S4 1851+48 multiwavelength SED

Also known as 1FGL J1852.5+4853, 1OUNYU J185229+4855.7, 2FGL J1852.5+4856, 3FGL J1852.4+4856, 5BZQ J1852+4855, BZQ J1852+4855, CRATES J185229+485549, S41851+488.

• Class: FSRQ
• Redshift: z = 1.250
• Position (ICRS): RA 283.11895°, Dec 48.92986°
• Data: 4,043 points (7 upper limits) from 32 catalogues
• Dated data: 2008–2025 (MJD 54748–60969)
• Undated catalogue values: 88
• 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: 4 UVOT and 2 XRT
• Largest catalogues (points): ZTF (2,128), ASAS-SN (1,453), WISEME (245), PanSTARRS-LC (86), MMDCGR (36)

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=283.11895, dec=48.92986, name="S4 1851+48")

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

Other FSRQs

• S4 1800+44
• OV 591
• 4C +51.37
• S4 1738+49
• S4 1726+45
• B2 1846+32A

How to cite

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