News Archive

6.7.12 My paper "The Highly Unusual Outgassing of Comet 103P/Hartley 2 from Narrowband Photometry and Imaging of the Coma" has been accepted by Icarus. Preprint is here.

2.17.12 My paper "The Highly Unusual Outgassing of Comet 103P/Hartley 2 from Narrowband Photometry and Imaging of the Coma" has been submitted to the Icarus EPOXI special issue. Also, "Observational and Dynamical Characterization of Main-Belt Comet P/2010 R2 (La Sagra)" by Hsieh et al. has been accepted by AJ.

1.19.12 Yet more sungrazing comets in the news! I was interviewed about a new paper on C/2011 N3 (SOHO) for Scientific American.

1.13.12 More Lovejoy news here and in video form. Check me out at the 2:19 mark in the video!

12.21.11 In case you missed it, Lovejoy survived! I was interviewed for this Science@NASA article and wrote a blog post for Lowell. Stay tuned for more updates.

12.14.11 The most spectacular Kreutz comet of my lifetime was recently discovered (C/2011 W3 Lovejoy). I have been contributing some preliminary analysis to this excellent blog by Karl Battams (NRL).

10.4.11 Results from my EPSC-DPS talk on Hartley 2 were mentioned in a press release from the meeting (complete with figure).

9.29.11 I helped obtain some calibration data for Henry Hsieh's paper "Observational and Dynamical Characterization of Main-Belt Comet P/2010 R2 (La Sagra)" which now has been posted to astro-ph.

6.19.11 An image from my Hartley 2 paper is on the cover of the June 2011 issue of The Astronomical Journal.

5.17.11 "EPOXI: Comet 103P/Hartley 2 Observations from a Worldwide Campaign" (Meech et al. 2011) has now been published online here.

5.4.11 "CN Morphology Studies of Comet 103P/Hartley 2" has now been published online here.

3.30.11 My paper "CN Morphology Studies of Comet 103P/Hartley 2" was accepted by the Astronomical Journal. Pre-print is available on [astro-ph].

1.24.11 Here is a good article about a recent "storm" of sungrazing comets in which I was interviewed. This got picked up by a lot of other websites too!

12.7.10 "The Increasing Rotation Period of Comet 10P/Tempel 2" has now been published online here.

11.11.10 Additional results from Hartley 2 as well as our results reported on 10.22.10 appeared on IAUC 9175 (subscription required).

10.22.10 New results for Comet 103P/Hartley 2: we determined the pole orientation and tentative location of the northern jet (assuming a principal axis rotation) and discovered a southern jet. This appears on CBET 2512 (subscription required) and will appear on an IAUC shortly.

9.16.10 My paper "The Increasing Rotation Period of Comet 10P/Tempel 2" (Knight, Farnham, Schleicher, and Schwieterman) was accepted by the Astronomical Journal. Pre-print is available on astro-ph.

8.20.10 We determined the rotation period of 103P/Hartley 2 is 16.6+/-0.5 hr using CN narrowband imaging August 13-17, 2010. This appears on IAUC 9163 and CBET 2418 (subscriptions required).

7.20.10 My proposal "Studies of Sungrazing Comets Observed by SOHO and STEREO" was selected for funding by NASA PMDAP. [PDF of abstracts]

4.21.10 SOHO has recovered the periodic Marsden comet 1999 J6 = 2004 V9 = 2010 H3 (MPEC 2010-H37, CBET 2256, IAUC 9138 [passwords may be required]). I have made a page comparing the photometry on all three apparitions.

3.30.10 Archived SOHO comet images and photometry are (finally) showing up on ADS.

3.1.10 My article on Comet Lulin in the Lowell Observer is now available as a PDF.

1.6.10 My thesis paper was accepted by the Astronomical Journal. Preprint is here.

11.2.09 I helped obtain observations of Mercury in 2007 which are published here.

10.7.09 Some stories about our ongoing research are here (Lulin), here (Lulin), and here (Tempel 2).

6.24.09 I finished in 6th place in the Baseball Prospectus Idol competition. All of my articles are here.

5.31.09 Not quite astronomy, but I'm a finalist for a baseball writing competition. You can read my articles here, here, and here.

3.7.09 We determined the rotation period of Comet Lulin (C/2007 N3) is about 42 hours from 11 nights of imaging at Anderson Mesa. The IAUC is available here (subscription required). Email me if you'd like to see a movie.

12.11.08 Finally got around to moving the webpage from Maryland to Lowell.

10.30.08 My thesis is now available as a PDF. Email me if you would like a hard copy. Here is my new email address:

1.20.08 I will be doing a postdoc at Lowell Observatory with Dave Schleicher.

Observations of 9P/Tempel 1 during Deep Impact paper is out in Icarus.

Cyanogen Jets and the Rotation State of Comet Machholz (C/2004 Q2) is out in the Astronomical Journal.