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J/A+A/500/1045   Cool stars and brown dwarfs in Lupus clouds   (Comeron+, 2009)

A new population of cool stars and brown dwarfs in the Lupus clouds. Comeron F., Spezzi L., Lopez Marti B. <Astron. Astrophys., 500, 1045-1063 (2009)> =2009A&A...500.1045C
ADC_Keywords: Molecular clouds; Stars, pre-main sequence; Photometry, infrared Keywords: stars: low-mass, brown dwarfs - stars: formation - stars: pre-main sequence - ISM: individual objects: Lupus - ISM: clouds Abstract: Most studies of the stellar and substellar populations of star-forming regions rely on using the signatures of accretion, outflows, disks, or activity characterizing the early stages of stellar evolution. However, these signatures rapidly decay with time. We present the results of a wide-area study of the stellar population of clouds in the Lupus star-forming region. When combined with 2MASS photometry, our data allow us to fit the spectral energy distributions of over 150000 sources and identify possible new members based on their photospheric fluxes, independent of any display of the signposts of youth. Description: We used the Wide Field Imager (WFI) at the La Silla 2.2m telescope to image an area of more than 6 square degrees in the Lupus 1, 3 and 4 clouds in the Rc, Ic, and zWFI bands, selected so as to overlap with the areas observed in the Spitzer Legacy Program "From molecular cores to planet-forming disks". We complement our data with 2MASS photometry to sample the spectral energy distribution from 0.6um to 2.2um. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 101 105 Derived physical parameters for known, non-saturated members of Lupus 1, 3, and 4 table9.dat 122 143 New candidate members of Lupus 1, 3, and 4 notes.dat 80 65 Individual notes
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) J/A+A/454/595 : X-ray emission of T Tau stars in Lupus 3 (Gondoin, 2006) J/A+AS/123/329 : New weak-line T Tauri stars in Lupus (Krautter+ 1997) J/A+A/320/185 : UBVRIcJHKL photometry in Lup (Wichmann+ 1997) J/MNRAS/331/474 : ubvyβ photometry in the Lupus dark cloud (Franco, 2002) J/ApJ/658/480 : Pre-main-sequence stars in Lupus association (Makarov+, 2007) J/ApJS/177/551 : Spitzer c2d survey XI. Lupus with IRAC and MIPS (Merin+ 2008) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [Lupus] 7 I1 --- Lup Lupus region (1, 3, or 4) 9- 23 A15 --- SSTc2dJ Object name (HHMMSS.s+DDMMSS, J2000) 25- 29 I5 K Teff Effective temperature 31- 37 F7.4 solLum L Estimated luminosity 39- 42 F4.1 mag AV Absorption in V band 44- 48 F5.3 solMass Mass ?=- Estimated stellar mass 51 A1 --- l_Age Limit flag on Age 52- 56 F5.1 Myr Age ? Estimated age 59- 68 A10 --- ONames Other name(s) 70- 71 A2 --- Mm Membership reference (1) 73- 80 A8 --- SpT MK spectral type 83- 87 A5 --- r_SpT Spectral type references (2) 89-101 A13 --- Notes Notes, in notes.dat file
Note (1): Membership references as follows:: m1 = Schwartz, 1977ApJS...35..161S m2 = Allers et al., 2006ApJ...644..364A m3 = Merin et al., 2008, ApJ, submitted m4 = Chapman et al., 2007ApJ...667..288C m5 = Lopez Marti et al., 2005A&A...440..139L m6 = Allen et al., 2007ApJ...655.1095A m7 = Nakajima et al., 2000AJ....119..873N m8 = Comeron et al., 2003A&A...406.1001C m9 = Merin et al., 2007ApJ...661..361M Note (2): Spectral type references as follows: s1 = Hughes et al., 1994AJ....108.1071H s2 = Jayawardhana & Ivanov, 2006ApJ...647L.167J s3 = Luhman et al., 2007ApJ...659.1629L s4 = Allen et al., 2007ApJ...655.1095A s5 = Comeron et al., 2003A&A...406.1001C s6 = Merin et al., 2007ApJ...661..361M s7 = Lopez Marti et al., 2005A&A...440..139L
Byte-by-byte Description of file: table9.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [Lupus] 7 I1 --- Lup Lupus region (1, 3, or 4) 9- 23 A15 --- SSTc2dJ Object name (HHMMSS.s+DDMMSS, J2000) 25- 29 F5.2 mag Rcmag Cousins R magnitude 31- 35 F5.2 mag Icmag Cousins I magnitude 37- 41 F5.2 mag zmag WFI z magnitude 43- 47 F5.2 mag Jmag 2MASS J magnitude 49- 53 F5.2 mag Hmag 2MASS H magnitude 55- 59 F5.2 mag Ksmag 2MASS Ks magnitude 61- 65 F5.2 mag 3.6mag ? IRAC 3.6um magnitude 67- 71 F5.2 mag 4.5mag ? IRAC 4.5um magnitude 73- 77 F5.2 mag 5.8mag ? IRAC 5.8um magnitude 79- 83 F5.2 mag 8.0mag ? IRAC 8.0um magnitude 85- 89 F5.2 mag 24mag ? IRAC 24um magnitude 91- 93 F3.1 mag AV Absorption in V band 95- 98 I4 K Teff Effective temperature 100-105 F6.4 solLum L Estimated luminosity 107-111 F5.3 solMass Mass ?=- Estimated stellar mass 112 A1 --- l_Age Limit flag on Age 113-116 F4.1 Myr Age ? Estimated age 119-122 A4 --- Notes Notes (1)
Note (1): Notes as follows: 1 = Weak T Taur star in Krautter et al., 1997, Cat. J/A+AS/123/329 2 = Most likely background giant 3 = X-ray source in Gondoin, 2006, Cat. J/A+A/454/595 4 = Detected at 70µm; [70]=0.62 5 = High residual fit (over 0.2mag rms)
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Note Note number 4- 80 A77 --- Text Text of the note
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Aug-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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