OUSNMAY06 - The George Abell Observatory
... NGC4449 (10.5) ir. Appears almost rectangular making it an unusual object to view. NGC4485 (12.5) ir and NGC4490 (10.1) sg. Interacting pair of galaxies. NGC4631 (9.7) sg and NG4656 (10.4) pc. are a fine example of a pair of interacting galaxies, both edge-on to our view, located mid-way between Cor ...
... NGC4449 (10.5) ir. Appears almost rectangular making it an unusual object to view. NGC4485 (12.5) ir and NGC4490 (10.1) sg. Interacting pair of galaxies. NGC4631 (9.7) sg and NG4656 (10.4) pc. are a fine example of a pair of interacting galaxies, both edge-on to our view, located mid-way between Cor ...
ASTRONOMY 301 EXAMPLES OF TEST
... (A) We would see completely different kinds of objects when we look at the night sky. (B) We would see only the most energetic objects – for example, supernovae – in the night sky. (C) We would see more or less the same objects that we see now, but hotter objects would be easier to see and colder ob ...
... (A) We would see completely different kinds of objects when we look at the night sky. (B) We would see only the most energetic objects – for example, supernovae – in the night sky. (C) We would see more or less the same objects that we see now, but hotter objects would be easier to see and colder ob ...
Planetarium Key Points
... the ecliptic, they tend to pull the equatorial bullge of the Earth towards it and most of this “flattening torque” is caused by the Moon and the Sun. But the Earth is rotating and therefore the torque cannot change the inclination of the equator relative to ecliptic, istead the rotation axis turns i ...
... the ecliptic, they tend to pull the equatorial bullge of the Earth towards it and most of this “flattening torque” is caused by the Moon and the Sun. But the Earth is rotating and therefore the torque cannot change the inclination of the equator relative to ecliptic, istead the rotation axis turns i ...
WORD - UWL faculty websites
... 3. What is the temperature shown for this EM blackbody source? 4800 K 4. What would this temperature be in Celsius? 4800 – 273.15 = 2526.85 °C 5. Would a sensor that responds only to infrared be able to detect this EM source? Yes – some energy is emitted at infrared wavelengths (longer than red ligh ...
... 3. What is the temperature shown for this EM blackbody source? 4800 K 4. What would this temperature be in Celsius? 4800 – 273.15 = 2526.85 °C 5. Would a sensor that responds only to infrared be able to detect this EM source? Yes – some energy is emitted at infrared wavelengths (longer than red ligh ...
AST 111 – Introduction to Astronomy
... 4. If we say that an object is 1,000 light-years away we see it a. as it looked 1,000 light-years ago. b. as it is right now, but it appears 1,000 times dimmer. c. as it looked 1,000 years ago. d. as it would appear to our ancestors 1,000 years ago. 5. The star Vega has an apparent visual magnitude ...
... 4. If we say that an object is 1,000 light-years away we see it a. as it looked 1,000 light-years ago. b. as it is right now, but it appears 1,000 times dimmer. c. as it looked 1,000 years ago. d. as it would appear to our ancestors 1,000 years ago. 5. The star Vega has an apparent visual magnitude ...
Protostellar/PMS Mass Infall Luminosity Problem
... The observed large scatter of protostellar luminosities is due both to star-to-star differences in the time evolution of the infall rate and to large fluctuations of the infall of individual stars (especially during binary or ...
... The observed large scatter of protostellar luminosities is due both to star-to-star differences in the time evolution of the infall rate and to large fluctuations of the infall of individual stars (especially during binary or ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... Many of the helium atoms in the Universe were also made in the big bang. The other atoms were made inside of stars or during explosions of stars. When the Sun becomes a red giant, carbon and maybe oxygen will be made in its core. But the core will be the left-over white dwarf. The gas put back out i ...
... Many of the helium atoms in the Universe were also made in the big bang. The other atoms were made inside of stars or during explosions of stars. When the Sun becomes a red giant, carbon and maybe oxygen will be made in its core. But the core will be the left-over white dwarf. The gas put back out i ...
Measuring Motion, Doppler Effect—28 Oct Outline • Announcements
... – Separation of two wavelengths grows larger, then smaller. ...
... – Separation of two wavelengths grows larger, then smaller. ...
Solar System Origins
... Proposes that Solar System evolved from a rotating, flattened disk of gas and dust (an interstellar cloud), the outer part of the disk becoming the planets and the inner part becoming the Sun ...
... Proposes that Solar System evolved from a rotating, flattened disk of gas and dust (an interstellar cloud), the outer part of the disk becoming the planets and the inner part becoming the Sun ...
Stars, Galaxies, and the Universe Section 1
... • Because different elements absorb different wavelengths of light, scientists can determine the elements that make up a star by studying its spectrum. ...
... • Because different elements absorb different wavelengths of light, scientists can determine the elements that make up a star by studying its spectrum. ...
Magnetized Gravitational Collapse & Star Formation
... • Annihilation of split monopole is replaced by multipoles of stellar field sustained by dynamo action. • Latter fields are measured in T Tauri stars through Zeeman broadening by Basri, Marcy, & Valenti (1992) and Johns-Krull, Valenti, & Koresko ...
... • Annihilation of split monopole is replaced by multipoles of stellar field sustained by dynamo action. • Latter fields are measured in T Tauri stars through Zeeman broadening by Basri, Marcy, & Valenti (1992) and Johns-Krull, Valenti, & Koresko ...
3-color photometry of stellar cluster - Kiepenheuer
... If many stars are plotted it is immediately clear that stars appear in specific ranges of these diagrams. In the center there is a diagonal where many stars are situated, these diagonal is called the main sequence (Voigt, 1969). The main sequence ranges from bright, bluish-white O, A and B stars to ...
... If many stars are plotted it is immediately clear that stars appear in specific ranges of these diagrams. In the center there is a diagonal where many stars are situated, these diagonal is called the main sequence (Voigt, 1969). The main sequence ranges from bright, bluish-white O, A and B stars to ...
Lecture 8
... since they were formed from baryonic matter after BBN. However, if there are primordial black holes produced in the big bang before BBN, they would not be included in Ωb . A star requires a mass of about 0.07M⊙ to ignite thermonuclear fusion, and to start to shine as a star. Smaller, “failed”, stars ...
... since they were formed from baryonic matter after BBN. However, if there are primordial black holes produced in the big bang before BBN, they would not be included in Ωb . A star requires a mass of about 0.07M⊙ to ignite thermonuclear fusion, and to start to shine as a star. Smaller, “failed”, stars ...
Available online www.jsaer.com Journal of Scientific and
... Betelgeuse at Orion's "armpit" and the blue Bellatrix at the shoulder. What causes stars to exhibit different colours remained a mystery until two centuries ago, when Physicists gained enough light of the nature of light and the properties of matter at immensely high temperatures [7]. Specifically, ...
... Betelgeuse at Orion's "armpit" and the blue Bellatrix at the shoulder. What causes stars to exhibit different colours remained a mystery until two centuries ago, when Physicists gained enough light of the nature of light and the properties of matter at immensely high temperatures [7]. Specifically, ...
The Sun has been stable for 4 billion years.
... Main sequence stars produce energy by fusing hydrogen into helium in their centers. The radius, temperature, luminosity, and lifetime of a main sequence star are determined by its mass. Pressure balance A star is an immense ball of gas. The pressure at any point is equal to the total weight of the g ...
... Main sequence stars produce energy by fusing hydrogen into helium in their centers. The radius, temperature, luminosity, and lifetime of a main sequence star are determined by its mass. Pressure balance A star is an immense ball of gas. The pressure at any point is equal to the total weight of the g ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.