Deep extragalactic VLBI-optical survey (DEVOS)

First results

L. Mosoni, S. Frey, L. I. Gurvits, M. A. Garrett, S. T. Garrington, Zlatan Tsvetanov

Research output: Contribution to journalArticle

Abstract

Until recently, VLBI surveys of extragalactic radio sources were limited to total flux densities of ∼100 mJy. We present early results of pilot observations of the Deep Extragalactic VLBI-Optical Survey aimed at improving this limit by at least an order of magnitude. Based on our pilot observations we estimate that a sample of ∼104 faint compact extragalactic sources can now be surveyed on milliarcsecond scales at cm wavelengths. A large fraction of the sample will be optically identified by the Sloan Digital Sky Survey (SDSS). There will be a number of possibilities to use such a large sample, including the study of the cosmological evolution of the population of mJy-level extragalactic radio sources, cosmological tests and astrometric applications.

Original languageEnglish
Pages (from-to)343-346
Number of pages4
JournalBaltic Astronomy
Volume14
Issue number3
Publication statusPublished - 2005
Externally publishedYes

Fingerprint

very long base interferometry
very long baseline interferometry
extragalactic radio sources
radio
flux density
wavelength
estimates
wavelengths

Keywords

  • Astrometry
  • Cosmology: observations
  • Quasars: general
  • Techniques: interferometric

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Mosoni, L., Frey, S., Gurvits, L. I., Garrett, M. A., Garrington, S. T., & Tsvetanov, Z. (2005). Deep extragalactic VLBI-optical survey (DEVOS): First results. Baltic Astronomy, 14(3), 343-346.

Deep extragalactic VLBI-optical survey (DEVOS) : First results. / Mosoni, L.; Frey, S.; Gurvits, L. I.; Garrett, M. A.; Garrington, S. T.; Tsvetanov, Zlatan.

In: Baltic Astronomy, Vol. 14, No. 3, 2005, p. 343-346.

Research output: Contribution to journalArticle

Mosoni, L, Frey, S, Gurvits, LI, Garrett, MA, Garrington, ST & Tsvetanov, Z 2005, 'Deep extragalactic VLBI-optical survey (DEVOS): First results', Baltic Astronomy, vol. 14, no. 3, pp. 343-346.
Mosoni L, Frey S, Gurvits LI, Garrett MA, Garrington ST, Tsvetanov Z. Deep extragalactic VLBI-optical survey (DEVOS): First results. Baltic Astronomy. 2005;14(3):343-346.
Mosoni, L. ; Frey, S. ; Gurvits, L. I. ; Garrett, M. A. ; Garrington, S. T. ; Tsvetanov, Zlatan. / Deep extragalactic VLBI-optical survey (DEVOS) : First results. In: Baltic Astronomy. 2005 ; Vol. 14, No. 3. pp. 343-346.
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