Access to Astronomical Catalogues

← Click to display the menu
J/MNRAS/411/1597  LMC point source classification in SAGE-Spec   (Woods+, 2011)

The SAGE-Spec Spitzer Legacy programme: the life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification I. Woods P.M., Oliveira J.M., Kemper F., van Loon J.T., Sargent B.A., Matsuura M., Szczerba R., Volk K., Zijlstra A.A., Sloan G.C., Lagadec E., McDonald I., Jones O., Gorjian V., Kraemer K.E., Gielen C., Meixner M., Blum R.D., Sewilo M., Riebel D., Shiao B., Chen C.-H.R., Boyer M.L., Indebetouw R., Antoniou V., Bernard J.-P., Cohen M., Dijkstra C., Galametz M., Galliano F., Gordon K.D., Harris J., Hony S., Hora J.L., Kawamura A., Lawton B., Leisenring J.M., Madden S., Marengo M., McGuire C., Mulia A.J., O'Halloran B., Olsen K., Paladini R., Paradis D., Reach W.T., Rubin D., Sandstrom K., Soszynski I., Speck A.K., Srinivasan S., Tielens A.G.G.M., van Aarle E., van Dyk S.D., Van Winckel H., Vijh U.P., Whitney B., Wilkins A.N. <Mon. Not. R. Astron. Soc., 411, 1597-1627 (2011)> =2011MNRAS.411.1597W
ADC_Keywords: Magellanic Clouds ; Surveys ; Cross identifications Keywords: techniques: spectroscopic - surveys - galaxies: individual: LMC - Magellanic Clouds - infrared: galaxies - infrared: stars Abstract: We present the classification of 197 point sources observed with the Infrared Spectrograph in the SAGE-Spec Legacy programme on the Spitzer Space Telescope. We introduce a decision-tree method of object classification based on infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership and variability information, which is used to classify the SAGE-Spec sample of point sources. The decision tree has a broad application to mid-infrared spectroscopic surveys, where supporting photometry and variability information are available. We use these classifications to make deductions about the stellar populations of the Large Magellanic Cloud and the success of photometric classification methods. We find 90 asymptotic giant branch (AGB) stars, 29 young stellar objects, 23 post-AGB objects, 19 red supergiants, eight stellar photospheres, seven background galaxies, seven planetary nebulae, two HII regions and 12 other objects, seven of which remain unclassified. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 133 197 Classification of point sources targeted in IRS staring mode as part of the SAGE-Spec program
See also: II/247 : Variable Stars in the Large Magellanic Clouds (MACHO, 2001) J/AJ/132/2268 : SAGE calibration stars (Meixner+, 2006) J/AJ/136/1242 : LMC long-period variables from MACHO (Fraser+, 2008) J/AcA/58/293 : Type-II and anomalous Cepheids in LMC (Soszynski+, 2008) J/AcA/59/239 : VI light curves of LMC long-period variables (Soszynski+, 2009) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- SSID [1/197] Sequential number 5- 29 A25 --- Name Name (1) 31- 32 I2 h RAh Observed right ascension (J2000) 34- 35 I2 min RAm Observed right ascension (J2000) 37- 41 F5.2 s RAs Observed right ascension (J2000) 43 A1 --- DE- Observed declination sign (J2000) 44- 45 I2 deg DEd Observed declination (J2000) 47- 48 I2 arcmin DEm Observed declination (J2000) 50- 54 F5.2 arcsec DEs Observed declination (J2000) 56- 77 A22 --- SSTISAGE SSTISAGE designation (2) 79- 91 A13 --- MACHO MACHO designation (Cat. II/247) 93- 96 I4 d Per ? MACHO period or lower value of period interval (3) 97 A1 --- --- [-] 98-101 I4 d Per2 ? Upper value of MACHO period interval (3) 102 A1 --- u_Per [u] for period undefined in MACHO 104-113 A10 --- OGLE OLGE designation 115-117 I3 d PerO ? OGLE period (4) 119-133 A15 --- Class Classification of the object (5)
Note (1): We employ commonly-used abbreviations, e.g., * RP for [RP2006] (Reid & Parker, 2006, Cat. J/MNRAS/373/521), * KDM for [KDM2001] (Kontizas et al., 2001, cat. J/A+A/369/932) Note (2): SAGE-LMC identifier (Meixner et al., 2006, Cat. J/AJ/132/2268) Note (3): Periods are taken from Alcock et al. (1998AJ....115.1921A) and Fraser et al. (2005AJ....129..768F, 2008, Cat. J/AJ/136/1242). Note (4): Periods are taken from the online OGLE-III catalog, as of 2009 October 21 (Soszy'nski et al. 2008, Cat. J/AcA/58/293; 2009, Cat. J/AcA/59/239) Note (5): the classes are defined as follows: YSO-1 = Young stellar object with ices YSO-2 = Young stellar object with silicate absorption YSO-3 = Young stellar object with PAH emission YSO-4 = Young stellar object with silicate emission STAR = Stellar photosphere C-AGB = C-rich AGB star O-AGB = O-rich AGB star RSG = Red supergiant C-PAGB = C-rich post-AGB star O-PAGB = O-rich post-AGB star C-PN = C-rich planetary nebula O-PN = O-rich planetary nebula HII = HII region GAL = Galaxy OTHER = Object of known type UNK = Object of unknown type
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 02-Sep-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

catalogue service

© Unistra/CNRS