A dataset provided by the European Space Agency

Name OT1_agonza02_1
Title Spectroscopy of a Highly Magnified Galaxy Behind the Bullet Cluster


DOI 10.5270/esa-br69d54
Author gonzalez, a.
Description Initial Herschel results have demonstrated the power of the observatory for characterizing the properties of ultraluminous, star-forming galaxies during the peak era of star formation. Even with Herschel; however, the only way to spectroscopically study the properties of more typical, lower luminosity systems is by using gravitational lensing to augment the capability of the telescope. We request 12.8 hrs to obtain PACS and HIFI spectroscopy for a single, exceptionally magnified luminous infrared galaxy at z=2.791 that is lensed by the Bullet Cluster. This system, a dusty luminous infrared galaxy, is magnified by a factor of 100 and has a star-formation rate of 100 solar masses per year. It is the lowest stellar mass, lowest intrinsic luminosity galaxy known at z>2 that is magnified sufficiently to enable Herschel spectroscopy, providing our best chance of studying in detail a typical star-forming galaxy at this epoch. The primary goals with the current observations are (1) to obtain a high-fidelity determination of the warm gas mass in this sytem via molecular hydrogen rotational lines, and (2) to constrain the properties of the HII and photodissociation regions via fine structure lines, including the [CII] cooling line. The global objective is to obtain a detailed view of the ISM in this galaxy -- which is likely to yield the best information that we will have for any low mass galaxy at this epoch.
Instrument HIFI_HifiPoint_dbs, PACS_PacsRangeSpec_point, PACS_PacsLineSpec_point
Temporal Coverage 2011-08-07T15:09:05Z/2012-04-21T16:33:52Z
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2012-10-21T13:46:08Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-10-21T13:46:08Z, OT1_agonza02_1, SPG v14.2.0. https://doi.org/10.5270/esa-br69d54