| Proposal ID | 008994 |
| Title | X-rays from protostars: the next step |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0089940101 |
| DOI | https://doi.org/10.5270/esa-cz9z83r |
| Principal Investigator, PI | Dr Thierry Montmerle |
| Abstract | X-rays have been detected from Class I protostars, which are understood from IR and mm data to be evolved protostars at the end of the accretion phase, when the central star is essentially formed (age ~ 10E5 yrs). We propose to move one step closer to star formation by observing Class 0 protostars, which are at a much earlier stage (age ~10E4 yrs). We select a sample of 5 protostars for which the extinction is known to be moderate (Av ~ 100). Since X-rays probe the innermost regions of protostars, we hope to gain insight for the first time into the nature of the central object, before it becomes a real star. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-03-18T09:16:38Z/2003-10-23T07:29:39Z |
| Version | 21.51_20241115_1113 |
| 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 | 2004-11-11T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "x rays", "10e4 yrs", "accretion phase", "moderate av", "10e5 yrs", "innermost region", "evolved protostars", "move step closer", "central star", "`` class", "formed age", "central object", "stage age", "gain insight", "star formation", "mm data", "'' protostars" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Thierry Montmerle, 2004, 'X-rays from protostars: the next step', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-cz9z83r |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |