- vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 17027] Re: Gaia23azk
by Taichi Kato 08 Mar '23

08 Mar '23

Re: Gaia23azk No past activity in ASAS-SN/ATLAS. https://asas-sn.osu.edu/sky-patrol/coordinate/9c515a17-75cd-480d-98e9-f5a7c…

1 0

[vsnet-campaign-dn 17026] ASASSN-15cv bright outburst?
by Taichi Kato 08 Mar '23

08 Mar '23

ASASSN-15cv bright outburst? Short outburst in 2019. YYYYMMDD(UT) mag observer 20230303.978 <16.30C (Gary Poyner) 20230303.9795 <162cG (Masao Funada) 20230304.5094 <158c (Yutaka Maeda) 20230305.5258 <157c (Yutaka Maeda) 20230306.5525 148:cG (Yutaka Maeda)

1 0

[vsnet-campaign-dn 17025] Wils_SDSSJ075107.50+300628.4: likely superoutburst
by Taichi Kato 08 Mar '23

08 Mar '23

Wils_SDSSJ075107.50+300628.4: likely superoutburst Almost superoutburst-only object with a short supercycle. Superoutburst? in 2022 Oct. YYYYMMDD(UT) mag observer 20230302.5894 <156c (Yutaka Maeda) 20230304.5793 <151c (Yutaka Maeda) 20230305.5957 144c (Yutaka Maeda) 20230306.6223 149:c (Yutaka Maeda)

1 0

[vsnet-campaign-dn 17024] Re: Gaia23azk
by Taichi Kato 08 Mar '23

08 Mar '23

Re: Gaia23azk > Bright transient. What is it? Reddened nova? Emission line in the spectrum? YYYYMMDD(UT) mag observer 20230306.6405 15.094o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6446 15.081o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6519 15.044o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6626 15.040o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230307.3733 14.790o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230307.3751 14.869o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230307.3917 14.823o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

1 0

[vsnet-campaign-dn 17023] Gaia23azk
by Taichi Kato 07 Mar '23

07 Mar '23

Gaia23azk Bright transient. What is it? http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23azk/ Gaia23azk AT2023ctx 2023-03-05 12:55:35 286.80714 9.48159 13.85 unknown 2023-03-07 12:49:08 Apparently hostless red transient

1 0

[vsnet-campaign-dn 17022] Gaia23azp
by Taichi Kato 07 Mar '23

07 Mar '23

Gaia23azp http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23azp/ Gaia23azp AT2023ctz 2023-03-05 16:51:35 300.10042 19.99443 15.33 20.53 0.13 unknown 2023-03-07 12:51:14 ~5 mag outburst in Gaia source

1 0

[vsnet-campaign-dn 17021] ASASSN-14aj likely superoutburst
by Taichi Kato 07 Mar '23

07 Mar '23

ASASSN-14aj likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230302.8076 <149c (Yutaka Maeda) 20230304.7968 <143c (Yutaka Maeda) 20230305.8151 150c (Yutaka Maeda) 20230305.8151 150c (Yutaka Maeda)

1 0

[vsnet-campaign-dn 17020] CRTS J022411.4+355919 bright outburst
by Taichi Kato 06 Mar '23

06 Mar '23

CRTS J022411.4+355919 bright outburst May be a superoutburst. http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23azi/ Gaia23azi AT2023ctt 2023-03-04 21:29:14 36.04769 35.98848 15.78 18.86 0.67 unknown 2023-03-06 08:23:39

1 0

[vsnet-campaign-dn 17019] SSSJ090619.2-275831: superhumps
by Taichi Kato 06 Mar '23

06 Mar '23

SSSJ090619.2-275831: superhumps Josch Hambsch has reported further observations. The data confirm the presence of large-amplitude superhumps. Although the data are still insufficient, a short superhump period (maybe slightly above 0.05 d, many aliases) is suggested. The object may be eclipsing. Further observations are encouraged.

1 0

[vsnet-campaign-dn 17018] V589 Her: not an SU UMa star?
by Taichi Kato 06 Mar '23

06 Mar '23

V589 Her: not an SU UMa star? > [vsnet-alert 27477] V589 Her possible superoutburst The object faded rather quickly. ATLAS data since 2016 did not show superoutbursts. The SU UMa-type classification was based on Vanmunter in 2002. I examined the AAVSO data and the profile of the claimed superhumps did not look like very stable, and the object faded too rapidly (0.2 mag/d) for a superoutburst. The classification requires independent observation during a long outburst (but such an one is missing at least recently). YYYYMMDD(UT) mag observer 20230225.7745 <154c (Yutaka Maeda) 20230226.3670 18.409c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230226.3851 18.594c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230226.3900 18.425c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230226.6306 18.390c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230226.6347 18.441c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230226.6496 19.112c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230226.7276 <160c (Yutaka Maeda) 20230227.7272 <156c (Yutaka Maeda) 20230302.3532 15.413c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.3568 15.398c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.3631 15.413c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.7736 148:c (Yutaka Maeda) 20230302.8352 151C (Masayuki Moriyama) 20230304.188 15.89C (Gary Poyner) 20230304.7627 <150c (Yutaka Maeda) 20230305.163 17.07C (Gary Poyner)

1 0