S3 1741+19 multiwavelength SED

Also known as 1FGL J1744.2+1934, 1OUNYU J174358+1935.1, 2FGL J1744.1+1934, 2FHL J1743.9+1933, 2WHSP J174357.7+193508, 3FGL J1743.9+1934, 3HSP J174357.8+193509, 5BZG J1743+1935, BZB J1743+1935, CRATES J174358+193509, NPM1G+19.0510.

• Class: BL Lac
• Redshift: z = 0.08
• Position (ICRS): RA 265.99097°, Dec 19.58584°
• Data: 7,203 points (11 upper limits) from 40 catalogues
• Dated data: 1998–2025 (MJD 51082–60969)
• Undated catalogue values: 293
• Frequency range of detections: log ν = 7.9–26.2 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 188 UVOT and 164 XRT
• Largest catalogues (points): ZTF (3,801), ASAS-SN (2,532), MMDCXRT_ORBIT (156), SUFST (155), MMDCXRT (142)

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=265.99097, dec=19.58584, name="S3 1741+19")

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

Other BL Lac objects

• 1H 1720+117
• OT 081
• B2 1811+31
• B3 1659+399
• Mrk 501
• PG 1553+113

How to cite

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