2. Name: Name of the star
3. Sp T.: Spectral Type obtained using the
method described in Hernández et al (2003).
Link => Spectral Information about the object.
Spectral Type and its error
Numerical Results from each useful index.
Emission lines measured on the spectrum
(Element central wavelength Equivalent Width)
Abnormal features on the spectrum.
(Element central wavelength Equivalent Width)
Previously published spectral types.
The numerical scale applied in the method is:
Spectral Type |
B0 |
B5 |
A0 |
A5 |
F0 |
F5 |
G0 |
G5 |
Lineal Scale |
20 |
25 |
30 |
35 |
40 |
45 |
50 |
55 |
The indices used to obtain the spectral type
are:
Index Element
Central Wavelength (A)
1 CaII(K)
3933
2 HeI
4026
3 FeI+ScI
4047
4 Hdelta
4102
5 HeI+FeI
4144
6 CN+FeI
4175
7 CaI
4226
8 FeI
4271
9 CH (Gband)
4305
10 Hgamma
4349
11 HeI+FeI
4387
12 MnI+FeI
4458
13 HeI+FeI+MnII
4471
14 MnII
4481
15 FeI+MnII
4490
16 FeI
4532
17 HeII+OII+FeI
4669
18 FeI
4787
19 HeI+FeI
4922
20 HeI+FeI+TiI
5016
21 FeI+TiI+CrI
5079
22 FeII+MgI
5173
23 CaI+FeI
5270
24 FeI
5329
25 FeI
5404
26 CaI+TiO
5589
27 FeI+MgI
5711
28 HeI+NaI
5876
29 NaI+TiI
5890
30 MnI
6015
31 CaI
6162
32 HeI
6678
33 HeI
7066
4. Err: Error of the calculated spectral type ( in subclasses)
5. Halpha: Equivalent Width of H alpha
(A) :
Link => Profile at the Balmer line H alpha
(6463A - 6663A)
The flux was normalized at the nearby
continuum bands.
6. Spectrum (View): Link => FAST spectrum
of the object (To see)
The flux was normalized at 5500 A.
The detector response was taken out
using spectrophotometric standard stars and the IRAF sensfunc task.
Warning: This procedure is not a flux calibration of the spectrum.
7. Spectrum (Load): Link => Spectrum of the object in FITS format (To load)
Observations were done at the 1.5 meter telescope of the Whipple Observatory with the FAST Spectrograph, equipped with the Loral 512 x 2688 CCD (15 microns square pixels). The spectrograph was set up in the standard configuration used for FAST COMBO projects: the 300 groove mm^{-1} grating and a 3'' wide slit. This combination offers 3400A of spectral coverage centered at 5500A, with a resolution ~ 6A.
8. Image: Finding chart of the object.
Link = >Image 0.2 x 0.2 degree from
the Digital Sky Survey (Sky View).
Object labeled are taken from Herbig and Bell
catalog (1988).
The object labeled number 1 is the selected
star.
9. SEDs: Link => Spectral energy distribution (U-L) of the star using optical and near infrared photometry (Table 2).
We used the following filter wavelength
(WL) and flux densities (fo) for the A0 (magnitude=0) star to
transform magnitudes to fluxes.
Filter |
U |
B |
V |
R |
I |
J |
H |
K |
L |
WL(microns) |
0.36 |
0.44 |
0.55 |
0.71 |
0.97 |
1.22 |
1.63 |
2.19 |
3.55 |
fo ( erg/(cm^2.s.A) ) |
4.22e-9 |
6.40e-9 |
3.75e-9 |
1.75e-9 |
8.4e-10 |
312e-12 |
114e-12 |
39.4e-12 |
6.59e-12 |
The magnitude (mo) corrected for absorption
(mo=m-Am) was calculated using the relations from Cardelli et al (1989) and
the Av
derived from the color excess E(B-V) using
different extinction law (Rv=3.1 and Rv=5.0)
Av=Rv*E(B-V)
Objects without spectral type in Hernández et al (2003) were plotted using an estimated type, taken from Table 10, column 6, in Hernández et al (2003), previously published spectral types were used for the continuum stars. The nominal error was set as one spectral type. These SED should de used with caution. See Hernández et al (2003) for details.
10. LightCurv: number of V measurements for each object.
Link => Light curve of V magnitude and the colors U-B, V-B and V-Rj (figure postscript)
The line at the upper panel (V magnitude)
show the median value of the data.
The plot also show the information about the median values of colors
U-B, B-Vand V-Rj.
If are available, we give the median values of Rj-Ij, V-Rc, and
Rc-Ic at the top of each figure.
These data was obtained from Van Vleck Observatory database (Wesleyan University).
Description of these data are at Herbst and
Shevchenko (1999).
11. REF(1960-2002): Link => References for the object until 2002 (SIMBAD)
12. Comment: Comments about the object.