ADC/CDS Standard Document for Catalog:/journal_tables/A+AS/109/171/
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+AS/109/171 Blue horizontal branch stars catalog (Flynn+, 1995)
================================================================================
A catalog of blue horizontal branch stars in the outer galactic halo
Flynn C., Sommer-Larsen J., Christensen P.R., Hawkins M.R.S.
<Astron. Astrophys. Suppl. Ser. 109, 171 (1995)>
=1995A&AS..109..171F (SIMBAD/NED Reference)
================================================================================
ADC_Keywords: Stars, blue; Stars, horizontal branch; Regional catalogs;
Galactic pole, south
Keywords: stars: horizontal-branch - Galaxy: halo, kinematics and dynamics
Abstract:
We present a sample of faint blue stars at medium to high galactic
latitude, and classify the stars as blue horizontal branch (BHB) or
probable non-BHB stars on the basis of medium dispersion spectra and
broadband photoelectric BV photometry. The classification scheme
(Flynn et al. 1993) is as accurate as Stroemgren photometry. Using this
method we have identified a sample of 100 BHB objects in the galactic halo
to faint magnitudes (13.5 < V < 19.5), the selection criteria ensuring
that the sample is the cleanest to date. We analyse the kinematics of the
BHB stars in a subsequent paper.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1 75 24 F117 field (l = 270deg, b = -45deg)
table2 75 46 22h field (l = 38deg, b = -51deg)
table3 75 39 SA287 field (l = 0deg, b = -47deg)
table4 75 47 South Galactic Pole field
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1 table2 table3 table4
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- ID Star name
12- 13 I2 h RAh Right ascension 1950.0
15- 16 I2 min RAm Right ascension 1950.0
18- 21 F4.1 s RAs Right ascension 1950.0
23 A1 --- DE- Declination sign
24- 25 I2 deg DEd Declination 1950.0
27- 28 I2 arcmin DEm Declination 1950.0
30- 31 I2 arcsec DEs Declination 1950.0
33- 37 F5.2 mag Vmag V magnitude
39- 43 F5.2 mag B-V B-V colour
45 I1 --- o_B-V []? Number of observations in B and V
46 A1 --- n_o_B-V A '*' indicates BV data derived from
transformed Stroemgren photometry
47- 48 I2 --- DM Hydrogen line width index
50- 52 A3 --- Class Classification
BHB = blue horizontal branch, ? = unknown
54- 57 I4 km/s RV Heliocentric radial velocity
59- 62 F4.1 kpc Dhel []? Estimated heliocentric distance
64- 67 F4.1 kpc Dgal []? Estimate galactocentric distance
69- 75 A7 --- Note Notes on the observations (1)
--------------------------------------------------------------------------------
Note (1): Numbers indicate the sources or dates of observations of the
photometry, while the letters indicate the sources or dates of observation
of the spectroscopy.
1: photoelectric photometry from Flynn and Sommer-Larsen (1998)
2: CCD photometry from Flynn, Sommer-Larsen and Christensen (1994)
3: new CCD data from the ESO 1.5m (Sept. 1990, Sept. 1991 and Aug. 1992)
A: data from Sommer-Larsen and Christensen (1986)
B: data from Sommer-Larsen and Christensen (1987)
C: data from Sommer-Larsen, Christensen and Carter (1989)
D: ESO 2.2m, Nov. 1987
E: MSSSO 2.3m, Aug. 1998
F: ESO 2.2m, Sep. 1998
G: ESO 2.2m, Aug. 1989
H: ESO 2.2m, Nov. 1990
I: ESO 3.5m, New Technology Telescope, Sep. 1991 and Aug. 1992
--------------------------------------------------------------------------------
References:
Flynn C. and Sommer-Larsen J. 1988, MNRAS 235, 175
Flynn C., Sommer-Larsen J. and Christensen P.R. 1994, MNRAS 267, 77
Sommer-Larsen J. and Christensen P.R. 1986, MNRAS 219, 537
Sommer-Larsen J. and Christensen P.R. 1987, MNRAS 225, 499
Sommer-Larsen J., Christensen P.R. and Carter D.C. 1989, MNRAS 238, 225
--------------------------------------------------------------------------------
================================================================================
(End) Patricia Bauer [CDS] 21-Sep-1994