Search: onr:"swepub:oai:DiVA.org:su-171752" >
Fully automated int...
Fully automated integral field spectrograph pipeline for the SEDMachine : pysedm
-
Rigault, M. (author)
-
Neill, J. D. (author)
-
Blagorodnova, N. (author)
-
show more...
-
Dugas, A. (author)
-
Feeney, M. (author)
-
Walters, R. (author)
-
Brinnel, V. (author)
-
Copin, Y. (author)
-
Fremling, C. (author)
-
Nordin, J. (author)
-
- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
-
show less...
-
(creator_code:org_t)
- 2019-07-10
- 2019
- English.
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 627
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://www.aanda.or...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Current time domain facilities are discovering hundreds of new galactic and extra-galactic transients every week. Classifying the ever-increasing number of transients is challenging, yet crucial to furthering our understanding of their nature, discovering new classes, and ensuring sample purity, for instance, for Supernova Ia cosmology. The Zwicky Transient Facility is one example of such a survey. In addition, it has a dedicated very-low resolution spectrograph, the SEDMachine, operating on the Palomar 60-inch telescope. This spectrograph's primary aim is object classification. In practice most, if not all, transients of interest brighter than similar to 19 mag are typed. This corresponds to approximately 10-15 targets a night. In this paper, we present a fully automated pipeline for the SEDMachine. This pipeline has been designed to be fast, robust, stable and extremely flexible. PYSEDM enables the fully automated spectral extraction of a targeted point source object in less than five minutes after the end of the exposure. The spectral color calibration is accurate at the few percent level. In the 19 weeks since PYSEDM entered production in early August of 2018, we have classified, among other objects, about 400 Type Ia supernovae and 140 Type II supernovae. We conclude that low resolution, fully automated spectrographs such as the SEDMachine with pysedm installed on 2-m class telescopes within the southern hemisphere could allow us to automatically and simultaneously type and obtain a redshift for most (if not all) bright transients detected by LSST within z < 0.2, notably potentially all Type Ia Supernovae. In comparison with the current SEDM design, this would require higher spectral resolution (R greater than or similar to 1000) and slightly improved throughput. With this perspective in mind, pysedm is designed to easily be adaptable to any IFU-like spectrograph.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- instrumentation: spectrographs
- methods: observational
- techniques: spectroscopic
- surveys
- methods: data analysis
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Rigault, M.
-
Neill, J. D.
-
Blagorodnova, N.
-
Dugas, A.
-
Feeney, M.
-
Walters, R.
-
show more...
-
Brinnel, V.
-
Copin, Y.
-
Fremling, C.
-
Nordin, J.
-
Sollerman, Jespe ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Astronomy and As ...
- By the university
-
Stockholm University