کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1779002 | 1523749 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The XMM-Newton view of the yellow hypergiant IRCÂ +Â 10420 and its surroundings
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The XMM-Newton view of the yellow hypergiant IRCÂ +Â 10420 and its surroundings The XMM-Newton view of the yellow hypergiant IRCÂ +Â 10420 and its surroundings](/preview/png/1779002.png)
چکیده انگلیسی
Among evolved massive stars likely in transition to the Wolf-Rayet phase, IRC + 10420 is probably one of the most enigmatic. It belongs to the category of yellow hypergiants and it is characterized by quite high mass loss episodes. Even though IRC + 10420 benefited of many observations in several wavelength domains, it has never been a target for an X-ray observatory. We report here on the very first dedicated observation of IRC + 10420 in X-rays, using the XMM-Newton satellite. Even though the target is not detected, we derive X-ray flux upper limits of the order of 1-3 Ã 10â14 erg cmâ2 sâ1 (between 0.3 and 10.0 keV), and we discuss the case of IRC + 10420 in the framework of emission models likely to be adequate for such an object. Using the Optical/UV Monitor on board XMM-Newton, we present the very first upper limits of the flux density of IRC + 10420 in the UV domain (between 1800 and 2250 Ã
and between 2050 and 2450Â Ã
). Finally, we also report on the detection in this field of 10 X-ray and 7 UV point sources, and we briefly discuss their properties and potential counterparts at longer wavelengths.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 29, May 2014, Pages 75-81
Journal: New Astronomy - Volume 29, May 2014, Pages 75-81
نویسندگان
M. De Becker, D. Hutsemékers, E. Gosset,