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J/ApJS/160/511      Orion Nebula Cluster proplyd candidates     (Kastner+, 2005)

X-ray emission from Orion Nebula Cluster stars with circumstellar disks and jets. Kastner J.H., Franz G., Grosso N., Bally J., McCaughrean M.J., Getman K., Feigelson E.D., Schulz N.S. <Astrophys. J. Suppl. Ser., 160, 511-529 (2005)> =2005ApJS..160..511K
ADC_Keywords: Clusters, open ; Interstellar medium ; Stars, pre-main sequence ; X-ray sources Keywords: circumstellar matter - ISM: Herbig-Haro objects - open clusters and associations: individual (Orion Nebula Cluster) - planetary systems: protoplanetary disks - stars: pre-main-sequence - X-rays: stars Abstract: We investigate the X-ray and near-infrared emission properties of a sample of pre-main-sequence (PMS) stellar systems in the Orion Nebula Cluster (ONC) that display evidence for circumstellar disks ("proplyds") and optical jets in Hubble Space Telescope (HST) imaging. Our study uses X-ray data acquired during Chandra Orion Ultradeep Program (COUP) observations, as well as complementary optical and near-infrared data recently acquired with HST and the Very Large Telescope (VLT), respectively. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 107 150 Orion Nebula Cluster proplyd candidates table2.dat 65 22 Objects not considered proplyds table3.dat 73 101 Proplyds with COUP counterparts: optical and X-ray properties
See also: J/ApJS/160/319 : COUP: observations and source lists (Getman+, 2005) J/AJ/111/846 : Orion HST survey (O'Dell+ 1996) J/AJ/119/3026 : Circumstellar disk candidates in Orion (Rebull+, 2000)findcat Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Proplyd name (G1) 11 A1 --- n_Name [ij] Individual notes (1) 13- 14 I2 h RAh Hour of Right Ascension (J2000) (2) 16- 17 I2 min RAm Minute of Right Ascension (J2000) (2) 19- 24 F6.3 s RAs Second of Right Ascension (J2000) (2) 26 A1 --- DE- Sign of the Declination (J2000) (2) 27- 28 I2 deg DEd Degree of Declination (J2000) (2) 30- 31 I2 arcmin DEm Arcminute of Declination (J2000) (2) 33- 36 F4.1 arcsec DEs Arcsecond of Declination (J2000) (2) 38- 41 I4 --- VLT ? The VLT infrared (JHK) source number 43 A1 --- f_VLT [NO] Flag on VLT (3) 45- 48 F4.2 arcsec Del-I ? ACS image and infrared source position offset 50- 53 I4 --- COUP ? COUP X-ray source number 55 A1 --- f_COUP [N?kO] Flag on COUP (4) 57- 61 F5.2 arcsec Del-X ? ACS image and X-ray source position offset 62 A1 --- u_Del-X Uncertainty flag on Del-X 64- 65 A2 --- Star? [YN? ] Star apparent in ACS image? 67-107 A41 --- App Appearance in ACS image (5)
Note (1): Flag on Name, defined as follows: i = Proplyd 044-527 is a new identification; j = d163-026s is found ∼0.4" from COUP 796 (=MLLA-956) and d239-334 is found ∼0.6" from COUP 1268 (=MLLA-347), but optical/IR sources near these proplyds are in fact the X-ray sources; see Fig. 7 of Bally et al. (2000AJ....119.2919B). In addition, COUP 1316 lies at a companion to d253-1536. Note (2): Determined from ACS images; for sources outside ACS FOV, coordinates are from Bally et al. (2000AJ....119.2919B), Smith et al. (2005AJ....129..382S), or O'Dell & Wong (1996, Cat. J/AJ/111/846). See text. Note (3): Flag on VLT, defined as follows: N = no IR counterpart detected; O = candidate is outside the VLT image FOV. Note (4): Flag on COUP, defined as follows: N = no X-ray counterpart detected; ? = uncertain COUP assignment; k = COUP 814 lies very near the position of 166-519, but may instead be associated with a companion. See Section 4.2. O = candidate is outside the COUP FOV. Note (5): "I-front" indicates ionization front apparent.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 7 A7 --- [OW94] Object name as in O'Dell & Wong, J/AJ/111/846 9- 10 I2 h RAh Hour of Right Ascension (J2000.0) 12- 13 I2 min RAm Minute of Right Ascension (J2000.0) 15- 19 F5.2 s RAs Second of Right Ascension (J2000.0) 21 A1 --- DE- Sign of the Declination (J2000.0) 22- 23 I2 deg DEd Degree of Declination (J2000.0) 25- 26 I2 arcmin DEm Arcminute of Declination (J2000.0) 28- 31 F4.1 arcsec DEs Arcsecond of Declination (J2000.0) 33- 36 I4 --- COUP ? COUP source number 38 A1 --- n_Offset [*] n/a 39- 42 F4.2 arcsec Offset ? Offset between visual position (as determined from ACS image) and COUP X-ray source position 44- 65 A22 --- Com Comments
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Proplyd name (G1) 11- 19 A9 --- SpType Spectral type 21- 24 F4.2 mag AV ? The V band extinction 26- 29 I4 --- COUP The COUP number 31- 35 F5.1 ks Exp Effective exposure time 37- 41 I5 ct Cts Net photon counts after background subtraction 43- 47 F5.2 --- HR2 ? COUP X-ray hardness ratio 2 (1) 49- 52 F4.2 --- e_HR2 ? Uncertainty in HR2 54- 58 F5.2 --- HR3 ? COUP X-ray hardness ratio 3 (2) 60- 63 F4.2 --- e_HR3 ? Uncertainty in HR3 65- 68 F4.1 [cm-2] logNH Log of the hydrogen absorbing column (3) 70- 73 F4.1 [mW/m2] logL Log of the total 0.5-8keV luminosity (4)
Note (1): Defined as (Cs-Cm)/(Cs+Cm) where Cs is counts in the 0.5-1.7keV band and Cm is counts in the 1.7-2.8keV band. Note (2): Defined as (Cm-Ch)/(Cm+Ch) where Cm is counts in the 1.7-2.8keV band and Ch is counts in the 2.8-8.0keV band. Note (3): Derived from spectral model fitting. Note (4): Corrected for absorption, as derived from spectral model fitting and in units of erg/s/cm2.
Global Notes: Note (G1): Proplyd candidates with prefix "d" are from lists in Bally et al. (2000AJ....119.2919B) or Smith et al. (2005AJ....129..382S): [BOM2000] dSSs-MSS or [BOM2000] dSSs-MMSS in Simbad; all other candidates are from O'Dell & Wong (1996, Cat. J/AJ/111/846): [OW94] SSs-MSS or [OW94] SSs-MMSS in Simbad.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 05-Jul-2006
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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