NGC838 Galaxies in Cetus
| DATE | 23 Sept 2014 | |
| TELESCOPE OPTICS | 508 mm mirror f.4 ccd
Kodak KAF8300
3326 x 2504px 5.4 x 5.4µm |
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| EXPOSURE | binning 1: composite image, 10 min | |
| IMAGE SIZE (ARCMIN) | 29 | |
| LIGHT TRAVEL TIME (Derived Redshift. Millions Light Years) | NGC838 = 159 NGC839 = 161 NGC835 = 169 NGC848 = 166 NGC833 = 160 |
APMUKS(BJ) B020707.63-103358.5 = 449 2MASX J02090772-1007341 = 1090 |
| MAGNITUDE | NGC838 = 13.5B NGC839 = 14.20 NGC835 = 13.14 NGC848 = 13.95 NGC833 = 13.5g |
APMUKS(BJ) B020707.63-103358.5 = 16.71 2MASX J02090772-1007341 = 17.2g |
| POSITION RA-DEC J2000 | NGC838 = 02 09 38.5 -10 08 48 NGC839 = 02 09 42.9 -10 11 03 NGC835 = 02 09 24.6 -10 08 09 NGC848 = 02 10 17.6 -10 19 17 NGC833 = 02 09 20.8 -10 07 59 |
APMUKS(BJ) B020707.63-103358.5 = 02 09 35.0 -10 19 51 2MASX J02090772-1007341 = 02 09 07.7 -10 07 33 |
| POSITION ANGLE: | 224 | |
| Rotation Velocity km/s | NGC838 = ~75 NGC839 = ~100 NGC835 = ~220 NGC848 = na NGC833 = ~80 |
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| Size (Light Years) | NGC838 = 61,600 (r (SDSS Isophotal)) NGC839 = 70,500 (RC3 D_25; R_25 (blue)) NGC835 = 40,600 (RC3 D_25; R_25 (blue)) NGC848 = 81,600 (RC3 D_25; R_25 (blue)) NGC833 = 70,599 (RC3 D_25; R_25 (blue)) |
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| DETAILS | This group of galaxies is known a (HGC 16) or Hickson Compact Group 16. NGC838, a spiral LINER galaxy with starburst activity, SN 2005H occurred here. NGC839 edge-on spiral with LINER Sefert2 activity. NGC835 is a barred spiral with LINER and Seyfert2 activity. NGC848 is a barred spiral galaxy with starburst activity. NGC833 is a LINER galaxy with Seyfert2 activity. Galaxies NGC833 and NGC835 seem to be interacting, extending a plume of gas and stars away from the zone of interactivity. | |
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