{
  "bibcode": "2019GCN.25688....1D",
  "body": "J.G. Ducoin (LAL), S. Antier (APC), B. Chabert (IRAP), D. Corre (LAL), \nA. Klotz (IRAP), D. Turpin (NAOC), S. Basa (LAM), M. Boer (Artemis),\nN. Christensen (Artemis), A. Coleiro (APC), M. Coughlin (Caltech), \nD. Coward (OzGrav-UWA), P. Hello (LAL), N. Leroy (LAL), \nC. Thone (HETH/IAA-CSIC), X. Wang (THU)\n\nReport on behalf of the GRANDMA collaboration.\n\nWe performed galaxy-targeted observations of the LIGO/Virgo event \nS190901ap event (GCN #25606) with the amator astronomers \nof GRANDMA citizen science program \"kilonova-catcher\" created \nby CNRS/IRAP and CNRS/LAL.\n\nDenis St-Gelais, Raymond Kneip and Peter Jaquiery performed \ngalaxy-targeted observations in clear filter of the S190901ap event. \nDenis St-Gelais imaged 8 fields with a 36-cm telescope located \nin Quer��taro (Mexico): the typical limiting magnitude is 19 for \na 60.0 s exposure. Peter Jaquiery imaged 8 fields\nwith a 35-cm telescope at Berverly-Begg Observatory (New Zealand):\nthe typical magnitude is 18.5 for an exposure time of 10 min. \nRaymond Kneip imaged four fields with K26 35-cm telescope\nat Contern observatory (Luxembourg): the typical limiting magnitude \nis 18.5 mag for 20 min exposure.\n\nThe target galaxies are selected from the list of potential host \ngalaxies from the GLADE catalog in the 90% credible area of the \nlocalization region of the LIGO/Virgo GW event. Note that these \ngalaxies are compatible within 3 sigma with the distance of the \nGW event.\n\nNo significant transient candidates were found during our analysis.\n\nThe coverage map is available at:\nhttps://grandma-owncloud.lal.in2p3.fr/index.php/s/GDhyzNjw9xGJALH\n\n\nThe list of the galaxies we observed is given in the tables below. \nTStart and TEnd refers respectively to the time of the first and last \nexposure for a given galaxy. Observations are not necessarily continuous \nin this interval.\n\n\n+----------+----------+-----------------------+--------+--------+------+\n|TStart    | TEnd     | Galaxy                | RA     | DEC    | Dist.|\n|[UTC]     | [UTC]    | name                  | [deg]  | [deg]  | [Mpc]|\n|----------+----------+-----------------------+--------+--------+------|\n|2019-09-02|2019-09-02|HyperLEDA 58263        |247.161 |39.0833 |142.86|\n| 20:45:30 | 20:57:30 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 03582008-0532062 |59.5837 |-5.5351 |280.33|\n| 04:10:12 | 04:36:04 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 17054435+2214502 |256.4348|22.2473 |213.86|\n| 04:42:08 | 05:09:20 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA HIZOAJ1825-07|276.488 |-7.1932 |162.92|\n| 05:21:17 | 05:50:26 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA HIZOAJ1814-08|273.762 |-8.6037 |160.01|\n| 05:55:27 | 06:04:02 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 02262568-2820588 |36.6070 |-28.3497|311.49|\n| 07:23:29 | 07:50:49 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 02351345-2936166 |38.80607|-29.6046|267.85|\n| 08:06:32 | 08:42:21 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 03111883-2046184 |47.82849|-20.7718|305.52|\n| 09:03:31 | 09:30:46 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 03415732-1106138 |55.48884|-11.1039|246.10|\n| 09:36:01 | 10:34:18 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 23263752-6106015 |351.6563|-61.1004|177.63|\n| 09:44:34 | 10:04:34 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA HIZOAJ1825-07|276.488 |-7.19323|162.92|\n| 10:21:07 | 10:41:07 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA HIZOAJ1814-08|273.762 |-8.60367|160.01|\n| 11:15:29 | 11:35:29 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA ESO410-024   |9.11416 |-27.7854|149.38|\n| 11:28:45 | 11:37:45 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA ESO351-016   |13.09514|-35.0007|200.54|\n| 12:21:09 | 12:31:09 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA ESO411-028   |13.47525|-31.0955|137.69|\n| 12:38:20 | 12:48:20 |                       |        |        |      |\n|2019-09-03|2019-09-03|HyperLEDA ESO352-002   |16.1265 |-33.6544|141.76|\n| 12:58:27 | 13:18:27 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 01234572-5848208 |20.94051|-58.8058|205.94|\n| 13:28:49 | 13:48:49 |                       |        |        |      | \n|2019-09-03|2019-09-03|2MASS 16350144+3054117 |248.7560|30.90327|300.65|\n| 19:52:00 | 20:15:00 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 17111820+1650431 |257.8259|16.84531|252.86|\n| 20:19:00 | 20:42:00 |                       |        |        |      |\n|2019-09-03|2019-09-03|2MASS 18350342+3241471 |278.7642|32.69643|258.88|\n| 20:45:00 | 21:08:00 |                       |        |        |      |\n+----------+----------+-----------------------+--------+--------+------+\n\n\nGRANDMA (Global Rapid Advanced Network Devoted to the Multi-messenger \nAddicts) is a network of robotic telescopes connected all over the \nworld with both photometry and spectrometry capabilities for \nTime-domain Astronomy (https://grandma.lal.in2p3.fr/). Details on the \nGRANDMA web pages and the citizen science program \"kilonova-catcher\"  \nare available on https://grandma-kilonovacatcher.lal.in2p3.fr/",
  "circularId": 25688,
  "createdOn": 1568037189000,
  "email": "ducoin@lal.in2p3.fr",
  "subject": "LIGO/Virgo S190901ap : No significant candidates found in GRANDMA citizen science observations",
  "submitter": "Jean-Gregoire Ducoin at LAL  <ducoin@lal.in2p3.fr>",
  "eventId": "LIGO/Virgo S190901ap"
}