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 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:
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RA (2000) DE Designation(s)
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05 35 12 -05 24.1 Orion cluster
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 85 1576 *Infrared and emission-line properties of ONC stars
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Note on table1.dat: Version of the table dated July 2001
(see "History" section below)
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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
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Bytes Format Units Label Explanations
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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 Δ(I-K) (3)
78- 84 F7.1 0.1nm WCaII ?=-1000. Ca II width (4)
85 A1 --- u_WCaII Uncertainty flag on WCaII (5)
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Note (1): Adopted "red" identification number:
1-1053 from Jones & Walker, 1988AJ.....95.1755J 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 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 1995AJ....110.2415A
5 = McCaughrean & Stauffer, 1994AJ....108.1382M 1994AJ....108.1382M
6 = McCaughrean & O'Dell, 1996AJ....111.1977M 1996AJ....111.1977M
7 = Hayward & McCaughrean, 1997AJ....113..346H 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 1984AJ.....89..399R
11 = Breger et al., 1981ApJ...248..963B 1981ApJ...248..963B
12 = Smith, 1976, Ph.D. thesis, Univ. Wyoming
13 = Penston et al., 1975MNRAS.171..219P 1975MNRAS.171..219P or Penston, 1973ApJ...183..505P 1973ApJ...183..505P
14 = Ney et al., 1973ApJ...180..809N 1973ApJ...180..809N
15 = Johnson et al., 1990AJ....100..518J 1990AJ....100..518J
16 = Petr et al., 1998ApJ...500..825P 1998ApJ...500..825P
17 = Marschall & Mathieu, 1988AJ.....96.1956M 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.
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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