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J/MNRAS/411/705    Spectrophotometric distances of HII regions   (Moises+, 2011)
Spectrophotometric distances to Galactic H II regions.
    Moises A.P., Damineli A., Figueredo E., Blum R.D., Conti P.S., Barbosa C.L.
   <Mon. Not. R. Astron. Soc., 411, 705-760 (2011)>
   =2011MNRAS.411..705M
ADC_Keywords: H II regions ; Stars, distances ; Photometry, infrared

Keywords: stars: formation - H II regions - Galaxy: structure


Abstract:
    We present a near-infrared study of the stellar content of 35 HII
    regions in the Galactic plane, 24 of which have been classified as
    giant H ii regions. We have selected these optically obscured
    star-forming regions from the catalogues of Russeil (2003, Cat.
    J/A+A/397/133), Conti & Crowther (2004MNRAS.355..899C) and Bica et al.
    (2003, Cat. J/A+A/404/223). In this paper, we have used the
    near-infrared domain J-, H- and Ks-band colour images to visually
    inspect the sample. Also, we have used colour-colour and
    colour-magnitude diagrams to indicate ionizing star candidates, as
    well as the presence of young stellar objects such as classical
    T Tauri stars and massive young stellar objects (MYSOs). We have
    obtained Spitzer Infrared Array Camera images for each region to help
    further characterize them. Spitzer and near-infrared morphology were
    used to place each cluster in an evolutionary phase of development.
    Spitzer photometry was also used to classify the MYSOs.

Description:
    The J-band (λ1.28um, δλ=0.3um), H-band (λ1.63um,
    δλ=0.3um) and Ks-band (λ2.19um, δλ=0.4um)
    images were obtained on the nights of 1999 May 1, 4 and 20, 2000 May
    19 and 21 and 2001 July 10 and 12, at the Cerro Tololo Inter-American
    Observatory (CTIO) 4-m Blanco telescope, using the facility's infrared
    imager OSIRIS, which has a field of view (FOV) of 93x93arcsec2 and a
    pixel scale of 0.161arcsec/pixel. On the nights of 2005 Jult 3-6 and
    11 and 2006 June 3-7, we obtained images using the facility's infrared
    imager ISPI (with a FOV of 10.25x10.25arcmin2 and a pixel scale of
    0.3arcsec/pix), also at the 4-m Blanco telescope. Also, on the nights
    of 1998 August 28 and 29, we obtained images on the CTIO 4-m telescope
    using the facility's infrared imager CIRIM (with a FOV of
    102x102arcsec2 and a pixel scale of 0.40arcsec/pix).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        93       65   Massive YSOs identified using the color-color
                              and color-magnitude diagrams and with a
                              counterpart in their respective Spitzer images
table3.dat        48       19   Regions with distances derived from the
                              trigonometric parallax
table4.dat        63       27   Spectrophotometric distances


See also:
    J/A+A/397/133 : Star-forming complexes in the Galaxy (Russeil+, 2003)
    J/A+A/404/223 : 2MASS IR star clusters in the Galaxy (Bica+, 2003)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

   1- 10  A10   ---    [MDF2011]  Region designation, GLLL.ll+B.bb
      11  A1    ---  r_[MDF2011]  [abcde] Reference for the region (1)
  13- 22  A10   ---     Name      Other name of the region, or [MDF2011]
  23- 26  I4    ---     Cand      Candidate number,
                                   [MDF2011] GLLL.ll+B.bb NNNN in Simbad
  28- 29  I2    h       RAh       Right ascension (J2000)
  31- 32  I2    min     RAm       Right ascension (J2000)
  34- 38  F5.2  s       RAs       Right ascension (J2000)
      40  A1    ---     DE-       Declination sign (J2000)
  41- 42  I2    deg     DEd       Declination (J2000)
  44- 45  I2    arcmin  DEm       Declination (J2000)
  47- 51  F5.2  arcsec  DEs       Declination (J2000)
  53- 57  F5.2  mag     Ksmag     MYSO Ks-band magnitude
  59- 63  F5.2  mag     [3.6]     ? IRAC 3.6um magnitude
      65  I1    ---     n_[3.6]   [1/3]? reason of non-detection in [3.6] (2)
  67- 71  F5.2  mag     [4.5]     ? IRAC 4.5um magnitude
      73  I1    ---     n_[4.5]   [1/3]? reason of non-detection in [4.5] (2)
  75- 79  F5.2  mag     [5.8]     ? IRAC 5.8um magnitude
      81  I1    ---     n_[5.8]   [1/3]? reason of non-detection in [5.8] (2)
  83- 86  F4.2  mag     [8.0]     ? IRAC 8.0um magnitude
      88  I1    ---     n_[8.0]   [1/4]? reason of non-detection in [8.0] (2)
  90- 93  A4    ---     Class     Classificiation of the MYSO, when possible

Note (1): References as follows:
   a = Blum et al. (2001AJ....121.3149B)
   b = Blum et al. (2000AJ....119.1860B
   c = Blum et al. (1999AJ....117.1392B)
   d = Figueredo et al. (2008AJ....136..221F)
   e = Figueredo et al. (2005AJ....129.1523F)
Note (2): Identification of non-detected objects code as follows:
   1 = undetected object
   2 = saturated object
   3 = strong nebulosity obscurating the object
   4 = crowded cluster


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label   Explanations

   1-  6  F6.2  deg     GLON    Galactic longitude
   8- 13  F6.2  deg     GLAT    Galactic latitude
  15- 24  A10   ---     Name    Name of the HII region
  27- 30  F4.2  kpc     Dkin    Kinematic distance (1)
  32- 35  F4.2  kpc     Dplx    Distance derived from the trigonometric parallax
  37- 40  F4.2  kpc     E_Dplx  Error on Dplx (upper value)
  42- 45  F4.2  kpc     e_Dplx  Error on Dplx (lower value)
  47- 48  I2    ---     r_Dplx  References for Dplx (2)

Note (1): Kinematic distance from From Reid et al. (2009ApJ...700..137R)

Note (2): References for the adopted distance moduli as follows:
   1 = Reid et al. (2009ApJ...693..397R)
   2 = Moscadelli et al. (2009ApJ...693..406M)
   3 = Xu et al. (2009ApJ...693..413X)
   4 = Zhang et al. (2009ApJ...693..419Z)
   5 = Brunthaler et al. (2009ApJ...693..424B)
   6 = Bartkiewicz et al. (2008A&A...490..787B)
   7 = Moellenbrock, Claussen & Goss (2009ApJ...694..192M)
   8 = Sato et al. (2008PASJ...60..975S)
   9 = Xu et al. (2006Sci...311...54X),
       Hachisuka et al. (2006ApJ...645..337H)
  10 = Hachisuka et al. (2009ApJ...696.1981H)
  11 = Honma et al. (2007PASJ...59..889H)
  12 = Hirota et al. (2007PASJ...59..897H),
       Menten et al. (2007A&A...474..515M)
  13 = Choi et al. (2008PASJ...60.1007C)
  14 = Reid et al. (2009ApJ...705.1548R)


Byte-by-byte Description of file: table4.dat

   Bytes Format Units   Label     Explanations

   1-  5  F5.1  deg     GLON      Galactic longitude
   7- 10  F4.1  deg     GLAT      Galactic latitude
  12- 21  A10   ---     Name      Name of the HII region
      23  I1    ---     r_Dist    Reference for adopted distance moduli (1)
      25  I1    ---     Nstar     Number of stars used in each region
  27- 31  F5.2  kpc     Dkin      Kinematic distance (2)
  33- 35  F3.1  kpc     e_Dkin    rms uncertainty on Dkin
  37- 41  F5.2  kpc     DM        Spectrophotometric distance using the Mathis
                                   (1990ARA&A..28...37M) interstellar
                                   extinction law
  43- 46  F4.2  kpc     e_DM      rms uncertainty on DM
  48- 52  F5.2  kpc     DS        Spectrophotometric distance using the
                                   Stead & Hoare (2009MNRAS.400..731S)
                                   interstellar extinction law
  54- 57  F4.2  kpc     e_DS      rms uncertainty on DS
  59- 63  F5.2  kpc     <Dspec>   Average of both spectrophotometric distances

Note (1): References for the adopted distance moduli as follows:
   1 = Bik et al. (2005A&A...440..121B)
   2 = Blum et al. (2001AJ....121.3149B)
   3 = Hanson et al. (1996, Cat. J/ApJS/107/281)
   4 = Blum et al. (2000AJ....119.1860B)
   5 = Blum et al. (1999AJ....117.1392B)
   6 = Figueredo et al. (2008AJ....136..221F)
   7 = Navarete et al. (in preparation)
   8 = Figueredo et al. (2005AJ....129.1523F)
Note (2): All kinematic distances are from Russeil (2003, Cat. J/A+A/397/133)
     except for W31-South and W31-North with distances from
     Corbel & Eikenberry (2004A&A...419..191C).


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    09-Dec-2011