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Special Notice #393: Correction to Special Notice #392 [ASASSN-14lp]

December 11, 2014: In AAVSO Special Notice #392, the name of the supernova discovered in NGC 4666 was given as ASASSN-141p. It should have been ASASSN-14lp. That is to say, the text following the dash should
be "fourteen ell pee" and not "fourteen one pee".

Please create charts and submit observations using the name ASASSN-14lp.

Sincere apologies for the error!

This AAVSO Special Notice was compiled by Elizabeth O. Waagen.

Special Notice #392: ASASSN-14lp = Type Ia Supernova in NGC 4666 (Virgo)

December 11, 2014: T. W.-S. Holoien et al. announce in The Astronomer's Telegram (ATel) #6795 (http://www.astronomerstelegram.org/?read=6795) the discovery of a transient in NGC 4666 at magnitude 14.3 V on 2014 December 9.61 UT. The discovery was made in the course of the All Sky Automated Survey for SuperNovae (ASASSN) search, and the object assigned the name ASASSN-14lp. ASASSN-14lp was not seen (<15.3 V) in poor-quality ASASSN images obtained on 2104 Dec. 08.35 UT.

2016 JD Calendar

The 2016 Julian Day calendar is now available for your viewing or downloading pleasure.

 

Datos de la BAAVSS ahora disponibles a través de la AAVSO

La American Association of Variable Star Observers (AAVSO) y la British Astronomical Association Variable Star Section (BAAVSS) tienen el agrado de anunciar que el archivo de observaciones de estrellas variables de la BAAVSS ya está disponible a través del sitio web de AAVSO. Los archivos de la BAAVSS cuentan con más de 2,5 millones de observaciones de estrellas variables realizadas en su mayoría por astrónomos aficionados de todo el mundo durante los pasados 150 años.

Special Notice #391: Targets Remaining in Northern Dwarf Novae Campaign

December 2, 2014: AAVSO Alert Notice 505 (http://www.aavso.org/aavso-alert-notice-505) announced the campaign on several northern dwarf novae by Deanne Coppejans and colleagues. This campaign, searching for radio jets in dwarf novae, has been moving very quickly! Thanks to your observations and timely notifications, three of the five sets of VLA observations available for the targets have been used on Z Cam, RX And, and YZ Cnc. The PI is extremely appreciative and thanks you all for your excellent work.

BAAVSS data now available through the AAVSO

The American Association of Variable Star Observers (AAVSO) and the British Astronomical Association Variable Star Section (BAAVSS) are pleased to announce that the variable star observation archive of the BAAVSS is now available through the website of the AAVSO.  The BAAVSS archives comprise over 2.5 million variable star observations made mostly by amateur astronomers world-wide over the past 150 years.  These data now join the archives of the AAVSO in the AAVSO International Database, which consists of over 25 million variable star observations made by observe

New eJAAVSO preprint: Recent minima of 161 EB stars

ejaavso291

Recent Minima of 161 Eclipsing Binary Stars

   pdf

Gerard Samolyk

P.O. Box 20677, Greenfield, WI 53220

Received November 1, 2014; accepted November 1, 2014

Abstract

New eJAAVSO preprint: Observations of novae from ROAD

ejaavso290

Observations of Novae From ROAD

   pdf

Franz-Josef Hambsch

Oude Bleken 12, B- 2400 Mol, Belgium

Presented at the 103rd Spring Meeting of the AAVSO, Big Bear Lake, CA,
June 13, 2014

Received August 11, 2014; revised September 9, 2014; accepted September 10, 2014

Abstract

New eJAAVSO preprint: Pulsating star period-amplitude relation

ejaavso289

eJAAVSO

Does the Period of a Pulsating Star Depend on its Amplitude?

   pdf

John R. Percy
Jeong Yeon Yook

Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4, Canada

Received July 8, 2014; revised October 10, 2014; accepted October 10, 2014

New eJAAVSO preprint: V1073 Herculis and the Possible Detection of a Dwarf Companion

ejaavso288

First Photometric Study of the Short Period Solar Type Binary V1073 Herculis and the Possible Detection of a Dwarf Companion

   pdf

Ronald G. Samec
Faculty Research Associate, Pisgah Astronomical Research Institute, One Pari Drive, Rosman, NC 28772

Pages

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