PKS 2255-282 multiwavelength SED

Also known as 1FGL J2258.0-2757, 1FLAT J225805.9-275821, 1Jy 2255-282, 1OUNYU J225806-2758.3, 2FGL J2258.0-2759, 3FGL J2258.0-2759, 5BZQ J2258-2758, BZQ J2258-2758, CRATES J225805-275823, PKS B2255-282, TXS 2255-282.

• Class: FSRQ
• Redshift: z = 0.926
• Position (ICRS): RA 344.52485°, Dec −27.97257°
• Data: 4,067 points (7 upper limits) from 47 catalogues
• Dated data: 2005–2025 (MJD 53483–60885)
• Undated catalogue values: 411
• Frequency range of detections: log ν = 7.9–25.1 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 28 UVOT and 16 XRT
• Largest catalogues (points): ASAS-SN (1,347), ALMA (866), NEOWISE (589), ZTF (347), MMDCGR (292)

Get the data

• The SED as CSV from the MMDC SED API (docs.mmdc.am).
• In Python, with astro-mmdc:

  from astro_mmdc import MMDC
  sed = MMDC().sed.get(ra=344.52485, dec=-27.97257, name="PKS 2255-282")

• The interactive SED plot, with time filtering and modeling (needs JavaScript).

Other FSRQs

• PKS 2149-306
• PKS 2243-123
• PKS 2345-16
• PKS 2227-08
• PKS 2143-156
• PKS 0035-252

How to cite

Sahakyan, N., Vardanyan, V., Giommi, P., et al. 2024, AJ, 168, 289, doi:10.3847/1538-3881/ad8231 (arXiv:2410.01207).