How Long to Read The Kinematics and Chemical Abundances of the Stellar Populations of M33

How Long Does it Take to Read The Kinematics and Chemical Abundances of the Stellar Populations of M33?

It takes the average reader 3 hours to read The Kinematics and Chemical Abundances of the Stellar Populations of M33 by Michael Andrew Hood

Assuming a reading speed of 250 words per minute. Learn more

Description

Here we present the results from our seminal work on identifying the properties of the stellar populations of the nearby spiral galaxy M33. We completed a spectroscopic survey of red giant stars in M33 using the DEIMOS spectrograph on the Keck II telescope, with the spectra centered on the CaII triplet of absorption lines located at wavelengths of 8498, 8542, and 8662 Å. Our spectroscopic fields were located on both the major and minor axes of M33, covering a projected distance of 4.0 d"kpc d"R d"10.3 kpc from the center of the galaxy. Targets were selected based on our previous observations using the gravity-sensitive DDO51 filter, allowing for discrimination between foreground Milky Way dwarfs and bona fide M33 red giant stars (Teig 2007). Kinematic analysis of these M33 members shows that, in addition to a thin disk, M33 also has a stellar halo. The halo of M33 has an intrinsic velocity dispersion of 49.8 ± 1.4 km/s and makes up 6.5% of our observed stars. M33's halo stars cover the metallicity range of -2.83 d"[Fe/H] d"-1.60 and have a mean metallicity of [Fe/H] = -2.26 with an intrinsic dispersion of 0.35 dex, while the disk stars in our fields cover a metallictiy range of -2.43 d" [Fe/H] d"-0.69, have a mean metallicity of [Fe/H] = -1.59 with an intrinsic dispersion of 0.30 dex, and show a radial metallicity gradient of -0.087 dex/kpc in the disk. We find that the difference between the velocity of the stars and the rotation of the HI disk is well fit with a single Gaussian function. We find no evidence for a thick disk. When we combine measurements from all of our observed fields, we find a weighted average velocity dispersion in the disk of 19.4 ± 0.69 km/s.

How long is The Kinematics and Chemical Abundances of the Stellar Populations of M33?

The Kinematics and Chemical Abundances of the Stellar Populations of M33 by Michael Andrew Hood is 180 pages long, and a total of 45,000 words.

This makes it 61% the length of the average book. It also has 55% more words than the average book.

How Long Does it Take to Read The Kinematics and Chemical Abundances of the Stellar Populations of M33 Aloud?

The average oral reading speed is 183 words per minute. This means it takes 4 hours and 5 minutes to read The Kinematics and Chemical Abundances of the Stellar Populations of M33 aloud.

What Reading Level is The Kinematics and Chemical Abundances of the Stellar Populations of M33?

The Kinematics and Chemical Abundances of the Stellar Populations of M33 is suitable for students ages 10 and up.

Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.

When deciding what to show young students always use your best judgement and consult a professional.

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