J/BaltA/11/1 Interstellar extinction curves of OB stars (Wegner 2002)
Atlas of interstellar extinction curves of OB stars covering the whole available
wavelength range.
Wegner W.
<Baltic Astronomy, 11, 1 (2002)>
=2002BaltA..11....1W 2002BaltA..11....1W
ADC_Keywords: Interstellar medium ; Stars, OB ; Photometry, UBVRIJKLMNH ;
Photometry, ultraviolet
Keywords: interstellar medium - ultraviolet and infrared extinction - OB stars
Abstract:
The paper presents a collection of 436 extinction curves covering the
whole available range of wavelengths from satellite UV to near-IR. The
data were taken from the ANS photometric catalogue (Cat. II/97) and
from the compilations of IR photometric measurements. The data curves
have been obtained with the aid of "artificial standards" Papaj et al.
(1993A&A...273..575P 1993A&A...273..575P) and Wegner (1994MNRAS.270..229W 1994MNRAS.270..229W, 1995,
Interstellar Absorption Structures in the Direction of Nearby OB
stars, Wyd. Uczelniane WSP, Bydgoszcz, p. 1-383). The visual
magnitudes and spectral classifications of O and B type stars with
EB-V≥0.05 were taken from the SIMBAD database. The curves are given
in the form of plots and tables Eλ-V/EB-V versus
1/λ. The observed variety of extinction laws among slightly
reddened stars is apparently due to the various physical parameters of
interstellar clouds.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 59 436 Primary data for target stars
table2.dat 77 436 Ratios of consecutive color excesses,
E(lambda-V)/E(B-V) in UBV and UV-ANS photometry
table3.dat 91 436 Ratios of consecutive color excesses,
E(lambda-V)/E(B-V) in BVRIJHKLM photometry
--------------------------------------------------------------------------------
See also:
II/97 : ANS UV Catalogue of Point Sources (Wesselius+ 1982)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name HD or BD name of the star
12- 15 F4.2 mag Vmag V magnitude
17- 21 F5.3 mag E(B-V) B-V color excess
24- 31 A8 --- SpType Standard spectral type
33- 44 A12 --- SpType2 Most recent spectral type
46- 59 A14 --- SpType3 Most often spectral type
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name HD or BD name
12- 15 F4.2 --- kU ? color excess ratio
17- 20 F4.2 --- e_kU ? rms uncertainty on kU
22- 25 F4.2 --- k33 ? k33=E(3300Å-V)/E(B-V) color excess ratio
27- 30 F4.2 --- e_k33 ? rms uncertainty on k33
32- 36 F5.2 --- k25 k25=E(2500Å-V)/E(B-V) color excess ratio
38- 42 F5.2 --- e_k25 ? rms uncertainty on k25
44- 48 F5.2 --- k22 k22=E(2200Å-V)/E(B-V) color excess ratio
50- 54 F5.2 --- e_k22 ? rms uncertainty on k22
56- 60 F5.2 --- k18 k18=E(1800Å-V)/E(B-V) color excess ratio
62- 66 F5.2 --- e_k18 rms uncertainty on k18
68- 72 F5.2 --- k15 k15=E(1550Å-V)/E(B-V) color excess ratio
74- 77 F4.2 --- e_k15 ? rms uncertainty on k15
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 ---- Name HD or BD name
12- 16 F5.2 --- kR ? KR=E(R-V)/E(B-V) colour excess ratio
18- 21 F4.2 --- e_kR ? rms uncertainty on kR
23- 27 F5.2 --- kI ? KI=E(I-V)/E(B-V) colour excess ratio
29- 32 F4.2 --- e_kI ? rms uncertainty on kI
34- 38 F5.2 --- kJ ? KJ=E(J-V)/E(B-V) colour excess ratio
40- 43 F4.2 --- e_kJ ? rms uncertainty on kJ
45- 49 F5.2 --- kH ? KH=E(H-V)/E(B-V) colour excess ratio
51- 54 F4.2 --- e_kH ? rms uncertainty on kH
56- 61 F6.2 --- kK ? KK=E(K-V)/E(B-V) colour excess ratio
63- 66 F4.2 --- e_kK ? rms uncertainty on kK
68- 73 F6.2 --- kL ? KL=E(L-V)/E(B-V) colour excess ratio
75- 79 F5.2 --- e_kL ? rms uncertainty on kL
81- 86 F6.2 --- kM ? KM=E(M-V)/E(B-V) colour excess ratio
88- 91 F4.2 --- e_kM ? rms uncertainty on kM
--------------------------------------------------------------------------------
History:
Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 10-Feb-2003