Outburst from SS 433 observed with BOOTES-2/COLORES

ATel #6385; M. D. Caballero-Garcia (CTU-FEL, Prague, CZ), A. Castro-Tirado (IAA-CSIC, Spain), M. Jelinek (IAA-CSIC, Spain), on behalf of a larger collaboration.
on 12 Aug 2014; 09:59 UT
Credential Certification: Maria D. Caballero-Garcia (mcaballe@brera.inaf.it)

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In light of the recent extreme outburst of SS 433 (ATELs #6347, #6355) and follow-up by SWIFT (ATEL #6364) the 0.6m TELMA robotic telescope at the BOOTES-2 (+COLORES) astronomical station in Malaga (Spain), obtained optical 4000-9000 A spectra starting at 2014-08-01 and ending at 2014-08-07. The most prominent feature of the spectra is the variable H alpha line. There is also a variable emission line at 7100 A that might be a 300 A shifted H alpha Pfund line (7460 A), previously reported in the literature (Fuchs, Miramon & Abraham, 2006).

Photometric daily measurements from BOOTES-2 (in SDSS r and i filters) are given in the following:

r filter :

1406931041. 1.185651 12.36425 0.008

1407017454. 1.182885 11.8165 0.006

1407098707. 1.323325 12.306 0.008

1407372395. 1.41157 12.43675 0.012

i filter:

1406931063. 1.185651 11.0045 0.006

1407017476. 1.182885 10.356 0.007

1407098729. 1.320411 10.807 0.006

1407372417. 1.41157 10.97925 0.007

where the format is Obs. time (seconds since 1970/01/01), airmass, r/i magnitude and error in r/i magnitude. These measurements indicate that the source is returning to quiescence (this source has a quiescent level of 12.65, 11.27 magnitudes in the Johnson R and I filters, respectively). This is in agreement with results from UVOT/SWIFT (ATEL #6364). Continuous monitoring of this source with BOOTES-2 is ongoing.