I’m still writing a few more words about my research, come back in a few days.
What I do for a living
I search for exoplanets. Planets around other stars.
The ultimate goal is to find an Earth-like planet orbiting a solar-like star.
But that’s not so easy. Low-mass planets (like the Earth) impart tiny effects on their host stars, in particular changing their radial velocity (RV) or their brightness. This is the basis of the RV (not that) and transit (not that) methods for planet detection.
The whole problem boils down to finding periodic signals of very low amplitude
During my PhD, I was in charge of a radial-velocity survey of metal-poor stars, with the goal of estimating the occurrence rate of low-mass planets in the low metallicity regime. I found a planet occurrence rate smaller than that of solar-metallicity stars, which means that the famous giant planet – metallicity correlation also extends to the population of low-mass planets.
I enjoy writing code and developing software for science.
Most of my projects can be found on Github. Here are some important ones:
bgls - Bayesian version of the Generalized Lomb-Scargle periodogram
keplerian - the Keplerian function
kima - Exoplanet detection in RVs with DNest4 and GPs
SAM - Hi, I’m SAM
Over at the blog, I’ve talked about a number of other small codes.
I am co-author of 31 refereed research papers. Here’s a list:
The GAPS Programme with HARPS-N at TNG. XVIII. Two new giant planets around the metal-poor stars HD 220197 and HD 233832
Barbato et al. 2019, A&A, 621, A110
Activity induced variation in spin-orbit angles as derived from Rossiter-McLaughlin measurements
Oshagh et al. 2018, A&A, 619, A150
SWEET-Cat updated. New homogenous spectroscopic parameters
Sousa et al. 2018, A&A, 620, A58
Planets around evolved intermediate-mass stars. II. Are there really planets around IC 4651 No. 9122, NGC 2423 No. 3, and NGC 4349 No. 127?
Delgado Mena et al. 2018, A&A, 619, A2
The TROY project. II. Multi-technique constraints on exotrojans in nine planetary systems
Lillo-Box et al. 2018, A&A, 618, A42
Chemical Abundances of Neutron-capture Elements in Exoplanet-hosting Stars
Delgado Mena et al. 2018, PASP, 130, 094202
Recovering the colour-dependent albedo of exoplanets with high-resolution spectroscopy: from ESPRESSO to the ELT
Martins et al. 2018, MNRAS, 478, 5240
kima: Exoplanet detection in radial velocities
Faria et al. 2018, JOSS, 3, 487
An Earth-sized exoplanet with a Mercury-like composition
Santerne et al. 2018, Nature Astronomy, 2, 393
Distinguishing the albedo of exoplanets from stellar activity
Serrano et al. 2018, A&A, 611, A8
The TROY project: Searching for co-orbital bodies to known planets. I. Project goals and first results from archival radial velocity
Lillo-Box et al. 2018, A&A, 609, A96
Chemical abundances of neutron-capture elements in exoplanet-hosting stars.
Mena et al. 2018, PASP, 130, 9.4202
Constraining planet structure and composition from stellar chemistry: trends in different stellar populations
Santos et al. 2017, A&A, 608, A94
Precise masses for the transiting planetary system HD 106315 with HARPS
Barros et al. 2017, A&A, 608, A25
Understanding stellar activity-induced radial velocity jitter using simultaneous K2 photometry and HARPS RV measurements
Oshagh et al. 2017, A&A, 606, A107
Observational evidence for two distinct giant planet populations
Santos et al. 2017, A&A, 603, A30
A Pragmatic Bayesian Perspective on Correlation Analysis. The exoplanetary gravity - stellar activity case
Figueira et al. 2016, OLEB, 46, 385
Abundance trend with condensation temperature for stars with different Galactic birth places
Adibekyan et al. 2016, A&A, 592, A87
Is the activity level of HD 80606 influenced by its eccentric planet?
Figueira et al. 2016, A&A, 592, A143
An extreme planetary system around HD 219828. One long-period super Jupiter to a hot-Neptune host star
Santos et al. 2016, A&A, 592, A13
ζ2 Reticuli, its debris disk, and its lonely stellar companion ζ1 Ret. Different Tc trends for different spectra
Adibekyan et al. 2016, A&A, 591, A34
The HARPS search for southern extra-solar planets. XL. Searching for Neptunes around metal-poor stars
Faria et al. 2016, A&A, 589, A25
Uncovering the planets and stellar activity of CoRoT-7 using only radial velocities
Faria et al. 2016, A&A, 588, A31
The HARPS search for southern extra-solar planets. XXXIX. HD 175607, the most metal-poor G dwarf with an orbiting sub-Neptune
Mortier et al. 2016, A&A, 585, A135
Identifying the best iron-peak and α-capture elements for chemical tagging: The impact of the number of lines on measured scatter
Adibekyan et al. 2015, A&A, 583, A94
Evidence for a spectroscopic direct detection of reflected light from
51 Pegasi b
Martins et al. 2015, A&A, 576, A134
BGLS: A Bayesian formalism for the generalised Lomb-Scargle periodogram
Mortier et al. 2015, A&A, 573, A101
Exoplanet hosts reveal lithium depletion. Results from a homogeneous statistical analysis
Figueira et al. 2014, A&A, 570, A21
Asteroseismic Estimate of Helium Abundance of a Solar Analog Binary System
Verma et al. 2014, ApJ, 790, 138
The HARPS search for southern extra-solar planets. XXXV. The interesting case of HD 41248: stellar activity, no planets?
Santos et al. 2014, A&A, 566, A35
On the possibility of using seismic probes to study the core composition in pulsating white dwarfs
Faria et al. 2012, Astronomische Nachrichten, 333, 954