2001A&A...365..128P


Query : 2001A&A...365..128P

2001A&A...365..128P - Astronomy and Astrophysics, volume 365, 128-143 (2001/1-2)

Spectral imaging maps of AR Lacertae. I. Results from IUE observations in 1994 October.

PAGANO I., RODONO M., LINSKY J.L., NEFF J.E., WALTER F.M., KOVARI Z. and MATTHEWS L.D.

Abstract (from CDS):

In October 1994 the RS CVn eclipsing binary AR Lacertae was monitored by IUE during two orbital cycles. We have used 59 low resolution spectra, acquired in the range 1150-1950Å, to derive light curves for emission lines formed at different temperatures between about 10000 and 200000K and to study the flare signatures versus temperature of line formation. We have analyzed a sequence of 59 high resolution MgII k line profiles using multi-Gaussian fits (the spectral imaging technique) to derive information of the spatial structure of the chromospheres of both stars in the AR Lac system. We discuss the quiet chromospheric emission from both stars, and we show that enhanced MgII emission is present in extended structures corotating with the K0 IV star and close to the system center-of-mass. We also report on evidence for absorbing structures toward both the stars. This study of AR Lac used the new orbital elements of Marino et al. (1998IBVS.4599....1M) and spectra reduced and calibrated with NEWSIPS. A comparison between fluxes derived from the analyzed NEWSIPS spectra and from IUESIPS spectra is provided.

Abstract Copyright:

Journal keyword(s): line: profiles - stars: activity - stars: binaries: general - stars: chromospheres - stars: individual: AR Lac - ultraviolet: stars

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 - 2022
#notes
1 V* AR Lac RS* 22 08 40.8182089680 +45 44 32.107863120 7.09 6.83 6.11     K0IVe+G5IV 704 0

Query : 2001A&A...365..128P

Basic data :
V* AR Lac -- RS CVn Variable
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:
RS* (), * (HD,AG,...), X (2E,1ES,...), SB* (CABS,CCABS,...), V* (AN,V*,...), UV (2EUVE,EUVE,...), ** (**,WDS), Rad (RGB,[BSF97]), IR (IRAS,2MASS), Em* ([KW97])
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) :
22 08 40.8182089680 +45 44 32.107863120 (Optical) [ 0.0175 0.0173 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) :
22 06 39.4296829687 +45 29 45.677892502 [ 0.0175 0.0173 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) :
095.5569998967437 -08.3014772048019 [ 0.0175 0.0173 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 :
-52.310 46.931 [0.021 0.020 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) -33.84 [0.26] / z(~) -0.000113 [0.000001] / cz -33.84 [0.26]
   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):
23.5246 [0.0228] 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:
K0IVe+G5IV C 1949ApJ...109..231J
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 (7) :
U 7.09 [~] C 2002yCat.2237....0D
B 6.83 [~] C 2002yCat.2237....0D
V 6.11 [~] C 2002yCat.2237....0D
G 5.910741 [0.003517] C 2020yCat.1350....0G
J 4.80 [~] C 2002yCat.2237....0D
H 4.329 [0.036] C 2003yCat.2246....0C
K 4.270 [0.020] C 2003yCat.2246....0C
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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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 ) :

: 1 : 768 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (52) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 210334 EUVE J2208+45.7 2RE J220841+454439 TYC 3606-784-1
** YSC 15 GC 30985 2RE J2208+454 UBV M 26166
AG+45 1977 GCRV 13917 RE J2208+454 uvby98 100210334
AGASC 472651904 GEN# +1.00210334 RE J220839+454440 V* AR Lac
AGKR 19812 GSC 03606-00784 RGB J2208+457 WDS J22087+4545AB
AN 126.1907 1H 2207+455 RX J2208.6+4544 WEB 19641
BD+45 3813 HIC 109303 1RXS J220840.9+454432 [BSF97] J220840.84+454431.8
CABS 191 HIP 109303 SAO 51684 [FS2003] 1148
CCABS 155 HR 8448 SBC7 898 [KW97] 61-36
2E 4573 IRAS 22066+4529 SBC9 1355 AAVSO 2204+45
2E 2206.6+4529 2MASS J22084080+4544320 SKY# 42193 Gaia EDR3 1962909425622345728
1ES 2206+45.5 N30 4880 SV* HV 2980 Gaia DR1 1962909421323660160
2EUVE J2208+45.7 PPM 62525 TIC 420116962 Gaia DR2 1962909425622345728

References (704 between 1850 and 2022) (Total 704)
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


velocities : 7    V* : 1    distance : 2    ROT : 2    Fe_H : 8    PLX : 5    PM : 8    MK : 5   

   

Observing logs


herschel : 3    ISO : 4    IUE : 317    XMM : 1   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* AR Lac

Link by name to the catalogue in VizieR :

HD 210334 AG+45 1977 BD+45 3813 CABS 191 2E 4573
EUVE J2208+45.7 GSC 03606-00784 HIC 109303 HIP 109303 HR 8448
IRAS 22066+4529 2MASS J22084080+4544320 PPM 62525 2RE J220841+454439 2RE J2208+454
1RXS J220840.9+454432 SAO 51684 TYC 3606-784-1 uvby98 100210334 V* AR Lac
WDS J22087+4545AB Gaia EDR3 1962909425622345728 Gaia DR1 1962909421323660160 Gaia DR2 1962909425622345728

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2022.08.10-07:13:28

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