2023RNAAS...7..156B


Query : 2023RNAAS...7..156B

2023RNAAS...7..156B - Research Notes of the AAS, 7, 156 (2023/July-0)

Anomalous Flux Event in the TESS Sector 43 Light Curve of the White Dwarf Photometric Standard HZ 4 was Caused by a Passing Asteroid.

BELL K.J., ARDILA D. and FRYMIRE A.

Abstract (from CDS):

Frymire & Ardila reported an anomalous flux variation in the Transiting Exoplanet Survey Satellite (TESS) Sector 43 light curve of the white dwarf HZ 4. We show that this flux variation was caused by the main-belt asteroid 4382 Stravinsky traversing the nearby TESS pixels, and it is therefore not a cause for concern regarding the continued use of HZ 4 as a photometric standard star.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Astronomy data analysis - Asteroids - Photometric standard stars - Small Solar System bodies - White dwarf 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 - 2026
#notes
1 HZ 4 WD* 03 55 21.9881513952 +09 47 18.135008592 13.917 14.592 14.506 14.58 14.642 DA3.4 220 0

Query : 2023RNAAS...7..156B

Basic data :
HZ 4 -- White Dwarf
Other object types:
otypes_help
* (Cl*,CSI,...), WD* (1947ApJ,EGGR,...), PM* (2018yCat,LSPM,...), WD? (2018MNRAS), blu (FB,HZ), UV (GALEX,KUV), NIR (2MASS), Opt (LAMOST)
ICRS coord. (ep=J2000) :
03 55 21.9881513952 +09 47 18.135008592 (Optical) [ 0.0286 0.0195 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) :
03 52 37.9058572805 +09 38 34.709930541 [ 0.0286 0.0195 90 ]
Gal coord. (ep=J2000) :
179.7422041015263 -32.1347780912747 [ 0.0286 0.0195 90 ]
Proper motions mas/yr :
173.274 -5.569 [0.035 0.025 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz :
V(km/s) 82.1 [0.8] / z(spectroscopic) 0.000274 [0.000003] / cz 82.11 [0.80]
   (Opt) A 2020A&A...638A.131N
Parallaxes (mas):
28.5873 [0.0371] A 2020yCat.1350....0G
Spectral type:
DA3.4 C 2011ApJ...743..138G
Fluxes (9) :
U 13.917 [~] D 2007AJ....133..768L
B 14.592 [~] D 2007AJ....133..768L
V 14.506 [~] D 2007AJ....133..768L
R 14.58 [~] D 2007AJ....133..768L
G 14.547840 [0.002864] C 2020yCat.1350....0G
I 14.642 [~] D 2007AJ....133..768L
J 14.831 [0.041] C 2003yCat.2246....0C
H 14.866 [0.059] C 2003yCat.2246....0C
K 15.061 [0.099] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 3392 Display criteria :

Identifiers (26) :
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EGGR 26 GEN# +5.20252001 LSPM J0355+0947 USNO-B1.0 0997-00053517
Cl* Melotte 25 HZ 4 GEN# +5.20257041 2MASS J03552198+0947180 WD 0352+09
Cl* Melotte 25 LEID 1 GSC 00659-00027 PM J03553+0947 WD 0352+096
CSI+09-03521 HG 7-41 TIC 415339071 Gaia DR3 3302846072717868416
FB 32 HZ 4 UBV M 41451 Gaia DR2 3302846072717868416
GALEX J035522.0+094718 KUV 03526+0939 UBV 3825
GCRV 54606 LAMOST J035521.89+094718.2 UBV 3811

References (220 between 1850 and 2026) (Total 220)
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 : 8    Fe/H : 8    Plx : 3    PM : 4    SpT : 12   

   

Observing logs
ISO : 2    IUE : 6    XMM : 1   

   


External archives :

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

Link by name to the catalogue in VizieR :

GALEX J035522.0+094718 GSC 00659-00027 LSPM J0355+0947 2MASS J03552198+0947180 USNO-B1.0 0997-00053517
WD 0352+09 WD 0352+096 Gaia DR3 3302846072717868416 Gaia DR2 3302846072717868416

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