IAU Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

TCP J05493243+4636023

TCP J05493243+4636023   2015 11 03.8067*  05 49 32.43 +46 36 02.3  12.7 U             Aur       9 0



2015 11 03.8067

Shigehisa Fujikawa, Kan'onji, Kagawa, Japan, reports his discovery of this TCP (mag 12.7) in Aur on a CCD frame taken on 2015 Nov 03.8067 (limiting mag about 14) using a Minolta F 3.5 f 120mm lens. He confirmed the object on another frame taken shifted about 2 arcmin north with the same lens.




2015 11 06.42

The following very red (and apparently variable) carbon star is 4.6" from the transient's position: CGCS 6107 (05 49 32.1 +46 35 57) V= 17.3 mag - USNO-B1.0 1365-0154845 (05 49 32.257 +46 35 58.05) R1= 12.38, R2= 16.70, I= 11.33, B2= 20.77 mag - GSC2.3 NAO2004478 (05 49 32.322 +46 35 57.79) F= 16.20, j= 20.59, V= 15.95, N= 11.55 mag - 2MASS 05493230+4635578 (05 49 32.309 +46 35 57.85) J= 8.898, H= 6.795, K= 5.124 mag - WISE J054932.37+463557.9 (05 49 32.374 +46 35 57.92) W1= 2.847, W2= 2.162, W3= 0.116, W4= -0.144 mag --- Patrick Schmeer (Bischmisheim, Germany)




2015 11 03.8067

Shigehisa Fujikawa reports that he found this object on his past CCD frames as follows: 2015 Feb 20.57636: nothing visible at this position (limiting mag 14.7) 2015 Feb 20.57765: nothing visible at this position (limiting mag 15.3) 2015 Aug 23.79669: mag 13.7 (limiting mag 14.2) 2015 Aug 23.79820: mag 13.6 (limiting mag 14.2) 2015 Oct 14.79504: mag 13.2 (limiting mag 14) 2015 Oct 14.79648: mag 13.8 (limiting mag 14) from which he notes that the object seems to be a variable star. All frames including the frames of 2015 Nov 3 were taken with a Minolta f/3.5 120-mm-f.l. camera lens with the exposure time of 60s.




2015 11 06.493

Mag.= 11.2, position end figures 32s.34, 35' 57".4 observed by T. Noguchi, Chiba-ken, Japan using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD, who writes a star on DSS (mag.= 15.9) of end figures 32s.31, 35' 57".8 is located at almost same position. An image posted at http://park8.wakwak.com/~ngc/images/TCPinAur.jpg.




2015 11 06.5040

Photometry results were V=13.38, Rc=11.16 and Ic=9.48 with 0.43-m f/4.5 CDK astrograph + FLI-PL6303E(T21, iTelescope.NET) at Mayhill, USA, remotely. Position end figures were 32.32 and 35' 57.98". This star is very red and might be a MIRA variable. Seiichiro Kiyota (Kamagaya, Japan)




2015 11 06.82

Spectra of the transient have been obtained on Nov 6.82 UT by U. Munari (INAF Padova) with the Asiago 1.22m telescope + B&C spectrograph, over the 3300-8000 Ang range at 2.31 Ang/pix dispersion. The spectrum is clearly that of a very cool carbon giant, possibly of spectral type C8 or even C9. There is a weak Halpha in emission, as normally present in carbon Miras around maximum brightness.



Valid HTML 4.01!