| Name | OT2_bsargent_1 |
| Title | Herschel PACS Spectroscopy of Mass Loss from Red Supergiant Stars in the Large Magellanic Cloud |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342267866&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-evx795k |
| Author | sargent, b. |
| Description | We propose to measure the thermal CO lines J = 14-13 and J = 15-14 in the circumstellar envelopes (CSEs) of 2 of the brightest red supergiant (RSG) stars at far-infrared wavelengths in the Large Magellanic Cloud (LMC) - WOH G64 and IRAS 05280-6910. CO lines are useful for measuring molecular gas, which dominates stellar winds from low-temperature stars, such as RSGs. The scientific objectives are as follows: (1) What gas mass-loss rates do LMC RSG stars experience? Mass lost from RSGs consists mainly of molecular gas, so measurements of the gas mass-loss rate are crucial. (2) Of particular interest is the influence of low metallicities, so we will compare the gas-to-dust ratios of evolved stars in the LMC (half of the solar metallicity) and those in the Galaxy. (3) Finally, our measurements will help us understand whether or not RSGs play a key role in the life-cycle of matter within galaxies (e.g., as dust and gas injectors). |
| Publication | The mass-loss rates of red supergiants at low metallicity: detection of rotational CO emission from two red supergiants in the Large Magellanic Cloud . Matsuura Mikako et al. . Monthly Notices of the Royal Astronomical Society, Volume 462, Issue 3, p.2995-3005 . 462 . 10.1093/mnras/stw1853 . 2016MNRAS.462.2995M , |
| Instrument | PACS_PacsLineSpec_point |
| Temporal Coverage | 2013-03-19T06:20:29Z/2013-04-12T05:50:57Z |
| Version | SPG v14.2.0 |
| Mission Description | Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities. |
| Creator Contact | https://support.cosmos.esa.int/h®erschel/ |
| Date Published | 2013-10-12T03:59:05Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2013-10-12T03:59:05Z, OT2_bsargent_1, SPG v14.2.0. https://doi.org/10.5270/esa-evx795k |