OS 562 multiwavelength SED

Also known as 1FLAT J163813.5+572023, 1Jy 1637+574, 1OUNYU J163813+5720.3, 3FGL J1637.9+5719, 5BZQ J1638+5720, BZQ J1638+5720, CRATES J163813+572029, S41637+574, TXS 1637+574, WMAP56, WMAP5 J1638+5722.

• Class: FSRQ
• Redshift: z = 0.751
• Position (ICRS): RA 249.55607°, Dec 57.33999°
• Data: 6,539 points (7 upper limits) from 39 catalogues
• Dated data: 2006–2024 (MJD 54047–60496)
• Undated catalogue values: 114
• Frequency range of detections: log ν = 8.2–25.4 [Hz] (radio, microwave, infrared, optical, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 30 UVOT and 33 XRT
• Largest catalogues (points): ZTF (3,311), NEOWISE (1,720), ASAS-SN (748), WISEME (464), MMDCXRT (83)

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=249.55607, dec=57.33999, name="OS 562")

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

Other FSRQs

• TXS 1623+578
• TXS 1645+635
• TXS 1629+495
• 4C +47.44
• 4C +51.37
• TXS 1700+685

How to cite

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