IGR J19294+1816: a new Be-X ray binary revealed through infrared spectroscopy
| Autor: | Guillermo Bernabeu, Jose M. Torrejon, A. Magazzu, J. J. Rodes-Roca, Enrique Solano |
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| Přispěvatelé: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías, Astronomía y Astrofísica, ITA, ESP |
| Rok vydání: | 2018 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) emission-line [Stars] 010504 meteorology & atmospheric sciences X-ray binary Infrared spectroscopy FOS: Physical sciences Astronomy and Astrophysics Be 01 natural sciences Space and Planetary Science Física Aplicada 0103 physical sciences stars [Infrared] binaries [X-rays] Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Humanities 0105 earth and related environmental sciences |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| DOI: | 10.48550/arxiv.1802.01907 |
| Popis: | The aim of this work is to characterize the counterpart to the INTEGRAL High Mass X-ray Binary candidate IGR J19294+1816 so as to establish its true nature. We obtained H band spectra of the selected counterpart acquired with the NICS instrument mounted on the Telescopio Nazionale Galileo (TNG) 3.5-m telescope which represents the first infrared spectrum ever taken of this source. We complement the spectral analysis with infrared photometry from UKIDSS, 2MASS, WISE and NEOWISE databases. We classify the mass donor as a Be star. Subsequently, we compute its distance by properly taking into account the contamination produced by the circumstellar envelope. The findings indicate that IGR J19294+1816 is a transient source with a B1Ve donor at a distance of $d = 11 \pm 1$ kpc, and luminosities of the order of $10^{36-37}$ erg s$^{-1}$, displaying the typical behaviour of a Be X-ray binary. Comment: 8 pages, 6 figures, accepted to be published in MNRAS |
| Databáze: | OpenAIRE |
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