2010ApJS..191..247T

Query : 2010ApJS..191..247T

2010ApJS..191..247T - Astrophys. J., Suppl. Ser., 191, 247-253 (2010/December-0)

Fast calculation of the Lomb-Scargle periodogram using graphics processing units.

TOWNSEND R.H.D.

Abstract (from CDS):

I introduce a new code for fast calculation of the Lomb-Scargle periodogram that leverages the computing power of graphics processing units (GPUs). After establishing a background to the newly emergent field of GPU computing, I discuss the code design and narrate key parts of its source. Benchmarking calculations indicate no significant differences in accuracy compared to an equivalent CPU-based code. However, the differences in performance are pronounced; running on a low-end GPU, the code can match eight CPU cores, and on a high-end GPU it is faster by a factor approaching 30. Applications of the code include analysis of long photometric time series obtained by ongoing satellite missions and upcoming ground-based monitoring facilities, and Monte Carlo simulation of periodogram statistical properties.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - methods: numerical - techniques: photometric - stars: oscillations

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 HD 180642 bC* 19 17 14.8038514896 +01 03 33.904495728 7.83 8.47 8.29     B1.5II-III 107 0

Query : 2010ApJS..191..247T

Basic data :
HD 180642 -- beta Cep Variable
Other object types: otypes_help 		* (2022AJ,HD,...), V* (ASAS,V*), bC* (2020AJ), Pu* (2012A&A), UV (TD1), NIR (2MASS)
ICRS coord. (ep=J2000) : 		19 17 14.8038514896 +01 03 33.904495728 (Optical) [ 0.0232 0.0217 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		19 14 42.1416486492 +00 58 07.853120134 [ 0.0232 0.0217 90 ]
Gal coord. (ep=J2000) : 		036.8294910279633 -05.2535850250374 [ 0.0232 0.0217 90 ]
Proper motions mas/yr : 		-0.293 -3.117 [0.026 0.022 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -22.456301 [0.261623] / z(spectroscopic) -0.000075 [0.000001] / cz -22.46 [0.26]
   (NIR) A 2020AJ....160..120J
Parallaxes (mas): 		0.7776 [0.0277] A 2020yCat.1350....0G
Spectral type: 		B1.5II-III C 1971ApJS...23..257W
Fluxes (7) :
U 7.83 [~] D 2003AJ....125.2531R
B 8.47 [~] E ~
V 8.29 [~] E ~
G 8.204776 [0.003272] C 2020yCat.1350....0G
J 7.816 [0.023] C 2003yCat.2246....0C
H 7.825 [0.042] C 2003yCat.2246....0C
K 7.792 [0.021] C 2003yCat.2246....0C
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Identifiers (30) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 180642 GEN# +1.00180642 PPM 167554 WEB 16542
AG+00 2325 GSC 00464-02054 SAO 124467 YZ 0 4826
ALS 10235 HGAM 744 TD1 24308 [HFE83] 1275
AP J19171479+0103339 HIC 94793 TIC 175760664 Gaia DR2 4264667749172648448
ASAS J191715+0103.6 HIP 94793 TYC 464-2054-1 Gaia DR3 4264667749172648448
BD+00 4159 KK 881-103 UBV M 23633 Gaia DR1 4264667744838000768
CoRoT 8393 LS IV +00 16 uvby98 100180642
GCRV 11741 2MASS J19171479+0103339 V* V1449 Aql

References (107 between 1850 and 2026) (Total 107)
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 : 7    Distance : 2    Var : 2    Rot : 2    Fe/H : 1    Plx : 5    PM : 4    SpT : 5   

   

External archives :

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

Link by name to the catalogue in VizieR :

HD 180642 AG+00 2325 ALS 10235 AP J19171479+0103339 BD+00 4159
CoRoT 8393 GSC 00464-02054 HIC 94793 HIP 94793 LS IV +00 16
2MASS J19171479+0103339 PPM 167554 SAO 124467 TD1 24308 TYC 464-2054-1
uvby98 100180642 V* V1449 Aql Gaia DR2 4264667749172648448 Gaia DR3 4264667749172648448 Gaia DR1 4264667744838000768

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