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J/ApJ/414/279              Faintest stars                         (Tinney, 1993)

The faintest stars: the luminosity and mass functions at the bottom of the main sequence. TINNEY C.G. <Astrophys. J. 414, 279 (1993)> =1993ApJ...414..279T (SIMBAD/NED Reference)
ADC_Keywords: Plate data; Surveys; Magnitudes; Colors Keywords: stars: formation - stars: low-mass, brown dwarfs - stars: luminosity function, mass function - techniques: photometric Description: We present infrared K-band photometry of complete samples of VLM candidates constructed from IIIaF and IVN plates in 10 fields taken as part of the POSSII and UKSRC surveys. Using the I-K colors constructed for these stars we estimate a bolometric luminosity function which extends to MBol=13.75. We find significant evidence for a luminosity function decreasing toward these luminosities. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 83 17 Areas and limits surveyed table2 99 406 Survey samples in each POSSII/UKSRC field selected by photographic color table3 99 34 Miscellaneous interesting objects (I-K>3.0) not part of survey sample
Byte-by-byte Description of file: table1
Bytes Format Units Label Explanations
1 A1 --- NField Field identification letter 3- 7 A5 --- Name Field designation 10- 11 I2 h RAh Field right ascension 1950 13- 14 I2 min RAm Field right ascension 1950 16- 17 I2 deg DEd Field declination 1950 19- 24 A6 --- Master Master plate 25 A1 --- n_Master Note on Master (1) 27- 56 A30 --- Slaves Slave plates 60- 64 F5.2 deg+2 Area Area in which IIIaF and IVN plates are coincident 67- 70 F4.1 mag Imin Lower limit of I magnitude interval 72- 75 F4.1 mag Imax Upper limit of I magnitude interval 77- 80 F4.2 mag R-Imax Upper limit of R-I color 83 A1 --- Limits A 'y' means that the sample includes upper limits, constructed from pairs IVN plates and IIIaF non-detections
Note (1): Objects were selected from the areas of I11499 which does not overlap with N3601 (the plate used to select the Fld 832-1 sample)
Byte-by-byte Description of file: table2 table3
Bytes Format Units Label Explanations
1 A1 --- NField Field designation as in table1 3- 12 A10 --- Name Object name 13 A1 --- n_Name [bd] Note on Name (1) 15- 16 I2 h RAh Right ascension 1950.0 18- 19 I2 min RAm Right ascension 1950.0 21- 24 F4.1 s RAs Right ascension 1950.0 26 A1 --- DE- Declination sign 27- 28 I2 deg DEd Declination 1950.0 30- 31 I2 arcmin DEm Declination 1950.0 33- 34 I2 arcsec DEs Declination 1950.0 37- 41 F5.2 mag Iphot []? I magnitude from photographic observations on the Palomar 60" telescope 44- 47 F4.2 mag (R-I)Phot []? (R-I) color from photographic observations on the Palomar 60" telescope 48 A1 --- q_(R-I)Phot A 'l' indicates upper limit object, object detected above (IPhot)lim, but not detected on a IIIaF plate 50- 54 F5.2 mag Iccd []? I magnitude from CCD camera on the Palomar 60" telescope 57- 60 F4.2 mag (R-I)ccd []? (R-I) color from CCD camera on the Palomar 60" telescope 63- 67 F5.2 mag Kcam []? K magnitude measured at Las Campanas 68- 69 A2 --- q_Kcam [abcen: ] Note on Kcam (2) 71- 75 F5.2 mag Kpal []? K magnitude measured at Palomar 76 A1 --- q_Kpal [abcn:] Note on Kpal (2) 79- 83 F5.2 mag Kirtf []? K magnitude measured at Nasa Infrared Telescope Facility (IRTF) 84- 85 A2 --- q_Kirtf [abcen: ] Note on Kirtf (2) 87- 91 F5.2 mag Kmn []? Mean K magnitude 92 A1 --- q_Kmn [abc:] Note on Kmn (2) 94- 98 F5.2 mag I-K []? I-K color (calculated using ICDD when available, and otherwise using IPhot) 99 A1 --- q_I-K [c] When 'c', this object shows possible evidence of variability
Note (1): d: the following pairs of objects lie in the overlap regions between two plates and were assigned duplicate names; - in table2: 213-16596 = 263-68812; 213-19088 = 263-72846; 831-161058 = 832-3494; 831-165166 = 832-7464; 890-4633 = 891-137643. - in table3: 263-78128 = 262-3688 b: in table3, 513-42404 was discovered as an infrared companion to the star TVLM 513-4240 Note (2): a: Photometry good to ±0.05mag b: Photometry good to ±0.10mag c: Photometry only good to ± 0.25mag ':': Object barely detected and the photometry is only good to ±0.5mag e: Preliminary photometry from an IRTF run on 1992 October 23-26 n: not detected
History: keypunched at CDS
(End) Marie-Jose Wagner, Patricia Bauer [CDS] 24-Oct-1994
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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