMINARY UKST OBJECTIVE PRISM SURVEY
A visual search has been made of four fields using United Kingdom 1.2m Schmidt Objective Prism plates with a reciprocal dispersion of 1 180 A/mm at HP. Such plate material is ideally suited to searches for emission-line galaxies. We present a catalogue of 53 emission-line objects, which comprises 45 galaxies, where individual HI1 regions are resolved in 16 bright galaxies; 8 are emission li...
متن کاملThe Missing Cv Population: Results from an Objective Prism Survey
We present the results of a search for cataclysmic variables (CVs) in the Calán-Tololo survey. We detected a total number of 21 CVs, 12 of them are previously unknown objects. Our results suggest that the mismatch between the theoretically predicted sample and the observed one is not due to observational bias but has to be resolved by a revision of the theoretical models. 1. The survey Theoreti...
متن کاملDetection of Spectra in Objective Prism Images Using Neural Networks
Some methods for the automatic detection of spectra in objective prism images have already been developed, but none of them is completely satisfactory, and an interactive session including a visual check is always necessary. In this paper, a neural network approach is proposed to solve this problem. A multi{layer feed forward neural network has been developed to distinguish single, multiple or ...
متن کاملSemi-automated Extraction of Digital Objective Prism Spectra
We describe a method for the extraction of spectra from high dispersion objective prism plates. Our method is a catalogue driven plate solution approach, making use of the Right Ascension and Declination coordinates for the target objects. In contrast to existing methods of photographic plate reduction, we digitize the entire plate and extract spectra off-line. This approach has the advantages ...
متن کاملASTROPHYSICS H α Objective Prism Survey of Abell 1060
As part of a continuing study of the effect of cluster environment on the star formation properties of galaxies, we have undertaken an Hα objective prism survey of the nearby cluster, Abell 1060. We detect 33 galaxies in emission, 24 of which are cluster members. We present new radial velocity measurements and Hα+[N ii] equivalent widths and fluxes for a number of these galaxies. We distinguish...
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: International Astronomical Union Colloquium
سال: 1984
ISSN: 0252-9211
DOI: 10.1017/s0252921100106311