CDS

2001A&A...372..557G

Query : 2001A&A...372..557G

2001A&A...372..557G - Astronomy and Astrophysics, volume 372, 557-562 (2001/6-3)

A model for the optical high state light curve of AM Herculis.

GAENSICKE B.T., FISCHER A., SILVOTTI R. and DE MARTINO D.

Abstract (from CDS):

We present a simple quantitative model that can describe the photometric B and V band light curves of AM Herculis obtained during a high state. The double-humped shape of the V band light curve is dominated by cyclotron emission from a region at the main accreting pole with an area of ∼5x1016cm2 and sustaining an inflow of ∼0.06g/cm2/s. The almost unmodulated B band is dominated by emission from the accretion stream. The contribution of the heated white dwarf to the optical emission is small in the B band, but comparable to that of the accretion stream in the V band. The emission of the secondary star is negligible both in B and in V.

Abstract Copyright: ∼

Journal keyword(s): accretion - novae, cataclysmic variables - stars: binaries close - stars: individual: AM Her - stars: white dwarfs

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 V* AM Her CV* 18 16 13.2546541781 +49 52 04.759861155   15.124 14.808 13.525   M4.5-5Ve 956 0

Query : 2001A&A...372..557G

Basic data :
V* AM Her -- Cataclysmic Binary
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: 		X (2012ApJS,4U,...), CV* (2012ApJ), * (PLX,UCAC4,...), V* (AN,ROTSE1,...), UV (2012ApJS,2EUVE,...), PM* (2018yCat,PM), MIR (WISEA,WISE), dS* (2000AJ), SB* (SBC9), Er* ([GKL99]), Em* (2020A&A), gam (INTREF), NIR (2MASS), Opt (LAMOST), ev (ZTF)
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) : 		18 16 13.2546541781 +49 52 04.759861155 (Optical) [ 0.0162 0.0173 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) : 		18 14 58.7450395813 +49 50 55.145937330 [ 0.0162 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) : 		077.8648120482383 +25.8762501226603 [ 0.0162 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 : 		-45.957 28.046 [0.034 0.034 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) -19.0 [~] / z(~) -0.000063 [~] / cz -19.00 [~]
   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): 		11.3953 [0.0179] 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: 		M4.5-5Ve C 1981ApJ...246..919L
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 (10) :
B 15.124 [0.35] D 2012yCat.1322....0Z
V 14.808 [0.37] D 2012yCat.1322....0Z
R 13.525 [0.12] E 2012yCat.1322....0Z
G 13.5800 [0.0560] C 2018yCat.1345....0G
J 11.703 [0.023] C 2003yCat.2246....0C
H 11.195 [0.026] C 2003yCat.2246....0C
K 11.002 [0.022] C 2003yCat.2246....0C
g 14.925 [0.35] D 2012yCat.1322....0Z
r 14.624 [0.46] D 2012yCat.1322....0Z
i 14.167 [0.42] D 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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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!). sed-help-icon

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (47) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

4U 1813+50 H 1814+498 SBC9 1041 2XMM J181613.3+495203
2A 1815+500 H 1816+49 SWIFT J1816.1+4951 2XMMi J181613.3+495203
3A 1815+498 INTREF 895 TIC 366122523 XSS J18164+5004
AN 28.1923 LAMOST J181613.21+495205.2 2U 1808+50 ZTF18aamigoo
1AXG J181611+4952 2MASS J18161324+4952048 3U 1809+50 [BAG2012] 274.0939+49.8605
1E 1815.0+4948 2MAXI J1816+498 4U 1814+50 [BM83] X1814+498
2E 4051 PBC J1816.0+4952 UCAC4 700-061864 [FS2003] 0963
2E 1814.9+4951 PLX 4200.04 USNO 551 [GKL99] 352
1ES 1814+49.8 PM J18162+4952 V* AM Her AAVSO 1813+49
2EUVE J1816+49.8 ROTSE1 J181613.28+495205.0 WEB 15248 Gaia DR3 2123837555230207744
EUVE J1816+49.8 RX J1816.2+4952 WISEA J181613.20+495205.0 Gaia DR2 2123837555230207744
1H 1814+498 1RXS J181613.8+495203 WISE J181613.20+495205.0

References (956 between 1850 and 2023) (Total 956)
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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                Reference summaries :

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Collections of Measurements


velocities : 1    V* : 5    distance : 2    PLX : 3    PM : 2    MK : 2   

   

Observing logs


herschel : 2    ISO : 12    IUE : 149   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* AM Her

Link by name to the catalogue in VizieR :

2E 4051 EUVE J1816+49.8 2MASS J18161324+4952048 1RXS J181613.8+495203 UCAC4 700-061864
V* AM Her WISEA J181613.20+495205.0 WISE J181613.20+495205.0 [GKL99] 352 Gaia DR3 2123837555230207744
Gaia DR2 2123837555230207744

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2023.09.23-17:24:31

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