| Name | OT2_emurph01_2 |
| Title | Identifying Ram Pressure-Induced Shocks in Stripped Virgo Spirals |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342247513&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-3vavz77 |
| Author | European Space Agency |
| Description | We propose to investigate the presence of ram pressure-induced shocks in three Virgo cluster galaxies exhibiting clear evidence for on-going ram pressure stripping, from a wealth of radio continuum, optical, infrared, and HI data. To achieve our goals, we will perform PACS spectroscopy to measure the [OI] and [CII] emission line strengths of three outer-disk regions. These regions are precisely located along the leading edge of the interaction region between the hot intracluster medium (ICM) and the cooler galaxy interstellar medium (ISM). The ionization state of the ISM gas within the leading edges will be revealed by the ratios of these two emission lines since they are the dominant coolants in the neutral and ionized ISM at low temperatures. Previous Spitzer IRS observations hinted at the presence of shock-excited molecular hydrogen. Hence, these proposed PACS spectroscopic observations will provide independent confirmation of ram pressure-induced shocks in the cold ISM along the leading edges of these ram pressure-stripped galaxies. Evidence for shock excitation throughout the ISM may explain the enhanced, global radio/infrared ratios observed in galaxies that are experiencing strong ram pressure. |
| Publication | |
| Instrument | PACS_PacsLineSpec_large |
| Temporal Coverage | 2012-06-28T19:05:07Z/2012-07-19T09:49:53Z |
| Version | SPG v14.2.2 |
| 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 | 2013-01-19T02:39:05Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2013, Identifying Ram Pressure-Induced Shocks In Stripped Virgo Spirals, SPG v14.2.2, European Space Agency, https://doi.org/10.5270/esa-3vavz77 |