Photometric follow-up of AT2019ahd (ATLAS19car) with GROWTH-India
ATel #12476; Viraj Karambelkar, Harsh Kumar, Shubham Srivastav, Gaurav Waratkar (IITB), Urgain Stanzin (IAO), Varun Bhalerao (IITB), G. C. Anupama (IIA)
on 5 Feb 2019; 20:06 UT
Credential Certification: Shubham Srivastav (shubhamsrivastav@iitb.ac.in)
Subjects: Optical, Variables
We report photometric follow-up observations of AT2018ahd (ATel #12449, #12451) that was classified as an LBV (ATel #12454). The images were obtained in g, r, i filters and the magnitudes were calibrated against PS1 reference stars in the field.
Date (UT) Filter Magnitude
2019 Jan 30.78 g 18.56 ± 0.09
2019 Jan 30.79 r 18.11 ± 0.09
2019 Jan 30.79 i 18.32 ± 0.09
2019 Feb 01.80 g 18.21 ± 0.05
2019 Feb 01.81 i 17.92 ± 0.04
2019 Feb 02.86 g 18.16 ± 0.05
2019 Feb 02.87 r 17.90 ± 0.04
2019 Feb 02.88 i 17.78 ± 0.04
2019 Feb 03.91 g 18.13 ± 0.03
2019 Feb 03.92 r 17.83 ± 0.04
2019 Feb 03.92 i 17.64 ± 0.04
GROWTH-India is a 70-cm telescope set up by the Indian Institute of Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB) with support from the Indo-US Science and Technology Forum (IUSSTF) and the Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), Government of India (https://sites.google.com/view/growthindia/). It is located at the Indian Astronomical Observatory at Hanle, Ladakh (India).
