Emission-line galaxies and quasars in the southern hemisphere. I. Description and applications of an objective-prism survey
Journal Article
·
· Astrophys. J., v. 202, no. 3, pp. 591-595
A selection of objects from the first plates of a low-dispersion, objective-prism survey for emission-line galaxies and quasars is used to illustrate the application of the survey to the following lines of research in extragalactic astronomy: quasi-stellar objects, Seyfert galaxies, instabilities in galaxies produced by tidal interaction or explosive events, and rates of star formation and the general chemical evolution of galaxies. Included in the discussion is a description of how the survey provides a new, purely optical, color-independent method for the direct isolation of bright, high-redshift QSOs with strong emission lines (L$alpha$ is often directly visible on the Schmidt- survey plates). The newly discovered objects used for illustration are a radio- quiet QSO of redshift 2.07, a luminous, class 2 Seyfert galaxy, a compact blue emission-line galaxy with a jet or streamer, yet with no obvious interacting companion, and a blue galaxy with H$beta$ flux 50 times that of 30 Doradus, and low metal abundances, which is undergoing a very intense burst of star formation. These objects are to be discussed in greater detail in subsequent papers in this series. (AIP)
- Research Organization:
- Cerro Tololo Inter-American Observatory, La Serena, Chile
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-024121
- OSTI ID:
- 4056954
- Journal Information:
- Astrophys. J., v. 202, no. 3, pp. 591-595, Journal Name: Astrophys. J., v. 202, no. 3, pp. 591-595; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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LUMINOSITY
N56300 --Physics (Astrophysics & Cosmology)--Quasi-stellar
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