4C +06.21 multiwavelength SED

Also known as 1FGL J0457.9+0649, 1OUNYU J045708+0645.1, 3FGL J0457.0+0643, 4C06.21, 5BZQ J0457+0645, BZQ J0457+0645, CRATES J045707+064518, PKS 0454+066, PKS B0454+066.

• Class: FSRQ
• Redshift: z = 0.410
• Position (ICRS): RA 74.28212°, Dec 6.75202°
• Data: 2,760 points (5 upper limits) from 40 catalogues
• Dated data: 2009–2024 (MJD 55036–60613)
• Undated catalogue values: 115
• Frequency range of detections: log ν = 7.9–25.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 36 UVOT and 9 XRT
• Largest catalogues (points): ASAS-SN (925), ZTF (920), NEOWISE (579), PanSTARRS-LC (100), WISEME (64)

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=74.28212, dec=6.75202, name="4C +06.21")

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

Other FSRQs

• PKS 0502+049
• PKS 0440-00
• S3 0458-02
• OG 050
• PKS 0528+134
• PKS 0507+17

How to cite

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