Podcast: Simo-Slacker Interviews Pt. I

At last, we have another exciting episode of Slacker Astronomy. This episode is packed full of Slackery goodness including, but not limited to, the following:

• 2008 TC3
• Mars
• Hubble
• 100 Hours of Astronomy
• Simostronomy
• Cataclysmic variable stars
  including an interview with Brad Schaefer and another interview with Steve Howell
• the ISS

If you aren’t smart enough to subscribe you can just click below to listen now or download to your hard drive.

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This podcast is brought to you by Swinburne Astronomy Online, offering fully online degree programs in astronomy.

Eta Car — still an enigma

Eta Carinae is an enigma. Look it up, it totally is. And it doesn’t look like that is going to change anytime soon! The image at right shows 3 cycles of the X-ray light curve. You can see the most recent event is quite different than previous events. We are watching one of the most massive stars possible changing on ridiculously short times scales.

What is going on? We don’t know.

Dr. Roberta Humphreys

Today is Ada Lovelace Day, “an international day of blogging to draw attention to women excelling in technology”.

People familiar with Slacker Astronomy have probably heard of Dr. Roberta Humphreys from my interviews with her. She is a professional astronomer at the University of Minnesota and she is a very well-connected and influential astronomer.

When Roberta Humphreys arrived at the University in 1972, the newly hired 28-year-old assistant professor of astronomy was, as she recalls, “the fifth and youngest woman faculty member in IT.

Her accolades are seriously impressive:

INSTITUTE OF TECHNOLOGY DISTINGUISHED PROFESSOR 2001-, ASSOCIATE DEAN FOR ACADEMIC AFFAIRS, INSTITUTE OF TECHNOLOGY 2002-2007; Fellow, AAAS 1980, Humboldt Senior Scientist Award, Federal Republic of Germany, 1988, George W. Taylor Research Award, Institute of Technology, 1985. AAS Tinsley Prize Committee 1994-96, Chair 1995-96; AAS Nominating Committee 1998-2000, Chair, 2000; NASA UV/Optical Review Panel 1995; NASA Senior Review (Office of Space Science) 2001; NASA Senior Review (The Universe) 2006; NSF Special Review for AURA 2000, NSF Special Review Panel for ITR/NVO 2001; NVO Science Definition Team 2001-02; University of Minnesota Member Representative to AURA 2001- 2010, AURA Nominating Committee 2006, Space Telescope Institute Council (AURA) 2004-2010. Senate/Faculty Consultative Committee 1995-96, 1998-2000, Vice-Chair University/Faculty senate 1995-96, 1999-2000;

I am writing about her for several reasons. She has been very kind and supportive of me, a lowly amateur astronomer who wanted to get involved with professional research. She is discussed in the book Lonely Hearts of the Cosmos about her time working with (and disagreeing with) Sandage on the determination the Hubble constant. The “Humphreys-Davidson Limit“, an empirical upper limit of the mass of stars which can become a red supergiant, is named after her and her husband, Dr. Kris Davidson. She is someone that everyone in the astronomical world knows is formidable and not to be trifled with. She is a consummate professional and a brilliant astronomer. Her work on massive stars is unequaled.

Further, she has worked her entire career not just on astronomy but on broadening the role of women in science in general.

She is a (short) giant and I am very grateful that I have been able to work with her and get to know her.

My love affair with astronomy

We remodeled our basement and in preparation we boxed up a lot of stuff. The basement is finished now and the boxes are down there ready to be unpacked. One of them has all of my old beginning astronomy books in it and I opened it up last night to see my old friends.

It was almost like looking at old love letters. I felt sad and nostalgic. These were the love letters that started my love affair with astronomy. After my girlfriend got me a telescope, I became an absolutely voracious amateur astronomer. I was part of the “every clear night club” — heading out to observe every clear night, regardless of the temperature, often observing in temperatures -15F (-26C). I eventually built an observatory, spent a fair amount of money on a great telescope, mount and CCD camera and started imaging and eventually doing photometry.

But that’s not all! I joined the Minnesota Astronomical Society, the AAVSO, the AAS (eventually) and the ASP. I started doing research in the department at the University of Minnesota. I started taking calculus and physics classes, eventually getting a BS in Astrophysics.

I got the bug big time.

When all of this started I was single. Eventually I got married and had one kid and then another. I started a new business along the way, which grew from $0 in revenue to $5M and from 4 people to 35. So my life, during my quest to learn as much as I could about astronomy, changed a lot. Suffice to say, I am no longer a member of the “every clear night club”. I’ve also satisfied a lot of my initial curiosity about astronomy. I got a BS in Astrophysics because I wanted to know how math could explain stars. I took classes on stars, galaxies, cosmology, computational physics — it was awesome. I learned (to some minor extent) about things like thermodynamics, quantum mechanics and relativity. I could read entire paragraphs of Chandrasakar and understand it!

I also got gigabytes of data at my observatory. I plotted light curves, made periodograms and Fourier spectra. I wrote code to reduce data, learned IRAF and presented posters at professional meetings. I even got involved with Slacker Astronomy!

I’m not bragging, in case that is what it seems. I still know much less than every PhD student of astronomy in the world. I’m no genius and am probably not particularly gifted at astrophysics. But I love it and I loved learning about it.

But in some small way I burned out. The pressure of going to my observatory (which is 45 minutes away by car) while taking classes and going to meetings, all the while raising a family and building a business, was too much. Eventually my observing had to go — I couldn’t keep up with my classes and be up all night. Then, after I got my degree, I found I still wasn’t observing much, and when I did, I didn’t even bother to reduce the data.

What had happened to me? Did this love affair with astronomy die…?

The answer, I know, is no. There is a time for everything and there is nothing to be gained by trying to cram things in when it doesn’t feel right. I need to take care of my family and my business. In the meantime, I am exploring hobbies that I can enjoy closer to home. Someday…a day I look forward to very much…I will live in a place where my observatory can be in my backyard. Someday my kids will grow up, my business will be sold and I will be back in my mistress’s arms again, through the long, beautiful night.

Massive Stars Part 1 and 2

I’ve cross-posted on to the feed our last two contributions to The 365 Days of Astronomy Podcast. This is a two-part series with Dr. Roberta Humphreys and Dr. Kris Davidson from the University of Minnesota. They are experts on massive stars, supernova imposters and Eta Carinae. Thus, these are the topics of these podcasts!

Enjoy!

Part 1:
 

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Part 2:
 

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These episodes of Slacker Astronomy were also brought to you by Swinburne Astronomy Online, offering fully online postgraduate degree programs in astronomy.

Seen the comet?

I have my telescope on the bench for repairs, so I am missing the Comet Lulin hubbub. I hope you are getting out and taking a look!

We have some new podcasts in the works…check the feed soon for some new audio.

Busy busy!

M.