RBS 1257 multiwavelength SED

Also known as 1FLAT J132301.0+043951, 2WHSP J132301.0+043951, 3HSP J132301.0+043952, 5BZG J1323+0439, BZB J1323+0439, ROXA J132301.0+043951.3, RXS J13230+0440, SDSS J132301.00+043951.3.

• Class: BL Lac
• Redshift: z = 0.224
• Position (ICRS): RA 200.75417°, Dec 4.66428°
• Data: 2,355 points (33 upper limits) from 28 catalogues
• Dated data: 2009–2024 (MJD 54996–60489)
• Undated catalogue values: 61
• Frequency range of detections: log ν = 8.2–25.4 [Hz] (radio, microwave, infrared, optical, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 24 UVOT and 9 XRT
• Largest catalogues (points): ASAS-SN (1,063), NEOWISE (590), ZTF (480), WISEME (78), PanSTARRS-LC (59)

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=200.75417, dec=4.66428, name="RBS 1257")

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

Other BL Lac objects

• LEDA 1410672
• MS 1402.3+0416
• 4C +16.39
• TXS 1421+048
• TXS 1307-117
• 1ES 1212+078

How to cite

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