NGC 891 -- Sb galaxy, sky charts (1 degree & 30 arcmin sides) with list of objects below, in order of distance from galaxy at center.

comment on field displayed below: Objects well-clustered about the central galaxy. NGC 891 is renowned for steam-like HI and dust emission. QSOs and candidates look similar, with some alignment along the galaxy's minor axis. Some objects have been redshifted by the SEXSI hard-X-ray survey (March, 2006). Four other objects redshifted at Keck (2004, M. Burbidge, unpublished), written into the table below in red.
   
label coordinates (J2000) dist asec angle E-N type R mag B mag com R psf B psf Name conf assoc QSO pct z flux
1.181 022224.4+422137 107 298 QX 17.8 18.1 p * * SEXSIJ022224.3+422139 100 93 1.181 300
0.155 022215.1+422043 197 269 AX 17.8 20.0 p 1 1 SEXSIJ022215.1+422045 95 28 0.155 108
1.063 022215.6+421842 228 237 A 20.3 0 * x SEXSIJ022215.5+421842 1.063
3.563 022210.9+422016 245 263 Q 21.6 0 * x SEXSIJ022210.8+422016 3.563
80 022225.3+422450 258 341 X 0 20.3 p x * CXOMPJ022225.3+422450 99 80 0.55 690
64 022232.5+422619 333 359 X 0 20.8 p x * CXOMPJ022232.6+422619 97 64 0.78 145
86 022213.9+422516 342 322 X 19.5 20.3 p * * 1RXH J022213.8+422516 86 86 2.17 1
0.622 022205.0+422338 353 299 A 20.4 0 * x SEXSIJ022205.0+422338 0.622
74 022302.5+421730 383 121 X 19.2 19.5 p n * 2RXP J022302.8+421725 88 74 3
66 022226.0+421256 476 189 X 19.3 20.0 p n n CXOMPJ022225.8+421256 93 66 4
64 022152.0+422315 477 288 X 19.3 20.2 p n * CXOMPJ022151.9+422318 86 64 10
88 022253.1+421306 512 154 X 19.5 19.6 p * * 2RXP J022252.9+421311 96 88 2.27 3
37 022246.9+421234 516 162 X 16.5 18.7 p * * 1RXH J022246.9+421234 91 37 3
45 022216.8+421158 557 199 X 19.1 20.0 p * * 2RXP J022216.4+421201 45 45 4
37 022142.2+421949 564 264 X 17.5 19.8 p * * CXOMPJ022142.4+421948 82 38 16
TYCHO 022304.4+421319 567 142 SX 10.7 11.9 p * * TYCHO 2839-1501-1 100 0 34
68 022210.1+422954 603 335 X 0 21.0 p x * CXOMPJ022210.1+422955 84 68 45
65 022208.0+421144 608 207 X 16.0 17.8 p * * CXOMPJ022208.0+421145 99 65 69
55 022327.8+421632 660 113 X 18.2 19.6 p * * 2RXP J022327.6+421632 96 55 4
0.310 022142.6+422650 665 303 QX 19.4 20.8 p 2 * SEXSIJ022142.6+422654 96 54 0.310 37
44 022140.0+421326 734 233 X 16.2 17.2 p * * CXOMPJ022139.9+421328 85 46 13
76 022136.3+422729 745 303 X 0 21.1 p x * CXOMPJ022136.2+422729 94 76 12
80 022215.6+420830 761 195 X 17.9 18.6 p 1 * 1RXH J022215.3+420832 99 80 9
39 022341.8+421844 774 99 X 15.6 18.2 p * * 1RXH J022341.8+421842 95 39 10
62 022248.3+423336 789 13 X 19.0 20.2 p n * CXOMPJ022248.4+423337 83 62 27
75 022123.2+421721 800 255 X 19.4 20.1 p n * CXOMPJ022123.2+421723 97 75 117
89 022127.0+422853 877 304 X 19.4 19.5 p n * CXOMPJ022127.0+422854 99 89 228
81 022348.9+421448 916 113 X 19.3 19.7 p n * 1RXH J022348.7+421448 100 81 2
90 022346.7+421311 937 119 X 18.8 19.5 p * * 1RXH J022346.9+421312 94 90 14
0.043 022353.6+421222 1028 119 A 11.3 13.7 p n n ZW 538.059 0.043
60 022416.5+423404 1397 55 X 18.6 19.5 p 1 * 1WGA J0224.2+4234 76 60 10
83 022302.6+424400 1432 13 X 18.9 19.1 p * * 2RXP J022302.2+424410 86 83 26
92 022402.7+423820 1448 43 X 17.7 18.0 p * * 2RXP J022402.9+423828 95 92 32
72 022415.9+423941 1608 45 X 18.2 18.6 p * * 1WGA J0224.2+4239 75 72 18
67 022019.2+423623 1750 302 X 19.3 19.6 p n n 1WGA J0220.3+4236 72 67 14

 

 

Columns of table:

  1. label -- identifier for each optical object displayed on the chart(s) above.
  2. coordinates J2000 -- position on the sky of this optical object, pattern is hhmmss.s±ddmmss, which gives 1 arcsecond precision.
  3. dist asec -- distance (offset in arcseconds) of this object from the central galaxy, i.e. the center of the chart.
  4. angle E-N -- direction from the central galaxy to this object, N thru E, ie. 0 is up, 90 is left, 180 is down, 270 is rightwards.
  5. type -- short description of this object: Q=quasar, B=Bl lac, A=AGN, G=galaxy, S=star, X=X-ray source, R=radio source, 2=double radio lobes.
  6. R mag, B mag -- brightness of this object in red and blue colors respectively, 0=not seen in this color
  7. com -- comment on object: p=blue is POSSI-O violet, (no p)=blue is Bj green or similar, i=red is i, u=blue is u, v=variablility nominally detected, m=proper motion nominally detected, ?=inferred object, calculated from combining APM and USNO-A optical catalogs.
  8. R psf, B psf -- appearance of object in red and blue colors respectively, *=stellar, 1=fuzzy, 2=extended, n=no psf, x=not seen in this color.
  9. Name -- name of this object from the literature, or IAU name from X-ray/radio catalog.
  10. conf assoc -- confidence that this optical object is the true source of the X-ray or radio detection that we list with it. This is the published figure from the QORG catalog, except for XMM or CXOMP X-ray objects which are calculated using the identical technique as used in QORG.
  11. QSO pct -- confidence that this optical object is a QSO specifically, calculated as in (10) above.
  12. z -- the redshift of this object, from the literature. NBCKDE redshifts are photometric only, and rounded to tenths, e.g. 1.700.
  13. flux -- if a radio source, in mJy; if an X-ray source, in counts per hour as listed in ROSAT/CXOMP, XMM normalised to ROSAT (div by 3.5).

 

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