S4 0444+63 multiwavelength SED

Also known as 1FLAT J044923.3+633209, 5BZQ J0449+6332, BZQ J0449+6332, CRATES J044923+633211, GB6 B0444+6326, GB6 J0449+6332, S40444+634, TXS 0444+634.

• Class: FSRQ
• Redshift: z = 0.781
• Position (ICRS): RA 72.34713°, Dec 63.53595°
• Data: 4,356 points (5 upper limits) from 29 catalogues
• Dated data: 2010–2024 (MJD 55236–60609)
• Undated catalogue values: 64
• Frequency range of detections: log ν = 7.9–25.4 [Hz] (radio, microwave, infrared, optical, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 20 UVOT and 8 XRT
• Largest catalogues (points): ASAS-SN (2,447), ZTF (946), NEOWISE (712), WISEME (90), PanSTARRS-LC (61)

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=72.34713, dec=63.53595, name="S4 0444+63")

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

Other FSRQs

• S5 0633+73
• S5 0212+73
• TXS 0724+571
• 4C +71.07
• S5 0016+73
• TXS 0730+504

How to cite

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