J/AJ/129/829 Hα emission stars in NGC 2264 (Dahm+, 2005)
The T Tauri star population of the young cluster NGC 2264.
Dahm S.E., Simon T.
<Astron. J., 129, 829-855 (2005)>
=2005AJ....129..829D 2005AJ....129..829D
ADC_Keywords: Clusters, open ; Stars, pre-main sequence ; Photometry, Cousins ;
Equivalent widths ; Stars, emission
Keywords: accretion, accretion disks -
open clusters and associations: individual (NGC 2264) -
stars: formation - stars: pre-main-sequence - stars: rotation
Abstract:
An Hα emission survey of the young cluster NGC 2264 in the
Mon OB1 association resulted in the detection of 490 Hα emission
stars in a 25'x40' field approximately centered between the O7 V
multiple star S Mon and the Cone Nebula. The survey was carried out
with the wide-field grism spectrograph (WFGS) on the University of
Hawaii 2.2m telescope on Mauna Kea. X-ray observations made with the
European Photon Imaging Camera (EPIC) on board the European Space
Agency's XMM-Newton satellite observatory will be discussed in a
subsequent paper. Optical (BVRCIC) photometry was obtained for
selected fields to supplement similar data from the literature.
Spectra covering the 6000-8000Å region at a resolution of R∼3000
(adequate for the determination of Li I λ6708 line strengths)
were obtained for 150 Hα and X-ray emission sources with the
Gemini Multi-Object Spectrograph (GMOS).
Description:
An Hα emission survey of NGC 2264 was conducted between 1990
January and 2003 January using the Wide Field Grism Spectrograph
(WFGS) at the f/10 Cassegrain focus of the University of Hawaii (UH)
2.2m telescope on Mauna Kea.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 116 490 Hα emission stars in NGC 2264
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See also:
J/AJ/127/2228 : VRI photometry of PMS stars in NGC 2264 OB (Makidon+, 2004)
J/A+A/417/557 : Rotation + variability of PMS Stars in NGC 2264 (Lamm, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- DS Identification number
(Cl* NGC 2264 DS NNN in Simbad)
5- 6 I2 h RAh Hour of Right Ascension (J2000) (1)
8- 9 I2 min RAm Minute of Right Ascension (J2000) (1)
11- 15 F5.2 s RAs Second of Right Ascension (J2000) (1)
17 A1 --- DE- Sign of the Declination (J2000) (1)
18- 19 I2 deg DEd Degree of Declination (J2000) (1)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000) (1)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1)
29- 33 F5.2 mag Vmag ? The V band magnitude (2)
35- 38 F4.2 mag V-Rc ? The (V-Rc) color (2)
40- 43 F4.2 mag V-Ic ? The (V-Ic) color (2)
45- 49 F5.2 mag Jmag ? 2MASS (Cat. II/246) J band magnitude
51- 54 F4.2 mag J-H ? 2MASS (Cat. II/246) (J-H) color
56- 59 F4.2 mag H-K ? 2MASS (Cat. II/246) (H-K) color
61- 68 A8 --- SpType Spectral type (3)
70- 75 F6.2 0.1nm EW(Ha) ? Hα equivalent width in Angstroms (4)
76 A1 --- f_EW(Ha) [:k] Flag on EW(Ha) (5)
78- 81 F4.2 0.1nm EW(Li) ? LiI equivalent width in Angstroms (6)
82 A1 --- u_EW(Li) Uncertainty flag in EW(Li)
84- 88 F5.2 [10-7W] logL ? Log of the XMM-EPIC X-ray luminosity
in units of erg/s
90- 94 F5.2 [10-7W] e_logL ? The 1σ error in logL
96- 99 A4 --- Ha Known emission source Hα number (7)
101-106 A6 --- RMS The Rebull et al. (2002, Cat. J/AJ/123/1528)
number (Cl* NGC 2264 RMS NNNN in Simbad)
108-115 A8 --- GCVS General Catalog of Variable Stars designation
(Cat. II/250)
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Note (1): Astrometry obtained from plate solutions for UH 2.2 meter optical
imaging, literature, DSS, or SIMBAD
Note (2): Optical photometry from UH 2.2m, Sung et al. (1997AJ....114.2644S 1997AJ....114.2644S),
Flaccomio et al. (1999, Cat. J/A+A/345/521), Park et al.
(2000AJ....120..894P 2000AJ....120..894P), Rebull et al. (2002, Cat. J/AJ/123/1528),
or Lamm et al. (2004, Cat. J/A+A/417/557).
Note (3): Spectral types from GMOS data or the literature.
Note (4): From WFGS or GMOS spectroscopy.
Note (5): Flag on EW(Ha), defined as follows:
: = uncertain value;
k = Strong emission with weak or no continuum.
Note (6): From GMOS spectroscopy.
Note (7): Known emission source Hα number, defined as follows:
LNNN = LkHA NNN (Herbig, 1954ApJ...119..483H 1954ApJ...119..483H);
KNNN = KHA NNN (Ogura, 1984PASJ...36..139O 1984PASJ...36..139O);
ENNN = ESO-HA NNN (Reipurth et al., 2004AJ....127.1117R 2004AJ....127.1117R);
HNNN = HBC NNN;
NNN = IfAHA NNN. If previously unknown, an IfAHA number was assigned
continuing the numbering convention of Herbig (1998, Cat.
J/ApJ/497/736), Herbig & Dahm (2002, Cat. J/AJ/123/304),
and Herbig et al. (2004, Cat. J/AJ/128/1233).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 23-Aug-2005