1997A&AS..122..123K


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.26CEST04:19:36

1997A&AS..122..123K - Astron. Astrophys., Suppl. Ser., 122, 123-129 (1997/April-1)

TT Arietis: Photometric variability from 1985 to 1994.

KRAICHEVA Z., STANISHEV V., ILIEV L., ANTOV A. and GENKOV V.

Abstract (from CDS):

Result. of photoelectric observations of TT Ari during the 1985-1994 interval are presented. Observations were carried out at the Rozhen and Belogradchik observatories as part of our programme for the study of anti-dwarf novae. The long-term light curve in the standard UBV system is constructed and peculiarities of the long-term behaviour of the star in this time interval are discussed. 21 moments of maxima and 14 moments of minima are added to the list of known maxima and minima of 3.2-hour modulations. The period of 3.2-hour modulations during the 1987/1988, 1989/1990 and 1990/1991 seasons is determined. In our 29 observing runs we searched for 20-min quasi-periodic variations, which were detected in 25 of them. Our results show that in 1989, the 20-min modulation mean period reached a local maximum of 19.45-min and declined afterwards. The mean brightness variability analysis during the aforementioned seasons confirmed the reliability of the 3.8d period suspected by Semeniuk et al. (1987AcA....37..197S).

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: individual: TT Ari - stars: cataclysmic variables - X-ray: stars

Status at CDS:  

Simbad objects: 1

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Number of rows : 1

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* TT Ari No* 02 06 53.0797667881 +15 17 41.849759579   10.73 10.20     Bep: 417 0

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2020.05.26CEST04:19:36

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


Basic data :
V* TT Ari -- Nova
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:
NL* (), X (1AXG,1E,...), * (BD,PLX,...), V* (ASAS,V*,...), SB* (SBC7,SBC9), No* (Ref), CV* (Ref), ** (Ref), Em* (EM*), IR (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] : 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) :
02 06 53.0797667881 +15 17 41.849759579 (Optical) [ 0.0624 0.0549 90 ] A 2018yCat.1345....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) :
02 04 09.9223532348 +15 03 27.437182292 [ 0.0624 0.0549 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) :
148.5272861387081 -43.7953081188565 [ 0.0624 0.0549 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 :
-9.570 -23.640 [0.130 0.110 90] A 2018yCat.1345....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) 34.0 [~] / z(~) 0.000113 [~] / cz 34.00 [~]
   E 1995A&AS..114..269D
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):
3.8840 [0.0698] A 2018yCat.1345....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:
Bep: E ~
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 (6) :
B 10.73 [0.05] D 2000A&A...355L..27H
V 10.20 [~] C 2002yCat.2237....0D
G 10.9249 [0.0125] C 2018yCat.1345....0G
J 10.998 [0.022] C 2003yCat.2246....0C
H 10.908 [0.023] C 2003yCat.2246....0C
K 10.878 [0.021] C 2003yCat.2246....0C
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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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (25) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

BD+14 341 1ES 0204+15.0 SBC7 76 [ZEH2003] RX J0206.8+1517 1
ASAS J020653+1517.7 2MASS J02065308+1517420 SBC9 110 AAVSO 0201+14
1AXG J020654+1517 PBC J0207.2+1515 TYC 1207-1606-1 Gaia DR1 78395041621531136
1E 0204.1+1503 PLX 434.01 UCAC2 37117604 Gaia DR2 78395045917118976
2E 522 RBS 280 V* TT Ari
2E 0204.1+1503 RX J0206.8+1517 WEB 2070
EM* StHA 14 1RXS J020653.0+151744 XSS J02074+1519

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References (417 between 1850 and 2020) (Total 417)
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


distance : 1    velocities : 1    PM : 1    PLX : 3   

   

Observing logs


IUE : 70   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* TT Ari

Link by name to the catalogue in VizieR :

BD+14 341 2E 522 2MASS J02065308+1517420 1RXS J020653.0+151744 TYC 1207-1606-1
UCAC2 37117604 V* TT Ari Gaia DR1 78395041621531136 Gaia DR2 78395045917118976

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2020.05.26-04:19:37

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