B3 0045+395 multiwavelength SED

Also known as 1FLAT J004755.2+394857, 1OUNYU J004755+3948.9, 2WHSP J004755.2+394856, 3HSP J004755.2+394858, 5BZB J0047+3948, 5C3.178, BZB J0047+3948.

• Class: BL Lac
• Redshift: z = 0.252
• Position (ICRS): RA 11.98010°, Dec 39.81600°
• Data: 2,214 points (33 upper limits) from 30 catalogues
• Dated data: 2010–2024 (MJD 55210–60519)
• Undated catalogue values: 91
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Largest catalogues (points): ZTF (647), NEOWISE (634), ASAS-SN (621), WISEME (144), PanSTARRS-LC (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=11.9801, dec=39.816, name="B3 0045+395")

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

Other BL Lac objects

• 1ES 0120+340
• RBS 0042
• MS 0205.7+3509
• TXS 2320+343
• S2 0109+22
• 3C 66A

How to cite

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