VizieR Online Data Catalog: Variability of Sgr A* in 2019 July (Boyce+, 2022)

We present simultaneous submillimeter, IR, and X-ray light curves of Sgr A* from 2019 July. The NuSTAR 3-70keV, Chandra 2-8keV, GRAVITY 2.2um, Spitzer 4.5um, and ALMA 340GHz data shown in Figure 1 of the paper are given here. The Spitzer data at 4.5 micron are the excess flux density (mJy) of the pixel containing Sgr A* (see Section 2.1 of Witzel et al., 2011A&A...525A.130W), dereddened with the extinction A_Ks=2.42+/-0.002 from Fritz et al. (2011ApJ...737...73F, Cat. J/ApJ/737/73). Two flux columns are given, one with the 6.4-s BCD coadds, and a column with the data binned over 3.5 minutes. Gray regions shown in the figure on July 21 and 26 indicate where the light curve is unreliable due to a decreased signal-to-noise ratio. The GRAVITY light curve was dereddened assuming a K-band extinction of 2.42+/-0.01mag. The ALMA flux densities have a 1-sigma uncertainty of 0.25Jy.

(11 data files).