Abstracts - faqs.org

Abstracts

Zoology and wildlife conservation

Search abstracts:
Abstracts » Zoology and wildlife conservation

A young source of optical emission from distant radio galaxies

Article Abstract:

The unified model states that powerful radio galaxies (PRG) and radio-loud quasars (QSR) are the same objects seen at decreasing angles between the radio axis and the line of sight.However, analysis of (O III) 5,007-angstrom luminosities of QSR showed them to be 5-10 times higher than those of similar PRG. To check the validity of the unified model, similar analyses were conducted using (O II) 3,727-angstrom emission line luminosities. The results were in accordance with the predictionsof the unified model.

Author: Hammer, F., Le Fevre, O., Angonin, M.C.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
Stars, Radio astronomy, Quasars

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

A test of the nature of cosmic acceleration using galaxy redshift distortions

Article Abstract:

The observations based on measurement of a radial anisotropy in the clustering pattern reconstructed by galaxy redshift surveys are reported. The results provide insight into the accelerated expansion phase of Universe, which is in agreement with standard cosmological-constant model with low matter density and flat geometry.

Author: Vergani, D., Le Fevre, O., Garilli, B., Scodeggio, M., Bardelli, S., Marinoni, C., Pollo, A., Paltani, S., Bottini, D., Le Brun, V., Tresse, L., Bolzonella, M., Gavignaud, I., Mazure, A., Pozzetti, L., Arnouts, S., Maccagni, D., Vettolani, G., Cappi, A., Guzzo, L., Meneux, B., Radovich, M., Charlot, S., McCracken, H.J., Picat, J.P., Zanichelli, A., Ciliegi, P., Iovino, A., Merighi, R., Zucca, E., Foucaud, S., Ilbert, O., Scaramella, R., Adami, C., Contini, T., Marano, B., Pello, R., Pierleoni, M., Branchini, E., Blaizot, J., De Lucia, G., Bongiorno, A., Cucciati, O., de la Torre, S., Dolag, K., Franzetti, P., Lamareille, F., Memeo, P., Moscardini, L., Perez-Montero, E., Zamorani, G.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2008
Science & research, Galactic evolution, Red shift, Redshift, Gravitational acceleration

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

A large population of galaxies 9 to 12 billion years back in the history of the Universe

Article Abstract:

The results of a flux-limited I-band survey of galaxies at look-back times of 9 to 12 billion years are reported. Results reveal that the cosmic star formation rate representing the volume-averaged production of stars is higher than previously measured at redshifts of 3 to 4.

Author: Le Fevre, O., Garilli, B., Scodeggio, M., Bardelli, S., Franzetti, R., Marinoni, C., Pollo, A., Paltani, S., Bottini, D., Le Brun, V., Tresse, L., Bolzonella, M., Gavignaud, I., Mazure, A., Pozzetti, L., Arnouts, S., Zamoran, G., Maccagni, D., Vettolani, G., Cappi, A., Guzzo, L., Meneux, B., Radovich, M., Charlot, S., McCracken, H.J., Picat, J.P., Zanichelli, A., Ciliegi, P., Iovino, A., Merighi, R., Zucca, E., Bondi, M., Foucaud, S., Ilbert, O., Scaramella, R., Adami, C., Contini, T., Marano, B., Pello, R., Arnaboldi, M.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
United States, Environmental aspects, Cosmic strings

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Subjects list: Research, Observations, Galaxies
Similar abstracts:
  • Abstracts: Doping the undopable. Hydrogen falls into line. Optically programmable electron spin memory using semiconductor quantum dots
  • Abstracts: Specific role of mitochondrial electron transport in blood-stage Plasmodium falciparum. An anaerobic mitochondrion that produces hydrogen
  • Abstracts: Reinforcement of pre-zygotic isolation and karyotype evolution in Agrodiaetus butterflies. Detecting selection using a single genome sequence of M. tuberculosis and P. falciparum
  • Abstracts: A Blueprint for the Oceans: Implications of Two National Commission Reports for Conservation Practitioners. Slow Growth and Lack of Recovery in Overfished Holothurians on the Great Barrier Reef: Evidence from DNA Fingerprints and Repeated Large-Scale Surveys
  • Abstracts: A Quantitative Conservation Approach for the Endangered Butterfly Maculinea alcon. Global Warming, Human Population Pressure, and Viability of the World's Smallest Butterfly
This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.
Some parts © 2023 Advameg, Inc.