{"id":1854,"date":"2020-11-30T14:42:00","date_gmt":"2020-11-30T13:42:00","guid":{"rendered":"https:\/\/ska-spain.es\/?p=1854"},"modified":"2025-07-23T10:44:42","modified_gmt":"2025-07-23T08:44:42","slug":"mhongoose-comienza-a-estudiar-el-debil-gas-atomico-que-rodea-a-las-galaxias-clave-en-su-evolucion","status":"publish","type":"post","link":"https:\/\/ska-spain.es\/en\/mhongoose-comienza-a-estudiar-el-debil-gas-atomico-que-rodea-a-las-galaxias-clave-en-su-evolucion\/","title":{"rendered":"MHONGOOSE begins to study the weak atomic gas that surrounds galaxies, key in their evolution"},"content":{"rendered":"<p><em><strong>30th November 2020<\/strong> \u2013 MHONGOOSE, a legacy project of the MeerKAT radiointerferometer, South African precursor to the Square Kilometer Array, produces its first results. They have been obtained in its preparatory phase, thus anticipating the window that will open to the understanding of the formation and evolution of galaxies.<\/em><\/p>\n<p style=\"text-align: justify;\">MHONGOOSE (MeerKAT Observations of Nearby Galactic Objects - Observing Southern Emitters) is a legacy project to study the distribution of atomic hydrogen (HI) in a selection of nearby galaxies using the MeerKAT radiotelescope (South Africa). As part of its testing phase, it has already provided its first scientific results. This first work, published in the journal Astronomy and Astrophysics, provides new findings on the distribution of gas around the galaxy ESO 302-G014 and shows the potential of the project.<\/p>\n<div id=\"attachment_1847\" style=\"width: 1040px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1847\" class=\"size-full wp-image-1847\" src=\"https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose-1.jpeg\" alt=\"\" width=\"1030\" height=\"579\" srcset=\"https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose-1.jpeg 1030w, https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose-1-980x551.jpeg 980w, https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose-1-480x270.jpeg 480w\" sizes=\"auto, (min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1030px, 100vw\" \/><p id=\"caption-attachment-1847\" class=\"wp-caption-text\"><em>Aerial view of the MeerKAT interferometer under construction. Credit: SARAO.<\/em><\/p><\/div>\n<p style=\"text-align: justify;\">MHONGOOSE will study how galaxies capture gas from their surroundings and the relationship between gas and star formation. To do so, the distribution of atomic hydrogen (HI) will be studied in a sample of 30 nearby galaxies, located less than 65 million light years from our Milky Way. The galaxies have been selected to cover all inclinations, from edge-on galaxies to front-on galaxies, and cover a very wide range in mass and luminosity.<\/p>\n<p style=\"text-align: justify;\">This variety in the sample allows addressing various questions about the transformation and evolution processes of galaxies in the nearby universe. The project has obtained 1650 hours of observation in the MeerKAT radiointerferometer, a precursor of SKA (Square Kilometer Array) consisting of 64 antennas located in the Karoo desert, in South Africa. MeerKAT is, until SKA is built, the most efficient telescope to obtain the type of data that is needed in MHONGOOSE.<\/p>\n<h3>Gas Clouds Surrounding a Dwarf Galaxy in the Southern Hemisphere<\/h3>\n<p style=\"text-align: justify;\">The first results that MHONGOOSE provides correspond to the galaxy called ESO 302-G014, a nearby gas-rich dwarf galaxy. The international scientific team responsible for the work, which has the participation of the IAA-CSIC, has used observations made with MeerKAT, together with complementary data in other wavelengths, to study its evolutionary history. They have found that the galaxy has a thin, asymmetrical outer disk, as well as a tidal tail of atomic hydrogen and an isolated cloud about 6,500 light-years from this galaxy.<\/p>\n<p style=\"text-align: justify;\">These structures, which had not been previously detected, seem to indicate that the galaxy underwent an interaction with another low mass galaxy. Lourdes Verdes-Montenegro, IAA-CSIC scientific researcher and the only Spanish member of the MHONGOOSE team, highlights that \u201cthe detected signs of a possible interaction with some low-mass galaxy companion are also supported by the presence of significant amounts of molecular gas detected by the ALMA interferometer and the existence of prominent star clusters, suggesting a recently induced star formation\u201d.<\/p>\n<div id=\"attachment_1848\" style=\"width: 1160px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1848\" class=\"size-full wp-image-1848\" src=\"https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose_2.png\" alt=\"\" width=\"1150\" height=\"1107\" srcset=\"https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose_2.png 1150w, https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose_2-980x943.png 980w, https:\/\/ska-spain.es\/wp-content\/uploads\/2023\/06\/20201130-Mhongoose_2-480x462.png 480w\" sizes=\"auto, (min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1150px, 100vw\" \/><p id=\"caption-attachment-1848\" class=\"wp-caption-text\"><em>Emission of atomic hydrogen associated with the galaxy ESO 302-G014, represented in three dimensions, where the structure that could correspond to a possible interaction with a low-mass companion is shown. Credit: Lourdes Verdes-Montenegro (IAA-CSIC).<\/em><\/p><\/div>\n<p style=\"text-align: justify;\">\"The deep images from the Dark Energy Camera Legacy Survey show a faint and diffuse object near the end of the filament, whose radius, brightness and color are compatible with that of a dwarf galaxy at a distance similar to that of ESO 302-G014\", points out Javier Rom\u00e1n, a researcher at the IAA-CSIC expert in deep optical images who participates in the work.<br \/>\nThese results are, according to Lourdes Verdes-Montenegro, \u201cjust a small preview of things to come\u201d, as they have been obtained with preliminary observations, and she is confident that \u201cin-depth observations of the objects in the MHONGOOSE sample will offer a glimpse of the fate of atomic gas when transferring from the intergalactic medium to galaxies\u201d. In the medium-term future, these types of observations will be able to be extended to more distant galaxies thanks to SKA, which will be the largest radiotelescope in the world, and in which MeerKAT will be integrated to form a single interferometer.<\/p>\n<div class=\"field-label\">Reference:<\/div>\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<p class=\"translation-block\">de Blok et al.\u00a0<em>\u201cMeerKAT HI commissioning observations of MHONGOOSE galaxy ESO 302-G014\u201d. Astronomy &amp; Astrophysics<\/em>\u00a0643, A147 (2020)\u00a0<a href=\"https:\/\/doi.org\/10.1051\/0004-6361\/202038894\" target=\"_self\">https:\/\/doi.org\/10.1051\/0004-6361\/202038894<\/a><\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>30 de noviembre de 2020 &#8211; MHONGOOSE, un proyecto de legado del radiointerfer\u00f3metro MeerKAT, precursor sudafricano del Square Kilometre Array, produce sus primeros resultados. Se han obtenido en su fase preparatoria, anticipando as\u00ed la ventana que abrir\u00e1 a la comprensi\u00f3n de la formaci\u00f3n y evoluci\u00f3n de las galaxias. MHONGOOSE (acr\u00f3nimo en ingl\u00e9s de Observaciones con [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[31,30],"tags":[],"class_list":["post-1854","post","type-post","status-publish","format-standard","hentry","category-all","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MHONGOOSE comienza a estudiar el d\u00e9bil gas at\u00f3mico que rodea a las galaxias, clave en su evoluci\u00f3n - SKA Spain<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ska-spain.es\/en\/mhongoose-comienza-a-estudiar-el-debil-gas-atomico-que-rodea-a-las-galaxias-clave-en-su-evolucion\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MHONGOOSE comienza a estudiar el d\u00e9bil gas at\u00f3mico que rodea a las galaxias, clave en su evoluci\u00f3n - SKA Spain\" \/>\n<meta property=\"og:description\" content=\"30 de noviembre de 2020 &#8211; MHONGOOSE, un proyecto de legado del radiointerfer\u00f3metro MeerKAT, precursor sudafricano del Square Kilometre Array, produce sus primeros resultados. Se han obtenido en su fase preparatoria, anticipando as\u00ed la ventana que abrir\u00e1 a la comprensi\u00f3n de la formaci\u00f3n y evoluci\u00f3n de las galaxias. 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Se han obtenido en su fase preparatoria, anticipando as\u00ed la ventana que abrir\u00e1 a la comprensi\u00f3n de la formaci\u00f3n y evoluci\u00f3n de las galaxias. 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