scholarly journals Seeing the stolen starlight with Herschel

2009 ◽  
Vol 5 (S260) ◽  
Author(s):  
Haley L. Gomez ◽  
Edward L. Gomez ◽  
Peter Hargrave
Keyword(s):  
Public Interest ◽  
Far Infrared ◽  
Space Missions ◽  
Cosmic Dust ◽  
Space Observatory ◽  
Large Space ◽  
Herschel Space Observatory ◽  
Education And Outreach ◽  
The Uk ◽  
First Time

AbstractThe Herschel Space Observatory is ESA's fourth Cornerstone mission and will be the largest, most sensitive telescope ever put into space. It will be the first space observatory to observe from the far-infrared to the submillimetre waveband, unveiling the cool, hidden universe for the first time. Herschel will observe stars and galaxies at the stage of formation and discover where all the cosmic dust polluting galaxies comes from. Given the huge public interest in large space missions such as Hubble and Spitzer, Herschel is an ideal opportunity to excite and inform the UK public during the International Year of Astronomy 2009. Here we present some of the education and outreach projects created by the Herschel Outreach Group (HOG).

scholarly journals The Nature of Ultraluminous Infrared Galaxies

2001 ◽  
Vol 204 ◽  
pp. 179-191
Author(s):  
Eckhard Sturm
Keyword(s):  
Far Infrared ◽  
Spectroscopic Studies ◽  
Infrared Galaxies ◽  
Space Observatory ◽  
Infrared Space Observatory ◽  
Infrared Spectroscopic ◽  
Ultraluminous Infrared Galaxies ◽  
First Time

The Infrared Space Observatory (ISO) has for the first time made possible mid- and far-infrared spectroscopic studies of nearby and moderate redshift, dusty ultraluminous infrared galaxies (ULIRGs). We discuss recent SWS, LWS, ISOPHOT-S and ISOCAM (CVF) results on ULIRGs, addressing the following topics: What powers ULIRGs? What is the AGN-starburst connection? How do ULIRGs evolve? What is the connection of the local ULIRG population to the recently discovered population of mid-IR to submillimeter sources?

Cryogenic far-infrared laser absorptivity measurements of the Herschel Space Observatory telescope mirror coatings

2004 ◽  
Vol 43 (19) ◽  
pp. 3765 ◽  
Author(s):  
Jacqueline Fischer ◽  
Tjeerd Klaassen ◽  
Niels Hovenier ◽  
Gerd Jakob ◽  
Albrecht Poglitsch ◽  
...  
Keyword(s):  
Far Infrared ◽  
Infrared Laser ◽  
Space Observatory ◽  
Herschel Space Observatory ◽  
Far Infrared Laser

scholarly journals Eta carinae and the homunculus: far infrared/submillimetre spectral lines detected with the Herschel Space Observatory

2020 ◽  
Vol 499 (4) ◽  
pp. 5269-5301
Author(s):  
T R Gull ◽  
P W Morris ◽  
J H Black ◽  
K E Nielsen ◽  
M J Barlow ◽  
...  
Keyword(s):  
Binary Star ◽  
Far Infrared ◽  
Spectral Lines ◽  
Space Observatory ◽  
Herschel Space Observatory ◽  
Eta Carinae ◽  
Processed Material ◽  
Chemical Conditions ◽  
Physical And Chemical ◽  
Spectral Survey

ABSTRACT The evolved massive binary star η Carinae underwent eruptive mass-loss events that formed the complex bi-polar ‘Homunculus’ nebula harbouring tens of solar masses of unusually nitrogen-rich gas and dust. Despite expectations for the presence of a significant molecular component to the gas, detections have been observationally challenged by limited access to the far-infrared and the intense thermal continuum. A spectral survey of the atomic and rotational molecular transitions was carried out with the Herschel Space Observatory, revealing a rich spectrum of broad emission lines originating in the ejecta. Velocity profiles of selected PACS lines correlate well with known substructures: H i in the central core; NH and weak [C ii] within the Homunculus; and [N ii] emissions in fast-moving structures external to the Homunculus. We have identified transitions from [O i], H i, and 18 separate light C- and O-bearing molecules including CO, CH, CH+, and OH, and a wide set of N-bearing molecules: NH, NH+, N2H+, NH2, NH3, HCN, HNC, CN, and N2H+. Half of these are new detections unprecedented for any early-type massive star environment. A very low ratio [12C/13C] ≤ 4 is estimated from five molecules and their isotopologues. We demonstrate that non-LTE effects due to the strong continuum are significant. Abundance patterns are consistent with line formation in regions of carbon and oxygen depletions with nitrogen enhancements, reflecting an evolved state of the erupting star with efficient transport of CNO-processed material to the outer layers. The results offer many opportunities for further observational and theoretical investigations of the molecular chemistry under extreme physical and chemical conditions around massive stars in their final stages of evolution.

Seti Space Missions

1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone
Keyword(s):  
Electromagnetic Waves ◽  
Space Missions ◽  
Gravitational Lens ◽  
The Sun ◽  
Space Antenna ◽  
Focal Distance ◽  
Large Space ◽  
The Earth ◽  
Space Antennas ◽  
New Space

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.

The Zhenhua Case: the emergence of civil environmental public interest litigation in China

2021 ◽  
Vol 14 (2) ◽  
pp. 116-128
Author(s):  
Wenjun Yan
Keyword(s):  
Air Pollution ◽  
Environmental Protection ◽  
Public Interest ◽  
Pollution Control ◽  
Environmental Damage ◽  
Air Pollution Control ◽  
Public Interest Litigation ◽  
First Time ◽  
Restoration Cost

Abstract In 2015, the All-China Environment Federation v Dezhou Jinghua Group Zhenhua Corporation Limited case was the first civil environmental public interest litigation (CEPIL) against air pollution in China. Constituting a milestone in the field of air pollution control in China, this case (i) confirms the eligibility of a non-governmental organisation (NGO) to file civil public interest litigations; (ii) discusses remedies for the ecological destruction caused by air pollution; (iii) assesses the ecological and environmental damage using the ‘virtual restoration cost’ method; and (iv) uses public apology as an innovative way for Zhenhua to assume liability. By applying and interpreting several important rules under the Environmental Protection Law of China (EPLC) for the first time, this case sets an example for future CEPILs against air pollution in China.

Sign in / Sign up

Export Citation Format

Share Document