Algol

Query : Algol
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.13CET15:49:53

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


Basic data :
* bet Per -- Eclipsing binary of Algol 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:
* (*,AG,...), X (1E,2E,...), ** (Ref,**,...), UV (CEL,2EUVE,...), IR (IRAS,IRC,...), SB* (SBC7,SBC9), V* (V*,AAVSO), Al* (Ref)
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 defined epoch and convolved with error on propermotion),
    position angle (in degrees North celestial pole to East)
  • 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) :
03 08 10.1324535 +40 57 20.328013 (Optical) [ 1.21 0.86 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 defined epoch and convolved with error on propermotion),
    position angle (in degrees North celestial pole to East)
  • 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) :
03 04 54.3577816 +40 45 52.366831 [ 71.01 61.01 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 defined epoch and convolved with error on propermotion),
    position angle (in degrees North celestial pole to East)
  • 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) :
148.9765194811 -14.9002644193 [ 1.21 0.86 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 :
2.99 -1.66 [1.42 1.22 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) 4.0 [0.9] / z(~) 0.000013 [0.000003] / cz 4.00 [0.90]
   E 1953GCRV..C......0W
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):
36.27 [1.40] 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:
B8V C 2003AJ....126.2048G
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (incl) : inclination (in units of 15° from 0 to 7)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin):
0.0167 0.0 123 (~) D 2001AJ....122.3466M
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 (9) :
U 1.70 [~] C 2002yCat.2237....0D
B 2.07 [~] C 2002yCat.2237....0D
V 2.12 [~] C 2002yCat.2237....0D
R 2.08 [~] C 2002yCat.2237....0D
I 2.11 [~] C 2002yCat.2237....0D
G 4.3404 [0.1275] C 2018yCat.1345....0G
J 2.16 [~] C 2002yCat.2237....0D
H 1.95 [0.17] D 2003yCat.2246....0C
K 2.08 [~] C 2002yCat.2237....0D
SIMBAD with radius arcmin
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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:

  • Triple star : components * bet Per A = WDS Aa, * bet Per B = WDS Ab, and * bet Per C = WDS Aa2, are not separated in Simbad.
  • Identifiers CCDM A/B/C, ADS A/B/C, WDS A/B/C, ** BU 526A/B/C, refer to an old visual system where component A is the triple star * bet Per itself; B (UCAC3 262-30190) and C (UCAC3 262-30192) are about 1' away.


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (75) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* bet Per EUVE J0308+40.9 N30 636 SBC7 113
* bet Per FK5 111 NAME Algol SBC9 158
* 26 Per GAT 1267 NAME Algol B SBC9 157
* bet Per B GC 3733 NAME Algol C SKY# 4684
* bet Per C GCRV 1731 NAME Algol A TD1 1905
* bet Per A GEN# +1.00019356 PLX 646 TYC 2851-2168-1
** LAB 2 GJ 9110 PMC 90-93 80 UBV 21464
** BU 526A GJ 9110 A PMSC 03017+4034A UBV M 9337
ADS 2362 A HD 19356 PPM 45864 WDS J03082+4057A
AG+40 360 H 0307+40 RAFGL 443 WDS J03082+4057Aa,Ab
BD+40 673 HIC 14576 2RE J0308+405 WEB 2833
CCDM J03082+4057A HIP 14576 2RE J030809+405736 WEB 2834
CEL 301 HR 936 RE J030810+405734 1XRS 03049+407
CSI+40 673 1 IDS 03017+4034 A RE J0308+405 XSS J03089+4101
1E 0304.8+4045 IRAS 03048+4045 ROT 417 [B10] 708
2E 724 IRC +40055 RX J0308.1+4057 [BM83] X0304+407
2E 0304.9+4045 JP11 752 1RXS J030810.0+405727 AAVSO 0301+40
1ES 0304+40.7 2MASS J03081012+4057204 SAO 38592 Gaia DR2 239863001382455424
2EUVE J0308+40.9 2MAXI J0308+410 SBC7 114

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References (1116 between 1850 and 2019) (Total 1116)
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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Collections of Measurements


diameter : 1    velocities : 16    ROT : 3    PM : 5    Fe_H : 2    PLX : 2    MK : 12    V* : 2   

   

Observing logs


ISO : 4    XMM : 1    IUE : 94   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Algol

Link by name to the catalogue in VizieR :

V* bet Per AG+40 360 BD+40 673 CCDM J03082+4057A CEL 301
2E 724 EUVE J0308+40.9 FK5 111 GJ 9110 GJ 9110 A
HD 19356 HIC 14576 HIP 14576 HR 936 IRAS 03048+4045
IRC +40055 2MASS J03081012+4057204 PLX 646 PPM 45864 RAFGL 443
2RE J0308+405 2RE J030809+405736 1RXS J030810.0+405727 SAO 38592 TD1 1905
TYC 2851-2168-1 WDS J03082+4057A WDS J03082+4057Aa,Ab Gaia DR2 239863001382455424

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

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2018.12.13-15:49:53

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