4C +16.39 multiwavelength SED

Also known as 1FLAT J140244.5+155956, 1RXS J140244.4+15595, 5BZB J1402+1559, BZB J1402+1559, MC1400+162, TXS 1400+162.

• Class: BL Lac
• Redshift: z = 0.245
• Position (ICRS): RA 210.68547°, Dec 15.99907°
• Data: 3,168 points (13 upper limits) from 28 catalogues
• Dated data: 2009–2024 (MJD 55000–60527)
• Undated catalogue values: 84
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Largest catalogues (points): ZTF (1,460), ASAS-SN (823), NEOWISE (609), WISEME (117), PanSTARRS-LC (75)

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=210.68547, dec=15.99907, name="4C +16.39")

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

Other BL Lac objects

• LEDA 1410672
• PKS 1424+240
• 1E 1415.6+2557
• 1ES 1440+122
• MS 1402.3+0416
• TXS 1421+048

How to cite

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