| | |
| | |
Stat |
Members: 3645 Articles: 2'503'724 Articles rated: 2609
23 April 2024 |
|
| | | |
|
Article overview
| |
|
The size distribution of galaxies in the Sloan Digital Sky Survey | Shiyin Shen
; H.J. Mo
; Simon D.M. White
; Michael R. Blanton
; Guinevere Kauffmann
; Wolfgang Voges
; J. Brinkmann
; Istvan Csabai
; | Date: |
27 Dec 2002 | Journal: | Mon.Not.Roy.Astron.Soc. 343 (2003) 978 | Subject: | astro-ph | Abstract: | abridged: We use a complete sample of about 140,000 galaxies from the Sloan Digital Sky Survey (SDSS) to study the size distribution of galaxies and its dependence on their luminosity, stellar mass, and morphological type. The large SDSS database provides statistics of unprecedented accuracy. For each type of galaxy, the size distribution at given luminosity (or stellar mass) is well described by a log-normal function, characterized by its median $ar{R}$ and dispersion $sigma_{ln R}$. For late-type galaxies, there is a characteristic luminosity at $M_{r,0}sim -20.5$ (assuming $h=0.7$) corresponding to a stellar mass $M_0sim 10^{10.6}Msun$. Galaxies more massive than $M_0$ have $ar{R}propto M^{0.4}$ and $sigma_{ln R}sim 0.3$, while less massive galaxies have $ar{R}propto M^{0.15}$ and $sigma_{ln R}sim 0.5$. For early-type galaxies, the $ar{R}$ - $M$ relation is significantly steeper, $ar{R}propto M^{0.55}$, but the $sigma_{ln R}$ - $M$ relation is similar to that of late-type galaxies. Faint red galaxies have sizes quite independent of their luminosities. | Source: | arXiv, astro-ph/0301527 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |