Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'487'895
Articles rated: 2609

29 March 2024
 
  » arxiv » 2011.03782

 Article overview


Initial Visible and Mid-IR Characterization of P/2019 LD2 (ATLAS), an Active Transitioning Centaur Among the Trojans, with Hubble, Spitzer, ZTF, Keck, APO and GROWTH Imaging and Spectroscopy
Bryce T. Bolin ; Yanga R. Fernandez ; Carey M. Lisse ; Timothy R. Holt ; Zhong-Yi Lin ; Josiah N. Purdum ; Kunal P. Deshmukh ; James M. Bauer ; Eric C. Bellm ; Dennis Bodewits ; Kevin B. Burdge ; Sean J. Carey ; Chris M. Copperwheat ; George Helou ; Anna Y. Q. Ho ; Jonathan Horner ; Jan van Roestel ; Varun Bhalerao ; Chan-Kao Chang ; Christine Chen ; Chen-Yen Hsu ; Wing-Huen Ip ; Mansi M. Kasliwal ; Frank J. Masci ; Chow-Choong Ngeow ; Robert Quimby ; Rick Burruss ; Michael Coughlin ; Richard Dekany ; Alexandre Delacroix ; Andrew Drake ; Dmitry A. Duev ; Matthew Graham ; David Hale ; Thomas Kupfer ; Russ R. Laher ; Ashish Mahabal ; Przemyslaw J. Mróz ; James D. Neill ; Reed Riddle ; Hector Rodriguez ; Roger M. Smith ; Maayane T. Soumagnac ; Richard Walters ; Lin Yan ; Jeffry Zolkower ;
Date 7 Nov 2020
AbstractWe present visible and mid-infrared imagery and photometry of Jovian co-orbital comet P/2019 LD$_2$ (ATLAS) taken with Hubble Space Telescope/WFC3 on 2020 April 1, Spitzer Space Telescope/IRAC on 2020 January 25, Zwicky Transient Facility between 2019 April 9 and 2019 Nov 8 and the GROWTH telescope network from 2020 May to July, as well as visible spectroscopy from Keck/LRIS on 2020 August 19. Our observations indicate that LD$_2$ has a nucleus with radius 0.2-1.8 km assuming a 0.08 albedo and that the coma is dominated by $sim$100 $mu$ m-scale dust ejected at $sim$1 m/s speeds with a $sim$1’’ jet pointing in the SW direction. LD$_2$ experienced a total dust mass loss of $sim$10$^8$ kg and dust mass loss rate of $sim$6 kg/s with Af$ ho$/cross-section varying between $sim$85 cm/125 km$^2$ and $sim$200 cm/310 km$^2$ between 2019 April 9 and 2019 Nov 8. If the Af$ ho$/cross-section increase remained constant, it implies that LD$_2$ has remained active since $sim$2018 November when it came within 4.8 au of the Sun, a typical distance for comets to begin sublimation of H$_2$O. From our 4.5 $mu$m Spitzer observations, we set a limit on CO/CO$_2$ gas production of $sim$10$^{27}$/$sim$10$^{26}$ mol/s. Multiple bandpass photometry of LD$_2$ taken by the GROWTH network measured in a 10,000 km aperture provide color measurements of $g$-$r$ = 0.59$pm$0.03, $r$-$i$ = 0.18$pm$0.05, and $i$-$z$ = 0.01$pm$0.07, colors typical of comets. We set a spectroscopic upper limit to the production of H$_2$O gas of $sim$80 kg/s. Improving the orbital solution for LD$_2$ with our observations, we determine that the long-term orbit of LD$_2$ is that of a typical Jupiter Family Comet having close encounters with Jupiter coming within $sim$0.5 Hill radius in the last $sim$3 y to within 0.8 Hill radius in $sim$9 y and has a 95$\%$ chance of being ejected from the Solar System in $<$ 10 Myr.
Source arXiv, 2011.03782
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica