ADC/CDS Standard Document for Catalog:/journal_tables/A+A/267/515/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/A+A/267/515 Very cold C-rich circumstellar envelopes (Omont+ 1993)
================================================================================
Characterization and proportion of very cold C-rich circumstellar envelopes
Omont A., Loup C., Forveille T., te Lintel Hekkert P.,
Habing H., Sivagnanam P.
<Astron. Astrophys. 267, 515, (1993)>
=1993A&A...267..515O
================================================================================
ADC_Keywords: Infrared sources ; Radio lines ; Stars, carbon
Keywords: infrared radiation - radiolines: molecular - stars: carbon -
stars: circumstellar matter - stars: late-type - stars: OH/IR
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1 58 19 Supergiants
table2 120 57 Sources with CO(2-1) or HCN(1-0) emission
table3 116 27 Non-detected sources
table4 77 28 CO/HCN line ratios
table5 80 24 Estimates of mass-loss rates
tablea1 113 228 Master list of the main sample
tablea2 98 18 Additional sources
--------------------------------------------------------------------------------
Table6 : Number and proportion of C- and O-rich sources in the different
regions of the IRAS color-color diagram (Fig. 1) from tablea1.
The last column indicates the rate of OH detections among the
sources classified as O-rich where OH was searched
Region Total O-rich C-rich ? OH/O
-----------------------------------------
IIIa2 61 59 0 2 52%
IIIa1 88 52 31 5 67%
(59%) (35%) (6%)
IIIb2 38 27 9 2 77%
(71%) (24%) (5%)
IIIb1+IV 17 17 0 0 100%
V 17 7 4 6 (100%)
VIb 7 6 0 1 ( 25%)
-----------------------------------------
Total 228 168 44 16 68%
(74%) (19%) (7%)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- No Identification number in tablea1 and tablea2
7- 16 A10 --- Name Usual name
20 A1 --- Sp Spectral type
26- 30 A5 --- Region Region in the IRAS color-color diagram (1)
34- 36 A3 --- LRS LRS spectral class
41- 45 I5 solLum FIRAS IRAS total flux expressed in solar
luminosity at 1kpc
58 A1 --- n [+?] A + indicates the post-AGB nature of
the star
--------------------------------------------------------------------------------
Note (1):
Region in the IRAS color-color diagram according to the definitions
of van der Veen & Habing (1988A&A...194..125V), and this paper
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2 table3
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- No Identification number in tablea1 and tablea2
5- 14 A10 --- Name Usual name
16- 17 I2 h RAh ? Right ascension 1950
19- 20 I2 min RAm ? Right ascension 1950
22- 25 F4.1 s RAs ? Right ascension 1950
27 A1 --- DE- ? Declination sign
28- 29 I2 deg DEd ? Declination 1950
31- 32 I2 arcmin DEm ? Declination 1950
34- 35 I2 arcsec DEs ? Declination 1950
37 A1 --- Chem. [COS] Chemical type
38 A1 --- n_Chem. [*#] (1)
39 A1 --- u_Chem. [?] uncertainty flag on chemical type
41- 45 A5 --- Region Region in the IRAS color-color diagram (2)
47- 55 A9 --- Tran. Observed transitions
57- 59 I3 km/s Vlsr ? Star velocity
61- 64 F4.1 km/s Ve ? Expansion velocity as the half width at
zero power
66- 70 F5.3 K TMB ? Main-beam brightness temperature measured
at the peak of the line
72- 76 F5.3 K e_TMB ? rms noise of T_MB
78- 82 F5.1 K.km/s I ? Integrated area
83 A1 --- u_I [?] uncertainty flag on I
84 A1 --- l_I(CO)/I(HCN) limit flag on ICO/IHCN
85- 88 F4.1 --- I(CO)/I(HCN) ? Intensity ratio CO(2-1)/HCN(1-0)
90- 94 F5.2 --- S60/I(CO) ? Ratio 60 micrometer to CO(2-1) emissions
97-126 A30 --- Rem Remarks (3)
--------------------------------------------------------------------------------
Note (1):
* indicates that the determination of the chemical type comes from this
paper,
# indicates that the chemical type was confirmed in this paper
Note (2):
Region in the IRAS color-color diagram according to the definitions of
van der Veen & Habing (1988A&A...194..125V), and this paper
Note (3):
Obervation date, mapping, interstellar contamination,
numbers in brackets indicate references of previous detections
(1) Zuckerman & Dyck 1986ApJ...304..394Z
(2) Zuckerman et al. 1986ApJ...304..401Z
(3) Zuckerman & Dyck 1986ApJ...311..345Z
(4) Arquilla et al. 1986MNRAS.220..125A
(5) Likkel et al. 1987A&A...173L..11L
(6) Lucas et al. 1988A&A...194..230L
(7) Lindqvist et al 1988A&A...205L..15L
(8) Knapp et al. 1989ApJ...336..822K
(9) Zuckerman & Dyck 1989A&A...209..119Z
(10) Woodsworth et al. 1990A&A...228..503W
(11) Likkel et al. 1991A&A...246..153L
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- No Identification number in tablea1 & tablea2
5- 14 A10 --- Name Usual name
16- 20 A5 --- Region Region in the IRAS color-color diagram (1)
23- 28 A6 --- LRS LRS spectral class
31 A1 --- Chem. [COS] Chemical type
32 A1 --- u_Chem. [?] uncertainty flag on chemical type
36 A1 --- l_CO(1-0)/HCN [~] limit flag on CO(1-0)/HCN
37- 40 F4.1 --- CO(1-0)/HCN ? CO(1-0)/HCN line ratio
45- 48 F4.1 --- CO(2-1)/HCN ? CO(2-1)/HCN line ratio
54- 58 A5 --- Ref References (2)
63- 82 A20 --- Com Comments
--------------------------------------------------------------------------------
Note (1):
Region in the IRAS color-color diagram according to the definitions of
van der Veen & Habing (1988A&A...194..125V), and this paper
Note (2):
(0) present paper (Table 2)
(13) Nguyen-Q-Rieu et al. 1987A&A...180..117N
(14) Sopka et al. 1989A&A...210...78S
(15) Knapp & Morris 1985ApJ...292..640K
(16) Nercessian et al. 1989A&A...210..225N
(17) Bujarrabal et al. 1988A&A...204..242B
(18) Morris et al. 1987ApJ...321..888M
(19) Bachiller et al. 1988A&A...196L...5B
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- No Identification number in tablea1 & tablea2
5- 14 A10 --- Name Usual name
16- 20 A5 --- Region Region in the IRAS color-color diagram (1)
23- 28 A6 --- LRS LRS spectral class
30 A1 --- Chem. [COS] Chemical type
31 A1 --- u_Chem. [?] uncertainty flag on chemical type
35- 38 F4.2 --- Ftot/FIRAS Bolometric correction
41 A1 --- r_Ftot/FIRAS references for Ftot (2)
45- 48 F4.2 kpc D Distance
49 A1 --- n_D note for D (3)
53- 56 F4.2 10-5Sun/yr dM1/dt ? mass-loss rate form CO(1-0) (4)
60- 62 A3 --- r_dM1/dt references for J=1-0 CO observations
66- 71 F6.4 10-5Sun/yr dM2/dt ? mass-loss rate from CO(2-1) (4)
72 A1 --- n_dM2/dt note for dMCO(2-1)/dt (3)
76- 80 F5.2 --- dMIR/dt ? mass-loss rates deduced from infrared
observations following Jura & Kleinmann
(1989, ApJ 341, 369)
--------------------------------------------------------------------------------
Note (1):
Region in the IRAS color-color diagram according to the definitions of
van der Veen & Habing (1988A&A...194..125V), and this paper
Note (2):
(a) van der Veen & Breukers (1989) from actual 1-60 micrometer photometry
(b) applying to S12 the bolometric corrections proposed by
van der Veen & Breukers
(c) assuming the following values for Ftot/Firas, 2 for region IIIa1,
1.2 for region IIIb2, 1.0 for region V without visible star,
2.5 for region V where a visible star is reported
(d) Kwok et al. 1989.
Note (3):
'p' inappropriate if the source is a supergiant
'q' extended CO(2-1) source, dM2/dt should be multiplied by ~2
Note (4):
mass-loss rate are deduced from Eqs (3) and (4) assuming
f_CO=10^-3 for C-rich sources and f_CO=5.10^-4 for others
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea1 tablea2
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- n_No A "*" preceding the number indicates that the
source was observed in the millimeter lines
in the present study
2- 5 A4 --- No Classification number
7- 16 A10 --- IRAS IRAS-PSC (1985) name
19- 23 F5.2 --- C21 25/12{mu}m index, C21 = log (12F_25/25F_12)
24 A1 --- u_C21 [)] uncertainty flag on C21
26- 30 F5.2 --- C32 60/25{mu}m index, C32 = log(25F_60/12F_25)
31 A1 --- u_C32 [)] uncertainty flag on C32
33- 37 F5.3 solLum FIRAS ? IRAS total flux expressed in solar
luminosity at 1kpc
41- 42 I2 --- Var. ? variability index from the IRAS-PSC
catalogue (1985)
46- 52 A7 --- Region Region of the IRAS color-color diagram (1)
54 A1 --- OH [-+.] OH maser detection (2)
58- 61 A4 --- RefOH References for OH maser observations (3)
64- 69 A6 --- LRS LRS spectral class (4)
70 A1 --- u_LRS [?] uncertainty flag on LRS
72 A1 --- Chem. [COS] Proposed chemical type
73 A1 --- u_Chem. [?] uncertainty flag on chemical type
77 A1 --- CO CO detections (2)
78 A1 --- HCN [-+.*] HCN detections (2)
82 A1 --- H2O [-+.] H2O detections (+) or non-detections (-)
from the catalogue of Comoretto et al.
(1990, A&AS 84, 179)
84-113 A30 --- Rem Remarks (5)
--------------------------------------------------------------------------------
Note (1):
(1) Region in the IRAS color-color diagram according to the definitions of
van der Veen & Habing (1988A&A...194..125V), and this paper
Note (2):
+ : detected with circumstellar characteristics;
- : undetected or interstellar characteristics;
. : not searched
* : new detection of the present paper
Note (3):
t : catalogue of OH/IR stars by te Lintel Hekkert et al. (1989)
D,B,P : observations at Dwingeloo, Bonn-Effelsberg, and Parkes,
respectively, in te Lintel Hekkert et al. (1991a)
n,N,N': observations at Nancay,
n Sivagnanam et al. (1990)
N Le Squeren et al. (1991)
N' te Lintel Hekkert et al. (1991b)
L : Likkel (1990)
a : observations at Arecibo
W : catalogue of observations of stellar masers by Benson et al. (1990)
Note (4):
LRS spectral class, from the IRAS-LRS atlas (1986) when available;
otherwise, from the IRAS-LRS database, without determination of the
subclass n (Appendix). Most sources classified 5n would have appeared
as 50 or 05 in the LRS atlas. Spectra quoted as 4no are 4n spectra
with 18 micrometer silicate emission (Fig.2, rows II and III).
"kvh" indicates the presence of the 21 micrometer emission
(Kwok et al., 1989) (Fig.5, row II).
"int" denotes intermediate spectra with a maximum in the middle of the
LRS range (Fig.5, row I), probably characteristics of the very early
stages of the detachment of PPN envelopes (Loup, 1991).
Note (5):
(i) Most usual name(s);
T = IRC from the Two Micron Sky Survey (Neugebauer and Leighton, 1969)
(see catalog <II/2>
GL = RAFGL catalogue (Price and Murdock, 1983; see catalog <II/94>)
SAO = SAO catalogue, Cat. <I/131>
V = General Catalogue of Variables Stars (Kholopov 1985, 1987)
DO = Deaborn catalogue, cat. <II/68>
(ii) [] visible spectral types mostly from the IRAS PSC catalogue (1985)
(iii) zeta44 autoclass from the auto-classification of LRS spectra
by Cheeseman et al. (1989) for objects of autoclass zeta44
(iv) Sources marked with a * present a special interest and
deserve further peculiar studies. They include (objects xa belong to
Table A2) :
(a) double-shell envelopes of region VIb, Nos 29, 57, 74, 89, 124, 130,
141, 16a
(b) 21 micrometer sources (kvh spectra), Nos 33, 216, 4a, 17a,
possibly 13a
(c) "int" spectra, Nos 85, 136, 159, 179 (Fig.5), 10a
(d) 4n OH emitters without 18 micrometer feature (Le Squeren et al.,
1991), Nos 67, 142;
(e) No. 8a with a very strong silicate absorption and no OH emission
(f) OH+HCN emitter, No.208
(g) The peculiar OH spectrum 17376-3021 (No. 68) (te Lintel Hekkert et
al. 1991a)
(h) Sources associated with visible stars: Be (Nos. 24b, 26, 30, 102,
109, 195) or others (Nos. 36, 38, 5a, 11a, 15a)
(i) Peculiar objects of region V:17441-2411 (GL 2385, No.72), which
displays extended CO emission; 18095+2704 (No.95) with a very
strong silicate absorption and a very strong 25 micrometer excess
(Volg & Kwok 1988)
-------------------------------------------------------------------------------
History: Keypunched at CDS
================================================================================
(End) Patricia Bauer [CDS] 22-Apr-1994