| Name | OT1_tharriso_1 |
| Title | Characterizing the Mid/Far-Infrared Excesses of Cataclysmic Variables |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342221755&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-y9wkja1 |
| Author | harrison, t. |
| Description | Spitzer and IRAS observations have shown that cataclysmic variables (CVs) are sources of mid/far-infrared emission. While the excesses detected by Spitzerhave been attributed to circumbinary disks (CB), as currently envisioned, such disks could not be reponsible for the IRAS detections. If due to dust, the IRAS detections imply much more extended CB disks then previously proposed, or perhaps, dust shells ejected by ancient classical novae eruptions. Alternatively, the Spitzer and IRAS detections may be due to synchrotron emission from these objects. Recent Spitzer and radio observations have now confirmed that CVs are synchrotron sources. If most CVs are synchrotron sources, this would solve the mystery of the unexpectedly large IRAS detection rate for CVs. Both CB disks and synchrotron emission can provide additional sources of angular momentum loss. Currently, there is considerable debate in the CV community over whether the commonly invoked mechanisms for momentum loss are sufficient to explain CV evolution. If most CVs have CB disks or synchrotron jets, they could provide the additional angular momentum loss required to keep CVs contact binaries. We propose to conduct a small survey spanning the major subclasses of CVs. All eight targets have mid/far-infrared excesses. Our program requires 7.0 hr of Herschel time. |
| Publication |
|
| Instrument | PACS_PacsPhoto_largeScan |
| Temporal Coverage | 2011-05-27T15:21:29Z/2012-04-07T00:14:42Z |
| 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 | 2012-10-06T23:50:20Z |
| Last Update | 2026-03-02 |
| Keywords | Herschel Space Observatory data, ESA Herschel mission dataset, far-infrared astronomy observations, submillimeter astronomy data, infrared space telescope observations, PACS photometer data, PACS spectrometer data, SPIRE photometer data, SPIRE Fourier transform spectrometer data, HIFI heterodyne spectroscopy data, far-infrared spectroscopy dataset, submillimeter spectral line observations, cold universe observations dataset, star formation infrared data, molecular cloud far-infrared observations, interstellar medium spectroscopy data, protoplanetary disk infrared observations, galaxy evolution far-infrared data, dust emission submillimeter observations, cosmic infrared background measurements, extragalactic infrared survey data, calibrated level 2 data products, FITS files astronomy, spectral cubes far-infrared, flux-calibrated maps, continuum photometry data, spectral energy distribution measurements, ESA Herschel Science Archive data |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, harrison et al., 2012, 'Characterizing the Mid/Far-Infrared Excesses of Cataclysmic Variables', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-y9wkja1 |