【Overview】
曇天が続きやっと今年に入ることができた。ただ、2ヶ月毎のまとめは先回と同じ。この２カ月、わい新星の発見がいくつかあった。相変わらず、国内の捜索者の皆さんは頑張っておられるようだ。特記すべきは、V386 Serの outburstで、向井さんと西村さんが増光を確認した。10等台まで増光し、ここまでの増光は過去に記録が無いらしい。もともと、VSXには、 NL+ZZ/GWLIB で変光範囲は、18.9-19.2(V)となっていたが、UWZ+ZZ/GWLIBに見直されている。
ASAS-SNがしっかりサーベイしているので、それより少し早い発見が何になるのだろうか？と自問自答しているが、なかなか止められない。個人的にはサーベイの中で、VSXに未登録の変光星を2個発見した。スイスにお住まいの笠井さんによる周期解析やご尽力でVSXに登録された。ここでもお礼を申し上げたい。20年前は、比較的少ない観測で変光星として登録されていたが、最近は難しいようだ。何か登録のためのフォーマットができればよいのだが。
ASAS-SNが新変光星の登録も積極的にやってるいる。過去発見した新変光星がいくつもASASSNの名前になっている。ただこれはまだ、アマチュアのやることかもしれない。また、登録の変光星で光度にPがついている、いわゆる写真光度のものは、古いので観測データからの更新も必要だと思う。
【CBAT ”T O C P”から】
http://www.cbat.eps.harvard.edu/unconf/tocp.html
①TCP J04364690+2642311 2019 01 11.5556* 04 36 46.90 +26 42 31.1 13.4 U Tau
Discovered by T. Kojima, Gunma-ken, Japan, with five second exposure using Canon
EOS 6D digital camera + 200-mm f/3.2 lens under the limiting mag = 14.2, who writes nothing is visible at this location on a frame taken on 2019 Jan. 10 UT with limit mag.= 13.7 and also there is a faint star (Bmag.= 20.0, Rmag.= 17.9) on the catalog.
-->>Flare star
②TCP J16103359-0102227 2019 01 18.8433* 16 10 33.59 -01 02 22.7 10.4 U Ser
Discovered by H. Nishimura, Shizuoka-ken, Japan, on three frames with 30 second exposure using a Canon EOS 6D digital camera + 200-mm f/3.2 lens under the limiting mag = 16, who writes nothing is visible at this location on a frame taken on the last morning, 2019 Jan. 17.841 UT with same limit mag. and there is a variable star (mag =
18.8 to 19.2) in AAVSO catalog.
2019 01 18.83853
Seiichi Yoshida (http://www.aerith.net) reported ~1 hour earlier that "Masaru Mukai found an outburst of V386 Ser up to 10.7 mag at Jan. 18.83853 (UT). It was faint on Jan. 17." (vsnet-alert message #22943, 2019 Jan. 18 at 22:04:57 UTC). This is the first recorded outburst of V386 Serpentis, a likely WZ Sge-type dwarf nova. Time-resolved photometry is urgently required. --- Patrick Schmeer (Saarbrucken-schmisheim, Germany)
-->>V386 Ser outburst
＜１月24日 撮影＞
③TCP J06373299-0935420 2019 02 21.4516* 06 37 32.99 -09 35 42.0 10.4 U Mon
Discovered by S. Kaneko, Kakegawa, Shizuoka-ken, Japan, with on 10-s exposure on eight frames using Canon 6D digital camera + 200-mm f/2.8 lens under the limiting mag =14.5, who writes that nothing is visible at this location on a frame taken on 2019 Feb. 20.447 UT with limit mag.= 14.7.
2019 02 21.78
Meanwhile the All-Sky Automated Survey for Supernovae reported (on "Thu Feb 21 12:48:54 EST") this transient as ASASSN-19de: "RA 06:37:32.98, Dec -09:35:42.4, discovery 2019-02-21.15 UT, gmag. 12.16; bright CV candidate, matches to PS1 g=19.5,
g>17.3 on 2019-02-13.29, g=12.6 on 2019-02-21.16." http://www.astronomy.ohio-state.edu/~assassin/transients.html --- Patrick Schmeer (Saarbrucken-Bischmisheim,
Germany)
-->>UGWZ 10.2 - 19.4 V
【ASAS-SN Transients】より
http://www.astronomy.ohio-state.edu/~assassin/transients.html
・フレアーが多く受かっていて驚き！CVは黄色
①ASASSN-19ct -->> UGSU/IBWD 13.4 - 17.5 V
②ASASSN-19de =TCPJ06373299-0935420 -->> UGWZ 10.2 - 19.4 V
【増光に気づいた変光星】 VSOLJにレポート済
①新変光星 2MASS J17223780-2325098 https://www.aavso.org/vsx/index.php?view=detail.top&oid=686686
②新変光星 2MASS J17115875-2310170 https://www.aavso.org/vsx/index.php?view=detail.top&oid=686738
<変光星名><年月月日時分><光度x10><観測者コード><変光範囲・型>
ANDFX 201901031843 117c Ymo 14.2-<17.2p M
ANDFX 201901081843 118c Ymo 14.2-<17.2p M
AQLV1318 201901262928 104c Ymo 14.5-<15.5P LB:
ASASJ065528+2725.4 201901141938 114c Ymo 8.977(1.517)Ic M
ASASSN-VJ014012.65+553549.7 201901031844 119c Ymo 12.78-13.49V L
ASASSN-VJ060640.92+253915.1 201901141936 113c Ymo 12.47-12.81V SR
CAMPS 201901081849 121c Ymo 12.58-13.55 EB
CASV414 201901081844 105c Ymo 14.4-17.0P M
CASV438 201901081843 118c Ymo 14.9-19B M
CEPDF 201901031841 114c Ymo 14.9-<16.5P M
CYGLM 201901021828 106c Ymo 13.8-<15.5P M
CYGLM 201901031830 106c Ymo 13.8-<15.5P M
CYGV1873 201901021828 114c Ymo 14.8-<18.4B M
CYGV1873 201901031830 116c Ymo 14.8-<18.4B M
CYGV1873 201901081832 116c Ymo 14.8-<18.4B M
CYGV1940 201901021834 117c Ymo 14.8-18.0B M
CYGV2339 201901021832 101c Ymo 10.7-13.2V SRA
CYGV2339 201901031837 102c Ymo 10.7-13.2V SRA
CYGV2339 201901081837 100c Ymo 10.7-13.2V SRA
CYGV2356 201901031839 111c Ymo 10.8-<16.0V M
CYGV2356 201901081840 110c Ymo 10.8-<16.0V M
CYGV479 201901081837 111c Ymo 11.0-15.4p M
CYGV506 201901081827 115c Ymo 13.6-<17.4p M
LACDS 201901031841 102c Ymo 13.2-<17.3P M
LYRES 201901081816 108c Ymo 13.6-16.0P SRA
LYRES 201901132939 102c Ymo 13.6-16.0P SRA
LYRES 201901182931 104c Ymo 13.6-16.0P SRA
LYRES 201901262919 105c Ymo 13.6-16.0P SRA
MONMW 201901141941 113c Ymo 11.9-13.7V SRB
MONV562 201901141940 113c Ymo 15.2-<17P M
NSV00622 201901081845 116c Ymo 13.0-13.8p -
NSV11847 201901132940 114c Ymo 12.2-<16.3V M
NSVS3950505 201901081846 115c Ymo 13.06(2.04)R1 EW
NSVSJ0122514+575031 201901021840 111c Ymo 9.662(1.105)R1 M
NSVSJ0122514+575031 201901031844 111c Ymo 9.662(1.105)R1 M
NSVSJ0513254+192528 201901031853 107c Ymo 10.908(2.8)R1 M
NSVSJ1751339-062406 201901262911 114c Ymo 10.151(2.385)R1 L
NSVSJ2151291+384312 201901021835 116c Ymo 10.559(2.578)R1 M
OPHCZ 201901132947 116c Ymo 11.5-<15.2V M
OPHCZ 201901182914 114c Ymo 14.3-<16.5P L:
OPHV1203 201901132949 104c Ymo 15.1-18.9P M
OPHV1203 201901182921 103c Ymo 15.1-18.9P M
OPHV1203 201901202934 104c Ymo 15.1-18.9P M
OPHV1203 201901222936 104c Ymo 15.1-18.9P M
OPHV1203 201901262935 107c Ymo 15.1-18.9P M
OPHV2090 201901132934 108c Ymo 15.0-16P LB:
OPHV2090 201901182926 110c Ymo 15.0-16P LB:
OPHV2090 201901242916 112c Ymo 15.0-16P LB:
OPHV2090 201901262913 109c Ymo 15.0-16P LB:
OPHV450 201901132932 108c Ymo 10.9-14.1V M
OPHV648 201901262915 114c Ymo 12.5-<17.0p M
PERET 201901141923 116c Ymo 12.2-13.7p RRAB
SCOV1562 201901132947 114c Ymo 11.7-<14.6V M
SCOV1562 201901182940 116c Ymo 11.7-<14.6V M
SGRFK 201901132951 91c Ymo 12.5-<16P M
SGRFK 201901182946 91c Ymo 12.5-<16P M
SGRFK 201901202936 92c Ymo 12.5-<16P M
SGRFK 201901222937 92c Ymo 12.5-16P M
SGRFK 201901242935 92c Ymo 12.5-<16P M
VSXJ022854.8+461408 201901081846 119c Ymo 12.90-13.50R1 EW
----------------------------------------------
AURV578 201901301946 117c Ymo 11.2-11.9 LB
MONV503 201901271947 118c Ymo 16.6-<17.5P M
MONV562 201901301950 116c Ymo 15.2-<17P M
NSVSJ1736280+004930 201902012860 116c Ymo 12.7-<16.8V M
NSVSJ1740452-100729 201901312914 120c Ymo 10.558(2.071)R1 M
NSVSJ1751339-062406 201901312913 111c Ymo 10.151(2.385)R1 M
NSVSJ1751339-062406 201902012901 111c Ymo
OPHV1103 201902012905 123c Ymo 14.5-19P M
OPHV1203 201901312910 107c Ymo 15.1-18.9P M
OPHV2090 201901312917 111c Ymo 15.0-16P LB:
OPHV2090 201902012906 109c Ymo
OPHV2843 201902012854 111c Ymo 11.7-<15.0V M
OPHV3293 201902012906 120c Ymo 13.1-14.6V SRB
SCOV1562 201902012853 116c Ymo 11.7-<14.6V M
SGRV4120 201901312919 99c Ymo 0.6-1K M
SGRV4120 201902012911 101c Ymo
ーーーーーーー
2MASSJ17223780-2325098 201805192508 <127c Ymo
2MASSJ17223780-2325098 201902112839 120c Ymo
2MASSJ17223780-2325098 201902172908 119c Ymo
AQLBX 201902172859 108c Ymo 11.3-<15.0V M
ASASJ160952-2508.6 201902112832 118c Ymo 9.632(2.823)Ic M
ASASJ160952-2508.6 201902172828 113c Ymo 9.632(2.823)Ic M
ASASSN-VJ174520.78-172101.1 20190211284 116c Ymo 13.80-<16.6V M
CYGV1469 201902172901 117c Ymo 15.2-17.0p SRB
HERKY 201902112848 120c Ymo 15.3-<17P M
LYRES 201902172849 108c Ymo 13.6-16.0P SRA
NSV11847 201902172851 115c Ymo 12.2-<16.3V M
NSVSJ1718041-061325 201902112837 123c Ymo 12.392(1.626)R1 M
NSVSJ1736280+004930 201902112840 110c Ymo 12.7-<16.8V M
NSVSJ1736280+004930 201902172835 107c Ymo 12.7-<16.8V M
NSVSJ1751339-062406 201902112841 114c Ymo 10.151(2.385)R1 L
NSVSJ1751339-062406 201902172836 115c Ymo 10.151(2.385)R1 L
OPHV1103 201902112844 111c Ymo 11.3-<14.4V M
OPHV1103 201902172838 110c Ymo 11.3-<14.4V M
OPHV1103 201902172840 111c Ymo 14.5-19P M
OPHV1854 201902112837 121c Ymo 12.5-<16.0p M
OPHV1854 201902172832 118c Ymo 12.5-<16.0p M
OPHV2090 201902112845 111c Ymo 15.0-16P LB:
OPHV2090 201902172839 110c Ymo 15.0-16P LB:
OPHV2843 201902112834 112c Ymo 11.7-<15.0V M
OPHV2843 201902172829 110c Ymo 11.7-<15.0V M
SCOV1562 201902112833 121c Ymo 11.7-<14.6V M
SCOV597 201902172909 109c Ymo 14.5-<17.0P M
SGERW 201902172857 100c Ymo 13.0-<16.4P M
SGRV4120 201902112847 101c Ymo 0.6-1K M
SGRV4120 201902172912 99c Ymo 0.6-1K M
SGRV5357 201902172912 115c Ymo 7.7-10.8I M
----------------------------------
2MASSJ16122076-1949568 201903012835 121c Ymo 12.7-<16.0V M
2MASSJ17115875-2310170 201805192509 <127c Ymo New var
2MASSJ17115875-2310170 201903012842 119c Ymo New var
AQLAH 201902282834 118c Ymo 11.7-<16.7V M
AQLAH 201903012853 117c Ymo 11.7-<16.7V M
AQLGG 201903012859 119c Ymo 15.2-<17.4P M
AQLV953 201903012859 117c Ymo 15.5-18.2P M
ASASJ160952-2508.6 201902282815 114c Ymo 9.632(2.823)Ic M
ASASJ160952-2508.6 201903012823 114c Ymo 9.632(2.823)Ic M
ASASSN-VJ174148.51-155041.2 201903012845 115c Ymo 12.49-14.40V SR
ASASSN-VJ174520.78-172101.1 201902282825 119c Ymo 13.80-<16.6V M
CYGFZ 201902282842 109c Ymo 12.0-15.2p M
CYGFZ 201903012903 107c Ymo 12.0-15.2p M
NSVS13876602 201903012848 121c Ymo 12.72(2.56)R1 LPV
NSVS13987339 201902282840 114c Ymo 11.78(1.06)R1 L
NSVS16423894 201902282817 121c Ymo 13.64(2.50)R1 M
NSVSJ1714048-081634 201902282820 123c Ymo 12.02(2.68)CV M
NSVSJ1714048-081634 201903012840 122c Ymo 12.02(2.68)CV M
NSVSJ1736280+004930 201902282824 105c Ymo 12.7-<16.8V M
NSVSJ1736280+004930 201903012843 105c Ymo 12.7-<16.8V M
NSVSJ1751339-062406 201902282824 115c Ymo 10.151(2.385)R1 L
NSVSJ1751339-062406 201903012844 115c Ymo 10.151(2.385)R1 L
OPHV1103 201903012847 111c Ymo 14.5-19P M
OPHV1776 201902282821 116c Ymo 14.6-18.2P M
OPHV2090 201902282829 113c Ymo 15.0-16P LB:
OPHV2090 201903012848 113c Ymo 15.0-16P LB:
OPHV2099 201903012842 121c Ymo 13.6-<16.0p M:
OPHV2843 201902282817 110c Ymo 11.7-<15.0V M
OPHV2843 201903012837 111c Ymo 11.7-<15.0V M
SCOBY 201903012835 109c Ymo 11.4-<17.4 M
SCOEU 201902282818 113c Ymo 11.4-<15.6V M
SCOV1562 201903012836 113c Ymo 11.7-<14.6V M
SGERW 201902282844 97c Ymo 13.0-<16.4P M
SGERW 201903012905 96c Ymo 13.0-<16.4P M
SGRV4120 201902282830 100c Ymo 0.6-1K M
SGRV4120 201903012913 99c Ymo 0.6-1K M
VULFX 201902282843 110c Ymo 15.0-<17P M
VULFX 201903012904 110c Ymo 15.0-<17P M
