Deep extragalactic VLBI-optical survey (DEVOS): First results

L. Mosoni; S. Frey; L. I. Gurvits; M. A. Garrett; S. T. Garrington; Z. Tsvetanov

Deep extragalactic VLBI-optical survey (DEVOS): First results

L. Mosoni^*, S. Frey, L. I. Gurvits, M. A. Garrett, S. T. Garrington, Z. Tsvetanov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	343-346
Number of pages	4
Journal	Baltic Astronomy
Volume	14
Issue number	3
Publication status	Published - 2005
Externally published	Yes

Keywords

Astrometry
Cosmology: observations
Quasars: general
Techniques: interferometric

Cite this

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title = "Deep extragalactic VLBI-optical survey (DEVOS): First results",

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.",

keywords = "Astrometry, Cosmology: observations, Quasars: general, Techniques: interferometric",

author = "L. Mosoni and S. Frey and Gurvits, {L. I.} and Garrett, {M. A.} and Garrington, {S. T.} and Z. Tsvetanov",

year = "2005",

language = "English",

volume = "14",

pages = "343--346",

journal = "Baltic Astronomy",

issn = "1392-0049",

publisher = "Walter de Gruyter GmbH",

number = "3",

}

TY - JOUR

T1 - Deep extragalactic VLBI-optical survey (DEVOS)

T2 - First results

AU - Mosoni, L.

AU - Frey, S.

AU - Gurvits, L. I.

AU - Garrett, M. A.

AU - Garrington, S. T.

AU - Tsvetanov, Z.

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

KW - Astrometry

KW - Cosmology: observations

KW - Quasars: general

KW - Techniques: interferometric

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M3 - Article

AN - SCOPUS:33646857527

SN - 1392-0049

VL - 14

SP - 343

EP - 346

JO - Baltic Astronomy

JF - Baltic Astronomy

IS - 3

ER -

Deep extragalactic VLBI-optical survey (DEVOS): First results

Abstract

Keywords

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