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J/A+AS/117/227      Dwarf effective temperatures (Alonso+ 1996)
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Determination of effective temperatures for an extended sample of dwarfs and
subdwarfs (F0-K5).
      Alonso A., Arribas S., Martinez-Roger C.
     <Astron. Astrophys. Suppl. Ser. 117, 227 (1996)>
     =1996A&AS..117..227A      (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, subdwarf ; Effective temperatures ; Photometry, infrared
Keywords: stars: fundamental parameters - stars: Population II -
          stars: subdwarfs - stars: general

Description:
    We  have applied the  InfraRed Flux Method  (IRFM) to a  sample of 475
    dwarfs and  subdwarfs in order to  derive their effective temperatures
    with  a mean accuracy of about 1.5%.  We have used the new homogeneous
    grid  of theoretical model atmosphere  flux distributions developed by
    Kurucz  (1991, 1993) for the application  of the IRFM. The atmospheric
    parameters of the stars cover, roughly, the ranges:
    3500K<=T_eff_<=8000K; -3.5<=[Fe/H]<=+0.5; 3.5<=log(g)<=5. 
    The monochromatic infrared fluxes at the continuum, and the bolometric
    fluxes  are derived using  recent results, which  satisfy the accuracy
    requirements of the work.

File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
table4.dat     134        462    Effective temperatures
table4a.tex    312        457    LaTeX version of table4, part 1
table4b.tex    167        285    LaTeX version of table4, part 2
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See also:
    J/A+AS/107/365 : Dwarfs and subdwarfs IR photometry (Alonso+, 1994)
    J/A+AS/131/209 : Giants JHK(L') photometry (Alonso+ 1998)

Byte-by-byte Description of file: table4.dat
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   Bytes Format  Units     Label     Explanations
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   1- 12  A12    ---       ID        Identification (1)
      14  A1     ---     n_ID        Note on ID (2)
  17- 20  F4.2   cm/s2     logg      Surface gravity
  22- 26  F5.2   ---       [Fe/H]    Metallicity
  28- 36  E9.3 10-2mW/m2   FBol      Bolometric flux
  38- 41  F4.2   mag       E(B-V)    Interestellar redenning
  43- 51  E9.3 10-2mW/m2   FJ        ? Monochromatic flux in the band J
  53- 57  F5.3   ---       qJ        ? q-factor in the band J
      59  A1     ---     l_TJ        limit flag on TJ
  60- 63  I4     K         TJ        ? Temperature derived in the band J
      64  A1     ---     n_TJ        [])] Note on TJ (3)
  66- 68  I3     K       e_TJ        ? rms uncertainty on TJ (4)
  70- 78  E9.3 10-2mW/m2   FH        ? Monochromatic flux in the band H
  80- 84  F5.3   ---       qH        ? q-factor in the band H
      86  A1     ---     l_TH        Limit flag on TH
  87- 90  I4     K         TH        ? Temperature derived in the band H
      91  A1     ---     n_TH        []] Note on TH (3)
  93- 95  I3     K       e_TH        ? rms uncertainty on TH (4)
  97-105  E9.3 10-2mW/m2   FK        ? Monochromatic flux in the band K
 107-111  F5.3   ---       qK        ?  q-factor in the band K
 114-117  I4     K         TK        ? Temperature derived in the band K
 119-121  I3     K       e_TK        ? rms uncertainty on TK (4)
 125-128  I4     K         Tmean     ? Weighted mean temperature derived from
                                        TJ, TH and TK
     129  A1     ---     n_Tmean     [)] Note on Tmean (3)
 131-133  I3     K       e_Tmean     ? rms uncertainty on Tmean (5)
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Note (1): Giclas number has been preferred  when available. HD, BD, HR and GJ
           numbers were used otherwise. The stars are ordered in right ascension
Note (2): 1: SB501: Wrong FJ, (J=11.22).
          2: G036-050: The error in FJ is greater than 10%, hence no TJ is
              provided.
          3: G178-030: Very faint star, J=11.63, H=11.31 and K=11.127.
          4: G167-011: The error in FJ is greater than 20%. The faintest star
              of the sample (J=12.99).
          5: HR6228: Wrong FJ.
          6: G017-037: Very faint star, J=11.706, H=11.300 and K=11.297.
          7: G021-006: Wrong FJ, (J=10.38).
          8: G126-063: Faint star, J=10.69, H=10.64 and K=10.59.
          9: G217-008: Wrong FJ.
Note (3): A bracket indicates that the temperature has not been considered
           in the mean as explained in Sect. 5.
          A parentheses indicates temperatures under 4000 K. In this case
           there isn't estimation of the total error because of the
           uncertainties of the model fluxes in this range.
Note (4): Error computed considering errors in FBol, FJ, logg and [Fe/H].
Note (5): Mean error computed considering linear transmission of errors from
           e_TJ, e_TH and e_TK.
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Courtesy: Angel Alonso <aas@ll.iac.es>
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(End)                                         Patricia Bauer [CDS]   18-Jan-1996