Dust Deficiency in the Interacting Galaxy NGC 3077
| Autor: | Crispin Logan, Ericson López, Jairo Armijos-Abendaño, Mario Llerena, Franklin Aldás |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Spiral galaxy Spiral galaxies lcsh:Astronomy Dust mass FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics - Astrophysics of Galaxies Galaxy dust-to-gas ratio lcsh:QB1-991 Spitzer Space Telescope dust mass Astrophysics of Galaxies (astro-ph.GA) spiral galaxies Dust-to-gas ratio |
| Zdroj: | Galaxies, Vol 5, Iss 3, p 53 (2017) Armijos-Abendaño, J, López, E, Llerena, M, Aldás, F & Logan, C 2017, ' Dust deficiency in the interacting galaxy NGC 3077 ', Galaxies, vol. 5, no. 3, 53 . https://doi.org/10.3390/galaxies5030053 Galaxies; Volume 5; Issue 3; Pages: 53 |
| DOI: | 10.3390/galaxies5030053 |
| Popis: | Using 70 μm observations taken with the PACS instrument of the Herschel space telescope, the dust content of the nearby and interacting spiral galaxy NGC 3077 has been compared with the dust content of the isolated galaxies such as NGC 2841, NGC 3184 and NGC 3351. The dust content has allowed us to derive dust-to-gas ratios for the four spiral galaxies of our sample. We find that NGC 2841, NGC 3184 and NGC 3351 have dust masses of 6.5-9.1 times; 107 M⊙, which are a factor of ~10 higher than the value found for NGC 3077. This result shows that NGC 3077 is a dust deficient galaxy, as was expected, because this galaxy is affected by tidal interactions with its neighboring galaxies M81 and M82. NGC 3077 reveals a dust-to-gas ratio of 17.5%, much higher than the average ratio of 1.8% of the isolated galaxies, evidencing that NGC 3077 is also deficient in H2 + HI gas. Therefore, it seems that, in this galaxy, gas has been stripped more efficiently than dust. |
| Databáze: | OpenAIRE |
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