Identification and properties of host galaxies of RCR radio sources

Желенкова, О. П.; Soboleva, N. S.; Majorova, E. K.; Темирова, А. В.

doi:10.1134/s1990341313010033

Cited by 16 publications

(14 citation statements)

References 41 publications

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“…For the sources with no available information on redshift, the luminosity was estimated from the activity index in the radio range R r [36] which is marked by ":".…”

Section: Summary Results Of Identifying the Variable Radio Sourcesmentioning

confidence: 99%

Observational manifestations and intrinsic properties of the RCR sources in terms of a unified model

Желенкова

Majorova

2016

Astrophys. Bull.

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We present a summary results of the study of radio sources showing significant variations of integral flux density using the data from the RATAN-600 surveys of 1980-1994 at a frequency of 7.6 cm. The majority of the detected variable sources have flat radio spectra, although there are also all other spectrum types found. Point and compact sources predominate, although all known morphological structures are found in the sample. Variability is detected both in quasars and galaxies. Using the catalog data, we found brightness variations in the optical and/or infrared ranges for a half of host objects of radio sources. We analyzed the properties of nonvariable and variable RCR sources. We compared the ratio of absolute magnitude to radio luminosity for sources with the active nucleus types determined from the optical data. It is found that this parameter is approximately the same for quasars with different radio luminosity. It is minimum for the strongest radio galaxies and grows up to the level characteristic of quasars with the decrease of radio luminosity. Considering that the ratio depends on obscuring properties of a dust torus, such behavior can be explained if we assume that the torus geometry and its optical depth depend on the source long. This parameter is slightly higher among variable sources than among nonvariable ones which counts in favor of the nucleus more open to an observer.

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“…For the sources with no available information on redshift, the luminosity was estimated from the activity index in the radio range R r [36] which is marked by ":".…”

Section: Summary Results Of Identifying the Variable Radio Sourcesmentioning

confidence: 99%

Observational manifestations and intrinsic properties of the RCR sources in terms of a unified model

Желенкова

Majorova

2016

Astrophys. Bull.

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“…Mainly, these are the sources with flux densities of ≤ 30 mJy. The results of optical identification of the radio sources from the RCR catalog are presented in [22]. …”

Section: Rcr Catalogmentioning

confidence: 99%

“…The identification of the radio sources were conducted with the DPOSS [29] and SDSS [30] optical surveys and the LAS UKIDSS [31] and WISE [32] IR-range surveys with the method described in [19,22] using the radio maps of the NVSS [33] and FIRST [34] surveys, and by applying in individual cases the maps of higher angular resolution from the NRAO archive. 5 Identification of the RCR sources were conducted in [22] for all the objects from the initial RCR list [21], but the results were checked with the new SDSS DR10 [35] and UKIDSS DR9 LAS releases.…”

Section: Identification Of the Rcr Radio Sources In The Optical And Imentioning

confidence: 99%

“…5 Identification of the RCR sources were conducted in [22] for all the objects from the initial RCR list [21], but the results were checked with the new SDSS DR10 [35] and UKIDSS DR9 LAS releases. Additional information on the sources from NED, VizieR, and ADS, including spectral redshifts and references to the papers with their determination, is given in the comments on the sources.…”

Section: Identification Of the Rcr Radio Sources In The Optical And Imentioning

confidence: 99%

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Investigation of the RCR catalog sources in the millimeter and submillimeter ranges based on the Planck mission data

et al. 2015

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We have studied the regions of the microwave background radiation maps of the Planck experiment in the neighborhood of the RCR catalog radio sources. From the processed data for bright radio sources in the microwave range, we plotted the calibration curves which allow the brightness of the objects to be measured. For the first time, for 117 objects we obtained estimates of flux density at the millimeter and submillimeter waves, prepared the spectra, conducted identification, and gathered available information from databases. Faint microwave sources, difficult to clear out, additionally contribute to the secondary anisotropy at angular scales smaller than 7 .

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“…We use the RCR (RATAN Cold Refined) catalog [9,10] to look for any response from RC-source direction in millimeter and submillimeter wave length ranges. The RC catalog was obtained during the Cold experiment [9] conducted on the RATAN-600 radio telescope in the 1980s at 3.94 GHz.…”

Section: Rcr-sources On the Planck Mapsmentioning

confidence: 99%

To the problem of the secondary CMB anisotropy separation

et al. 2016

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Abstract.We study contribution to the secondary anisotropy maps of cosmic microwave background (CMB) radiation which difficult to account for faint sources. Two effects are investigated. They are the Sunyaev-Zeldovich effect connected with the inverse Compton scattering of CMB photons on hot electrons of cluster of galaxies, and contamination of the background by weak extragalctic sources. First, we study fields of the Planck CMB maps around radio sources of the RATAN-600 catalog. We see weak microwave sources which make an additional contribution to the secondary anisotropy on angular small scales (< 7 ). An algorithm for selecting candidate objects with the SunyaevZeldovich effect was proposed, based on the use of data on the radio spectral indices and the signal in cosmic-microwave background maps. Second, applying the stacking method, we examine the areas of the CMB maps, constructed according to the Planck Space Observatory data in the neighborhood of different populations of radio sources and giant elliptical galaxies. The samples of objects include giant radio galaxies (GRG), radio sources, selected by the radio spectral index and redshift, as well as the gammaray bursts, used as a secondary comparative sample. The signal from this objects exists on CMB maps and its difference in the neighborhood of GRGs from the other types of objects was discovered.

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Identification and properties of host galaxies of RCR radio sources

Cited by 16 publications

References 41 publications

Observational manifestations and intrinsic properties of the RCR sources in terms of a unified model

Observational manifestations and intrinsic properties of the RCR sources in terms of a unified model

Investigation of the RCR catalog sources in the millimeter and submillimeter ranges based on the Planck mission data

To the problem of the secondary CMB anisotropy separation

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