BY Dra

Query : BY Dra C.D.S. - SIMBAD4 rel 1.225 - 2015.07.31CEST05:11:43

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
V* BY Dra -- Variable of BY Dra type
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
BY* (), * (AG,ASCC,BD,GC,GCRV,GEN#​,GJ,GSC,HD,HIC​,HIP,JP11,PLX,PPM​,SAO,TYC,UBV,USNO,YZC,YZ), X (2E,1ES,RE,RX,1RXS,[FS2003]), PM* (Ci,G,LSPM,LTT,NLTT), SB* (CABS,CCABS,SBC7,SBC9), UV (2EUVE,EUVE,2RE), ** (**,WDS), V* (V*,CSV), Rad (RGB,[BSF97]), IR (IRAS,2MASS), Fl* ([GKL99])
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
18 33 55.77264 +51 43 08.9073 ( Optical ) [ 6.33 5.89 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK5 coord. (ep=J2000 eq=2000) :
18 33 55.773 +51 43 08.91 [ 6.33 5.89 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
18 32 44.69 +51 40 59.9 [ 36.48 34.09 0 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra : right ascension (unit and frame defined according to your Output Options)
  • dec : declination (unit and frame defined according to your Output Options)
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • quality : flag of quality
    • E >= 10
    • D : 1-10(and some old data)
    • C : 0.1-1
    • B : 0.01-0.1+ 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
080.5567 +23.5794 [ 6.33 5.89 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, ~ =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
186.51 -324.69 [0.72 0.67 0] A 2007A&A...474..653V
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, ~ =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) -25.43 [0.08] / z(~) -0.000085 [0.000000] / cz -25.43 [0.08]   (~) A 2004MNRAS.349.1069K
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, ~ =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes mas:
61.15 [0.68] A 2007A&A...474..653V
Spectral type is made of 3 parts:
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality->E=worst quality, ~ =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
K4Ve+K7.5Ve C 1989ApJS...71..245K
Syntax of fluxes (or magnitudes) is : "filter-name flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, J, H, K, u, g, r, i, z
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, ~ =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (8) :
U 10.22 [~] C 2002yCat.2237....0D
B 9.23 [~] C 2002yCat.2237....0D
V 8.04 [~] C 2002yCat.2237....0D
R 7.5 [~] E 2003AJ....125..984M
I 6.9 [~] E 2003AJ....125..984M
J 5.597 [0.023] C 2003yCat.2246....0C
H 5.020 [0.016] C 2003yCat.2246....0C
K 4.843 [0.021] C 2003yCat.2246....0C
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within radius arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 1 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (53) :

V* BY Dra GC 25394 LTT 15477 SBC7 695
** ZUC 16A GCRV 11044 2MASS J18335574+5143094 SBC9 1069
AG+51 1244 GEN# +1.00234677 NLTT 46684 TYC 3539-2623-1
ASCC 266915 G 228-31 PLX 4280.01 UBV M 27798
BD+51 2402 G 229-7 PPM 36705 USNO-B1.0 1417-00317842
CABS 156 G 227-36 2RE J1833+514 WDS J18339+5144A
CCABS 126 GJ 719 2RE J183356+514313 YZC 26 5661
Ci 18 2443 GSC 03539-01850 RE J1833+514 YZ 51 5661
CSV 102879 HD 234677 RE J183356+514308 [BSF97] J183359.45+514319.4
2E 4094 HIC 91009 RGB J1833+517 [FS2003] 0977
2E 1832.7+5140 HIP 91009 RX J1833.9+5142 [GKL99] 358
1ES 1832+51.6 IRAS 18327+5140 RX J1833.8+5143
2EUVE J1833+51.7 JP11 3682 1RXS J183355.9+514313
EUVE J1833+51.7 LSPM J1833+5143 SAO 31048

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References (559 between 1850 and 2015)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Measurements (17 types) :


Einstein : 1    Fe_H : 4    IRAS : 1    ISO : 2    IUE : 64    JP11 : 2    MK : 2    oRV : 3    PLX : 3    PM : 5    pos : 1    posa : 2   
ROT : 2    SAO : 1    UBV : 1    V* : 1    velocities : 5   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database

Catalogue information from VizieR :

Generic search by coordinates (radius: 8 arcsec)

V* BY Dra AG+51 1244 BD+51 2402 CABS 156 EUVE J1833+51.7
G 228-31 G 229-7 G 227-36 GJ 719 GSC 03539-01850
HD 234677 HIC 91009 HIP 91009 IRAS 18327+5140 LSPM J1833+5143
2MASS J18335574+5143094 NLTT 46684 PPM 36705 2RE J1833+514 2RE J183356+514313
1RXS J183355.9+514313 SAO 31048 TYC 3539-2623-1 USNO-B1.0 1417-00317842 WDS J18339+5144A
[GKL99] 358

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The list of all annotations to SIMBAD objects can be found here .

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2015.07.31-05:11:43

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