2008ApJ...685L.133M

Query : 2008ApJ...685L.133M

2008ApJ...685L.133M - Astrophys. J., 685, L133-L136 (2008/October-1)

Constraining the surface inhomogeneity and settling times of metals on accreting white dwarfs.

MONTGOMERY M.H., THOMPSON S.E. and VON HIPPEL T.

Abstract (from CDS):

Due to the short settling times of metals in DA white dwarf atmospheres, any white dwarfs with photospheric metals must be actively accreting. It is therefore natural to expect that the metals may not be deposited uniformly on the surface of the star. We present calculations showing how the temperature variations associated with white dwarf pulsations lead to an observable diagnostic of the surface metal distribution, and we show what constraints current data sets are able to provide. We also investigate the effect that time-variable accretion has on the metal abundances of different species, and we show how this can lead to constraints on the gravitational settling times.

Abstract Copyright: ∼

Journal keyword(s): Accretion, Accretion Disks - Convection - Diffusion - Stars: Oscillations - Stars: Variables: Other - 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 - 2026 		#notes
1 V* ZZ Psc WD* 23 28 47.6365087803 +05 14 54.235051503   13.217   13.106   DA4.1 536 0

Query : 2008ApJ...685L.133M

Basic data :
V* ZZ Psc -- White Dwarf
Other object types: otypes_help 		* (CNS5,CSI,...), PM* (2016ApJS,G,...), WD* (1965ApJ,EGGR,...), WD? (2018MNRAS), MIR (WISEA,WISE), Opt (LAMOST,SDSS), Pu* (2017ARep), V* (V*), UV (PG), NIR (2MASS)
ICRS coord. (ep=J2000) : 		23 28 47.6365087803 +05 14 54.235051503 (Optical) [ 0.0217 0.0173 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		23 26 16.0473094320 +04 58 35.358547121 [ 0.0217 0.0173 90 ]
Gal coord. (ep=J2000) : 		088.1711895358976 -51.9567815220531 [ 0.0217 0.0173 90 ]
Proper motions mas/yr : 		-398.246 -266.744 [0.032 0.020 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 41.6 [0.7] / z(spectroscopic) 0.000139 [0.000002] / cz 41.60 [0.70]
   (Opt) A 2020A&A...638A.131N
Parallaxes (mas): 		57.0620 [0.0251] A 2020yCat.1350....0G
Spectral type: 		DA4.1 C 2011ApJ...743..138G
Fluxes (11) :
B 13.217 [0.01] D 2012yCat.1322....0Z
R 13.106 [0.13] E 2012yCat.1322....0Z
G 13.062395 [0.003521] C 2020yCat.1350....0G
J 13.132 [0.029] C 2003yCat.2246....0C
H 13.075 [0.022] C 2003yCat.2246....0C
K 12.689 [0.029] C 2003yCat.2246....0C
u (AB) 13.449 [0.003] B 2020ApJS..249....3A
g (AB) 13.054 [0.007] B 2020ApJS..249....3A
r (AB) 13.123 [0.002] B 2020ApJS..249....3A
i (AB) 13.753 [0.003] B 2020ApJS..249....3A
z (AB) 13.598 [0.003] B 2020ApJS..249....3A
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Identifiers (35) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

EGGR 159 LHS 5405 PM J23287+0514 V* ZZ Psc
CNS5 5786 LSPM J2328+0514 SDSS J232847.40+051451.9 WD 2326+049
CSI+04-23263 LTT 16907 SV* SVS 2123 WD 2326+04
GEN# +9.80029038 2MASS J23284760+0514540 TIC 422526868 WISEA J232847.35+051451.4
G 29-38A NLTT 56992 UBV M 42777 WISE J232847.35+051451.5
G 29-38 PB 5398 UBV 20113 [RRW93] Pn24l-5
GJ 895.2 PG 2326+049 UCAC4 477-130935 Gaia DR3 2660358032257156736
JP11 5933 PLX 5685.01 USNO-B1.0 0952-00593489 Gaia DR2 2660358032257156736
LAMOST J232847.62+051454.2 PM 23263+0458 USNO 99

References (536 between 1850 and 2026) (Total 536)
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 Description of Measurements

Velocities : 3    Distance : 6    Rot : 1    Fe/H : 11    Plx : 3    PM : 10    SpT : 15   

   

Observing logs
Herschel : 6    ISO : 5    IUE : 13   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* ZZ Psc

Link by name to the catalogue in VizieR :

G 29-38A G 29-38 GJ 895.2 LHS 5405 LSPM J2328+0514
2MASS J23284760+0514540 NLTT 56992 PB 5398 PG 2326+049 SDSS J232847.40+051451.9
UCAC4 477-130935 USNO-B1.0 0952-00593489 V* ZZ Psc WD 2326+049 WD 2326+04
WISEA J232847.35+051451.4 WISE J232847.35+051451.5 Gaia DR3 2660358032257156736 Gaia DR2 2660358032257156736

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