J/A+A/314/896 IR fluxes and photometry of oxygen-rich stars (Le Sidaner+ 1996)
Optical and infrared observations of 27 oxygen-rich stars. Modelling of the
circumstellar dust shells.
Le Sidaner P., Le Bertre T.
<Astron. Astrophys. 314, 896 (1996)>
=1996A&A...314..896L 1996A&A...314..896L (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Photometry, UBVRI
Keywords: radiative transfer - stars: circumstellar matter -
stars: mass loss - stars: AGB and post-AGB - infrared: stars -
radio continuum: stars
Abstract:
We present mid-infrared (10-20µm) photometry obtained on 27
variable oxygen-rich late-type stars, at different epochs during the
period 1984-1990. The sample includes representative objects of Miras
with optical counterparts, as well as type II OH/IR sources; there are
also at least 2 supergiants. These measurements are merged with
near-infrared ones, already reported and obtained
quasi-simultaneously, to derive 72 (1-20µm) broad band energy
distributions. These results are complemented also with IRAS data and
flux measurements obtained in the sub-millimeter range. The resulting
spectra are interpreted in terms of a circumstellar dust shell
radiative transfer model applied for each object at different phases
of their lightcurves. The modelling appears to be consistent for a
large variety of oxygen-rich sources with optical depth at 10µm
ranging from ∼0.01 to 10. The temperature of formation of the grains
is taken to range from 800 to 950K depending on the pressure at the
site of dust formation (P∼10-7-10-4dyn.cm-2). Physical
parameters such as inner radius of the circumstellar dust shell,
bolometric luminosity and mass-loss rate are evaluated. For the
objects in the sample, the mass-loss rate ranges from 2x10-8 to
10-4M☉/yr. In the context of the planned and underway
near-infrared surveys we discuss the relations between color indices
and optical depth for oxygen-rich sources. Circumstellar shell optical
depths and mass-loss rates are shown to be correlated to the
[K-12µm] color. Unfortunately, near-infrared data alone seem to be
insufficient to determine physical parameters reliably.
For a description of the UBVRI photometric systems, see e.g. GCPD/08
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 114 27 Spectral types and molecular data
table1.tex 85 128 LaTeX version of table1
table2a 62 72 10-20 microns photometric data
table2a.tex 76 134 LaTeX version of table2a
table2b 56 5 0.36-0.80 microns photometric data
table2b.tex 64 37 LaTeX version of table2b
table3 75 6 Sub-millimeter continuum fluxes
table3.tex 79 47 LaTeX version of table3
table6 118 6 Comparison of IRAS fluxes and model predictions
table6.tex 83 93 LaTeX version of table6
table7 191 6 Comparison of 400, 800, 1100 and 1300 micron
observed fluxes and model predictions
table7.tex 85 132 LaTeX version of table7
table8 37 32 Optical parameters of "dirty silicate" grains
adapted from Jones & Merrill
(1976ApJ...209..509J 1976ApJ...209..509J)
table8.tex 78 59 LaTeX version of table8
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Star name
21- 30 A10 --- IRAS IRAS name
33- 36 I4 K T IRAS color temperature
39- 54 A16 --- Sp Spectral type (the reference number is in ()) (1)
57- 61 F5.1 km/s VSiO ? SiO velocity
62- 63 A2 --- n_VSiO ? Note (2)
65- 66 I2 --- r_VSiO Reference (1)
68- 72 F5.1 km/s VH2O ? H2O central velocity
73- 74 A2 --- n_VH2O Note (2)
76- 77 I2 --- r_VH2O ? Reference (1)
80- 84 F5.1 km/s VOH ? OH central velocity
85- 86 A2 --- n_VOH Note (2)
88- 89 I2 --- r_VOH ? Reference (1)
92- 95 F4.1 km/s VexpOH ? OH expansion velocity
97-102 F6.1 km/s VCO ? CO central velocity
103-104 A2 --- n_VCO Note (2)
106-107 I2 --- r_VCO ? Reference (1)
111-114 F4.1 km/s VexpCO ? CO expansion velocity
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Note (1): (1) Whitelock et al. (1994MNRAS.267..711W 1994MNRAS.267..711W)
(2) Caswell et al. (1981AuJPh..34..333C 1981AuJPh..34..333C)
(3) Haikala (1990A&AS...85..875H 1990A&AS...85..875H)
(4) Le Bertre (1993A&AS...97..729L 1993A&AS...97..729L)
(5) Comoreto et al. (1990A&AS...84..179C 1990A&AS...84..179C)
(6) Alcolea & Bujarrabal (1992A&A...253..475A 1992A&A...253..475A)
(7) Wilson & Barrett (1972A&A....17..385W 1972A&A....17..385W)
(8) Nyman et al. (1992A&AS...93..121N 1992A&AS...93..121N)
(9) average of Colomer et al. (1992A&A...254L..17C 1992A&A...254L..17C)
(10) Bowers et al. (1993AJ....105..284B 1993AJ....105..284B)
(11) Bowers et al. (1989ApJ...340..479B 1989ApJ...340..479B)
(12) Bujarrabal et al. (1989A&A...219..256B 1989A&A...219..256B)
(13) Le Bertre & Nyman (1990A&A...233..477L 1990A&A...233..477L)
(14) Sivagnanam et al. (1989A&A...211..341S 1989A&A...211..341S)
(15) Engels (1979A&AS...36..337E 1979A&AS...36..337E)
(16) Deguchi et al. (1989MNRAS.239..825D 1989MNRAS.239..825D)
(17) te Lintel Hekkert et al. (1991A&AS...90..327T 1991A&AS...90..327T)
(18) Nyman et al. (1993A&A...280..551N 1993A&A...280..551N)
(19) Allen et al. (1977ApJ...217..108A 1977ApJ...217..108A)
(20) Spencer et al. (1977AJ.....82..706S 1977AJ.....82..706S)
(21) Lewis & Engels (1988Natur.332...49L 1988Natur.332...49L)
(22) Eder et al. (1988ApJS...66..183E 1988ApJS...66..183E)
(23) Jewell et al. (1991A&A...242..211J 1991A&A...242..211J)
(24) Heske et al. (1990A&A...239..173H 1990A&A...239..173H)
(25) Ivison et al. (1994MNRAS.269..218I 1994MNRAS.269..218I)
(26) Knapp (1985ApJ...293..273K 1985ApJ...293..273K)
(27) Allen et al. (1993ApJ...411..188A 1993ApJ...411..188A)
(28) Hansen & Blanco (1975AJ.....80.1011H 1975AJ.....80.1011H)
(29) Le Bertre & Epchtein (1987A&A...171..116L 1987A&A...171..116L)
(30) Le Bertre (1991A&A...250..351L 1991A&A...250..351L)
Note (2): nd: not detected;
*: velocity of the single peak at 1665 MHz;
sp: single peak
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Byte-by-byte Description of file: table2a
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Star name
21- 27 I7 d Date Heliocentric Julian Date
30- 34 F5.2 mag Nmag ? N magnitude (10.36 microns)
37- 41 F5.2 mag N1mag ? N1 magnitude (8.38 microns)
44- 48 F5.2 mag N2mag ? N2 magnitude (9.69 microns)
51- 55 F5.2 mag N3mag ? N3 magnitude (12.89 microns)
58- 62 F5.2 mag Q0mag ? Q0 magnitude (18.06 microns)
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Byte-by-byte Description of file: table2b
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Bytes Format Units Label Explanations
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2- 16 A15 --- Name Star name
21- 27 I7 d HJD Heliocentric Julian date
29- 33 F5.2 mag Umag ? U magnitude
35- 39 F5.2 mag Bmag ? B magnitude
41- 45 F5.2 mag Vmag ? V magnitude
47- 51 F5.2 mag Rmag ? R magnitude
53- 56 F4.2 mag Imag ? I magnitude
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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2- 15 A14 --- Name Star name
19 A1 --- l_S400 Limit flag on S400
20- 21 I2 Jy S400 ? Flux at 400 µm
23 A1 --- r_S400 Reference for S400 (1)
26- 27 I2 Jy W400 ? 400µm beam width
30- 33 F4.2 Jy S450 ? Flux at 450µm
35 A1 --- r_S450 Reference for S450 (1)
39- 40 I2 Jy W450 ? 450µm beam width
42- 46 F5.3 Jy S800 ? Flux at 800µm
48 I1 --- r_S800 ? Reference for S800 (1)
51- 52 I2 Jy W800 ? 800µm beam width
55- 57 I3 mJy S1.1 ? Flux at 1.1mm
59 I1 --- r_S1.1 ? Reference for S1.1
62- 63 I2 mJy W1.1 ? 1.1mm beam width
65- 69 F5.1 mJy S1.3 ? Flux at 1.3mm
71 I1 --- r_S1.3 ? Reference for S1.3 (1)
74- 75 I2 mJy W1.3 ? 1.3mm beam width
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Note (1): (1) Sopka et al. (1985ApJ...294..242S 1985ApJ...294..242S)
(2) Marshall et al. (1992PASP..104..397M 1992PASP..104..397M)
(3) Wamsley et al. (1991A&A...248..555W 1991A&A...248..555W)
(4) van der Veen et al. (1995A&A...295..445V 1995A&A...295..445V)
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1 I1 --- Model Grain model 1: Jones and Merrill (1976)
2: table8
3- 13 A11 --- Name Star name
15- 18 F4.2 --- Phase Phase of the variable star
20- 25 F6.2 Jy IRAS60 IRAS flux at 60µm
27- 29 I3 Jy S60,0,T Model 60µm flux for an interstellar density
of 0 H atom/cm^3
31- 33 I3 Jy S60,0,P Model 60µm flux for ID=0 H atom/cm^3,
measured within a beam of 3.15 arcmin
35- 37 I3 Jy S60,1,T Model 60µm flux for an interstellar density
of 1 H atom/cm^3
39- 41 I3 Jy S60,1,P Model 60µm flux for ID=1 H atom/cm^3,
measured within a beam of 3.15 arcmin
43- 45 I3 Jy S60,10,T Model 60µm flux for an interstellar density
of 10 H atom/cm^3
47- 49 I3 Jy S60,10,P Model 60µm flux for ID=10 H atom/cm^3,
measured within a beam of 3.15 arcmin
51 A1 --- l_IRAS100 limit flag on IRAS100
52- 57 F6.2 Jy IRAS100 IRAS flux at 100µm
59- 61 I3 Jy S100,0,T Model 100µm flux for an interstellar density
of 0 H atom/cm^3
63- 65 I3 Jy S100,0,P Model 100µm flux for ID=0 H atom/cm^3,
measured within a beam of 4.25 arcmin
67- 69 I3 Jy S100,1,T Model 100µm flux for an interstellar density
of 1 H atom/cm^3
71- 73 I3 Jy S100,1,P Model 100µm flux for ID=1 H atom/cm^3,
measured within a beam of 4.25 arcmin
75- 77 I3 Jy S100,10,T Model 100µm flux for an interstellar density
of 10 H atom/cm^3
79- 81 I3 Jy S100,10,P Model 100µm flux for ID=10 H atom/cm^3,
measured within a beam of 4.25 arcmin
83- 87 F5.2 Jy S200,0,T Model 200µm flux for an interstellar density
of 0 H atom/cm^3
89- 93 F5.2 Jy S200,0,P Model 200µm flux for ID=0 H atom/cm^3,
measured within a beam of 90 arcsec
95-100 F6.2 Jy S200,1,T Model 200µm flux for an interstellar density
of 1 H atom/cm^3
102-105 F4.1 Jy S200,1,P Model 200µm flux for ID=1 H atom/cm^3,
measured within a beam of 90 arcsec
107-112 F6.1 Jy S200,10,T Model 200µm flux for an interstellar density
of 10 H atom/cm^3
114-118 F5.2 Jy S200,10,P Model 200µm flux for ID=10 H atom/cm^3,
measured within a beam of 90 arcsec
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Byte-by-byte Description of file: table7
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Model Grain model 1: Jones and Merrill (1976);
2: table8
3- 13 A11 --- Name Star name
15- 18 F4.2 --- Phase Phase of the variable star
20 A1 --- l_S400 Limit flag on S400
21 I1 Jy S400 ? Flux at 400µm, measured through a beam
of 37 arcsec
23- 26 F4.2 Jy S400,0,T Model 400µm flux for an interstellar density
of 0 H atom/cm^3
28- 31 F4.2 Jy S400,0,P Model 400µm flux for an ID=0 H atom/cm^3,
measured within a beam of 37 arcsec
33- 37 F5.2 Jy S400,1,T Model 400µm flux for an interstellar density
of 1 H atom/cm^3
39- 42 F4.2 Jy S400,1,P Model 400µm flux for an ID=1 H atom/cm^3,
measured within a beam of 37 arcsec
44- 49 F6.2 Jy S400,10,T Model 400µm flux for an interstellar density
of 10 H atom/cm^3
51- 54 F4.2 Jy S400,10,P Model 400µm flux for an ID=10 H atom/cm^3,
measured within a beam of 37 arcsec
56- 60 F5.3 Jy S800 ? Flux at 800µm,
measured through a beam of 16 arcsec
62- 66 F5.3 Jy S800,0,T Model 800µm flux for an interstellar density
of 0 H atom/cm^3
68- 72 F5.3 Jy S800,0,P Model 800µm flux for an ID=0 H atom/cm^3,
measured within a beam of 16 arcsec
74- 77 F4.2 Jy S800,1,T Model 800µm flux for an interstellar density
of 1 H atom/cm^3
79- 83 F5.3 Jy S800,1,P Model 800µm flux for an ID=1 H atom/cm^3,
measured within a beam of 16 arcsec
85- 90 F6.2 Jy S800,10,T Model 800µm flux for an interstellar density
of 10 H atom/cm^3
92- 96 F5.3 Jy S800,10,P Model 800µm flux for an ID=10 H atom/cm^3,
measured within a beam of 16 arcsec
98- 99 I2 Jy S1.1 ? Flux at 1.1mm,
measured through a beam of 19 arcsec
101-105 F5.1 Jy S1.1,0,T Model 1.1mm flux for an interstellar density
of 0 H atom/cm^3
107-110 F4.1 Jy S1.1,0,P Model 1.1mm flux for an ID=0 H atom/cm^3,
measured within a beam of 19 arcsec
112-117 F6.1 Jy S1.1,1,T Model 1.1mm flux for an interstellar density
of 1 H atom/cm^3
119-122 F4.1 Jy S1.1,1,P Model 1.1mm flux for an ID=1 H atom/cm^3,
measured within a beam of 19 arcsec
124-128 I5 Jy S1.1,10,T Model 1.1mm flux for an interstellar density
of 10 H atom/cm^3
130-133 F4.1 Jy S1.1,10,P Model 1.1mm flux for an ID=10 H atom/cm^3,
measured within a beam of 19 arcsec
135-138 F4.1 Jy S1.3 ? Flux at 1.3mm, measured through
a beam of phi (11" or 24", see n_S1300)
140 A1 --- n_S1.3 [12] Note on S1300. 1: phi = 24"; 2: phi = 11"
143-147 F5.1 Jy S1.3,0,T Model 1.3mm flux for an interstellar density
of 0 H atom/cm^3
149-152 F4.1 Jy S1.3,0,P2 Model 1.3mm flux for an ID=0 H atom/cm^3,
measured within a beam of 24 arcsec
154-157 F4.1 Jy S1.3,0,P1 Model 1.3mm flux for an ID=0 H atom/cm^3,
measured within a beam of 11 arcsec
159-163 F5.1 Jy S1.3,1,T Model 1.3mm flux for an interstellar density
of 1 H atom/cm^3
165-168 F4.1 Jy S1.3,1,P2 Model 1.3mm flux for an ID=1 H atom/cm^3,
measured within a beam of 24 arcsec
171-174 F4.1 Jy S1.3,1,P1 Model 1.3mm flux for an ID=1 H atom/cm^3,
measured within a beam of 11 arcsec
176-181 F6.1 Jy S1.3,10,T Model 1.3mm flux for an interstellar density
of 10 H atom/cm^3
183-186 F4.1 Jy S1.3,10,P2 Model 1.3mm flux for an ID=10 H atom/cm^3,
measured within a beam of 24 arcsec
188-191 F4.1 Jy S1.3,10,P1 Model 1.3mm flux for an ID=10 H atom/cm^3,
measured within a beam of 11 arcsec
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Byte-by-byte Description of file: table8
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Bytes Format Units Label Explanations
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1- 7 F7.2 um lambda Wavelength
9- 17 E9.3 --- Qabs Absorption efficiency factor
19- 27 E9.3 --- Qsca Scattering efficiency factor
29- 37 D9.3 --- g Asymmetry parameter
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Acknowledgements: Thibaut Le Bertre,
References:
Jones & Merrill 1976, ApJ 209, 509 =1976ApJ...209..509J 1976ApJ...209..509J
(End) Patricia Bauer [CDS] 24-Apr-1996