{"id":20199,"date":"2017-10-24T19:27:42","date_gmt":"2017-10-24T13:57:42","guid":{"rendered":"http:\/\/astron-soc.in\/outreach\/?page_id=20199"},"modified":"2018-09-26T17:06:16","modified_gmt":"2018-09-26T11:36:16","slug":"apom001","status":"publish","type":"post","link":"https:\/\/astron-soc.in\/outreach\/2017\/10\/apom001\/","title":{"rendered":"Astrosat Picture of the Month #001"},"content":{"rendered":"

Sebtember 2017: <\/h3>

This APOM shows us newly formed star clusters in the dwarf galaxy Wolf-Lundmark-Melotte (WLM), imaged by the Ultra Violet Imaging Telescope on board the ASTROSAT<\/a>.<\/p>\n

(Picture Credits: Annapurni Subramaniam<\/em>)<\/p>\n

To download a high resolution image, see link<\/a>.<\/p>\n<\/div><\/div><\/div>

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\"ISRO<\/p>\n

\u00a0<\/p>\n

\u00a0<\/p>\n

\u00a0<\/p>\n

\u201cAstroSat Picture of the Month\u201d is an initiative of the Public Outreach and Education Committee of the Astronomical Society of India and the AstroSat Training and Outreach Team.<\/p>\n<\/div><\/div>

<\/span><\/a><\/span><\/a><\/span><\/a><\/div><\/div>

WLM: a dwarf galaxy, efficiently forming stars in grand isolation<\/h3>

Located in the constellation Cetus, 3 million light years away, is a faint dwarf galaxy,Wolf-Lundmark-Melotte<\/a>, or WLM for short. It is relatively isolated, lying in the outskirts of our Local Group of Galaxies<\/a>. It has a mass that is thousands of times less than the Milky Way and a metallicity that is only 13% solar. Lower metallicity implies less heavier elements, which in turn hinders forming new stars. So why did AstroSat even look at this galaxy?<\/p>\n

WLM is a dwarf irregular galaxy<\/a> with a low mass and metallicity and exists in solitude. Nevertheless, it manages to form new stars extremely efficiently. Adjusted for their respective masses, WLM forms stars at a rate that is 12 times higher than our own Milky Way! Astronomers are still not sure as to how WLM does this.<\/p>\n

Annapurni Subramaniam and her student Chayan Mondal at the Indian Institute of Astrophysics<\/a> in Bengaluru wanted to understand how this diminutive galaxy is such an efficient star factory. They decided to use the Ultra Violet Imaging Telescope<\/a> on board the AstroSat to image the younger star clusters in WLM. In this image, the blue dots are the star clusters imaged in Far Ultra-Violet (130-180 nm) and the yellow dots are those imaged in Near Ultra-Violet (180-300 nm). They are currently analysing this data and will soon be able to fit one more piece into the puzzle that is WLM.<\/p>\n

Click here<\/a> for the entire APOM archive and here<\/a> to return to the latest APOM.<\/p>\n<\/div><\/div><\/div>

More about ASTROSAT<\/h3>

AstroSat<\/a>, India's first dedicated multi-wavelength space observatory, was launched by ISRO on 28 September, 2015. It has five instruments on board \u2013 the Ultra Violet Imaging Telescope, the Soft X-ray Telescope, the Large Area X-ray Proportional Counter, the Cadmium-Zinc-Telluride Imager and the Scanning Sky Monitor.<\/p>\n

Get answers to your common queries about ASTROSAT in English<\/a>, in \u0939\u093f\u0902\u0926\u0940<\/a>, and in \u092e\u0930\u093e\u0920\u0940<\/a>.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

This APOM shows us newly formed star clusters in the dwarf galaxy Wolf-Lundmark-Melotte (WLM), imaged by the Ultra Violet Imaging Telescope on board the ASTROSAT. (Picture Credits: Annapurni Subramaniam) To download a high resolution image, see link. \u00a0\u00a0\u00a0\u201cAstroSat Picture of the Month\u201d is an initiative of the Public Outreach and Education Committee of the Astronomical […]<\/p>\n","protected":false},"author":9,"featured_media":19951,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[53,52],"tags":[],"class_list":{"0":"post-20199","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-apom","8":"category-astrosat","10":"post-with-thumbnail","11":"post-with-thumbnail-icon"},"jetpack_featured_media_url":"https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres.jpg","uagb_featured_image_src":{"full":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres.jpg",2032,1061,false],"thumbnail":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-150x150.jpg",150,150,true],"medium":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-300x157.jpg",300,157,true],"medium_large":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-768x401.jpg",720,376,true],"large":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-1024x535.jpg",720,376,true],"1536x1536":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres.jpg",1536,802,false],"2048x2048":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres.jpg",2032,1061,false],"post-thumbnail":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-720x380.jpg",720,380,true],"vantage-thumbnail-no-sidebar":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-1080x380.jpg",1080,380,true],"vantage-slide":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-960x480.jpg",960,480,true],"vantage-carousel":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-272x182.jpg",272,182,true],"vantage-grid-loop":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-436x272.jpg",436,272,true],"rpwe-thumbnail":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres.jpg",45,23,false],"sow-carousel-default":["https:\/\/astron-soc.in\/outreach\/wp-content\/uploads\/2017\/09\/wlm_lowres-272x182.jpg",272,182,true]},"uagb_author_info":{"display_name":"Samir Dhurde","author_link":"https:\/\/astron-soc.in\/outreach\/author\/samir\/"},"uagb_comment_info":0,"uagb_excerpt":"This APOM shows us newly formed star clusters in the dwarf galaxy Wolf-Lundmark-Melotte (WLM), imaged by the Ultra Violet Imaging Telescope on board the ASTROSAT. 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