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J/BaltA/17/125      Interstellar reddening in 3 HII regions    (Straizys+, 2008)

2MASS two-color interstellar reddening line in the direction of the North America and Pelican nebulae and the Cyg OB2 association. Straizys V., Corbally C.J., Laugalys V. <Baltic Astron., 17, 125-142 (2008)> =2008BaltA..17..125S
ADC_Keywords: H II regions ; Photometry, infrared Keywords: ISM: extinction, clouds: individual (L 935) - ISM: H II regions: individual (North America Nebula, Pelican Nebula) - associations: individual (Cyg OB2) - stars: fundamental parameters Abstract: The slope of the interstellar reddening line in the J-H vs. H-Ks diagram of the 2MASS survey in the direction of the North America and Pelican nebulae, the L 935 dust cloud and the Cyg OB2 association is determined. The MK types were either classified by C.J. Corbally or collected from the literature. The ratio E(J-H)/E(H-Ks)=2.0 is obtained by taking the average for the four groups of spectral classes: O3-B1, B2-B6, B7-B9.5 and red clump giants. The obtained ratio is among the largest values of E(J-H)/E(H-Ks) determined till now. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 83 206 O-B stars in the vicinity of the North America and Pelican nebulae and in the Cyg OB2 association notes.dat 79 31 Individual notes
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1 A1 ---- r_Name [bMC] Reference for Cyg OB2 objects (1) 3- 13 A11 --- Name Star name (2) 14 A1 --- n_Name [*] * indicates a note in notes.dat file 16- 25 A10 --- BD/HD BD or HD name 27- 28 I2 h RAh Right ascension (J2000) 30- 31 I2 min RAm Right ascension (J2000) 33- 37 F5.2 s RAs Right ascension (J2000) 39 A1 --- DE- Declination sign (J2000) 40- 41 I2 deg DEd Declination (J2000) 43- 44 I2 arcmin DEm Declination (J2000) 46- 49 F4.1 arcsec DEs Declination (J2000) 51- 55 F5.2 mag Vmag ?=- V magnitude 57- 67 A11 --- SpType MK spectral type 68- 69 A2 --- r_SpType Reference for SpType (3) 71- 76 F6.3 mag J-H ?=- 2MASS J-H colour index 78- 83 F6.3 mag H-Ks ?=- 2MASS H_Ks colour index
Note (1): Reference for Cyg OB2 objects as follows: b = Cyg OB2 association: brightest stars M = Cyg OB2 association: Massey & Thompson 1991, Cat. J/AJ/101/1408 C = Cyg OB2 association: Comeron et al. (2002A&A...389..874C) stars Note (2): Origin of names: ALS = Reed (1998, Cat. J/ApJS/115/271; 2005, Cat. V/125) CP05 = Comeron & Pasquali (2005A&A...430..541C), [CP2005] NN in Simbad CPR02 = Comeron et al. (2002A&A...389..874C), [CPR2002] ANN in Simbad MT91 = Massey & Thompson 1991, Cat. J/AJ/101/1408, [MT91] NNN in Simbad SMV89 = Straizys et al. 1989VilOB..83....3S, [SMV89] NNN in Simbad SKV-2 = Straizys et al. 1993, Cat. II/196, [SKV93] 2-NNN in Simbad LS02 = Laugalys & Straizys (2002BaltA..11..205L) LSV06-1 = Laugalys et al. (2006BaltA..15..327L) LSV06-22 = Laugalys et al. 2006, Cat. J/BaltA/15/483, Table 2, [LSV2006] Area II NNN in Simbad LSV07 = Laugalys et al. (2007BaltA..16..349L), Cl* Collinder 428 LSV NNN in Simbad VI Cyg = numbers of the Cyg OB2 association stars from Johnson & Morgan (1954ApJ...119..344J) and Morgan et al. (1954PASP...66...85M), Schulte NNA in Simbad. VI Cyg is the former name of the Cyg OB2 association. Note (3): References for SpType as follows: * = published in Straizys et al. (1999BaltA...8..355S) ** = published in the present table
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Name Star name 13- 79 A67 --- Note Text of the note (1)
Note (1): Interstellar extinction values AV are from Laugalys & Straizys (2002BaltA..11..205L)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Nov-2008
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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