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M31STARS: Help

M31STARS - M31 Field Brightest Stars Catalog


Overview

Thie database table is a catalog of 11438 stars in the field of M31 and 8778 stars in 2 nearby "foreground" fields. It is based on a set of Tautenburg Schmidt plates in U, B, V, and R taken by van den Bergh. The range of visual magnitudes of stars is 11.5 < V < 20.

Catalog Bibcode

1988A&AS...76...65B

References

Berkhuijsen E. M., Humphreys R.M., Ghigo F.D., Zumach W.; 1988
	Astron. Astrophys. Suppl. Ser. 76, 65
	Astron. Astrophys. 214, 68

Parameters

Name
Designation designed with the catalog name (M31 for the Field of M31 Stars, and FM31 for the Foreground of M31 Stars), the declination degrees and a sequential number.

RA
The Right Ascension of the object.

Dec
The Declination of the object.

LII
The galactic longitude of the object.

BII
The galactic latitude of the object.

Type_Appmag
Type (V or B) of apparent magnitude given.

Appmag
Apparent magnitude.

Appmag_Error
Mean error in apparent magnitude.

Appmag_Flag
M indicates a marginal apparent magnitude.

UB_Color
(U-B) Color.

UB_Color_Error
Mean error in (U-B) color.

UB_Color_Flag
M indicates a marginal (U-B) color.

BV_Color
(B-V) Color.

BV_Color_Error
Mean error in (B-V) color.

BV_Color_Flag
M indicates a marginal (B-V) color.

VR_Color
(V-R) Color.

VR_Color_Error
Mean error in (V-R) color.

VR_Color_Flag
M indicates a marginal (V-R) color.

Orig_File
File Origin. There are 2 values for this parameter: M31 FIELD means that the star lies within an irregularly shaped field centered on M31, while FOREGROUND FIELD means that this stars lies within 1 of 2 nearby foreground fields on either side of the M31 field. (See Fig. 1 of Berkhuijsen and Humphreys 1989, Astronomy and Astrophysics, Vol. 214, page 68 for an illustration of these fields). A star which is in the M31 field may still be a foreground object, notice. Indeed, Berkhuijsen and Humphreys estimate that only about 2660 of the 11438 stars in the M31 field are actually members of M31.

Class
BROWSE classification type. The classification is based on the `Type` parameter, if one is available.


Contact Person

Questions regarding the M31STARS database table can be addressed to the HEASARC User Hotline.
If you have any problems, please consult the help page or mail ledas-help@star.le.ac.uk
 
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