2020ApJ...901..104T

Query : 2020ApJ...901..104T

2020ApJ...901..104T - Astrophys. J., 901, 104-104 (2020/October-1)

New calculations of Stark-broadened profiles for neutral helium lines using computer simulations.

TREMBLAY P., BEAUCHAMP A. and BERGERON P.

Abstract (from CDS):

We present new calculations of Stark-broadened profiles for neutral helium lines using computer simulations that include some important aspects aimed at better representing the dynamical environment of the helium atom. These include the unification of ion and electron treatment, the correction for ion dynamics, the transition of the electron contribution to broadening from the core to the wings of the profile, the numerical integration of the time evolution operator of helium perturbed by a fluctuating electric field, the Debye correction for the correlation of the motion of charged perturbers, local density variations, and particle reinjection. We compare the results of our simulations for the He I λλ4471 and 4922 lines with other results published in the literature. We also test our simulation environment for narrow lines (He I λλ5877 and 6678) and broader lines (He I λλ4026 and 4144). We find that the narrow lines are more difficult to produce adequately than the broader ones.

Journal keyword(s): White dwarf stars - Collisional broadening - Astrophysical processes - Spectroscopy - N-body simulations

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	2MASS J16413368+3626077	pA*	16 41 33.6668708904	+36 26 07.783784952		12.98	13.14			B2p	79	0

Query : 2020ApJ...901..104T

Basic data :

2MASS J16413368+3626077 -- Post-AGB Star

* (Cl*,Gaia), blu (2019A&A), pA* (2007A&A), HS? (2019A&A), NIR (2MASS)

16 41 33.6668708904 +36 26 07.783784952 (Optical) [ 0.0242 0.0261 90 ] A 2020yCat.1350....0G

16 39 46.3765824672 +36 31 47.859197235 [ 0.0242 0.0261 90 ]

058.9716190225456 +40.9354634783442 [ 0.0242 0.0261 90 ]

-3.203 -2.760 [0.031 0.033 90] A 2020yCat.1350....0G

0.0775 [0.0298] A 2020yCat.1350....0G

B2p D ~

B 12.98 [~] E ~

V 13.14 [~] E ~

G 13.123140 [0.002856] C 2020yCat.1350....0G

J 13.390 [0.024] C 2003yCat.2246....0C

H 13.45 [0.03] C 2003yCat.2246....0C

K 13.51 [0.04] C 2003yCat.2246....0C

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`2MASS J16413368+3626077`	*`Cl NGC 6205 ZNG 1`**	`NGC 6205 222`	`Gaia DR3 1328057763997734144`
*`Cl NGC 6205 ARP 3033`**	*`Cl NGC 6205 BARN 29`**	`TIC 57158280`
*`Cl NGC 6205 KAD 393`**	*`Cl NGC 6205 ARP III-33`**	`Gaia DR2 1328057763997734144`

References (79 between 1850 and 2026) (Total 79)
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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2MASS J16413368+3626077 Cl* NGC 6205 KAD 393 Gaia DR2 1328057763997734144 Gaia DR3 1328057763997734144

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