Access to Astronomical Catalogues

← Click to display the menu
J/AJ/105/853    Energy distributions of radio galaxies             (Impey+ 1993)

Energy distributions of radio galaxies IMPEY C., GREGORINI L. <Astron. J. 105, 853 (1993)> =1993AJ....105..853I
ADC_Keywords: Galaxies, radio; Infrared sources Abstract: Far-infrared observations of 140 radio galaxies from the 3CR and B2 catalogs are presented. The galaxies span a range of over four order of magnitude in the radio power, from weak nuclear sources in nearby galaxies, to powerful FR II doubled-lobed sources at moderate redshift. Scanned or pointed observations with IRAS detect 38 of the radio galaxies in at least one waveband; 21 are detected at both 60 and 100 µm. The strength of the far-infrared emission is more closely correlated with core radio emission than with total radio emission, and it is independent of the absolute visual magnitude of the host galaxy. The more luminous 3CR galaxies have warmer far infrared emission than the less luminous B2 galaxies. The relationship between radio and far-infrared luminosity is determined in a way that is insensitive to the large number of infrared nondetections. Radio galaxies have far-infrared emission with similar color temperatures to normal ellipticals; however the inferred amounts of cold interstellar material are typical of gas-rich galaxies. Infrared luminous radio galaxies are rare. Only one in 105 ellipticals with MV←17 has a strong enough radio core to have 1011 LSun of far-infrared emission. Indirect arguments indicates that far-infrared emission in radio galaxies represents star formation that is more closely tied to the active nucleus than to the global properties of the galaxy. The far-infrared luminosity function shows good continuity between radio galaxies and radio loud quasars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table12 93 140 B2 and 3CR radio galaxies
Byte-by-byte Description of file: table12
Bytes Format Units Label Explanations
1- 12 A12 --- Name Galaxy name 16- 21 F6.4 --- z Redshift 26- 30 F5.1 mag mv []? Visual magnitude 32- 37 I6 mJy S408 Total radio flux at 408MHz 40 A1 --- l_S5 Limit flag on S5 41- 46 F6.1 mJy S5 Core radio flux at 5GHz 50 A1 --- l_S12 Limit flag on S12 51- 54 I4 mJy S12 []? IRAS flux density at 12 microns 58- 59 I2 mJy e_S12 []? rms uncertainty on S12 64 A1 --- l_S25 Limit flag on S25 65- 68 I4 mJy S25 []? IRAS flux density at 25 microns 70- 71 I2 mJy e_S25 []? rms uncertainty on S25 73 A1 --- l_S60 Limit flag on S60 74- 77 I4 mJy S60 []? IRAS flux density at 60 microns 79- 80 I2 mJy e_S60 []? rms uncertainty on S60 82 A1 --- l_S100 Limit flag on S100 83- 86 I4 mJy S100 []? IRAS flux density at 100 microns 88- 90 I3 mJy e_S100 []? rms uncertainty on S100
Courtesy: Chris Impey
(End) Patricia Bauer [CDS] 05-Jul-1994
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact