WAVELENGTH MEASUREMENTS OF K TRANSITIONS OF OXYGEN, NEON, AND MAGNESIUM WITH X-RAY ABSORPTION LINES

doi:10.1088/0004-637X/774/2/116

IHEP OpenIR

	WAVELENGTH MEASUREMENTS OF K TRANSITIONS OF OXYGEN, NEON, AND MAGNESIUM WITH X-RAY ABSORPTION LINES
	Liao, JY; Zhang SN(张双南); Zhang, SN; Yao, YS
	2013
Source Publication	ASTROPHYSICAL JOURNAL
ISSN	0004-637X
EISSN	1538-4357
Volume	774 Issue:2 Pages:116
Abstract	Accurate atomic transition data are important in many astronomical research areas, especially for studies of line spectroscopy. Whereas transition data of He-like and H-like ions (i.e., ions in high-charge states) have been accurately calculated, the corresponding data of K transitions of neutral or low-ionized metal elements are still very uncertain. Spectroscopy of absorption lines produced in the interstellar medium (ISM) has been proven to be an effective way to measure the central wavelengths of these atomic transitions. In this work, we analyze 36 Chandra High Energy Transmission Grating observations to search for and measure the ISM absorption lines along sight lines to 11 low-mass X-ray binaries. We correct the Galactic rotation velocity to the rest frame for every observation and then use two different methods to merge all the corrected spectra to a co-added spectrum. However, the co-added spectra obtained by this method exhibit biases, toward to either observations with high counts or lines with high signal-to-noise ratios. We do a Bayesian analysis of several significantly detected lines to obtain the systematic uncertainty and the bias correction for other lines. Compared to previous studies, our results improve the wavelength accuracy by a factor of two to five and significantly reduce the systematic uncertainties and biases. Several weak transitions (e. g., 1s-2p of Mg IV and Mg V; 1s-3p of Mg III and Mg V) are also detected for the first time, albeit with low significance; future observations with improved accuracy are required to confirm these detections.
Keyword	ISM: atoms methods: data analysis X-rays: binaries X-rays: ISM
Subject Area	Astronomy & Astrophysics
DOI	10.1088/0004-637X/774/2/116
Indexed By	SCI ; INSPIREHEP ; ADS
Language	英语
WOS ID	WOS:000323888900025
ADS Bibcode	2013ApJ...774..116L
ADS URL	https://ui.adsabs.harvard.edu/abs/2013ApJ...774..116L
ADS CITATIONS	https://ui.adsabs.harvard.edu/abs/2013ApJ...774..116L/citations
inspireid	1242243
inspireURL	https://inspirehep.net/literature/1242243
Citation statistics	Cited Times:15 [INSPIRE] Cited Times:30 [ADS]
Document Type	期刊论文
Identifier	http://ir.ihep.ac.cn/handle/311005/224423
Collection	中国科学院高能物理研究所
Recommended Citation GB/T 7714	Liao, JY,Zhang SN,Zhang, SN,et al. WAVELENGTH MEASUREMENTS OF K TRANSITIONS OF OXYGEN, NEON, AND MAGNESIUM WITH X-RAY ABSORPTION LINES[J]. ASTROPHYSICAL JOURNAL,2013,774(2):116.
APA	Liao, JY,张双南,Zhang, SN,&Yao, YS.(2013).WAVELENGTH MEASUREMENTS OF K TRANSITIONS OF OXYGEN, NEON, AND MAGNESIUM WITH X-RAY ABSORPTION LINES.ASTROPHYSICAL JOURNAL,774(2),116.
MLA	Liao, JY,et al."WAVELENGTH MEASUREMENTS OF K TRANSITIONS OF OXYGEN, NEON, AND MAGNESIUM WITH X-RAY ABSORPTION LINES".ASTROPHYSICAL JOURNAL 774.2(2013):116.

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