Spectroscopy and photometry in astronomy
### Teaching language
English
_Obs.: As aulas serão em português caso todos dominem esta língua._
### Objectives
It is intended that students understand the workings and characteristics of detectors and instruments of observation in modern astronomy, in particular in the optical waveband and including CCD cameras and spectrographs. They should also acquire the basic knowledge enabling them to reduce photometric and spectroscopic data, analyze the results and infer conclusions on practical applications in research.
### Learning outcomes and competences
Familiarization with the basic signals in Astronomy (photometry, spectroscopy), detectors and their operation in order to be able to reduce the respective data. Acquisition of basic knowledge on data reduction. Ability to handle specific software and analyse the results of its application to real data.
### Working method
Presencial
### Program
1\. Instrumentation in Astronomy - Cameras and detectors. - Noise and artifacts recorded on a CCD and their correction. - Filter and magnitude systems in the optical. - The spectrograph and the dipersor - gratings. - Resolving power of a spectrograph. - Quick reference to multi-object spectroscopy and integral field spectroscopy. 2. Reduction of low-resolution spectroscopic observations - The treatment of thermal noise and sensitivity analysis of the detector. - Removal of the effects of cosmic rays in the images. - Calibration of the spectra in wavelength. - Calibration of spectra in flux using standard reference stars. - Analysis 3. Reduction of observations in several photometric filters - The treatment of thermal noise and sensitivity analysis of the detector. - PSF analysis and detection of objects in the image. - Aperture photometry. - Photometry calibration using standard stars.
### Mandatory literature
Sterken Chr.; [Astronomical photometry](http://catalogo.up.pt/F/-?func=find-b&local_base=FCUP&find_code=SYS&request=000228193 "Astronomical photometry (Opens in a new window)"). ISBN: 0-7923-1776-9
Kitchin C. R.; [Astrophysical techniques](http://catalogo.up.pt/F/-?func=find-b&local_base=FCUP&find_code=SYS&request=000193071 "Astrophysical techniques (Opens in a new window)"). ISBN: 0-85274-461-7
Gray David F.; [The observation and analysis of stellar photospheres](http://catalogo.up.pt/F/-?func=find-b&local_base=FCUP&find_code=SYS&request=000268080 "The observation and analysis of stellar photospheres (Opens in a new window)"). ISBN: 0-521-85186-6
### Complementary Bibliography
Sutton Edmund C.; [Observational astronomy](http://catalogo.up.pt/F/-?func=find-b&local_base=FCUP&find_code=SYS&request=000295338 "Observational astronomy (Opens in a new window)"). ISBN: 9781107010468
### Comments from the literature
Support documents regarding the software used for data reduction will be made available or indicated to the students. Published scientific papers will also be given as bibliographic material, when/if required.
### Teaching methods and learning activities
Practical work with computer during classes, enabling the reduction of real astronomical data using the adopted software. These classes will be supplemented with lectures on the fundamentals of data processing. The final exam will use the computer, in order to reduce real observations, both spectroscopic and photometric.
### Software
Astropy
### keywords
Physical sciences > Astronomy
### Evaluation Type
Distributed evaluation with final exam
### Assessment Components
Test: 100,00%
### Amount of time allocated to each course unit
Estudo autónomo: 106,00 hours
Frequency of lectures: 56,00 hours
**Total:**: 162,00 hours
### Eligibility for exams
Students should participate in, at least, 50% of the practical classes.
### Calculation formula of final grade
Studetns can choose between two alternative assessment systems:
A- With continuous assessment
A1. \[50%\] Intermediate written test on Photometry
A2. \[50%\] Intermediate written test on Spectroscopy
B- Without continuous assessment
Appeal exam with two components: Photometry \[50%\] + Spectroscopy \[50%\]
### Classification improvement
By exam, in the "época de recurso" (appeal). The appeal exam will have two components: a module on spectroscopy and another one on photometry. If the student wishes, he/she can improve the grade in only one of the modules.
More information at: https://sigarra.up.pt/fcup/en/ucurr_geral.ficha_uc_view?pv_ocorrencia_id=498802
Presential
TRUE
Spectroscopy and photometry in astronomy
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or HaDEA. Neither the European Union nor the granting authority can be held responsible for them. The statements made herein do not necessarily have the consent or agreement of the ASTRAIOS Consortium. These represent the opinion and findings of the author(s).
