- vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 26940] GDS_J1830235-135539: a new symbiotic nova in Scutum:
by FIDRICH Robert 24 Sep '22

24 Sep '22

GDS_J1830235-135539: a new symbiotic nova in Scutum: coordinates: 18 30 23.57 -13 55 39.9 ATel #15623: Spectroscopic confirmation of recent brightening of GDS J1830235-135539 as a symbiotic nova and ASASSN-22lk as a large-amplitude dwarf nova https://www.astronomerstelegram.org/?read=15623 VSX: https://www.aavso.org/vsx/index.php?view=detail.top&oid=456166 Light curve and spectrum: www.kusastro.kyoto-u.ac.jp/~kentagch/atel/GDS_J1830235-135539.pdf Clear skies, Robert

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[vsnet-alert 26939] ASASSN-22lu
by Naoto Kojiguchi 23 Sep '22

23 Sep '22

ASASSN-22lu ASASSN-22lu --- ------- 5:10:46.97 -43:46:44.3 2022-09-22.24 16.56 SDSS DSS VIZIER ------- CV candidate, matches to DES g=20.9, g>17.6 on 2022-09-21.22, g=16.9 on 2022-09-22.24 051046.938 -434645.084 Gaia_DR2_4812259925999434752 Plx=0.919(0.7772) dismod=10.2 pmRA=2.557(1.803) pmDE=-7.189(1.523) G=20.543(0.019) BP-RP=0.1551 E(g-r)=-- E(B-V)=-- Ag=-- Ar=-- Ai=-- 051046.935 -434644.995 Gaia_EDR3_4812259925999434752 Plx=0.7658(0.4284) dismod=10.6 PM=6.146 pmRA=2.153(0.606) pmDE=-5.757(0.525) G=20.34165(0.015978) BP-RP=0.442415 E(g-r)=-- E(B-V)=-- Ag=-- Ar=-- Ai=-- 051046.891 -434644.936 GALEXJ051046.8-434644 FUV=21.5825(0.4516) NUV=20.6412(0.1089) 051046.932 -434645.088 DESJ051046.93-434645.0 g=21.4362 r=21.3153 i=21.2731 z=20.8001 Y=21.525 051046.938 -434645.095 DESJ051046.93-434645.0 g=20.8737 r=20.7928 i=20.86 z=20.3535 Y=20.5584 MPChecker NO DATA ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/88c869c3-b8fd-44b4-ad31-0280f… ASASSN-22lu 20220921.231 <16.773g ASN ASASSN-22lu 20220922.244 16.624g ASN ASASSN-22lu 20220922.244 16.706g ASN ASASSN-22lu 20220922.246 <16.787g ASN ASASSN-22lu 20220922.246 16.921g ASN ASASSN-22lu 20220922.247 16.482g ASN ASASSN-22lu 20220922.247 <16.902g ASN ASASSN-22lu 20220922.248 16.950o ATF ASASSN-22lu 20220922.251 16.981o ATF ASASSN-22lu 20220922.276 16.999o ATF ASASSN-22lu 20220922.288 16.880o ATF ASASSN-22lu 20220923.250 <16.460g ASN ASASSN-22lu 20220923.250 <16.919g ASN ASASSN-22lu 20220923.251 <16.403g ASN ASASSN-22lu 20220923.251 <16.858g ASN ASASSN-22lu 20220923.253 <16.505g ASN ASASSN-22lu 20220923.253 <16.912g ASN

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[vsnet-alert 26938] ASASSN-22ly
by Naoto Kojiguchi 23 Sep '22

23 Sep '22

ASASSN-22ly ASASSN-22ly -- ------- 16:23:16.23 -14:12:43.7 2022-09-23 16.19 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=21.7, g>18.1 on 2022-09-20.75, g=16.7 on 2022-09-22.00, g=16.6 on 2022-09-23.00 162316.272 -141244.866 Gaia_EDR3_4328966708088786688 Plx=--(--) dismod=-- PM=-- pmRA=--(--) pmDE=--(--) G=20.913553(0.057972) BP-RP=0.230354 E(g-r)=-- E(B-V)=-- Ag=-- Ar=-- Ai=-- 162316.281 -141244.148 PS1_DR1_90942458176395674 g=21.6796(0.1868) r=19.372(0.0524) i=--(--) z=--(--) y=--(--) 162316.268 -141244.837 PS1_DR1_90942458178195407 g=21.4808(0.0443) r=21.5214(0.0584) i=21.367(0.0797) z=20.6438(0.0997) y=20.3363(0.1666) 162316.267 -141244.802 SDSSJ162316.26-141244.8 u=21.728(0.176) g=21.575(0.061) r=21.439(0.073) i=21.110(0.084) z=22.298(0.761) MPChecker NO DATA ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/13b34540-5d6b-4d36-80f1-b5b36… #2022 outburst ASASSN-22ly 20220920.760 <16.963g ASN ASASSN-22ly 20220922.002 16.535g ASN ASASSN-22ly 20220922.003 16.555g ASN ASASSN-22ly 20220922.004 16.395g ASN ASASSN-22ly 20220923.006 16.415g ASN ASASSN-22ly 20220923.007 16.436g ASN ASASSN-22ly 20220923.008 16.276g ASN #2008 mini outburst ASASSN-22ly 20080314.330 <14.50V AS3 ASASSN-22ly 20080315.502 19.650C CRT ASASSN-22ly 20080315.507 19.610C CRT ASASSN-22ly 20080315.512 19.430C CRT ASASSN-22ly 20080315.517 19.570C CRT ASASSN-22ly 20080317.356 <14.50V AS3 ASASSN-22ly 20080320.347 <14.50V AS3 ASASSN-22ly 20080323.315 <14.50V AS3 ASASSN-22ly 20080329.370 <14.50V AS3 ASASSN-22ly 20080401.308 <14.50V AS3 ASASSN-22ly 20080404.304 <14.50V AS3 ASASSN-22ly 20080407.298 <14.50V AS3 ASASSN-22ly 20080410.286 <14.50V AS3 ASASSN-22ly 20080413.286 <14.50V AS3 ASASSN-22ly 20080413.418 19.140C CRT ASASSN-22ly 20080413.425 18.980C CRT ASASSN-22ly 20080413.431 19.000C CRT ASASSN-22ly 20080413.438 19.030C CRT ASASSN-22ly 20080415.329 <14.50V AS3 ASASSN-22ly 20080417.284 <14.50V AS3 ASASSN-22ly 20080419.285 <14.50V AS3 ASASSN-22ly 20080426.259 <14.50V AS3 ASASSN-22ly 20080429.302 <14.50:V AS3 ASASSN-22ly 20080502.230 <14.50V AS3 ASASSN-22ly 20080503.386 19.750C CRT ASASSN-22ly 20080503.392 19.500C CRT ASASSN-22ly 20080503.397 19.480C CRT ASASSN-22ly 20080503.403 19.680C CRT ASASSN-22ly 20080504.288 <14.50V AS3 ASASSN-22ly 20080506.360 <14.50V AS3 ASASSN-22ly 20080509.204 <14.50V AS3 ASASSN-22ly 20080511.245 <14.50V AS3 ASASSN-22ly 20080516.205 <14.50V AS3 ASASSN-22ly 20080523.220 <14.50V AS3 ASASSN-22ly 20080525.209 <14.50V AS3 ASASSN-22ly 20080528.366 20.400C CRT ASASSN-22ly 20080528.374 20.370C CRT ASASSN-22ly 20080528.381 20.360C CRT ASASSN-22ly 20080528.388 20.700C CRT ASASSN-22ly 20080529.274 <14.50V AS3 #2013 mini outburst ASASSN-22ly 20130429.465 <14.893V ASN ASASSN-22ly 20130502.536 21.433rP PS1 ASASSN-22ly 20130502.546 21.372rP PS1 ASASSN-22ly 20130502.568 21.470iP PS1 ASASSN-22ly 20130508.491 21.461gP PS1 ASASSN-22ly 20130508.503 21.589gP PS1 ASASSN-22ly 20130516.492 21.513gP PS1 ASASSN-22ly 20130522.425 <16.194V ASN ASASSN-22ly 20130522.427 <16.219V ASN ASASSN-22ly 20130604.316 18.500C CRT ASASSN-22ly 20130604.322 18.400C CRT ASASSN-22ly 20130604.328 18.370C CRT ASASSN-22ly 20130604.334 18.520C CRT ASASSN-22ly 20130609.392 <17.065V ASN #2021 mini outburst ASASSN-22ly 20210106.668 <16.242g ASN ASASSN-22ly 20210115.566 19.316zr ZTF ASASSN-22ly 20210115.568 19.181zr ZTF ASASSN-22ly 20210116.571 19.739zr ZTF ASASSN-22ly 20210116.573 19.410zr ZTF ASASSN-22ly 20210117.371 <16.030g ASN ASASSN-22ly 20210117.373 <15.941g ASN ASASSN-22ly 20210117.374 <15.692g ASN ASASSN-22ly 20210117.558 19.729zr ZTF ASASSN-22ly 20210117.563 19.895zr ZTF ASASSN-22ly 20210117.566 19.846zr ZTF ASASSN-22ly 20210117.568 19.969zr ZTF ASASSN-22ly 20210118.561 20.130zr ZTF ASASSN-22ly 20210118.565 20.050zr ZTF ASASSN-22ly 20210124.361 <16.783g ASN

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[vsnet-alert 26937] ASASSN-22lx
by Naoto Kojiguchi 23 Sep '22

23 Sep '22

ASASSN-22lx Large outburst amplitude of 7.5 mag. Possible WZ Sge-type object. ASASSN-22lx --- ------- 18:57:13.61 -45:57:5.3 2022-09-23.06 14.18 SDSS DSS VIZIER ------- CV candidate, no Vizier match, g>18.7 on 2022-09-21.07, g=15.4 on 2022-09-22.05, g=14.5 on 2022-09-23.05 IDs: [I/353/gsc242] The Guide Star Catalog, Version 2.4.2 (GSC2.4.2) (STScI, 2020) 185713.754 -455704.74 GSC2_SC9H092903 epoch=1976.640 Bj=22.055201 FUV=21.323 NUV=21.860 [II/335/galex_ais] Revised catalog of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017) 185713.808 -455703.72 GALEX_J185713.8-455703 FUV=21.3233(0.1956) NUV=21.8604(0.3036) ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/27947cd5-5a35-4e50-bd67-f0782… ASASSN-22lx 20220919.796 20.527cy ATF ASASSN-22lx 20220921.070 17.394g ASN ASASSN-22lx 20220922.031 15.838o ATF ASASSN-22lx 20220922.054 15.114g ASN ASASSN-22lx 20220923.059 14.413g ASN

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[vsnet-alert 26936] CY Ori: bright dwarf nova in Orion
by Taichi Kato 22 Sep '22

22 Sep '22

CY Ori: bright dwarf nova in Orion ASAS-SN data: https://asas-sn.osu.edu/sky-patrol/coordinate/50a88cf6-44c8-49b1-a409-8dacb… One of the brightest dwarf novae in Orion. Z Cam-type variable. The 2019 Oct-2020 Jan. standstill slowly brightened with some oscillations. Could be a signature of an IW And star, although typical IW And-type behavior has not yet been recorded. Long, bright outburst in 2021 Aug.-Sep. followed by smaller outbursts. The behavior is somewhat atypical and would require more observations. TESS data show very clear double-wave modulations (ellipsoidal with O'Connell effect) with Porb=0.279969(4) d. 061448.742 +093427.67 (2000.0) Gaia_DR2_3329059422060781184 plx=2.338(0.057) dismod=8.2 pmra=2.610(0.091) pmdec=-7.893(0.076) G=12.504 BP=12.744 RP=12.082 061448.742 +093427.67 (2000.0) Gaia_EDR3_3329059422060781184 plx=2.298(0.059) dismod=8.2 pmra=1.727(0.060) pmdec=-8.005(0.049) G=12.418 BP=12.632 RP=12.008

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[vsnet-alert 26935] ATLAS22beux
by Taichi Kato 21 Sep '22

21 Sep '22

ATLAS22beux https://www.aavso.org/vsx/index.php?view=detail.top&oid=2344694 There is a GALEX counterpart. 062908.682 -712937.92 (2000.0) GALEX_DR5_6385763624932083805 NUV=21.265(0.381) FUV=21.777(0.450)

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[vsnet-alert 26934] ASASSN-19zy rare outburst
by Taichi Kato 20 Sep '22

20 Sep '22

ASASSN-19zy rare outburst Past superoutburst in 2019. Superhumps were not well covered by observations. YYYYMMDD(UT) mag observer 20220913.6200 <154c (Yutaka Maeda) 20220915.6800 <167c (Yutaka Maeda) 20220919.6499 146c (Yutaka Maeda)

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[vsnet-alert 26933] ASASSN-22lj
by Taichi Kato 20 Sep '22

20 Sep '22

ASASSN-22lj Also a bright, large-amplitude dwarf nova. ASASSN-22lj -- ------- 8:24:18.55 -24:57:37.3 2022-09-18.37 12.82 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=19.5, g>17.2 on 2022-09-08.13, g=12.3 on 2022-09-14.15, g=12.5 on 2022-09-15.15, g=13.2 on 2022-09-18.37 082418.608 -245737.68 (2000.0) Gaia_DR2_5696080563913025024 plx=2.306(0.309) dismod=8.2 pmra=7.197(0.469) pmdec=-13.579(0.441) G=19.397 BP=19.320 RP=19.121 082418.608 -245737.68 (2000.0) Gaia_EDR3_5696080563913025024 plx=2.565(0.229) dismod=8.0 pmra=7.131(0.190) pmdec=-13.754(0.193) G=19.345 BP=19.443 RP=19.193

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[vsnet-alert 26932] ASASSN-22lk: bright transient
by Taichi Kato 20 Sep '22

20 Sep '22

ASASSN-22lk: bright transient ASASSN-22lk -- ------- 18:54:33.41 11:56:6.1 2022-09-18.19 11.63 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=20.5, g>17.7 on 2022-09-17.22, g=12.1 on 2022-09-18.18 185433.474 +115606.25 (2000.0) Gaia_DR2_4504346470647563008 plx=5.407(0.857) dismod=6.3 pmra=-2.475(1.526) pmdec=-18.109(2.153) G=20.298 BP=20.304 RP=19.989 185433.474 +115606.25 (2000.0) Gaia_EDR3_4504346470647563008 plx=3.328(0.642) dismod=7.4 pmra=-1.831(0.593) pmdec=-13.594(0.604) G=20.258 BP=20.417 RP=20.390

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[vsnet-alert 26930] ZTF22abfjnpj: new SU UMa-type dwarf nova
by Yusuke Tampo 16 Sep '22

16 Sep '22

ZTF22abfjnpj: new SU UMa-type dwarf nova Kyoto Univ. team and Moriyama-san reported the observations of ZTF22abfjnpj = AT 2022tru. This object was discovered by ZTF on 7th Sep. with the outburst amplitude of 8 mag, and spectroscopically classified as a CV by Dr. Claudio Balcon. https://www.wis-tns.org/object/2022tru Our observation at Kyoto Univ. on 15th Sep. detected a 0.2-mag superhump with a period of ~0.056 d. Therefore, ZTF22abfjnpj is likely a SU UMa-type dwarf nova, and also can be a WZ Sge-type dwarf nova based on its large outburst amplitude and short superhump period. Time-resolved observations are encouraged to determine its superhump periods. Best, Yusuke -- ---------------------------------------------- 京都大学大学院理学研究科宇宙物理学教室 D2 Kyoto University, Graduate School of Department of Astronomy, PhD student 反保雄介 Yusuke TAMPO MAIL: tampo(a)kusastro.kyoto-u.ac.jp ----------------------------------------------

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