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J/A+A/613/A9        Extinction towards Galactic O stars (Maiz Apellaniz +, 2018)

Optical-NIR dust extinction towards Galactic O stars. Maiz Apellaniz J., Barba R.H. <Astron. Astrophys. 613, A9 (2018)> =2018A&A...613A...9M (SIMBAD/NED BibCode)
ADC_Keywords: Extinction ; Photometry ; Stellar distribution ; Stars, O Keywords: dust, extinction - Galaxy: structure - methods: data analysis - methods: observational - stars: early-type Abstract: O stars are excellent tracers of the intervening ISM because of their high luminosity, blue intrinsic SED, and relatively featureless spectra. We are currently conducting the Galactic O-Star Spectroscopic Survey (GOSSS), which is generating a large sample of O stars with accurate spectral types within several kpc of the Sun. We aim to obtain a global picture of the properties of dust extinction in the solar neighborhood based on optical-NIR photometry of O stars with accurate spectral types. We have processed a carefully selected photometric set with the CHORIZOS code to measure the amount [E(4405-5495)] and type [R5495] of extinction towards 562 O-type stellar systems. We have tested three different families of extinction laws and analyzed our results with the help of additional archival data. Description: File table1.dat contains the values for the amount and type of extinction for 562 Galactic O stars, as well as their corrected V magnitudes, their spectroscopic parallaxes uncorrected for binarity and a comparison between the quality of the fits using the CCM (Cardelli et al., 1989ApJ...345..245C), F99 (Fitzpatrick, 1999PASP..111...63F), and MA14 (Maiz Apellaniz et al., 2014A&A...564A..63M) families of extinction laws. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 122 562 Amount and type of extinction for the sample
See also: III/274 : Galactic O-Star Spectroscopic Survey (Sota+, 2014) V/116 : Galactic O star catalog (Maiz-apellaniz+, 2004) J/A+A/550/A107 : RV catalogue of O stars in 30 Doradus (Sana+, 2013) J/A+A/560/A29 : O-stars in VLT-FLAMES Tarantula Survey (Ramirez-Agudelo+ 2013) J/A+A/564/A39 : VFTS. OVz stars in 30 Dor (Sabin-Sanjulian+, 2014) J/A+A/564/A40 : VFTS. O-type stellar content of 30 Dor (Walborn+, 2014) J/A+A/600/A81 : VLTS. 30Dor O giants and supergiants (Ramirez-Agudelo+, 2017) J/A+A/601/A79 : VLTS. Properties of O dwarf in 30 Dor (Sabin-Sanjulian+, 2017) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 23 A23 --- Name Object name 25- 43 A19 --- ID GOSSS ID of the star or main component (GOS LLL.ll+BB.bb_NN, GOS NN in Simbad) 45 I1 --- NC Number of GOSSS components in the object 47- 51 A5 --- SS Photometric subsample of the object 53- 57 F5.3 mag colexc Measured E(4405-5495), monochromatic 59- 63 F5.3 --- u_colexc E(4405-5495) uncertainty, monochromatic 65- 69 F5.3 --- R5495 Measured R5495, monochromatic 71- 75 F5.3 --- u_R5495 R5495 uncertainty, monochromatic 77- 81 F5.3 mag extinc Measured AV, filter-integrated 83- 87 F5.3 --- u_extinc AV uncertainty, filter-integrated 89- 94 F6.3 mag V0mag Johnson V magnitude, extinction corrected 96-100 F5.3 --- u_V0mag Johnson V uncertainty, extinction corrected 102-104 F3.1 [pc] logd Spectroscopic logarithmic distance in pc 106-110 F5.2 --- chi2rCCM Reduced chi2 of the fit using CCM family (Cardelli et al., 1989ApJ...345..245C) 112-116 F5.2 --- chi2rF99 Reduced chi2 of the fit using F99 family (Fitzpatrick, 1999PASP..111...63F) 118-122 F5.2 --- chi2rMA14 Reduced chi2 of the fit using MA14 family (Maiz Apellaniz et al., 2014A&A...564A..63M)
Acknowledgements: Jesus Maiz Apellaniz, jmaiz(at)
(End) Patricia Vannier [CDS] 03-Jan-2018
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