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| Query : 1999MNRAS.303L..23S |
1999MNRAS.303L..23S - Mon. Not. R. Astron. Soc., 303, L23-L28 (1999/February-3)
Optical and infrared observations of the luminous quasar PDS 456: a radio-quiet analogue of 3C 273 ?
SIMPSON C., WARD M., O'BRIEN P. and REEVES J.
Abstract (from CDS):
We present infrared photometry and optical and infrared spectroscopy of the recently discovered, extremely luminous nearby quasar PDS 456. A number of broad emission features are seen in the near-infrared, which we are unable to identify. We measure a more accurate redshift from a narrow forbidden emission line and compare the optical–infrared spectrum to that of 3C 273. The close similarity suggests that PDS 456 is a radio-quiet analogue of 3C 273, although radio observations do not support this idea.
Abstract Copyright: 1999 RAS
Journal keyword(s): galaxies: active - galaxies: distances and redshifts - galaxies: photometry - quasars: emission lines - quasars: individual: PDS 456 - radio continuum: galaxies
Simbad objects: 8
| Number of rows : 8 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | HD 225023 | * | 00 02 46.0266921072 | +35 48 55.681958088 | 7.790 | 7.700 | 7.520 | A0 | 57 | 0 | ||
| 2 | 3C 273 | BLL | 12 29 06.6998257176 | +02 03 08.597629980 | 13.05 | 14.830 | 14.11 | ~ | 6022 | 1 | ||
| 3 | BD+33 2642 | pA* | 15 51 59.8854348048 | +32 56 54.329485272 | 9.806 | 10.61 | 10.73 | 10.884 | 10.961 | O7p | 456 | 0 |
| 4 | HD 151372 | PM* | 16 46 52.9969203504 | +02 14 32.861211792 | 7.06 | 6.71 | F3V | 27 | 0 | |||
| 5 | QSO B1725-142 | QSO | 17 28 19.7893499760 | -14 15 55.854918288 | 14.69 | 14.03 | 13.7 | ~ | 362 | 0 | ||
| 6 | HD 161903 | * | 17 48 19.2234974760 | -01 48 29.720389644 | 8.02 | 7.74 | A4IV/V | 63 | 0 | |||
| 7 | * alf Lyr | dS* | 18 36 56.33635 | +38 47 01.2802 | 0.03 | 0.03 | 0.03 | 0.07 | 0.10 | A0V | 2787 | 1 |
| 8 | * alf Aql | dS* | 19 50 46.99855 | +08 52 05.9563 | 1.07 | 0.98 | 0.76 | 0.62 | 0.49 | A7Vn | 919 | 1 |
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