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J/AJ/131/1530        Hα emission stars in LDN988           (Herbig+, 2006)

The pre-main-sequence population of L988. Herbig G.H., Dahm S.E. <Astron. J., 131, 1530-1543 (2006)> =2006AJ....131.1530H
ADC_Keywords: Molecular clouds ; Stars, emission ; Stars, pre-main sequence ; Photometry, VRI ; Photometry, infrared Keywords: ISM: individual (Lynds 988) - stars: emission-line, Be - stars: individual (LkHα 324) - stars: pre-main-sequence Abstract: L988 is a large (∼0.5°x0.7°) dark cloud complex at about 600pc that contains several bright pre-main-sequence objects (such as V1331 Cyg and LkHα 321), but this paper deals in detail only with a small region on its eastern edge, near the HAeBe star LkHα 324. That star and its distant companion LkHα 324SE lie at the apex of a V-shaped area apparently excavated from the edge of L988, and are the brightest members of a small cluster containing about 50 Hα-emission stars. Description: Optical VRCIC images of the L988 cloud were obtained in 1999 October and 2003 November at the f/10 focus of the University of Hawaii (UH) 2.2m telescope on Mauna Kea. The Hα emission survey of the L988 cloud was carried out in 2001 July, 2003 August, and 2003 October with the Wide Field Grism Spectrograph (WFGS) at the same telescope. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 81 65 Hα emission stars in L988
See also: J/AJ/123/2597 : Halpha stars and HH objects near BRCs (Ogura+, 2002) J/AJ/127/1117 : Halpha emission-line stars in NGC2264 (Reipurth+, 2004) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- IfAHA ? IHα number (IfAHA NNN in Simbad) 5- 6 I2 h RAh Hour of Right Ascension (J2000.0) (1) 8- 9 I2 min RAm Minute of Right Ascension (J2000.0) (1) 11- 15 F5.2 s RAs Second of Right Ascension (J2000.0) (1) 17 A1 --- DE- Sign of the Declination (J2000.0) (1) 18- 19 I2 deg DEd Degree of Declination (J2000.0) (1) 21- 22 I2 arcmin DEm Arciminute of Declination (J2000.0) (1) 24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000.0) (1) 29- 33 F5.2 mag Vmag ? Johnson V magnitude (2) 35- 38 F4.2 mag V-Rc ? Johnson-Cousins V-R color index (2) 40- 43 F4.2 mag V-Ic ? Johnson-Cousins V-I color index (2) 45- 49 F5.2 mag Jmag ? 2MASS J magnitude (3) 51- 54 F4.2 mag J-H ? 2MASS J-H color index (3) 56- 59 F4.2 mag H-K ? 2MASS H-K color index (3) 61- 81 A21 --- Com EW(Ha) and other comments (4)
Note (1): Astrometry obtained from plate solutions on UH 2.2m telescope optical images. Note (2): Optical photometry from the UH 2.2m telescope. Note (3): NIR photometry obtained from the 2MASS Point Source Catalog (Cat. II/246). Note (4): From WFGS (Wide Field Grism Spectrograph) spectroscopy. (em means "very weak continuum; strong emission probable")
History: From electronic version of the journal
(End) Marianne Brouty [CDS] 01-Mar-2007
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