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J/A+A/507/1485  Young (proto)stellar population in L1630    (Mookerjea+ 2009)

Young stars and protostellar cores near NGC 2023. Mookerjea B., Sandell G., Jarrett T.H., McMullin J.P. <Astron. Astrophys., 507, 1485-1502 (2009)> =2009A&A...507.1485M
ADC_Keywords: H II regions ; YSOs ; Photometry, infrared Keywords: dust, extinction - ISM: clouds - infrared: ISM Abstract: We investigate the young (proto)stellar population in NGC 2023 and the L 1630 molecular cloud bordering the H II region IC 434, using Spitzer IRAC and MIPS archive data, JCMT SCUBA imaging and spectroscopy as well as targeted BIMA observations of one of the Class 0 protostars, NGC 2023 MM 1. We study the distribution of gas, dust and young stars in this region to see where stars are forming, whether the expansion of the H II region has triggered star formation, and whether dense cold cores have already formed stars. We have performed photometry of all IRAC and MIPS images, and used color-color diagrams to identify and classify all young stars seen within a 22'x26' field along the boundary between IC 434 and L 1630. Description: The observations of NGC 2023 MM 1/MM 2 were made on Dec. 13, 1999 and April 13, 2000 using one frequency setting in the C-array configuration of the Berkeley-Illinois-Maryland Association (BIMA) interferometric array. We obtained several large scan maps (8'x8') of the NGC 2023 region with the Submillimeter Common User Bolometer Array (SCUBA) on JCMT during SCUBA commissioning time on four nights in December, 1997. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 154 95 Coordinates and flux densities of MIR sources detected in the vicinity of NGC 2023 table3.dat 154 31 Coordinates and flux densities of 2MASS & IRAC 3.6/4.5um PMS sources in NGC 2023/L 1630 table4.dat 154 10 Sources detected only in the MIPS 24um
Byte-by-byte Description of file: table[234].dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [L1630] 6- 12 A7 --- Src Source designation: MIR-NN (table2), NIR-NN (table3) or MIPS-NN (table4) 13 A1 --- n_Src [ac] note on source (1) 15 I1 h RAh Right ascension (J2000) 17- 18 I2 min RAm Right ascension (J2000) 20- 24 F5.2 s RAs Right ascension (J2000) 26 A1 --- DE- Declination sign (J2000) 27 I1 deg DEd Declination (J2000) 29- 30 I2 arcmin DEm Declination (J2000) 32- 35 F4.1 arcsec DEs Declination (J2000) 37- 41 F5.2 mag Jmag ?=- 2MASS J magnitude 43- 46 F4.2 mag e_Jmag ?=- rms uncertainty on Jmag 48- 52 F5.2 mag Hmag ?=- 2MASS H magnitude 54- 57 F4.2 mag e_Hmag ?=- rms uncertainty on Hmag 59- 63 F5.2 mag Ksmag ?=- 2MASS Ks magnitude 65- 68 F4.2 mag e_Ksmag ?=- rms uncertainty on Ksmag 70- 75 F6.2 mJy F3.6 ?=- Spitzer/IRAC 3.6um flux density 77- 80 F4.2 mJy e_F3.6 ?=- rms uncertainty on F3.6 81 A1 --- n_F3.6 [b] b: 3.6 photometry is unreliable due to severe contamination from PAH emission 82- 88 F7.3 mJy F4.5 ?=- Spitzer/IRAC 4.5um flux density 90- 93 F4.2 mJy e_F4.5 ?=- rms uncertainty on F4.5 95-101 F7.2 mJy F5.8 ? Spitzer/IRAC 5.8um flux density 103-106 F4.2 mJy e_F5.8 ? rms uncertainty on F5.8 108-114 F7.2 mJy F8.0 ? Spitzer/IRAC 8.0um flux density 116-118 F3.1 mJy e_F8.0 ? rms uncertainty on F8.0 120-127 F8.2 mJy F24 ?=- Spitzer/MIPS 24um flux density 129-134 F6.1 mJy e_F24 ?=- rms uncertainty on F24 136-147 A12 --- OName Other name (2) 149-154 A6 --- Class Class based on selected color-color plots (3)
Note (1): Notes as follows: a = Hα emission line star Weaver & Babcock, 2004PASP..116.1035W c = completely hidden in the Airy pattern of the of the exceedingly bright star L1630MIR-72 at both 5.8 and 8.0 Note (2): sources of the names are: * Integers correspond to NIR sources detected by Depoy et al., 1990ApJ...356L..55D, * alphabet B-F are for sources identified by Sellgren 1983AJ.....88..985S, <[S83b] NGC 2023 A> in Simbad * WB stands for sources detected by Weaver & Babcock 2004PASP..116.1035W, <[WB2004] NN> in Simbad * W are sources detected by Witt et al. 1984ApJ...281..708W, <[S83b] NGC 2023 NNN> in Simbad * B33 names are from Bowler et al. 2009AJ....137.3685B, <[RB84] B33-NN> in Simbad Note (3): class is I, II, III for protostars / young stars, and 'S' for stars.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Jan-2011
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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