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J/MNRAS/390/1185  JHK photometry in 2 star-forming regions   (Anandarao+, 2008)

Near-infrared photometry and radio continuum study of the massive star-forming regions IRAS 21413+5442 and IRAS 21407+5441. Anandarao B.G., Venkata Raman V., Ghosh S.K., Ojha D.K., Kumar M.S.N. <Mon. Not. R. Astron. Soc., 390, 1185-1194 (2008)> =2008MNRAS.390.1185A
ADC_Keywords: Associations, stellar ; H II regions ; Photometry, infrared Keywords: stars: formation - dust, extinction - H II regions - infrared: stars - radio continuum: general Abstract: IRAS 21413+5442 and IRAS 21407+5441 are two massive star-forming regions of high luminosity, likely associated with each other. Near-infrared (NIR) photometry on these two IRAS sources was performed at United Kingdom Infrared Telescope (UKIRT) using the UFTI under excellent seeing conditions yielding an angular resolution of ∼0.5arcsec. Our results reveal details of stellar content to a completeness limit (90 per cent) of J=18.5, H=18.0 and K=17.5mag in the two regions. In IRAS 21413+5442, we identify a late O-type star, having large H-K colour, to be near the centre of the CO jets observed by earlier authors. The UKIRT images reveal in IRAS 21407+5441, a faint but clear compact HII region around a central high- and intermediate-mass star cluster. We have detected a number of sources with large H-K colour which are not detected in J band. We also present the GMRT radio continuum map at 1.28GHz covering the entire region surrounding the two star-forming clouds. Description: Subarcsec resolution JHK photometry was performed at UKIRT during 2005 July 17 on the two objects under excellent seeing conditions (∼0.5arcsec) using the UFTI (HAWAII- 1 1024x1024 ) camera. The radio continuum observations in the 1.280-GHz frequency band (with a bandwidth of 16MHz) were made on 2003 August 1 at the Giant Metrewave Radio Telescope (GMRT), operated by National Centre for Radio Astrophysics (NCRA), Tata Institute of Fundamental Research (TIFR) near Pune (India). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 49 86 UKIRT JHK photometry of sources in the central HII regions (Cluster 1) of IRAS 21413+5442 table2.dat 49 62 UKIRT JHK photometry of sources in the central cluster (Cluster 2C) of IRAS 21407+5441 table3.dat 49 30 UKIRT JHK photometry of sources in the north-eastern cluster (Cluster 2N) of IRAS 21407+5441
Byte-by-byte Description of file: table1.dat table2.dat table3.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right ascension (J2000) 4- 5 I2 min RAm Right ascension (J2000) 7- 11 F5.2 s RAs Right ascension (J2000) 13 A1 --- DE- Declination sign (J2000) 14- 15 I2 deg DEd Declination (J2000) 17- 18 I2 arcmin DEm Declination (J2000) 20- 24 F5.2 arcsec DEs Declination (J2000) 26- 31 F6.3 mag Hmag UKIRT H magnitude 33- 36 F4.2 mag H-K UKIRT H-K colour index 38- 41 F4.2 mag J-H ? UKIRT colour index (1) 43- 46 F4.1 mag AV ? Absorption in V band 48- 49 I2 --- Seq ? Sequential number for stars with IR excesses in T Tauri region and beyond (2)
Note (1): The stars listed after the gap are detected only in HK bands. Note (2): Stars identified as: * [AVG2008] Cluster 1 NN for table1.dat * [AVG2008] Cluster 2C NN for table2.dat * [AVG2008] Cluster 2N NN for table3.dat
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 04-May-2009
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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