Supermassive Black Hole Measurements and Plans

Done

GalaxySorted ascending Mbh 10^6 Notes
Circinus 1.7 determined by separating "disk masers" from "outflow masers" (Greenhillet al)
Mrk 1419 11.4 done
NGC 1068 15 "enclosed mass", not BH mass; rotation is sub-Keplerian (Greenhill et al)
NGC 1194 64 done
NGC 2273 7.6 done
NGC 3079 ~2 "enclosed mass"; messy disk (Kondratko et al)
NGC 3393 31 done (Kondratko et al)
NGC 4258 38.2 done (Miyoshi et al/CfA group)
NGC 4388 8.4 done
NGC 4945 1 southern target; VLBI quality not as good as others (Greenhill et al)
NGC 6264 28.4 done
NGC 6323 9.3 done
TXS 2226-184 ~10 slow rotation; BH? (Ball et al)
UGC 3789 11.2 done

Data in hand/ in progress

Galaxy Mbh 10^6 Notes
Mrk 1   All data in hand; Violetta made prelim map from self-cal track; Mbh in progress; needs maser position from phase-ref track
Mrk 1210   VLBA-only data in-hand; disk?
NGC 1386   public data; disturbed disk? old map from Braatz et al w/o GBT; new data will give better map
IC 2560   public data; Greenhill has prelim map; low declination
NGC 5728   Jim & Cheng-Yu made early map; puzzling structure; Cheng-Yu will review & improve
UGC 3193   Jim & Nicole Gugliucci were granted time; need to check status
Mrk 1029   VLBI data in hand; not yet processed
UGC 6093   VLBI data in hand; not yet processed
NGC 2824   Unclear whether this is a disk, but we will get a VLBA-only map of it to see; in queue but not yet observed

High Priority/ to be done

Galaxy Mbh 10^6 Notes
NGC 5495   Phase-ref track by Kondratko likely failed
UGC 9618b (VV 340a) ~70 (Greenhill et al 2009; single-dish estimate) Phase-ref track by Kondratko likely failed
J0836+3327 (CG 211) ~30 (Greenhill et al 2009; single-dish estimate) Phase-ref track by Kondratko likely failed
NGC 1320   to be done; high priority
UGC 9639   to be done; high priority
NGC 6926   to be done
NGC 2979   described as disk in Greenhill et al 2009
NGC 3735   described as disk in Greenhill et al 2009

Other VLBI results/possibilities/watch list

Galaxy Mbh 10^6 Notes
IC 1481 <10^7 (Mamyoda); our VLA+PT data shows maser 0.8" from continuum
J0126-0417   < 20 mJy; 250 km/s
NGC 591   weak, only a few lines
Mrk 78   weak
UGC 5713   weak but looks like a disk spectrum
Mrk 34   weak but looks like a disk spectrum
NGC 4151   only a couple hv lines detected; highly variable
NGC 4968   very weak spectrum, but disky
J1346+5228   disky spectrum, good systemic features but only a couple of weak hv lines
NGC 6240   not clear this is a BH; weak and variable spectrum
J1658+3923   weak
J1939-0124   unclear whether hv lines are real

-- JimBraatz - 07 Aug 2009
Topic revision: r8 - 2010-09-03, JimBraatz
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