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J/AJ/127/3456    Internal velocities in the Orion Nebula            (Doi+, 2004)

Internal velocities in the Orion nebula: large radial velocity features. Doi T., O'Dell C.R., Hartigan P. <Astron. J., 127, 3456-3478 (2004)> =2004AJ....127.3456D
ADC_Keywords: Radial velocities ; Space velocities ; Stars, pre-main sequence Keywords: ISM: Herbig-Haro objects - ISM: individual (Orion Nebula) - ISM: jets and outflows - stars: winds, outflows Abstract: A map of high-velocity features in the 3'x5' central region of the Orion Nebula was created from slit spectra with a velocity resolution of 8km/s. Spatial velocities of 19 features belonging to 11 HH objects were obtained by combining these radial velocity data with existing proper motion data. Description: We observed the Orion Nebula with the echelle spectrograph attached at the f8 Cassegrain focus of the Mayall 4m telescope at KPNO on 2000 January 21, 23, 24, and October 7, 9, 2001 December 31, and 2002 January 2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 57 275 Radial velocities in the Orion Nebula table2.dat 71 20 Spatial velocities in the Orion Nebula
See also: J/AJ/111/846 : Orion HST survey (O'Dell+ 1996) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Type [HH DOH] HH is for known Herbig-Haro objects and DOH for not assigned HH (Doi, O'Dell and Hartigan) 5- 11 A7 --- [OW94] Feature designation (G1) 13- 18 A6 --- Source Source name (G1) 20- 27 A8 --- Filter Filter 29- 32 I4 km/s RV Radial velocity (1) 34- 35 I2 km/s FWHM ? Full-Width at Half-Maximum 37- 40 I4 --- Flux ? Observed Doppler shifted feature flux (2) 42- 46 F5.3 --- Ratio ? Observed Doppler shifted feature flux normalized to the observed systemic velocity component flux 48 A1 --- n_RV Radial velocity peak measurement (3) 50- 56 A7 --- Comm Additional comment (4)
Note (1): With respect to the systemic velocity (18±2km/s heliocentric). Note (2): In the same arbitrary units throughout. Note (3): The radial velocity was measured at peaks of the flux intensity by using a Gaussian fitting. The peaks are defined as follows: p = primary peak; s = secondary peak; t = tertiary peak; Note (4): Additional comments, defined as follows: i = radial velocity measured directly from the slit spectrum visually for the peak intensity; v = radial velocity measured directly from the slit spectrum visually for the maximum velocity.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 7 A7 --- [OW94] Feature designation (G1) 9- 14 A6 --- Source Source name (G1) 17- 19 I3 km/s VS Spatial velocity (1) 22- 24 I3 deg OA Orientation angle of velocity vector (2) 27- 30 I4 km/s RV Radial velocity (3) 33- 35 I3 km/s VT Tangential velocity (4) 38- 40 I3 deg PA Position angle (5) 43- 60 A18 --- r_VT Tangential velocity source (6) 64- 71 A8 --- Com Comment
Note (1): The uncertainty on the spatial velocity is ±11km/s Note (2): Angle between the observer and the velocity vector. The uncertainty on the orientation angle is: ±12° for a spatial velocity of 50km/s ±6° for a spatial velocity of 100km/s ±4° for a spatial velocity of 150km/s ±2° for a spatial velocity of 300km/s Note (3): Radial velocity with respect to the photon dominated region (PDR), provided by adding -10km/s to the radial velocity with respect to the systemic velocity. The uncertainty is ±5km/s. Note (4): The uncertainty on the tangential velocity is ±10km/s Note (5): The uncertainty on the position angle is: ±16° for a tangential velocity of 50km/s ±8° for a tangential velocity of 100km/s ±3° for a tangential velocity of 300km/s Note (6): References that provide the tangential velocity data are defined as follows: DOH02 = Doi, O'Dell & Hartigan, 2002AJ....124..445D BOM00 = Bally, O'Dell & McCaughrean, 2000AJ....119.2919B OD03 = O'Dell & & Doi, 1999PASP..111.1316O
Global Notes: Note (G1): [OW94] SSs-MSS where the J2000 coordinates are 05 35 SS.s -05 2M SS. The source name is HH NNN or DOH NN. The feature is identified as SSs-MSS HH NNN or SSs-MSS DOH NN.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 12-May-2005
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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