RUNNING HEAD: ASTROMETRY 1
Astrometry is the science of measuring the precise position of stars and monitoring their movements such as periodic shifts and any wobble at the stars’ positions. The specialists for the measurement of stars are referred to as astronomers, and they use a variety of techniques to track different earth objects. To find planetary items or to measure the distances of the stars, astronomers usually use telescopes or large area cameras, which are used to take clear pictures at various determined intervals (Penoyre, et al, 2020).
Then they study these images and detect solar system objects using their movements around the background of the stars because they are stagnant. Suppose any activity is observed per unit time. In that case, the astronomers look at the parallax, which could be caused by the earth movement during this time and consequently, the heliocentric distance to this object is calculated (Deller, et al, 2019). With the photographs’ help taken over a set period, and the calculations are done on the object, any unusual movement is obtained.
Astrometry is the earliest method that was used for the search of extrasolar planets. It is a very effective method because it can be applied to many stars, unlike photometry. Astrometric is significant because its measurements are used in the constrain of specific models in celestial mechanics. Besides, this technique is useful in other areas, such as galactic astronomy and stellar dynamics. It is also essential in the cosmic distance ladder because it is used to establish the parallax distance for the stars found in a milky way.
Deller, A. T., Goss, W. M., Brisken, W. F., Chatterjee, S., Cordes, J. M., Janssen, G. H., … & Lyne, A. (2019). Microarcsecond VLBI pulsar astrometry with PSRπ II. Parallax distances for 57 pulsars. The Astrophysical Journal, 875(2), 100. Retrieved from https://iopscience.iop.org/article/10.3847/1538-4357/ab11c7/meta
Penoyre, Z., Belokurov, V., Wyn Evans, N., Everall, A., & Koposov, S. E. (2020). Binary deviations from single object astrometry. Monthly Notices of the Royal Astronomical Society, 495(1), 321-337. Retrieved from https://academic.oup.com/mnras/article- abstract/495/1/321/5828731
SCI 200 Project Part One: Research Question Guidelines and Rubric Overview: Now that you have identified an issue in the natural sciences to research for your project, the next step is to formulate a specific research question to investigate in your planning document. For example, if your topic was electric cars, the following is an example question that would narrow the focus of your research: “What advances must be made in electric car technology and usage to have an impact on climate change?” As you develop your research question, think about how English physician John Snow was forced to develop his questions, and how they had to change over time. With that in mind, you will investigate sources for your chosen topic, so your research question may evolve as you discover more details related to your topic. Remember that science is an iterative process. Prompt: Articulate a clear and specific research question related to the topic that you would like to investigate. You will submit this question to your instructor for feedback and guidance while shaping the direction of your planning document. Specifically, the following critical element must be addressed:
Based on what you know so far about your chosen topic, develop a specific research question. In other words, what would you like to know more about the topic?
Rubric Guidelines for Submission: Your research question should be one to two sentences, double spaced, with 12-point Times New Roman font and one-inch margins.
Critical Elements Proficient (100%) Needs Improvement (75%) Not Evident (0%) Value
Research Question Develops specific research question related to chosen topic
Develops specific research question related to chosen topic, but lacks specificity or not clearly related to chosen topic
Does not develop specific research question related to chosen topic
Articulation of Response
Submission has no major errors related to citations, grammar, spelling, syntax, or organization
Submission has major errors related to citations, grammar, spelling, syntax, or organization that negatively impact readability and articulation of main ideas
Submission has critical errors related to citations, grammar, spelling, syntax, or organization that prevent understanding of ideas