Hubble Space Telescope and VLA observations of two optical continuum knots in the jet of 3C 380
| Autor: | O'Dea, CP, De Vries, W, Biretta, JA, Baum, SA |
|---|---|
| Přispěvatelé: | Kapteyn Astronomical Institute |
| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: |
SPECTRUM RADIO-SOURCES
POLARIZATION M87 JET Astrophysics::High Energy Astrophysical Phenomena galaxies : active Astrophysics::Cosmology and Extragalactic Astrophysics QUASAR 3C380 PERFORMANCE SYNCHROTRON JET galaxies : jets DISCOVERY quasars : individual (3C 380) COMPLETE SAMPLE MERLIN OBSERVATIONS Astrophysics::Galaxy Astrophysics WFPC2 |
| Zdroj: | The Astronomical Journal, 117(3), 1143-1150. IOP PUBLISHING LTD |
| ISSN: | 0004-6256 |
| Popis: | We present Nubble Space Telescope Wide Field Planetary Camera 2 broadband red and linear ramp filter (isolating redshifted [O II] lambda 3727) observations and subarcsecond-resolution 15, 22, and 43 GHz VLA observations of the radio-loud quasar 3C 380. We confirm the report of de Vries et ai. that there is good correspondence between the locations of two optical and radio knots/hot spots in the jet. We show that the optical knots are continuum rather than line emission. The radio-optical spectrum can be fitted either by a normal radio spectrum (alpha similar to -0.8) with a break somewhere in the infrared or by a steeper single power law (alpha similar to -1) (where S-v proportional to v(alpha)). We suggest that the two knots are radiating optical synchrotron emission. This would make the knots in 3C 380 the most luminous optical knots/hot spots currently known. |
| Databáze: | OpenAIRE |
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