Return to Home Page
Dear colleagues, I examined VRI photometry of the fields of Ap 3-1, CM Aql, Mac 1-17 and V850 Aql taken with 40cm telescope at Brno observatory in seven nights in 2002 (some data were taken together with Petr Sobotka, but I don't which). The images were processed automatically with respect to comparison stars measured by Henden (Henden & Munari 2000). The field photometry was searched for new variable stars using algorithm described e.g. in Pojmanski, 2000 (astro-ph/0005236). Four new variable stars were revealed. As some of these stars are not in GSC, I have started designation system for ease of talking and satisfaction of my ego:-)) Currently labeled stars are: Pej 001 = YY Her new var, IBVS 5362 Pej 002 = GSC 1585 0685 in the field of V1413 Aql, vsnet-newvar 1835 Pej 003 = in the field of Sh 2-71, no details published yet New variable stars: Pej 004 = GSC 0467 1890 in the field of Ap 3-1 RA = 19:11:00.7, Dec=+02:52:42 (J2000). The star is quite blue and the amplitudes (small, though) seem to be decreasing with decreasing wavelength. The variations seem to be slow. I don't know what type this star might be. Some instrumental effect is rather unlikely as the comparison star is of moderate colour (B-V = 0.8). Nightly averages: 20020604.0452 10.68Ic (Ondrej Pejcha) 20020705.9905 10.59Ic (Ondrej Pejcha) 20020722.9080 10.64Ic (Ondrej Pejcha) 20020727.9166 10.66Ic (Ondrej Pejcha) 20020819.8831 10.68Ic (Ondrej Pejcha) 20020830.8585 10.70Ic (Ondrej Pejcha) 20021026.7649 10.67Ic (Ondrej Pejcha) 20020604.0473 11.36Rc (Ondrej Pejcha) 20020705.9923 11.21Rc (Ondrej Pejcha) 20020722.9115 11.26Rc (Ondrej Pejcha) 20020727.9170 11.30Rc (Ondrej Pejcha) 20020819.8827 11.31Rc (Ondrej Pejcha) 20020830.8580 11.36Rc (Ondrej Pejcha) 20021026.7643 11.31Rc (Ondrej Pejcha) 20020604.0500 11.91Vc (Ondrej Pejcha) 20020705.9954 11.81Vc (Ondrej Pejcha) 20020727.9167 11.90Vc (Ondrej Pejcha) 20020819.8824 11.88Vc (Ondrej Pejcha) 20020830.8578 11.90Vc (Ondrej Pejcha) Pej 005 in the field of Ap 3-1, just next to Pej 004 RA = 19:10:57.7, Dec=+02:52:09 (J2000) This is probably another low amplitude semiregular variable (USNO A2.0 gives B-R=4.6). The star is about 16 mag in V and thus unmeasurable: 20020604.0452 10.67Ic (Ondrej Pejcha) 20020705.9905 10.30Ic (Ondrej Pejcha) 20020722.9080 10.22Ic (Ondrej Pejcha) 20020727.9166 10.24Ic (Ondrej Pejcha) 20020819.8831 10.32Ic (Ondrej Pejcha) 20020830.8586 10.35Ic (Ondrej Pejcha) 20021026.7649 10.57Ic (Ondrej Pejcha) 20020604.0473 13.62Rc (Ondrej Pejcha) 20020705.9923 13.24Rc (Ondrej Pejcha) 20020722.9115 13.07Rc (Ondrej Pejcha) 20020727.9170 13.09Rc (Ondrej Pejcha) 20020819.8827 13.16Rc (Ondrej Pejcha) 20020830.8580 13.11Rc (Ondrej Pejcha) 20021026.7643 13.52Rc (Ondrej Pejcha) Pej 006 in the field of CM Aql RA=19:04:01.2, Dec=-03:05:12 (J2000) This is probably another low amplitude SR. The star is not in USNO A2.0 although the V band magnitude is approx. 15 mag (anyway, unmeasurable on my images): 20020612.9306 9.58Ic (Ondrej Pejcha) 20020706.0219 9.51Ic (Ondrej Pejcha) 20020722.9159 9.47Ic (Ondrej Pejcha) 20020727.9213 9.45Ic (Ondrej Pejcha) 20020819.8871 9.36Ic (Ondrej Pejcha) 20020830.8625 9.37Ic (Ondrej Pejcha) 20021026.7688 9.61Ic (Ondrej Pejcha) 20020612.9316 12.39Rc (Ondrej Pejcha) 20020706.0229 12.32Rc (Ondrej Pejcha) 20020722.9172 12.29Rc (Ondrej Pejcha) 20020727.9212 12.30Rc (Ondrej Pejcha) 20020819.8869 12.09Rc (Ondrej Pejcha) 20020830.8623 12.05Rc (Ondrej Pejcha) 20021026.7687 12.57Rc (Ondrej Pejcha) Pej 007 in the field of CM Aql RA=19:03:27.8, Dec=-03:01:43 (J2000) Another probable low amplitude SR (USNO A2.0 gives B-R=4.0 mag).The star is about 16 mag in V band (and thus unmeasurable), but also faint on R band images resulting into not as complete coverage as in the I band: 20020612.9306 12.97Ic (Ondrej Pejcha) 20020706.0219 12.60Ic (Ondrej Pejcha) 20020722.9159 12.72Ic (Ondrej Pejcha) 20020727.9213 12.86Ic (Ondrej Pejcha) 20020819.8872 13.43Ic (Ondrej Pejcha) 20020830.8626 13.26Ic (Ondrej Pejcha) 20021026.7688 13.01Ic (Ondrej Pejcha) 20020612.9316 14.66Rc (Ondrej Pejcha) 20020706.0229 14.10Rc (Ondrej Pejcha) 20020722.9172 14.74Rc (Ondrej Pejcha) 20020727.9217 14.88Rc (Ondrej Pejcha) 20021026.7675 14.81Rc (Ondrej Pejcha) No new obvious variable stars in the fields of Mac 1-17 and V850 Aql :-( Best regards, Ondrej Pejcha
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
