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J/A+A/310/384    Optical brightness of 3 ROSAT Seyfert galaxies (Greiner+, 1996)

Four new active galaxies with steep soft X-ray spectra Greiner J., Danner R., Bade N., Richter G.A., Kroll P., Komossa S. <Astron. Astrophys. 310, 384 (1996)> =1996A&A...310..384G (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Galaxies, optical ; Galaxies, photometry Mission_Name: ROSAT Keywords: X-ray sources - galaxies: active - galaxies: RX J1225.7+2055; RX J1239.3+2431; RX J1250.2+1923; RX J1257.5+2412 Description: The printed version of this paper describes the X-ray and optical properties of four new active galaxies discovered in the ROSAT All-Sky Survey. While one object (RX J1257.5+2412) is identified as a BL Lac object, the other three (RX J1239.3+2431, RX J1225.7+2055, and RX J1250.2+1923) are narrow line Seyfert 1 galaxies. Three of these four objects are bright enough to be studied on archival photographic plates of Sonneberg Observatory. The present list contains the individual brightness measurements of these objects all of which turned out to be variable on timescales of weeks to years. Some lightcurves (long-term as well as short-term) are given in the printed version. Objects: ---------------------------------------------------------------------- RA (2000) DE Name ---------------------------------------------------------------------- 12 25.7 +20 55 RX J1225.7+2055 = S10942 12 57.5 +24 12 RX J1257.5+2412 = S10941 12 39.3 +24 31 RX J1239.3+2431 = S10940 ---------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table 43 555 Optical brightness estimates
Byte-by-byte Description of file: table
Bytes Format Units Label Explanations
1- 11 F11.3 d HJD Julian date of middle of exposure time. The exposure time ranges between 40-60 min. 14- 17 F4.1 mag Mag1 ? Brightness estimate for RX J1225.7+2055 20- 23 A4 --- n_Mag1 Comment on accuracy of brightness estimate of RX J1225.7+2055 (1) 25- 28 F4.1 mag Mag2 ? Brightness estimate for RX J1257.5+2412 31- 33 A3 --- n_Mag2 Comment on accuracy of brightness estimate of RX J1257.5+2412 (1) 35- 38 F4.1 mag Mag3 ? Brightness estimate for RX J1239.3+2431 41- 43 A3 --- n_Mag3 Comment on accuracy of brightness estimate of RX J1239.3+2431 (1)
Note (1): No entry in the comment column means an accurate brightness estimate (error of ±0.08 mag), while the five different signs have the following meanings: < denotes an upper limit, : denotes a slightly increased error (±0.14 mag), :: denotes an increased error (±0.20 mag), ? denotes an uncertain measurement, ?? denotes a doubtful measurement.

(End) Patricia Bauer [CDS] 20-Dec-1995
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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