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http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1930| AzTEC 1.1 mm OBSERVATIONS OF THE MBM12 MOLECULAR CLOUD | |
| Itziar Aretxaga David Hughes Andrew Humphrey | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Galaxies: high-redshift ISM: molecules Stars: pre-main sequence Stars: protostars Submillimeter: galaxies Submillimeter: stars | |
| We present 1.1 mm observations of the dust continuum emission from the MBM12 high-latitude molecular cloud observed with the Astronomical Thermal Emission Camera (AzTEC) mounted on the James Clerk Maxwell Telescope on Mauna Kea, Hawaii. We surveyed 6.34 deg² centered on MBM12, making this the largest área that has ever been surveyed in this region with submillimeter and millimeter telescopes. Eight secure individual sources were detected with a signal-to-noise ratio of over 4.4. These eight AzTEC sources can be considered to be real astronomical objects compared to the other candidates based on calculations of the false detection rate. The distribution of the detected 1.1 mm sources or compact 1.1 mm peaks is spatially anti-correlated with that of the 100μm emission and the ¹²CO emission.We detected the 1.1 mm dust continuum emitting sources associated with two classical T Tauri stars, LkHα262 and LkHα264. Observations of spectral energy distributions (SEDs) indicate that LkHα262 is likely to be Class II (pre-main-sequence star), but there are also indications that it could be a late Class I (protostar). A flared disk and a bipolar cavity in the models of Class I sources lead to more complicated SEDs. From the present AzTEC observations of the MBM12 region, it appears that other sources detected with AzTEC are likely to be extragalactic and located behind MBM12. Some of these have radio counterparts and their star formation rates are derived from a fit of the SEDs to the photometric evolution of galaxies in which the effects of a dusty interstellar medium have been included. | |
| The Astrophysical Journal | |
| 10-02-2012 | |
| Artículo | |
| Inglés | |
| Estudiantes Investigadores Público en general | |
| Kim, M. J., et al., (2012), AzTEC 1.1 mm OBSERVATIONS OF THE MBM12 MOLECULAR CLOUD, The Astrophysical Journal, Vol. 746(11):1-8 | |
| ASTRONOMÍA Y ASTROFÍSICA | |
| Versión aceptada | |
| acceptedVersion - Versión aceptada | |
| Aparece en las colecciones: | Artículos de Astrofísica |
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| 18_Artxaga_2012_ApJ746-11.pdf | 1.17 MB | Adobe PDF | Visualizar/Abrir |