November 2021 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 8987] ASASSN-21ux: SU UMa star?
by Taichi Kato 18 Nov '21

18 Nov '21

ASASSN-21ux: SU UMa star? Past ZTF data show some hint of an SU UMa star. YYYYMMDD(UT) mag observer 20211116.6509 15.87C (Masayuki Moriyama)

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[vsnet-newvar 8986] ASASSN-21un smoothly fading
by Taichi Kato 18 Nov '21

18 Nov '21

ASASSN-21un smoothly fading The light curve resembles a superoutburst of a WZ Sge star. Itoh-san reported time-resolved photometry on two nights (Nov. 10 and 11) without detectable superhumps. YYYYMMDD(UT) mag observer 20211105.5003 14.977zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211107.4573 15.320zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211113.676 16.27C (Hiroshi Itoh) 20211113.842 16.35C (Hiroshi Itoh) 20211116.7049 167:C (Masayuki Moriyama)

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[vsnet-newvar 8985] Gaia21fcw further brightening
by Taichi Kato 17 Nov '21

17 Nov '21

Gaia21fcw further brightening YYYYMMDD(UT) mag observer 20211104.2462 17.410zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211104.2471 17.423zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.1553 17.284zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.3030 17.231zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211106.3035 17.230zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211108.2198 16.561zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211108.2203 16.547zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211108.2238 16.535zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.2421 16.036zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.2426 16.020zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.2585 16.045zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211114.5755 151C (Masayuki Moriyama)

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[vsnet-newvar 8984] ASASSN-17pn outburst?
by Taichi Kato 17 Nov '21

17 Nov '21

ASASSN-17pn outburst? Or noise? YYYYMMDD(UT) mag observer 20211103.7664 <165c (Yutaka Maeda) 20211104.7567 <162c (Yutaka Maeda) 20211106.7638 <164c (Yutaka Maeda) 20211107.8091 <159cG (Yutaka Maeda) 20211114.7694 <154c (Yutaka Maeda) 20211115.7574 126:c (Yutaka Maeda)

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[vsnet-newvar 8983] ASASSN-13bo most likely superoutburst
by Taichi Kato 17 Nov '21

17 Nov '21

ASASSN-13bo most likely superoutburst Not well observed during a past superoutburst. YYYYMMDD(UT) mag observer 20211031.6677 <160c (Yutaka Maeda) 20211101.6777 <166C (Masayuki Moriyama) 20211101.6817 <160c (Yutaka Maeda) 20211102.6553 <157c (Yutaka Maeda) 20211103.6606 <154c (Yutaka Maeda) 20211104.6505 <161c (Yutaka Maeda) 20211106.6596 <159c (Yutaka Maeda) 20211114.6563 148:c (Yutaka Maeda) 20211115.6502 151:cG (Yutaka Maeda)

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[vsnet-newvar 8982] ASASSN-21uy
by Taichi Kato 16 Nov '21

16 Nov '21

ASASSN-21uy ASASSN-21uy --- ------- 23:34:19.76 -36:45:26.3 2021-11-14.16 13.95 SDSS DSS VIZIER ------- CV candidate, matches to GAIA DR2 G=20.3, g>17.5 on 2021-11-13.15, g=14.3 on 2021-11-14.17, g=14.2 on 2021-11-14.19. ASASSN-21uy 20211113.15 <175g ASN ASASSN-21uy 20211114.17 143g ASN ASASSN-21uy 20211114.19 142g ASN 233419.754 -364526.32 (2000.0) Gaia_DR2_6539072280638089984 plx=2.847(1.019) dismod=7.7 pmra=18.948(1.149) pmdec=-1.410(1.268) G=20.290 BP=20.299 RP=20.018 233419.755 -364526.32 (2000.0) Gaia_EDR3_6539072280638089984 plx=2.583(0.567) dismod=7.9 pmra=18.152(0.494) pmdec=-1.203(0.699) G=20.220 BP=20.259 RP=20.207

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[vsnet-newvar 8981] CRTS J050526.8+083415 rare outburst
by Taichi Kato 16 Nov '21

16 Nov '21

CRTS J050526.8+083415 rare outburst Not seen in outburst in past ZTF data. YYYYMMDD(UT) mag observer 20211112.3783 16.173zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211114.4053 15.037zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8980] ASASSN-13bd rare outburst
by Taichi Kato 15 Nov '21

15 Nov '21

ASASSN-13bd rare outburst First time since 2013? http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21fec/ Gaia21fec AT2021aesn 2021-11-14 03:16:36 359.99171 -12.90909 14.59 20.67 0.20 unknown 2021-11-14 21:45:13 5.5 mag outburst in CV candidate ASASSN-13bd 235957.996 -125432.68 (2000.0) Gaia_DR2_2421133709694054912 plx=4.258(2.255) dismod=6.9 pmra=20.869(2.914) pmdec=-11.259(1.980) G=20.619 BP=20.789 RP=19.534 235957.998 -125432.68 (2000.0) Gaia_EDR3_2421133709694054912 plx=4.017(1.094) dismod=7.0 pmra=24.424(1.279) pmdec=-9.240(1.155) G=20.576 BP=20.943 RP=19.904 235957.964 -125432.20 (2000.0) GALEX_DR5_6380415586415936295 NUV=21.195(0.164) FUV=21.718(0.250)

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[vsnet-newvar 8979] MASTER OT J204723.04+072759.1 likely superoutburst
by Taichi Kato 15 Nov '21

15 Nov '21

MASTER OT J204723.04+072759.1 likely superoutburst Time-resolved photometry is encouraged. YYYYMMDD(UT) mag observer 20211107.4652 <152cG (Yutaka Maeda) 20211111.1108 15.345zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211112.8542 15.22C (Eddy Muyllaert) 20211112.8566 156cG (Masao Funada) 20211113.1941 15.515zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211113.8958 15.58C (Eddy Muyllaert) 20211113.896 15.34C (Gary Poyner)

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[vsnet-newvar 8978] CRTS J021440.7-265602 outburst
by Taichi Kato 15 Nov '21

15 Nov '21

CRTS J021440.7-265602 outburst Subtype unknown. YYYYMMDD(UT) mag observer 20210902.4201 20.721zg (Zwicky Transient Facility (Masci et al., 2019)) 20210902.4611 20.720zr (Zwicky Transient Facility (Masci et al., 2019)) 20211114.2318 16.296zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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vsnet-newvar November 2021