AG Dra

symbiotic star

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Read more about Alert Notice 631: Coverage requested for current outburst of AG Dra

Special Notice #70: Brightening of the symbiotic star AG Draconis

October 3, 2007: It was reported in CBET 1091 by U. Munari et al. that the symbiotic star AG Draconis is again in outburst following the decline from its April 2006 bright outburst. They note that the decline apparently halted on 2007 July 07, and has since brightened steadily. Their observations place AG Dra at V = 8.98 on 2007 September 30.8 UT (B = 9.69 and B-V = +0.71). They also note the presence of strong hydrogen and helium emission lines.

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AAVSO Special Notice

symbiotic variable

Read more about Special Notice #70: Brightening of the symbiotic star AG Draconis

Alert Notice 572: AG Dra monitoring requested

April 3, 2017: Dr. Rudolf Gális (Pavel Jozef Šafárik University (Slovakia)) and colleagues have requested AAVSO assistance in observing the symbiotic variable AG Dra. Observations are requested as a follow-up to spectroscopic observations and in order to monitor the system for an anticipated outburst.

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symbiotic variable

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Read more about Alert Notice 572: AG Dra monitoring requested

Special Notice #16: Possible AG Dra Brightening

July 19, 2006

Editor's Note: In the original e-mail, CBET 577 was incorrectly identified as IAUC 577.

U. Munari (Istituto Nazionale di Astrofisica, Astronomical Observatory, Padova) has asked AAVSO observers to monitor AG Dra until the end of its current outburst period.

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AAVSO Special Notice

symbiotic variable

Read more about Special Notice #16: Possible AG Dra Brightening

Alert Notice 188: Outburst of old nova LQ Sgr AND Nova Oph 1994 AND Recent outburst of SS Cyg AND Recent outburst of symbiotic star AG Dra

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 188 (July 14, 1994)

OUTBURST OF OLD NOVA 1822-27 LQ SAGITTARII

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Read more about Alert Notice 188: Outburst of old nova LQ Sgr AND Nova Oph 1994 AND Recent outburst of SS Cyg AND Recent outburst of symbiotic star AG Dra

Alert Notice 195: Symbiotic stars AND Cataclysmic variables AND 1510+83 Z Ursae Minoris

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 195 (November 23, 1994)

SYMBIOTIC STARS

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Read more about Alert Notice 195: Symbiotic stars AND Cataclysmic variables AND 1510+83 Z Ursae Minoris

Alert Notice 211: AAVSO on World Wide Web AND 1958+56 V1028 Cygni in outburst AND Brightening of 1601+67 AG Draconis AND 0409-71 VW Hydri observed with EUVE AND Reminders - GK Persei and T Pyxidis

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 211 (August 1, 1995)

AAVSO ON WORLD WIDE WEB

We are proud to announce that the AAVSO now has a home page available on the World
Wide Web (WWW). The address of our home page on the WWW is:

http://www.aavso.org

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Read more about Alert Notice 211: AAVSO on World Wide Web AND 1958+56 V1028 Cygni in outburst AND Brightening of 1601+67 AG Draconis AND 0409-71 VW Hydri observed with EUVE AND Reminders - GK Persei and T Pyxidis

Alert Notice 399: Nightly monitoring of AG Dra in support of HST calibration observations

July 27, 2009

Edward Smith (STScI) has requested nightly photometric monitoring of the symbiotic star AG Draconis during the period 2009 August 2, and tentatively scheduled to continue through mid-September 2009.

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Read more about Alert Notice 399: Nightly monitoring of AG Dra in support of HST calibration observations

Alert Notice 485: AG Dra monitoring requested for multiwavelength campaign

June 20, 2013: Dr. Andrea Dupree (Harvard-Smithsonian Center for Astrophysics) has requested AAVSO monitoring of the symbiotic variable AG Draconis from now through at least September 2013 for correlation with upcoming Chandra x-ray and HST ultraviolet observations.

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