A dataset provided by the European Space Agency

Name: Hunting for gamma Cas objects - continuing
Published: 2020-12-25T00:00:00Z

Proposal ID	084020
Title	Hunting for gamma Cas objects - continuing
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840200101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840200201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840200301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840200401 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840200501 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840200901 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840201201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840201301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840201501 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840201601
DOI	https://doi.org/10.5270/esa-35c7tlj
Principal Investigator, PI	Dr Yael Naze
Abstract	gamma Cas objects are Be stars presenting an unusually intense and hard X-rayemission. Currently, only about 20 such objects are known and it is very likelythat additional cases, even bright ones, remain undetected. To improve thesituation, we propose to observe in fulfill mode a set of well-chosen Be starswith snapshots to search for the characteristic gamma Cas signatures.
Publications	Three discoveries of u03b3 Cas analogues from dedicated XMM-Newton observations of Be stars \|Nazu00e9 Yau00ebl Motch Christian et al. \| MNRAS \| 493-2511 \| 2020 \| 2020MNRAS.493.2511N \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.493.2511N A possible nonthermal X-ray emission from u03b3 Cas analogues stars \|Ryspaeva Elizaveta B. Kholtygin Alexander F. \| OAst \| 30-132 \| 2021 \| 2021OAst...30..132R \| http://ui.adsabs.harvard.edu/#abs/2021OAst...30..132R The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2019-03-26T10:41:06Z/2019-11-19T12:57:11Z
Version	18.00_20191217_1110
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2020-12-25T00:00:00Z
Last Update	2025-01-27
Keywords	"gamma cas objects", "hard xray emission"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Yael Naze, 2020, 'Hunting for gamma Cas objects - continuing', 18.00_20191217_1110, European Space Agency, https://doi.org/10.5270/esa-35c7tlj