YSO

Alert Notice 710: Monitoring requested for UXOR ASASSN-V J181654.06-202117.6

Note: This campaign has been concluded as of 28 October 2020, BUT a new campaign from the SAME ASTRONOMER requesting coverage of the SAME TARGET is announced in AAVSO Alert Notice 723.  -  Elizabeth O. Waagen, 28 October 2020

July 14, 2020

Alert Notice 693: V582 Mon monitoring requested

Note: Please continue coverage of V582 Mon until further notice.  -  Elizabeth O. Waagen, 1 February 2021

January 24, 2020

AAVSO Forum threads (scroll to the bottom of a thread for latest posts):
  -   Campaigns and Observing Reports: https://www.aavso.org/v582-mon-campaign-2020
  -   Young Stellar Objects: https://www.aavso.org/v582-mon-campaign-2020-01

Alert Notice 641: V1490 Cyg multiwavelength campaign

July 24, 2018: Dr. Dirk Froebrich (University of Kent) has requested AAVSO observations to support their upcoming observations of V1490 Cyg. He writes:

"Background: We have recently discovered that the young star V1490 Cyg (situated in the Pelican Nebula IC 5070) is periodically occulted by material in its circumstellar disk(*). Our light-curves indicate a period of about 32 days, and the obscurations are comparable to UX-Ori type eclipses.

Alert Notice 621: Optical monitoring of NSV 24045 = HD 163296

March 15, 2018: Evan A. Rich (Ph.D. candidate, University of Oklahoma), and Drs. John Wisniewski (University of Oklahoma), John Tobin (University of Oklahoma), Carol Grady (Goddard Space Flight Center), and Mike Sitko (University of Cincinnati) have requested AAVSO assistance in monitoring the bright (6.9 V) Young Stellar Object NSV 24045 (HD 163296) from now through September 2018.

The YSO Zoo

...and welcome to the Zoo!

Part of the reason why a YSO section is needed is to try and make some sense of how the different types of variable star fit into some sort of scheme. Should we view the various types as distinct, or should we look at behaviour instead? Pursuing the zoo theme for a while, how do the various types of YSO fit into the interstellar ecosystem?