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J/A+A/496/153       Molecular hydrogen flows along Ori A cloud (Davis+, 2009)

A census of molecular hydrogen outflows and their sources along the Orion A molecular ridge. Characteristics and overall distribution. Davis C.J., Froebrich D., Stanke T., Megeath S.T., Kumar M.S.N., Adamson A., Eisloeffel J., Gredel R., Khanzadyan T., Lucas P., Smith M.D., Varricatt W.P. <Astron. Astrophys., 496, 153-176 (2009)> =2009A&A...496..153D
ADC_Keywords: Molecular clouds ; Millimetric/submm sources Keywords: stars: formation - stars: winds, outflows - ISM: Herbig-Haro objects - ISM: jets and outflows - infrared: ISM - shock waves Abstract: A census of molecular hydrogen flows across the entire Orion A giant molecular cloud is sought. With this paper we aim to associate each flow with its progenitor and associated molecular core, so that the characteristics of the outflows and outflow sources can be established. We present wide-field near-infrared images of Orion A, obtained with the Wide Field Camera, WFCAM, on the United Kingdom Infrared Telescope. Broad-band K and narrow-band H2 1-0S(1) images of a contiguous ∼8 square degree region are compared to mid-IR photometry from the Spitzer Space Telescope and (sub)millimetre dust-continuum maps obtained with the MAMBO and SCUBA bolometer arrays. Using previously-published H2 images, we also measured proper motions for H2 features in 33 outflows, and use these data to help associate flows with existing sources and/or dust cores. Description: Broad-band J, H, K and narrow-band H2 2.122um images of a 1.5°x1.5° field centred on M 42/M 43 were obtained during instrument commissioning on 24 November 2004. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 134 73 H2 jets and outflows in Orion A, from the catalogue of Stanke et al., 2002, Cat. J/A+A/392/239 table3.dat 134 43 New H2 jets in Orion A (additions to the catalogue of Stanke et al., 2002, Cat. J/A+A/392/239) tableb1.dat 76 147 Proper motions of H2 features
See also: J/A+A/392/239 : IR survey of outflows in Orion A (Stanke+, 2002) J/MNRAS/374/1413 : SCUBA survey of Orion (Nutter+, 2007) Byte-by-byte Description of file: table[23].dat
Bytes Format Units Label Explanations
1- 3 I3 --- SMZ Sequential number 4 A1 --- --- [/] 5- 7 I3 --- SMZ2 ? Second SMZ number when association 9 I1 h RAh Right ascension (J2000) (1) 11- 12 I2 min RAm Right ascension (J2000) (1) 14- 17 F4.1 s RAs Right ascension (J2000) (1) 19 A1 --- DE- Declination sign (J2000) (1) 20 I1 deg DEd Declination (J2000) (1) 22- 23 I2 arcmin DEm Declination (J2000) (1) 25- 26 I2 arcsec DEs Declination (J2000) (1) 27 A1 --- n_DEs [)] ) if position of the brightest knot in the flow (1) 29- 39 A11 --- Outflow Outflow source name (2) 41- 45 F5.2 --- alpha ? Spectral index of Outflow (2) 47- 61 A15 --- N850 850um dust core coincident with the H2 outflow source (3) 64- 65 I2 arcsec a850 ? Major axis of the core size at 850um (3) 66 A1 --- --- [x] 67- 68 I2 arcsec b850 ? Minor axis of the core size at 850um (3) 70- 73 F4.1 Jy I850 ? Integrated flux at 850um (3) 75- 78 F4.2 Jy F850 ? Flux at 850um (in Jy/beam) (3) 80- 90 A11 --- N1200 1200um dust core coincident with the H2 outflow source (4) 91- 93 I3 arcsec a1200 ? Major axis of the core size at 1200um (4) 94 A1 --- --- [x] 95- 96 I2 arcsec b1200 ? Minor axis of the core size at 1200um (4) 98-100 I3 deg O1200 ? Orientation of the core major axis 102-105 F4.2 Jy I1200 ? Integrated flux at 1200um (4) 107-110 F4.2 Jy F1200 ? Flux at 1200um (in Jy/beam) (4) 112 A1 --- l_L [~>] Limit flag on L 113-117 F5.2 arcsec L ? Entire length (5) 119-120 I2 deg theta ? Opening angle measured from a cone centred on the outflow source that includes all H2 features in the flow 122 A1 --- l_PA [~] Limit flag on PA 123-125 I3 deg PA ? Position angle measured east of north 127-134 A8 --- HH Associated HH objects, if any are known
Note (1): Position of the H2 outflow source if one is listed in "Outflow" column. Otherwise, the position of the brightest knot in the flow is given (bracket). Note that the well-known sources of the HH 1/2, HH 83 and V380-Ori-NE flows were not identified in our tables of Spitzer protostars or disc-excess sources. Note (2): Most likely H2 outflow source from the Spitzer photometry together with the spectral index, α. Just a question mark means there is no obvious H2 flow source candidate. Note (3): 850um dust core coincident with the H2 outflow source (from Nutter & Ward-Thompson, 2007, Cat. J/MNRAS/374/1413). The source must lie within a 14" radius (the JCMT beam at 850um) of the core position given by Nutter & Ward-Thompson in their Table A.1. "Emission" or "undetected" means that no core appears in their table. However, "emission" means that the source identified in Col. "Outflow" is associated with diffuse 850um emission (surface brightness >100mJy/beam, which is roughly equivalent to 5σ); a question mark means there are cores (or emission) in the vicinity which could be associated with the outflow or its source; "no obs" means that the outflow is outside the bounds of the SCUBA map. The flux is measured towards each IRS source (not necessarily the peak flux of the associated core). Note (4): Same as for the 850um cores, but for cores identified from our analysis of the 1200 observations of Stanke et al. (in prep.). In this case the source must lie within 11" of the core centroid; "emission" corresponds to a surface brightness >75mJy/beam-1 (∼5σ). Note (5): Entire length of all H2 knots (in both lobes), or the distance from the source to the most distant H2 knot if only one flow lobe is identified
Byte-by-byte Description of file: tableb1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- SMZ Sequential number 4 A1 --- --- [/] 5- 7 I3 --- SMZ2 ? Second SMZ number when association 8 A1 -- n_SMZ2 [*] Note (1) 11- 17 A7 --- Knot Knot designation 20 I1 h RAh Right ascension (J2000) 22- 23 I2 min RAm Right ascension (J2000) 25- 28 F4.1 s RAs Right ascension (J2000) 30 A1 --- DE- Declination sign (J2000) 31 I1 deg DEd Declination (J2000) 33- 34 I2 arcmin DEm Declination (J2000) 36- 37 I2 arcsec DEs Declination (J2000) 39- 44 F6.3 pix shift-x Shift along x axis 46- 51 F6.3 pix shift-y Shift along y axis 53- 56 F4.2 pix shiftpix Total shift in pixel 58- 61 F4.2 arcsec shift Total shift in arcsec 63- 67 F5.1 km/s Vel Tangential velocity (2) 69- 74 F6.1 deg Position Angle of the PM vector, measured E of N 76 I1 --- Flag Status Flag. Those with value 2 are uncertain
Note (1): In these objects clusters of knots are labelled A, B, etc., with the individual knots themselves labelled A1, A2, etc. and B1, B2, etc. The PM of 5-23 G, for example, is for all knots G1-G5 measured together. Note (2): A nominal error of 21km/s has been adopted (see text for details).
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Mar-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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