OJ 508 multiwavelength SED

Also known as 1FLAT J080839.7+495035, 1Jy 0804+499, 1OUNYU J080840+4950.5, 5BZQ J0808+4950, BZQ J0808+4950, CRATES J080839+495033, QSO B0804+499, S40804+499, SBS0804+499, TXS0804+499B.

• Class: FSRQ
• Redshift: z = 1.434
• Position (ICRS): RA 122.16528°, Dec 49.84348°
• Data: 3,904 points (6 upper limits) from 28 catalogues
• Dated data: 2007–2024 (MJD 54104–60610)
• Undated catalogue values: 92
• Frequency range of detections: log ν = 8.2–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Largest catalogues (points): ZTF (2,226), ASAS-SN (1,499), PanSTARRS-LC (62), OUSXB (20), MMMONITORING4 (18)

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=122.16528, dec=49.84348, name="OJ 508")

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

Other FSRQs

• 87GB 080551.6+535010
• B3 0803+452
• TXS 0730+504
• OJ 451
• S4 0805+41
• TXS 0724+571

How to cite

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