J/A+A/550/A108 DIB in VLT-FLAMES Tarantula Survey (van Loon+, 2013)
The VLT-FLAMES Tarantula Survey.
IX. The interstellar medium seen through Diffuse Interstellar Bands and
neutral sodium.
van Loon J.T., Bailey M., Tatton B.L., Maiz Apellaniz J., Crowther P.A.,
de Koter A., Evans C.J., Henault-Brunet V., Howarth I.D., Richter P.,
Sana H., Simon-Diaz S., Taylor W., Walborn N.R.
<Astron. Astrophys. 550, A108 (2013)>
=2013A&A...550A.108V 2013A&A...550A.108V
ADC_Keywords: Magellanic Clouds ; Interstellar medium ; Equivalent widths ;
Spectroscopy
Keywords: ISM: individual objects: Tarantula Nebula (30 Doradus Nebula) -
ISM: kinematics and dynamics - ISM: molecules -
ISM: lines and bands - ISM: structure - local interstellar matter
Abstract:
The Tarantula Nebula (a.k.a. 30 Dor) is a spectacular star-forming
region in the Large Magellanic Cloud (LMC), seen through gas in the
Galactic disc and halo. Diffuse interstellar bands (DIBs) offer a
unique probe of the diffuse, cool-warm gas in these regions.
The aim is to use DIBs as diagnostics of the local interstellar
conditions, whilst at the same time deriving properties of the
yet-unknown carriers of these enigmatic spectral features.
Spectra of over 800 early-type stars from the Very Large Telescope
Flames Tarantula Survey (VFTS) were analysed. Maps were created,
separately, for the Galactic and LMC absorption in the DIBs at 4428
and 6614Å and - in a smaller region near the central cluster
R 136 - neutral sodium (the NaI D doublet); we also measured
the DIBs at 5780 and 5797Å.
Description:
Equivalent widths of the 4428, 5780, 5797 and 6614 Diffuse
Interstellar Bands (DIBs) were measured for up to 800 OB-type stars in
the Tarantula Nebula (30 Doradus, containing the massive compact star
cluster R136) in the Large Magellanic Cloud (LMC). The Galactic
foreground and LMC components were fitted simultaneously, with
Lorentzians for the 4428 DIB and Gaussians for the other DIBs. All
fits were inspected by eye, and a flag was reset to zero if the fit
was rejected.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea2.dat 74 800 Equivalent widths of the Galactic and LMC components
of the 4428 and 6614Å Diffuse Interstellar Bands,
obtained with the Medusa mode of VLT-VFLAMES
tablea3.dat 39 42 Equivalent widths of the Galactic and LMC components
of the 4428Å Diffuse Interstellar Band, obtained
with the ARGUS mode of VLT-FLAMES
tablea4.dat 109 25 Equivalent widths of the Galactic and LMC components
of the 4428, 5780 and 5797Å Diffuse Interstellar
Bands, obtained with the UVES mode of VLT-FLAMES
--------------------------------------------------------------------------------
See also:
II/149 : Diffuse Interstellar Band Measurements (Snow+ 1977)
II/135 : Diffuse Interstellar Band Measurements Suppl. (Guarinos 1988)
III/148 : Interstellar lines catalogue (Garcia 1991)
J/A+A/429/559 : Diffuse Interstellar Bands in NGC 1448 (Sollerman+, 2005)
J/A+A/544/A136 : Diffuse Interstellar Bands in 150 HD (Raimond+, 2012)
J/ApJ/705/32 : Diffuse interstellar bands from HD 183143 (Hobbs+, 2009)
J/ApJ/708/1628 : Diffuse interstellar bands. IV. (McCall+, 2010)
J/ApJ/733/91 : Diffuse interstellar band equivalent widths (Xiang+, 2011)
J/MNRAS/358/563 : Diffuse Interstellar Bands in 49 stars (Megier+, 2005)
J/A+A/530/A108 : VLT-FLAMES Tarantula Survey (Evans+, 2011)
J/A+A/550/A107 : RV catalogue of O stars in 30 Doradus (Sana+, 2013)
J/A+A/550/A109 : vsini in VLT-FLAMES Tarantula Survey (Dufton+, 2013)
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- VFTS [1/892] VFTS star catalogue entry
6- 10 F5.3 0.1nm W(4428)G Equivalent width of 4428Å DIB in Galaxy
12- 16 F5.3 0.1nm e_W(4428)G 1-σ error in W(4428)G
18 I1 --- f_W(4428)G [0/1] Flag on W(4428G): 0=rejected, 1=accepted
20- 24 F5.3 0.1nm W(4428)L Equivalent width of 4428Å DIB in LMC
26- 30 F5.3 0.1nm e_W(4428)L 1-σ error in W(4428)L
32 I1 --- f_W(4428)L [0/1] Flag on W(4428L): 0=rejected, 1=accepted
34- 39 F6.4 0.1nm rms4428 rms noise around the 4428Å DIB
41- 45 F5.3 0.1nm W(6614)G Equivalent width of 6614Å DIB in Galaxy
47- 51 F5.3 0.1nm e_W(6614)G 1-σ error in W(6614)G
53 I1 --- f_W(6614)G [0/1] Flag on W(6614G): 0=rejected, 1=accepted
55- 59 F5.3 0.1nm W(6614)L Equivalent width of 6614Å DIB in LMC
61- 65 F5.3 0.1nm e_W(6614)L 1-σ error in W(6614)L
67 I1 --- f_W(6614)L [0/1] Flag on W(6614L): 0=rejected, 1=accepted
69- 74 F6.4 0.1nm rms6614 rms noise around the 6614Å DIB
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- VFTS [0/1037] VFTS star catalogue entry
(0 = R136 core)
6- 10 F5.3 0.1nm W(4428)G Equivalent width of 4428Å DIB in Galaxy
12- 16 F5.3 0.1nm e_W(4428)G 1-σ error in W(4428)G
18 I1 --- f_W(4428)G [0/1] Flag on W(4428G): 0=rejected, 1=accepted
20- 24 F5.3 0.1nm W(4428)L Equivalent width of 4428Å DIB in LMC
26- 30 F5.3 0.1nm e_W(4428)L 1-σ error in W(4428)L
32 I1 --- f_W(4428)L [0/1] Flag on W(4428L): 0=rejected, 1=accepted
34- 39 F6.4 0.1nm rms4428 rms noise around the 4428Å DIB
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- VFTS [416/656] VFTS star catalogue entry
6- 10 F5.3 0.1nm W(4428)G Equivalent width of 4428Å DIB in Galaxy
12- 16 F5.3 0.1nm e_W(4428)G 1-σ error in W(4428)G
18 I1 --- f_W(4428)G [0/1] Flag on W(4428G): 0=rejected, 1=accepted
20- 24 F5.3 0.1nm W(4428)L Equivalent width of 4428Å DIB in LMC
26- 30 F5.3 0.1nm e_W(4428)L 1-σ error in W(4428)L
32 I1 --- f_W(4428)L [0/1] Flag on W(4428L): 0=rejected, 1=accepted
34- 39 F6.4 0.1nm rms4428 rms noise around the 4428Å DIB
41- 45 F5.3 0.1nm W(5780)G Equivalent width of 5780Å DIB in Galaxy
47- 51 F5.3 0.1nm e_W(5780)G 1-σ error in W(5780)G
53 I1 --- f_W(5780)G [0/1] Flag on W(5780G): 0=rejected, 1=accepted
55- 59 F5.3 0.1nm W(5780)L Equivalent width of 5780Å DIB in LMC
61- 65 F5.3 0.1nm e_W(5780)L 1-σ error in W(5780)L
67 I1 --- f_W(5780)L [0/1] Flag on W(5780L): 0=rejected, 1=accepted
69- 74 F6.4 0.1nm rms5780 rms noise around the 5780Å DIB
76- 80 F5.3 0.1nm W(5797)G Equivalent width of 5797Å DIB in Galaxy
82- 86 F5.3 0.1nm e_W(5797)G 1-σ error in W(5797)G
88 I1 --- f_W(5797)G [0/1] Flag on W(5797G): 0=rejected, 1=accepted
90- 94 F5.3 0.1nm W(5797)L Equivalent width of 5797Å DIB in LMC
96-100 F5.3 0.1nm e_W(5797)L 1-σ error in W(5797)L
102 I1 --- f_W(5797)L [0/1] Flag on W(5797L): 0=rejected, 1=accepted
104-109 F6.4 0.1nm rms5797 rms noise around the 5797Å DIB
--------------------------------------------------------------------------------
Acknowledgements:
Jacco Th. van Loon, j.t.van.loon(at)keele.ac.uk
References:
Evans et al., Paper I 2011A&A...530A.108E 2011A&A...530A.108E, Cat. J/A+A/530/A108
Taylor et al., Paper II 2011A&A...530L..10T 2011A&A...530L..10T
Bestenlehner et al., Paper III 2011A&A...530L..14B 2011A&A...530L..14B
Bressert et al., Paper IV 2012A&A...542A..49B 2012A&A...542A..49B
Dunstall et al., Paper V 2012A&A...542A..50D 2012A&A...542A..50D
Henault-Brunet et al., Paper VI 2012A&A...545L...1H 2012A&A...545L...1H
Henault-Brunet et al., Paper VII 2012A&A...546A..73H 2012A&A...546A..73H
Sana et al., Paper VIII 2013A&A...550A.107S 2013A&A...550A.107S, Cat. J/A+A/550/A107
Dufton et al., Paper X 2012A&A...550A.109D 2012A&A...550A.109D, Cat. J/A+A/550/A109
(End) Jacco Th. van Loon [Keele Univ., UK], Patricia Vannier [CDS] 04-Dec-2012