Au Mic

Query : Au Mic

Basic data :
V* AU Mic -- Low-mass star (M<1solMass)
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:
* (2014AJ,CD,...), PM* (2013MNRAS,NLTT,...), X (2015A&A,1AXG,...), IR (AKARI,IRAS,...), ** (**,CCDM,...), V* (ASAS,1SWASP,...), UV (2EUVE,EUVE,...), LM* (2019AJ), Er* ([GKL99]), BY* (2017ARep)
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    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) :
20 45 09.5324974119 -31 20 27.237889841 (Optical) [ 0.0173 0.0113 90 ] A 2020yCat.1350....0G
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    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) :
20 42 03.7916989382 -31 31 05.551562626 [ 0.0173 0.0113 90 ]
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] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    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) :
012.6546144900849 -36.8024952537245 [ 0.0173 0.0113 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 :
281.319 -360.148 [0.022 0.019 90] A 2020yCat.1350....0G
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) -4.71 [0.0013] / z(spectroscopic) -0.000016 [0.000000] / cz -4.71 [0.00]
   (Opt) A 2018MNRAS.475.1960F
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):
102.9432 [0.0231] A 2020yCat.1350....0G
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:
M1VeBa1 C 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 (11) :
B 10.05 [~] E ~
V 8.627 [0.052] C 2012AcA....62...67K
R 9.078 [0.06] D 2012yCat.1322....0Z
G 7.843440 [0.002890] C 2020yCat.1350....0G
I 6.593 [0.029] C 2012AcA....62...67K
J 5.436 [0.017] C 2003yCat.2246....0C
H 4.831 [0.016] C 2003yCat.2246....0C
K 4.529 [~] D 2010PASP..122..885S
g 9.579 [0.05] D 2012yCat.1322....0Z
r 8.636 [0.09] D 2012yCat.1322....0Z
i 7.355 [0.14] E 2012yCat.1322....0Z
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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sedIcon
within 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!).
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2
The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 2
: 497 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (57) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NLTT 49807 GCRV 12995 PPM 300560 V* AU Mic
** LDS 720A GEN# +1.00197481 RBS 1695 WDS J20452-3120A
AKARI-IRC-V1 J2045097-312029 GJ 803 2RE J2045-312 WEB 18541
ASAS J204510-3120.4 HD 197481 2RE J204510-312000 WISEA J204509.75-312030.9
ASAS J204509-3120.3 HIC 102409 RE J2045-312 WISE J204509.76-312030.9
1AXG J204508-3119 HIP 102409 RE J204509-312004 Zkh 310
CCDM J20451-3122A IDS 20390-3142 A RX J2045.2-3120 [FS2003] 1089
CD-31 17815 IRAS 20420-3131 1RXS J204509.4-312023 [GKL99] 394
Ci 20 1225 IRAS F20420-3131 SAO 212402 [L91b] 329
CPC 17 11323 LTT 8214 1SWASP J204509.52-312027.2 [RHG95] 3241
CPD-31 6335 2MASS J20450949-3120266 TIC 441420236 Gaia EDR3 6794047652729201024
2E 4416 MCC 824 TYC 7457-641-1 Gaia DR2 6794047652729201024
2E 2042.0-3131 PLX 4939 UBV 17963
2EUVE J2045-31.3 PLX 4939.00 UCAC4 294-224065
EUVE J2045-31.3 PM J20451-3120 UGP 505

References (1002 between 1850 and 2022) (Total 1002)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

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Collections of Measurements


velocities : 12    distance : 4    Fe_H : 4    V* : 4    diameter : 2    ROT : 4    PLX : 5    PM : 6    MK : 14   

   

Observing logs


ISO : 3    herschel : 6    IUE : 149    XMM : 1   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Au Mic

Link by name to the catalogue in VizieR :

NLTT 49807 AKARI-IRC-V1 J2045097-312029 CCDM J20451-3122A CD-31 17815 CPD-31 6335
2E 4416 EUVE J2045-31.3 GJ 803 HD 197481 HIC 102409
HIP 102409 IRAS 20420-3131 IRAS F20420-3131 2MASS J20450949-3120266 PLX 4939
PPM 300560 2RE J2045-312 2RE J204510-312000 1RXS J204509.4-312023 SAO 212402
TYC 7457-641-1 UCAC4 294-224065 V* AU Mic WDS J20452-3120A WISEA J204509.75-312030.9
WISE J204509.76-312030.9 [GKL99] 394 [L91b] 329 Gaia EDR3 6794047652729201024 Gaia DR2 6794047652729201024

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Annotations :
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Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2022.05.26-22:17:42

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