HD 131976

Query : HD 131976
C.D.S. - SIMBAD4 rel 1.6 - 2018.04.22CEST04:50:56

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


Basic data :
HD 131976 -- Spectroscopic binary
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:
* (HD,BD,...), PM* (Ref,Ci,...), ** (**,ADS,...), SB* (Ref,SBC9), IR (DENIS,2MASS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (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) :
14 57 26.53330 -21 24 41.5778 (Optical) [ 181.82 141.21 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (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) :
14 54 31.23 -21 11 16.5 [ 1043.60 824.31 0 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (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) :
338.2392 +32.6833 [ 181.82 141.21 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 :
961.78 -1677.83 [20.68 16.08 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) 25.9 [2] / z(~) 0.000086 [0.000007] / cz 25.90 [2.00]
   B 1979IAUS...30...57E
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):
168.77 [21.54] A 2007A&A...474..653V
Spectral type is made of 3 parts: %coding is composed of 4 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 %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
M1.5V B 1989ApJS...71..245K
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • 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 10.759 [~] C 2010MNRAS.403.1949K
B 9.559 [~] C 2010MNRAS.403.1949K
V 8.065 [~] C 2010MNRAS.403.1949K
R 7.075 [~] C 2010MNRAS.403.1949K
I 9.02 [0.03] C 2005yCat.2263....0T
J 4.55 [0.26] D 2003yCat.2246....0C
H 3.91 [0.20] D 2003yCat.2246....0C
K 3.80 [0.23] D 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!).
Some important notes on this object about identifications and objects associations.
notes:

  • In the literature component Bb = GJ 570 C while GJ 570 B is either the system or the component Ba. GJ 570 C shoud not be confused with ** HN 28C.


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

: 2 : 2 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (47) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 131976 GJ 570 B NLTT 38871 UBV M 20455
** HN 28B GJ 570 C 8pc 163.63B UCAC2 23639754
** HN 28Ba,Bb GSC 06180-01230 8pc 163.63C UCAC4 343-073964
ADS 9446 B GSC 06180-01225 PM J14574-2124W uvby98 100131976
BD-20 4123 HIC 73182 PMSC 14516-2058Bab VVO 267
CCDM J14574-2124B HIP 73182 PMSC 14516-2058B WDS J14575-2125Ba,Bb
Ci 20 899 JP11 2550 PPM 263608 WDS J14575-2125B
CSI-20 4123 1 LFT 1160 SAO 183039 WEB 12541
DENIS J145726.4-212439 LHS 386 SBC9 1475 YZ 111 6201
GC 20111 LPM 550 StKM 2-1092 Zkh 215
GCRV 8667 LTT 5948 TYC 6180-1230-1 [RHG95] 2368
GEN# +1.00131976 2MASS J14572643-2124384 UBV 12989

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References (121 between 1998 and 2018) (Total 207)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

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Collections of Measurements


distance : 2    diameter : 1    velocities : 8    ROT : 2    PM : 6    Fe_H : 2    PLX : 3    MK : 6   

   

Observing logs


herschel : 3    IUE : 4   

   


External archives :

Link by name to the catalogue in VizieR :

HD 131976 BD-20 4123 CCDM J14574-2124B DENIS J145726.4-212439 GJ 570 B
GJ 570 C GSC 06180-01230 GSC 06180-01225 HIC 73182 HIP 73182
LHS 386 2MASS J14572643-2124384 NLTT 38871 PPM 263608 SAO 183039
TYC 6180-1230-1 UCAC2 23639754 UCAC4 343-073964 uvby98 100131976 WDS J14575-2125Ba,Bb
WDS J14575-2125B

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Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
The list of all annotations to SIMBAD objects can be found here .

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2018.04.22-04:50:56

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