Transcript star mag
Filippo Ciferri HorseHead Nebula By: Jason Fiola Introduction • Hello • I Make Money Making YouTube Videos – Machinima – FullScreen INC. • I Teach Guitar at LA School of Music AND I LOVE PHYSICS AND ASTRONOMY Introduction • The HorseHead Nebula – Most recognizable Stellar Sculpture • Personal Favorite • Term stellar sculpture may or may not be a real term. Introduction • Also Known as Bernard33 • Part of the much larger Orion Molecular Cloud Complex, or just Orion nebula • In the constellation Orion. Introduction • Located Just south of Alnitak – Alnitak is the eastmost star in Orion’s belt • Many cultures throughout history and around the world have noticed this asterism. • First recorded in 1888 – SUPER easy year to remember • Recorded by Williamina Fleming – On Photographic Plate B2312 (harder to remember..) – At the Harvard College Observatory. Introduction • Some final Introductory Notes on the HorseHead – About 1500 Light years away from the sun – Dimensions are about 7’x7’ • Depending on how tightly you frame it. – Napkin calculations, • it is ~4 parsecs across or 13 light years. • 250 solar masses. Introduction • Finally, it’s J2000 coordinates are RA 05h 40m 59.0s DEC -02* 27’ 30.0” PAUSE Hubble IR Data and Observations • Brayden and I went out for 2 observing sessions • First session, 14011415 – January 14th 2014 – With Kevin and Winter • They were observing Arp 273 – Brayden and I stayed later to try and get some data. Data and Observations • The data taken that day? None of it used.. – Moon had risen – Sky was too bright – We did at least get a routine down that we later used for our second attempt. Data and Observations • Our procedure was – Find Alnitak with our eye, center in finder scope, center on telescope and set coordinates • RA 5h 41m 28s • Dec -01* 56’ 10” • Mag = 1.85 – Focus star, HIP 26756 • • • • RA 5h 41m 45s Dec -2* 17’ 56” Mag = 7.5 FWHM = 6.1 Not good.. Data and Observations • Finally we moved the telescope to 5h 41m 42s and -2* 23’ 37” • We then tried to center the HorseHead as we liked it framed. – We noted 3 stars in a triangle that we used in the future to align our image each session. – We also noted the new coordinates after we framed the HorseHead as we liked it • 5h 41m 43.8s • -02* 26’ 47.5” Data and Observations • One more lesson from our first session – Pay attention to the dome’s openning.. • • • • • • The HorseHead travels across the sky quickly… Make sure it stays in view of the door.. Images started to get dark Took us a while to figure out why It was cold No one wanted to go outside.. Data and Observations • Second session a much more successful trip. • 14020102 or Feb 1st 2014 • Unfortunately the filter wheel was not yet ready – We definitely had enough time this night to take a color image. • We followed the same steps – Same check star, same focus star – FWHM = ~3.5 <- AWESOME! – Took 2 hours of data. Data and Observations • BUT!... • Of course each session has to have it’s hiccups, this session was no different. • I love this story.. • Another lesson – Keep Clean Notes, and.. READ THEM! (Often) Data and Observations • Luckily things went smoother from this point forward. • Until we need to take our Darks.. • Program wouldn’t let us • Last person that used the telescope set it to autodark. Data and Observations • FINALLY our finally image! • Next slide.. JUPITER Focus Area and Current Research • Stellar Nurseries • Research paper – “Infrared Census of Star Formation in The Horsehead Nebula.” Stellar Nurseries • A region where many young stars are being formed in dark molecular clouds. • The horsehead nebula happens to be one of these nurseries. • The Paper I picked explains. Infrared Census of Star Formation in The Horsehead Nebula • “The HorseHead Nebula is the closest radiatively sculpted pillar to the sun.” • Discussed piercing through the dark dust cloud. • Measuring 45 sources – 3 are bona fide proto-stars – 5 are major candidates – Within the 7’x7’ region called the HorseHead. Brendan P et. al Infrared Census of Star Formation in The Horsehead Nebula • Paper also discusses two star formation theories • Radiation driven implosion model – EVIDENCE found • Sequential star formation – Evidence not found. Brendan P et. al Bibliography • • • • Brendan P. Bowler, William H. Waller, S. Thomas Megeath, Brian M. Patten, Motohide Tamura (2009) Infrared Census of Star Formation in The Horsehead Nebula, http://arxiv.org/abs/0901.0564 http://www.hrastro.com/B33_HorseheadNebula/HorseheadNebula_1024x68 0.jpg http://apod.nasa.gov/apod/image/1304/horseheadir_hubble_1225.jpg http://d1jqu7g1y74ds1.cloudfront.net/wpcontent/uploads/2006/12/horsehead.jpg