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J/A+A/420/945       L1551 ISOCAM observations                (Galfalk+, 2004)

ISOCAM observations of the L1551 star formation region. Galfalk M., Olofsson G., Kaas A.A., Olofsson S., Bontemps S., Nordh L., Abergel A., Andre P., Boulanger F., Burgdorf M., Casali M.M., Cesarsky C.J., Davies J., Falgarone E., Montmerle T., Perault M., Persi P., Prusti T., Puget J.L., Sibille F. <Astron. Astrophys. 420, 945 (2004)> =2004A&A...420..945G
ADC_Keywords: Infrared sources ; Stars, pre-main sequence ; Stars, late-type ; Photometry, infrared Keywords: stars: formation - stars: low-mass, brown dwarfs - stars: pre-main sequence - stars: late-type - infrared: stars Abstract: The results of a deep mid-IR ISOCAM survey of the L1551 dark molecular cloud are presented. The aim of this survey is a search for new YSO (Young Stellar Object) candidates, using two broad-band filters centred at 6.7 and 14.3µm. Although two regions close to the centre of L1551 had to be avoided due to saturation problems, 96 sources were detected in total (76 sources at 6.7µm and 44 sources at 14.3µm). Using the 24 sources detected in both filters, 14 were found to have intrinsic mid-IR excess at 14.3µm and were therefore classified as YSO candidates. Using additional observations in B, V, I, J, H and K obtained from the ground, most candidates detected at these wavelengths were confirmed to have mid-IR excess at 6.7µm as well, and three additional YSO candidates were found. Description: Six regions (total area 0.122sq.deg.) were observed 26 27 September 1997 with ISOCAM, avoiding the mid-IR bright regions around IRS 5/NE and HL/XZ Tau due to saturation problems. The B, V, and I observations were carried out on 1 and 3 December 2001 using the ALFOSC instrument (Andalucia Faint Object Spectrograph and Camera) mounted on the 2.56m NOT telescope. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 121 102 All ISOCAM sources in L1551 with additional optical, near-IR photometry and source comments table2.tex 159 177 LaTeX version of table2
See also: J/A+A/350/883 : R CrA ISOCAM observations (Olofsson+, 1999) J/A+A/357/219 : Cha I ISOCAM observations (Persi+, 2000) J/A+A/372/173 : rho Ophiuchi cloud ISOCAM observations (Bontemps+, 2001) J/A+A/318/879 : IR photometry of L1551/IRS5 (Men'shchikov+ 1997) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq ISOCAM (L1551) source number 3 A1 --- n_Seq [)] ) indicates YSO candidates based on mid-IR excess emission in the ISOCAM m(6.7)-m(14.3) index 5- 6 I2 h RAh Right ascension (J2000) 8- 9 I2 min RAm Right ascension (J2000) 11- 14 F4.1 s RAs Right ascension (J2000) 17 A1 --- DE- Declination sign (J2000) 18- 19 I2 deg DEd Declination (J2000) 21- 22 I2 arcmin DEm Declination (J2000) 24- 25 I2 arcsec DEs Declination (J2000) 27- 31 F5.2 mJy S6.7um ? Flux at 6.7 micron 32 A1 --- u_S6.7um Uncertainty flag on S6.7um 34- 38 F5.2 mJy S14.3um ? Flux at 14.3 micron 39 A1 --- u_S14.3um Uncertainty flag on S14.3um 41- 45 F5.2 mag Bmag ? B magnitude 46 A1 --- n_Bmag [d] d: USNO A-2 catalogue has been used 48- 52 F5.2 mag Vmag ? V magnitude 53 A1 --- n_Vmag [:os] : for uncertainty, o for out and s for saturated 55- 58 F4.1 mag Rmag ? R magnitude 60- 64 F5.2 mag Imag ? I magnitude 65 A1 --- n_Imag [os] o for out and s for saturated 67- 71 F5.2 mag Jmag ? J magnitude 74- 78 F5.2 mag Hmag ? H magnitude 81- 85 F5.2 mag Ksmag ? Ks magnitude 86 A1 --- n_Ksmag [e] e: K-band magnitude (ARNICA/NOT) 88- 92 F5.2 mag m(6.7) ? 6.7 micron magnitude 93 A1 --- u_m(6.7) Uncertainty flag on m(6.7) 95- 99 F5.2 mag m(14.3) ? 14.3 micron magnitude 100 A1 --- u_m(14.3) Uncertainty flag on m(14.3) 102-121 A20 --- Rem Remarks (1)
Note (1): Notes and references: a: Carkner et al., 1996ApJ...464..286C b: Briceno et al., 1998AJ....115.2074B c: Giovanardi et al., 2000ApJ...538..728G Could be an extragalactic triple radio source (Rodriguez & Canto 1983RMxAA...8..163R) f: XMM-Newton-15, Favata et al., 2003A&A...403..187F g: XMM-Newton-35 h: XMM-Newton-49
Acknowledgements: Magnus Galfalk
(End) Patricia Bauer [CDS] 05-Apr-2004
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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