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J/AJ/116/1816       JHKLMNOPQ photometry in Orion cluster   (Hillenbrand+, 1998)

Circumstellar disks in the Orion nebula cluster. Hillenbrand L.A., Strom S.E., Calvet N., Merrill K.M., Gatley I., Makidon R.B., Meyer M.R., Skrutskie M.F. <Astron. J. 116, 1816 (1998)> =1998AJ....116.1816H
ADC_Keywords: Clusters, open ; Photometry, infrared Keywords: galaxies: open clusters and associations - stars: circumstellar matter - stars: formation - stars: premain-sequence Abstract: We combine our previous optical spectroscopic and photometric analysis of 1600 stars located in the Orion Nebula Cluster (ONC) with our own and published near-infrared photometric surveys of the region in order to investigate the evidence for and properties of circumstellar disks. We use the near-infrared continuum excess as our primary disk diagnostic, although we also study sources with Ca II triplet emission and those designated as "proplyds." Objects: Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 05 35 12 -05 24.1 Orion cluster ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 85 1576 *Infrared and emission-line properties of ONC stars
Note on table1.dat: Version of the table dated July 2001 (see "History" section below)
See also: II/171 : Parenago Catalog of Stars in Orion Nebula (Parenago 1954) J/AJ/113/1733 : Orion Nebula Cluster population (Hillenbrand 1997) J/ApJ/540/236 : KH photometry of Orion Nebula Cluster (Hillenbrand+, 2000) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID Identification number (1) 5 A1 --- m_ID [ab] Multiplicity index in ID 7- 12 F6.3 mag Jmag ?=-9.99 J magnitude 14- 19 F6.3 mag Hmag ?=-9.99 H magnitude 20 A1 --- u_Hmag Uncertainty flag (:) on Hmag 21 A1 --- l_Kmag [>] Limit flag on Kmag 22- 27 F6.3 mag Kmag ?=-9.99 K magnitude 29- 33 F5.2 mag Lmag ?=-9.99 L magnitude 34 A1 --- u_Lmag Uncertainty flag (:) on Lmag 36- 40 F5.2 mag Mmag ?=-9.99 M magnitude 41 A1 --- u_Mmag Uncertainty flag (:) on Mmag 43- 47 F5.2 mag Nmag ?=-9.99 N magnitude 48 A1 --- u_Nmag Uncertainty flag (:) on Nmag 50- 54 F5.2 mag Qmag ?=-9.99 Q magnitude 57- 69 A13 --- Ref Comma-separated list of references (2) 72- 76 F5.2 mag D(I-K) ?=-9.99 Delta(I-K) (3) 78- 84 F7.1 0.1nm WCaII ?=-1000. Ca II width (4) 85 A1 --- u_WCaII Uncertainty flag on WCaII (5)
Note (1): Adopted "red" identification number: 1-1053 from Jones & Walker, 1988AJ.....95.1755J 1054-2999 from Parenago, 1954, Cat. II/171 3000-3999 from Hillenbrand 1997, Cat. J/AJ/113/1733 (1993, January CCD data) 5000-5999 from Hillenbrand 1997, Cat. J/AJ/113/1733 (1995, January CCD data) 9000-9999 from Prosser et al., 1994ApJ...421..517P (number here is 9000 + original number) Note (2): References are numbered as follows: 1 = This paper, SQIID data 2 = This paper, NICMASS data 3 = This paper, OTTO data 4 = Ali & DePoy, 1995AJ....110.2415A 5 = McCaughrean & Stauffer, 1994AJ....108.1382M 6 = McCaughrean & O'Dell, 1996AJ....111.1977M 7 = Hayward & McCaughrean, 1997AJ....113..346H 8 = Jones et al., 1994, Cat. J/AJ/107/2120 9 = Hyland, Allen, & Bailey 1993 (references not specified) (as reported by Samuel 1993, Ph.D. thesis, Australian National Univ.) 10 = Rydgren & Vrba, 1984AJ.....89..399R 11 = Breger et al., 1981ApJ...248..963B 12 = Smith, 1976, Ph.D. thesis, Univ. Wyoming 13 = Penston et al., 1975MNRAS.171..219P or Penston, 1973ApJ...183..505P 14 = Ney et al., 1973ApJ...180..809N 15 = Johnson et al., 1990AJ....100..518J 16 = Petr et al., 1998ApJ...500..825P 17 = Marschall & Mathieu, 1988AJ.....96.1956M 18 = Hillenbrand & Carpenter 2000, Cat. J/ApJ/540/236 Note (3): Δ(I-K) = (IC-K)observed - 0.5*AV - (IC-K)photosphere is an index used to quantify the magnitude of near-infrared excess. Negative values of Delta(IC-K) can be produced by errors in spectral typing, errors in photometry, and photometric variability; see text. Note (4): Equivalent width of the Ca II 8542 line. Standard stars have an absorption equivalent width that is constant to within 20% from spectral type F2 to K7 at 3 Angstroms, and decreasing over the range K7-M5 to 1.5 Angstroms. Values of 0.0 indicate that neither emission nor absorption features were apparent from visual inspection of the spectrum. Note that the Pa 8548 line is blended with the Ca II line at our spectral resolution. "-1000" indicate that no data are available. Note (5): ":" indicates probable contamination in the Ca II measurement from Pa emission, based on the strength of the Pa 8600 line.
History: * 08-Dec-1998: From AJ electronic version * 02-Sep-2005: Copied the more recent version dated July 2001 from http://www.astro.caltech.edu/~lah/papers/orion_disks.table1a.working
(End) James Marcout, Patricia Bauer [CDS] 08-Dec-1998
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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