S4 1726+45 multiwavelength SED

Also known as 1FGL J1727.3+4525, 1FLAT J172727.7+453039, 1OUNYU J172728+4530.6, 1RXS J172727.8+45303, 2FGL J1727.1+4531, 3FGL J1727.1+4531, 5BZQ J1727+4530, BZQ J1727+4530, CRATES J172728+453049, S41726+455, TXS 1726+455, V809HER, WMAP43, WMAP5 J1727+4530.

• Class: FSRQ
• Redshift: z = 0.720
• Position (ICRS): RA 261.86521°, Dec 45.51104°
• Data: 6,154 points (76 upper limits) from 31 catalogues
• Dated data: 2006–2025 (MJD 54046–60948)
• Undated catalogue values: 81
• Frequency range of detections: log ν = 8.2–25.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 34 UVOT and 17 XRT
• Largest catalogues (points): ZTF (3,965), NEOWISE (1,412), MMDCGR (348), WISEME (188), PanSTARRS-LC (85)

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=261.86521, dec=45.51104, name="S4 1726+45")

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

Other FSRQs

• B3 1708+433
• S4 1738+49
• S4 1800+44
• 4C +51.37
• 4C +47.44
• 3C 345

How to cite

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