CDS

1998A&AS..130..109T

Query : 1998A&AS..130..109T

1998A&AS..130..109T - Astron. Astrophys., Suppl. Ser., 130, 109-115 (1998/May-2)

BVRcIc monitoring of ON 231 during the great outburst in 1994-1997.

TOSTI G., FIORUCCI M., LUCIANI M., RIZZI N., VILLATA M., RAITERI C.M., DE FRANCESCO G., LANTERI L., CHIABERGE M., PEILA A., CAVALLONE M., SOBRITO G., MAESANO M., MASSARO E., MONTAGNI F., NESCI R., GHISELLINI G., TAKALO L.O., SILLANPAEAE A., KATAJAINEN S., HEINAEMAEKI P., NILSSON K. and PURSIMO T.

Abstract (from CDS):

We present the most continuous data base of optical multiband data ever published on the BL Lacertae object ON 231 (W Com). The data have been collected during an intensive and coordinated BVRcIc monitoring campaign carried out in the period from March 1994 to March 1997. During our campaign, the source brightness was at the highest level ever observed. The light curve shows a complex structure, characterized by the presence of three major outbursts having the observed maxima in March 1995, February 1996, and January 1997, when ON 231 reached its historical maximum (B≃14.2). Variability on time scales from a few hours up to a month have frequently been observed and the light curve seems to be the superposition of many flares with different amplitudes and time scales. The broad-band optical spectral energy distribution is characterized by a spectral slope which correlates with the flux level. In particular, the higher is the flux the flatter is the spectrum.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: general - individual: ON 231

VizieR on-line data: <Available at CDS (J/A+AS/130/109): table2.dat>

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 - 2023 		#notes
1 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 846 1

Query : 1998A&AS..130..109T

Basic data :
7C 1219+2830 -- BL Lac
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: 		Rad (2020A&A,7C,...), gam (1AGL,2EG,...), BLL (2010ApJ,[VV2000b],...), Bla (2012ApJ,[DGT2001],...), X (2009A&A,2E,...), QSO (2016A&A,QSO,...), V* (2018AJ,AN,...), AGN (2011ApJ,CGRaBS), Opt (ATO,LAMOST,...), MIR (WISEA,WISE), GiC (CAIRNS), G (2021AJ), * (Gaia), NIR (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) : 		12 21 31.6904439888 +28 13 58.500308172 (Optical) [ 0.0342 0.0309 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) : 		12 19 01.1212085451 +28 30 36.649334150 [ 0.0342 0.0309 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) : 		201.7352530890140 +83.2880250079280 [ 0.0342 0.0309 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 : 		0.079 -0.024 [0.039 0.039 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) 29266 [48] / z(spectroscopic) 0.10289 [0.00016] / cz 30845.6 [48.0]
   C 2009ApJS..182..543A
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 (12) :
B 16.81 [~] D 2010A&A...518A..10V
V 16.11 [~] D 2010A&A...518A..10V
R 14.24 [~] D 2008ApJS..175...97H
G 15.677232 [0.014738] C 2020yCat.1350....0G
J 12.478 [0.026] C 2003yCat.2246....0C
H 11.742 [0.035] C 2003yCat.2246....0C
K 10.972 [0.021] C 2003yCat.2246....0C
u (AB) 15.877 [0.005] B 2009ApJS..182..543A
g (AB) 15.379 [0.003] B 2009ApJS..182..543A
r (AB) 15.045 [0.004] B 2009ApJS..182..543A
i (AB) 14.771 [0.004] B 2009ApJS..182..543A
z (AB) 14.568 [0.005] B 2009ApJS..182..543A
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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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!). sed-help-icon
Some important notes on this object about identifications and objects associations.
notes:

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (90) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

7C 121901.4+283038 4FGL J1221.5+2814 QSO B1219+285 [ATZ98] D115
1AGL J1222+2851 1FHL J1221.6+2814 RFC J1221+2813 [CRJ2004] J1221.5+2813
AN 10.1916 3FHL J1221.5+2813 RGB J1221+282 [DGT2001] B1219+285
ATO J185.3820+28.2329 FIRST J122131.6+281358 RGB J1221.5+2813 [GGR94] 1219+285
B2 1219+28 GB6 B1219+2830 RORF 1219+285 [HB93] 1219+285
B2.2 1219+28 87GB 121900.8+283039 RX J1221.5+2814 [IN88] 1219+285
BWE 1219+2830 GeV J1222+2837 RX J1221.5+2813 [MGL2009] BZB J1221+2813
7C 1219+2830 GLEAM J122131+281405 1RXS J122131.1+281402 [MML2015] 5BZB J1221+2813
CAIRNS J122131.69+281358.5 ICRF J122131.6+281358 S3 1219+28 [P82] 1219+285
CGRaBS J1221+2813 IERS B1219+285 SDSS J122131.69+281358.4 [VV2000b] J122131.7+281358
CLASS J122131.6935+281358.496 INTREF 489 TeV J1221+282 [VV2003b] J122131.7+281358
CRATES J122131+281357 IVS B1219+285 TIC 285095960 [VV2006b] J122131.7+281358
2E 2673 JVAS J1221+2813 TXS 1219+285 [VV2010b] J122131.7+281358
2E 1219.0+2830 JVAS B1219+285 V* W Com [VV98b] J122131.7+281358
2EG J1222+2821 LAMOST J122131.68+281358.5 VIPS J12215+2813 [VYP98] 1219+285
3EG J1222+2841 LINEAR 3472523 VIPS 550 [W72] 1219+28
EGR J1222+2845 MASIV J1221+2813 VRO 28.12.02 [ZEH2003] RX J1221.5+2814 2
2EGS J1222+2821 2MASS J12213168+2813585 WB 1219+2830 AAVSO 1216+28
1ES 1218+28.5 MITG J122132+2814 WISEA J122131.68+281358.4 Gaia DR3 4010020203303760640
0FGL J1221.7+2814 NRAO 1219+28 WISE J122131.69+281358.5 Gaia DR1 4010020199008338176
1FGL J1221.5+2814 NVSS J122131+281358 WISE J122131.68+281358.4 Gaia DR2 4010020203303760640
2FGL J1221.4+2814 OHIO N 231 2XMM J122131.6+281358
3FGL J1221.4+2814 QSO B1219+28 9Y-MST J1221+2813

References (846 between 1850 and 2023) (Total 846)
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 : 5    V* : 1    PM : 3   

   

Observing logs


IUE : 2   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : 7C 1219+2830

Link by name to the catalogue in VizieR :

BWE 1219+2830 2E 2673 3EG J1222+2841 FIRST J122131.6+281358 IERS B1219+285
2MASS J12213168+2813585 MITG J122132+2814 NVSS J122131+281358 1RXS J122131.1+281402 SDSS J122131.69+281358.4
V* W Com WISEA J122131.68+281358.4 WISE J122131.69+281358.5 WISE J122131.68+281358.4 Gaia DR3 4010020203303760640
Gaia DR1 4010020199008338176 Gaia DR2 4010020203303760640

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2023.09.26-05:08:30

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