Molecular Hydrogen Emission-Line Objects (MHOs)

in Orion-B

(click on images for larger view)

Object RA
(2000)
Dec
(2000)
Image Other ID Image/ID Refs. Discovery Paper /
Imaging Refs.
Assoc. HH Comment
MHO 300 05 47 07.3 +00 22 40 I A Eisloeffel 1999 Garden, Russell, Burton 1990; Eisloeffel 1999 - Main NEern lobe of large NGC 2071 bipolar outflow
MHO 301 05 46 59.0 +00 20 30 I B Eisloeffel 1999 Garden, Russell, Burton 1990; Eisloeffel 1999 - SWern lobe of large bipolar outflow in NGC 2071 (counterflow to MHO 300)
MHO 302 05 47 05.5 +00 21 45 II A/II B Eisloeffel 1999 Garden, Russell, Burton 1990; Eisloeffel 1999 - Emission near IR source of MHO 300/301 (in NGC 2071 region)
MHO 303 05 47 02.5 +00 22 30 III Eisloeffel 1999 Garden, Russell, Burton 1990; Eisloeffel 1999 - Chain of knots and features extending to NW from NGC 2071
MHO 304 05 47 03.7 +00 22 50 IV A Eisloeffel 1999 Eisloeffel 1999 - Fainter jet running NE-SW, parrallel with MHO 300/301 in NGC 2071
MHO 305 05 47 09.5 +00 24 30 IV B Eisloeffel 1999 Eisloeffel 1999 - Possible extension of MHO 304 flow in NGC 2071
MHO 306 05 47 08.9 +00 24 00 V Eisloeffel 1999 Eisloeffel 1999 - Small group of features in NGC 2071
MHO 307 05 47 11.0 +00 23 45
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Eisloeffel 1999 - Extension of large MHO 300 flow in NGC 2071
MHO 308 05 47 12.3 +00 22 00 VI Eisloeffel 1999 Eisloeffel 1999 - 20 arcsec-long jet to east of main MHO 300/301 flow in NGC 2071
MHO 309 05 46 59.0 +00 19 20 VII Eisloeffel 1999 Eisloeffel 1999 - Bow-shaped structure to south of large MHO 301 flow lobe in NGC 2071
MHO 310 05 47 14.0 +00 18 15 VIII Eisloeffel 1999 Eisloeffel 1999 - 1 arcmin-long jet in SE corner of NGC 2071 region
MHO 311 05 47 01.3 +00 25 50 XI A Eisloeffel 1999 Eisloeffel 1999 - North-south chain of knots in NW corner of NGC 2071 (assoc. with MHO 309?)
MHO 312 05 47 02.7 +00 28 10 XI B Eisloeffel 1999 Eisloeffel 1999 - Filamentary structure in NW NGC 2071; possible counterflpow to MHO 311
MHO 313 05 46 59.0 +00 26 15 XII A Eisloeffel 1999 Eisloeffel 1999 - Small jet in NW NGC 2071; counterflow to MHO 314
MHO 314 05 47 02.5 +00 26 45 XII B Eisloeffel 1999 Eisloeffel 1999 - Small jet in NW NGC 2071; counterflow to MHO 313
MHO 315 05 41 58.2 -01 13 36 HH 91 A-V Davis, Mundt, Eisloeffel 1994c Davis, Mundt, Eisloeffel 1994c HH 91 Bright, knotty HH object
MHO 316 05 41 48.2 -01 13 37 HH 91 X-Z Davis, Mundt, Eisloeffel 1994c Davis, Mundt, Eisloeffel 1994c HH 91 Fainter curving filamnnet; assoc. with MHO 315
MHO 317 05 51 25.3 +02 55 15
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Davis, Mundt, Eisloeffel 1994c; Noriega-Crespo et al. 1996; Garnavich et al. 1997; Hartigan et al. 2009 HH 110 Collimated, knotty HH jet
MHO 318 05 51 21.0 +02 55 45 IRS 2 Davis, Mundt, Eisloeffel 1994c Davis, Mundt, Eisloeffel 1994c; Garnavich et al. 1997; Hartigan et al. 2009 - Bipolar jet from IR source situated to NW of HH 110 (MHO317)
MHO 319 05 51 20.7 +02 55 27 IRS 1 Davis, Mundt, Eisloeffel 1994c Davis, Mundt, Eisloeffel 1994c; Garnavich et al. 1997; Hartigan et al. 2009 - Second north-south jet near HH 110; from IRAS 05487+0255
MHO 320 05 51 46.1 +02 48 30 F,H,L,P,
CJ1-CJ3
Gredel, Reipurth 1993, 1994; Davis, Mundt, Eisloeffel 1994c Gredel, Reipurth 1993, 1994; Davis, Mundt, Eisloeffel 1994c; Reipurth et al. 1997, 1999, 2000b; Coppin, Davis, Micono 1998 HH 111 Well-known collimated, knotty, bipolar HH jet
MHO 321 05 51 46.5 +02 48 30 B,C,X,Y,Z Gredel, Reipurth 1993, 1994; Davis, Mundt, Eisloeffel 1994c Gredel, Reipurth 1993, 1994; Davis, Mundt, Eisloeffel 1994c; Coppin, Davis, Micono 1998; Reipurth et al. 1999 HH 121 Knots in collimated flow that runs orthogonal to HH 111
MHO 322 05 46 07.8 -00 11 56
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Davis et al. 1997 - Faint arc extending northward from SSV 61 in L 1630 (HH 24-26)
MHO 323 05 46 09.3 -00 10 24
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Bontemps, Ward-Thompson, Andre 1996; Davis et al. 1997, 2002 HH 24A Small jet from embedded Class 0 source in L 1630
MHO 324 05 46 08.0 -00 10 03
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Davis et al. 1997, 2002 HH 24B Finger of emission associated with SSV 63W IR source in L 1630
MHO 325 05 46 07.3 -00 13 25
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Davis et al. 1997, 2002; Schwartz, Burton, Herrmann 1997; Chrysostomou et al. 2000 HH 25 Knotty, curving, bipolar flow that crosses HH 26 (MHO 326) in L 1630
MHO 326 05 46 05.0 -00 14 37
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Davis et al. 1997 2002; Schwartz, Burton, Herrmann 1997; Chrysostomou et al. 2000 HH 26 Curving bipolar outflow that crosses HH 25 (MHO 325) in L 1630
MHO 327 05 54 09.8 +02 37 09 A,B,C Wang, Stecklum, Henning 2005 Wang, Stecklum, Henning 2005 HH 182A Small group of fant knots/arcs
MHO 328 05 18 16.8 +07 11 00
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Connelley, Reipurth, Tokunaga 2007 - Bow shock to west of nebulous source IRAS 05155+0707
MHO 329 05 18 14.6 +07 11 06
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Connelley, Reipurth, Tokunaga 2007 - Fainter, knotty bow shock to west of IRAS 05155+0707 (downwind of MHO 328)
MHO 330 05 18 12.8 +07 11 21
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Connelley, Reipurth, Tokunaga 2007 - Group of knots and filaments to west of IRAS 05155+0707; possibly associated with MHO 327/328
MHO 331 05 45 49.6 -00 05 12
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Zealey et al. 1992 HH 19 Group of knots assoc with complex HH object
MHO 332 05 46 11.0 -00 09 25 D,G,N Caratti o Garatti et al. 2006 Caratti o Garatti et al. 2006 HH 24 Faint bows extending NEward from the main HH 24 region
MHO 499 05 43 51.3 -01 02 55
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Zinnecker, McCaughrean, Rayner 1998; Codella et al. 2007; Smith, O'Connell, Davis 2007; Correia et al. 2009 HH 212 Spectacular twin jets and bow shocks emanating from an embedded protostar