A dataset provided by the European Space Agency

Name: Testing Models for Stellar Magnetic Dynamos with Slow Rotators in Praesepe
Published: 2022-05-18T00:00:00Z

Proposal ID	086371
Title	Testing Models for Stellar Magnetic Dynamos with Slow Rotators in Praesepe
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0863710201
DOI	https://doi.org/10.57780/esa-tdu1pj2
Principal Investigator, PI	Dr Alejandro Nunez
Abstract	In solar-type stars, rotational shear at the tachocline is thought to power adynamo, generating a magnetic field that heats the stars corona, which producesX-rays. X-ray flux and rotation rates measurements therefore provide insightinto the strength of the underlying magnetic field and its dependence onrotation. But this rotation-activity relation remains unconstrained for theslowest rotators (i.e., Rossby number > 0.8). We propose to observe six700-Myr-old solar-type slowly rotating Praesepe stars, for a total of 157 ks ofexposure with the EPIC camera. Our data will provide invaluable information onthe rotation-activity relation for the slow rotators, enabling tests of dynamotheory in a largely unconstrained regime.
Publications	The Factory and the Beehive. IV. A Comprehensive Study of the Rotation X-Ray Activity Relation in Praesepe and the Hyades \|Nu00fau00f1ez Alejandro Agu00fceros Marcel A. et al. \| ApJ \| 931-45 \| 2022 \| 2022ApJ...931...45N \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...931...45N 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	2021-04-11T06:04:08Z/2021-04-11T14:57:28Z
Version	19.16_20210326_1200
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	2022-05-18T00:00:00Z
Last Update	2025-01-27
Keywords	"rotation rates measurements", "EPIC", "magnetic field", "dynamo theory", "epic camera", "rotation activity relation", "slow rotators", " rossby", "xray flux", "invaluable information", ".", "stellar magnetic dynamos", "slowest rotators", "unconstrained regime", "produces xray", "rotational shear", "solar type stars", "testing models"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Alejandro Nunez, 2022, 'Testing Models for Stellar Magnetic Dynamos with Slow Rotators in Praesepe', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-tdu1pj2