Carbon Stars
TheSky SDB
If you do not
have Reference Points set to visible you will not see the Carbon Stars.
Using the Display Explorer
Enabling object type
"Reference Points"
Use the Display Explorer
Edit Find dialog
Note Carbon Stars under the SDB list
To search use Edit | Find Carbon
Stars and the number.
NOTE: Firstly the coordinates are EPOCH
1900.00. When compiling this particular dataset make sure you are using EPOCH 1900.00.
See the README for details. This
must be manually type in. The default EPOCHS are 1950 and 2000. See below.
Compile using EPOCH 1900.00
Enter 1900 manually!
It should also be noted that the
stellar coordinates are not extremely accurate. Caution should be taken when
using these positions. There
are cases when the star's position found in the data does not match the location
of the star's true position very well. Generally they are close enough to aid in finding the
stars true position but in some cases there doesn't seem to be a star in the vicinity.
Case and point
The above screen shot shows 1
billion stars plotted in TheSky using the USNO-B1 and UCAC2 data. Along with
that the image from the Palomar Sky Survey is plotted too. You can see the
slight error in stellar position and the large error found in the Carbon Stars
data. Once has to assume the large star is the correct location since the
position and magnitude are very close. The error from the star to the Carbon
Stars position is ~25 arcseconds. Hopefully you will find most of the stars very
near the right coordinates.
Relate links
Skiff - Carbon Stars downloads
nb54.carb 271 carbon stars 1954ApJ...120..129N
nb57.carb 400 carbon stars 1957ApJ...125..195N
The following header defines the
field in the text. The Read me
included with the text has the information needed. ;Copyright, TheSky 2007
>SEARCH 1,4
>RAHOURS 7,8
>RAMINUTES 10,11
>RASECONDS 13,16
>DECSIGN 19,19
>DECDEGREES 20,21
>DECMINUTES 23,24
>DECSECONDS 26,27
>OBJECT TYPE 42,42
>MAGNITUDE 35,38
>CATALOG CLASS=POINTS
>LOADMEMORY
>IDENTIFIER Carbon Stars
>PARSE "Catalog running number" 1,4
>PARSE "Photog. Magnitude numerical" 30,33
>PARSE "? Infrared magnitude, numerical" 35,38
>PARSE "Spectral Type" 74,91
>PARSE "Galactic Longitude/Lat."46,63
>PARSE "?vmag ?imag" 64,73
>PARSE "Remarks" 126,132
>PARSE "Designations string" 92,125
>PARSE "Pos. Coordinates flag" 134,134
>OBJECT TYPE 55
The Object Type 55 above is the type Reference
Point. The name that appears in the SDB list and that used to search is
IDENTIFIER Carbon Stars. Feel free to change. Or even create your own
Carbon Stars unique symbol!
III/156 Cool Galactic Carbon Stars, 2nd Edition (Stephenson 1989)
================================================================================
A General Catalog of Cool Galactic Carbon Stars, 2nd edition
Stephenson C.B.
<Publ. Warner & Swasey Obs., 3, No. 2 (1989)>
=1989PW&SO...3...53S
================================================================================
ADC_Keywords: Stars, carbon
Description:
The catalog is intended to list all 5987 cool carbon stars having known
positions of at least roughly the precision of The Henry Draper
Catalogue. Cool carbon stars are defined as stars whose spectra at low
dispersion (say a resolution no better than 1-2 angstroms) are known
to show bands of the Swan system of the C2 molecule; or, if the
spectral region of the Swan system is inadequately observed, they show
the red or infrared bands of CN in strength adequate to infer that the
Swan bands almost certainly would be seen if their presence could be
tested. The closing date for literature search was 1989 June 30,
defined by literature received in the author's library by that date.
The catalog includes equatorial coordinates (B1900.0); photographic,
visual, and infrared magnitudes; spectral types, galactic coordinates,
and cross identifications to various other designation systems.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
carbon.dat 135 5987 Data for 5987 carbon stars
notes.dat 80 1426 Notes to the catalog
table2.dat 115 167 Stars that have been published as Carbon,
but probably or definitively are not.
tbl2note.dat 96 46 Notes for Table 2
--------------------------------------------------------------------------------
Byte-by-byte Description of file: carbon.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1-4 I4 --- CGCS [1/5987]+ Catalog running number
7-8 I2 h RAh Right Ascension B1900 (hours), see PosFlag
10-11 I2 min RAm Right Ascension B1900 (minutes)
13-16 F4.1 s RAs Right Ascension B1900 (seconds)
19 A1 --- DE- Declination sign
20-21 I2 deg DEd Declination B1900 (degrees), see PosFlag
23-24 I2 arcmin DEm Declination B1900 (minutes)
26-27 I2 arcsec DEs Declination B1900 (seconds)
30-33 F4.1 mag Pmag ? Photog. magnitude, numerical
34 A1 --- u_Pmag [: ] Colon for uncertainty in Pmag
35-38 F4.1 mag Vmag ? Visual magnitude, numerical
39 A1 --- u_Vmag [: ] Colon for uncertainty in Vmag
40-43 F4.1 mag IRmag ? Infrared magnitude, numerical
44 A1 --- u_IRmag [: ] Colon for uncertainty in IRmag
46-50 F5.1 deg GLON galactic longitude, l(II)
52-56 F5.1 deg GLAT galactic latitude, b(II)
58 A1 --- l_bmag [<>] Limit on bmag
59-62 F4.1 mag bmag ?b magnitude
63 A1 --- l_vmag [<>] Limit on magnitude vmag
64-67 F4.1 mag vmag ?v magnitude
68 A1 --- n_vmag [RVrv:] uncertain; v/V=variable; r/R=remark
70-73 F4.1 mag imag ?i magnitude
74 A1 --- n_imag [rv:] Magnitude flag on i
75-91 A17 --- SpType Spectral types string
92-125 A34 --- Names Designations string
126-132 A7 --- Rem Remarks string (see also file notes.dat)
134-135 I2 --- PosFlag *Position (coordinates) Precision flag
--------------------------------------------------------------------------------
Note on PosFlag:
The following table lists the value of Position Precision flag and gives
the corresponding format used in the printed (published) catalog.
PosFlag Printed Format
0,1 HH MM SS.S +dd mm ss
2 HH MM SS +dd mm.m
3 HH MM.M
--------------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1-4 I4 --- CGCS [1/5987]+= Catalog running number
5 A1 --- cont [+] The '+' indicates incomplete record
8-80 A73 --- rem comments
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1-2 I2 h RAh RA hours (B1900)
4-5 I2 min RAm RA in minutes (B1900)
7-10 F4.1 s RAs RA in seconds (B1900)
13 A1 --- DE- Sign of Declination (B1900)
14-15 I2 deg DEd Dec degrees (B1900)
17-18 I2 arcmin DEm Dec in arcminutes (B1900)
20-21 I2 arcsec DEs ?Dec in arcseconds (B1900)
22 A1 --- cont [+] The '+' indicates incomplete record
24-59 A36 --- SpSource Spectral Sources or Designations
60-115 A56 --- rem Remarks (see also file tbl2note.dat)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tbl2note.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1-2 I2 h RAh *RA hours (B1900)
4-5 I2 min RAm *RA in minutes (B1900)
7-10 F4.1 s RAs *RA in seconds (B1900)
11 A1 --- cont [+] The '+' indicates incomplete record
19-96 A78 --- rem Remarks
--------------------------------------------------------------------------------
Note on RAh, RAm, RAs:
The notes to Table 2 (table2.dat) are referenced by right ascension.
--------------------------------------------------------------------------------
Remarks and Modifications:
* Star #364 was found to have an incorrect declination in both the
published and machine-readable catalogs. The latter has been corrected
in both declination and galactic coordinates...WHW/ADC 3/1991.
* Star #4942 was erroneously typed 4972 (FO/CDS, 1997/01)
Acknowledgements:
The ADC Intro file provided by C. B. Stephenson (1989) together with
the description file by Wayne H. Warren (1991) were used to create this
ReadMe file.
================================================================================
(End) C.-H. Joseph Lyu [Hughes STX/NASA] 19-Jun-1996
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