TXS 1252+224 multiwavelength SED

Also known as 1FGL J1254.4+2209, 1FLAT J125433.3+221103, 2FGL J1254.4+2209, 3FGL J1254.5+2210, 3HSP J125433.3+221104, 5BZB J1254+2211, BZB J1254+2211, FRBAJ1254+2211, SDSS J125433.27+221103.7.

• Class: BL Lac
• Redshift: z = 0.420
• Position (ICRS): RA 193.63864°, Dec 22.18435°
• Data: 3,191 points (18 upper limits) from 33 catalogues
• Dated data: 2009–2024 (MJD 54991–60613)
• Undated catalogue values: 77
• 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: 32 UVOT and 2 XRT
• Largest catalogues (points): ZTF (1,704), ASAS-SN (623), NEOWISE (566), WISEME (121), PanSTARRS-LC (78)

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=193.63864, dec=22.18435, name="TXS 1252+224")

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

Other BL Lac objects

• 1ES 1255+244
• ON 246
• TXS 1221+229
• MS 1221.8+2452
• B2 1229+29
• W Comae

How to cite

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