OC 457 multiwavelength SED

Also known as 1FGL J0137.0+4751, 1FLAT J013658.6+475129, 1Jy 0133+476, 1OUNYU J013659+4751.4, 2FGL J0136.9+4751, 3FGL J0137.0+4752, 5BZQ J0136+4751, BZQ J0136+4751, CRATES J013658+475127, DA55, S40133+476, TXS 0133+476, WMAP5 J0958+4722, WMAP80.

• Class: FSRQ
• Redshift: z = 0.860
• Position (ICRS): RA 24.24415°, Dec 47.85808°
• Data: 3,852 points (5 upper limits) from 35 catalogues
• Dated data: 2007–2025 (MJD 54295–60969)
• Undated catalogue values: 295
• 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: 156 UVOT and 103 XRT
• Largest catalogues (points): ZTF (1,807), ASAS-SN (1,023), MMDCGR (225), WISEME (145), SUFST (103)

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=24.24415, dec=47.85808, name="OC 457")

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

Other FSRQs

• S4 0110+49
• 4C +31.03
• B2 0202+31
• S4 0003+38
• 4C +28.07
• PKS 0149+21

How to cite

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